WorldWideScience

Sample records for state-of-the-art computational approaches

  1. State-of-the-art in Heterogeneous Computing

    Directory of Open Access Journals (Sweden)

    Andre R. Brodtkorb

    2010-01-01

    Full Text Available Node level heterogeneous architectures have become attractive during the last decade for several reasons: compared to traditional symmetric CPUs, they offer high peak performance and are energy and/or cost efficient. With the increase of fine-grained parallelism in high-performance computing, as well as the introduction of parallelism in workstations, there is an acute need for a good overview and understanding of these architectures. We give an overview of the state-of-the-art in heterogeneous computing, focusing on three commonly found architectures: the Cell Broadband Engine Architecture, graphics processing units (GPUs, and field programmable gate arrays (FPGAs. We present a review of hardware, available software tools, and an overview of state-of-the-art techniques and algorithms. Furthermore, we present a qualitative and quantitative comparison of the architectures, and give our view on the future of heterogeneous computing.

  2. State-of-the-art computer technologies used to train nuclear specialists and to conduct research

    International Nuclear Information System (INIS)

    Korovin, Yu.A.; Tikhonenko, A.V.

    2011-01-01

    The paper discusses innovative methods used in the process of training nuclear specialists and conducting research which are based on state-of-the-art computer technologies. The approach proposed makes wide use of mathematical modeling and state-of-the-art programming techniques. It is based on the development, improvement and application of problem-oriented computer codes to support the teaching process and to solve fundamental and applied problems of nuclear physics and nuclear engineering.

  3. PARA'04, State-of-the-art in scientific computing

    DEFF Research Database (Denmark)

    Madsen, Kaj; Wasniewski, Jerzy

    This meeting in the series, the PARA'04 Workshop with the title ``State of the Art in Scientific Computing'', was held in Lyngby, Denmark, June 20-23, 2004. The PARA'04 Workshop was organized by Jack Dongarra from the University of Tennessee and Oak Ridge National Laboratory, and Kaj Madsen and J...

  4. The fifth generation computer project state of the art report 111

    CERN Document Server

    Scarrott

    1983-01-01

    The Fifth Generation Computer Project is a two-part book consisting of the invited papers and the analysis. The invited papers examine various aspects of The Fifth Generation Computer Project. The analysis part assesses the major advances of the Fifth Generation Computer Project and provides a balanced analysis of the state of the art in The Fifth Generation. This part provides a balanced and comprehensive view of the development in Fifth Generation Computer technology. The Bibliography compiles the most important published material on the subject of The Fifth Generation.

  5. Computer Graphics 2: More of the Best Computer Art and Design.

    Science.gov (United States)

    1994

    This collection of computer generated images aims to present media tools and processes, stimulate ideas, and inspire artists and art students working in computer-related design. The images are representative of state-of-the-art editorial, broadcast, packaging, fine arts, and graphic techniques possible through computer generation. Each image is…

  6. The Computer Generated Art/Contemporary Cinematography And The Remainder Of The Art History. A Critical Approach

    Directory of Open Access Journals (Sweden)

    Modesta Lupașcu

    2016-11-01

    Full Text Available The paper analyses the re-conceptualization of the intermedial trope of computer generated images/VFX in recent 3D works/cinema scenes through several examples from art history, which are connected with. The obvious connections between art history and images are not conceived primarily as an embodiment of a painting, the introduction of the real into the image, but prove the reconstructive tendencies of contemporary post-postmodern art. The intellectual, the casual, or the obsessive interaction with art history shown by the new film culture, is already celebrated trough 3D computer generated art, focused to a consistently pictorialist cinematography.

  7. Cloud computing methods and practical approaches

    CERN Document Server

    Mahmood, Zaigham

    2013-01-01

    This book presents both state-of-the-art research developments and practical guidance on approaches, technologies and frameworks for the emerging cloud paradigm. Topics and features: presents the state of the art in cloud technologies, infrastructures, and service delivery and deployment models; discusses relevant theoretical frameworks, practical approaches and suggested methodologies; offers guidance and best practices for the development of cloud-based services and infrastructures, and examines management aspects of cloud computing; reviews consumer perspectives on mobile cloud computing an

  8. Computational methods for metabolomic data analysis of ion mobility spectrometry data-reviewing the state of the art

    DEFF Research Database (Denmark)

    Hauschild, Anne-Christin; Schneider, Till; Pauling, Josch

    2012-01-01

    that MCC/IMS coupled with sophisticated computational methods has the potential to successfully address a broad range of biomedical questions. While we can solve most of the data pre-processing steps satisfactorily, some computational challenges with statistical learning and model validation remain.......Ion mobility spectrometry combined with multi-capillary columns (MCC/IMS) is a well known technology for detecting volatile organic compounds (VOCs). We may utilize MCC/IMS for scanning human exhaled air, bacterial colonies or cell lines, for example. Thereby we gain information about the human...... of computational approaches for analyzing the huge amount of emerging data sets. Here, we will review the state of the art and highlight existing challenges. First, we address methods for raw data handling, data storage and visualization. Afterwards we will introduce de-noising, peak picking and other pre...

  9. A review on the state-of-the-art privacy-preserving approaches in the e-health clouds.

    Science.gov (United States)

    Abbas, Assad; Khan, Samee U

    2014-07-01

    Cloud computing is emerging as a new computing paradigm in the healthcare sector besides other business domains. Large numbers of health organizations have started shifting the electronic health information to the cloud environment. Introducing the cloud services in the health sector not only facilitates the exchange of electronic medical records among the hospitals and clinics, but also enables the cloud to act as a medical record storage center. Moreover, shifting to the cloud environment relieves the healthcare organizations of the tedious tasks of infrastructure management and also minimizes development and maintenance costs. Nonetheless, storing the patient health data in the third-party servers also entails serious threats to data privacy. Because of probable disclosure of medical records stored and exchanged in the cloud, the patients' privacy concerns should essentially be considered when designing the security and privacy mechanisms. Various approaches have been used to preserve the privacy of the health information in the cloud environment. This survey aims to encompass the state-of-the-art privacy-preserving approaches employed in the e-Health clouds. Moreover, the privacy-preserving approaches are classified into cryptographic and noncryptographic approaches and taxonomy of the approaches is also presented. Furthermore, the strengths and weaknesses of the presented approaches are reported and some open issues are highlighted.

  10. Academic Computing: The State of the Art in Equipment, Organization, and the Trend to Terminal Use and Networking.

    Science.gov (United States)

    Dougherty, David M.

    1983-01-01

    Reports the methodology and results of a survey of 180 universities which assessed the state of the art of university computing with particular reference to the computing equipment being used and the growth of networking and how they are affected by student enrollment and the computer science curriculum. (EAO)

  11. The Computer Generated Art/Contemporary Cinematography And The Remainder Of The Art History. A Critical Approach

    OpenAIRE

    Modesta Lupașcu

    2016-01-01

    The paper analyses the re-conceptualization of the intermedial trope of computer generated images/VFX in recent 3D works/cinema scenes through several examples from art history, which are connected with. The obvious connections between art history and images are not conceived primarily as an embodiment of a painting, the introduction of the real into the image, but prove the reconstructive tendencies of contemporary post-postmodern art. The intellectual, the casual, or the obsessive interacti...

  12. Analyst workbenches state of the art report

    CERN Document Server

    Rock-Evans, R

    1987-01-01

    Analyst Workbenches examines various aspects of analyst workbenches and the tasks and data that they should support. The major advances and state of the art in analyst workbenches are discussed. A comprehensive list of the available analyst workbenches, both the experimental and the commercial products, is provided. Comprised of three parts, this book begins by describing International Computers Ltd's approach to automating analysis and design. It then explains what business analysis really means, outlines the principal features of analyst workbenches, and considers the ways in which they can

  13. Trends in Mobile Computing: State-of-the-Art and Next Steps

    CERN Document Server

    CERN. Geneva

    2006-01-01

    Computing is moving to the edge of the network. It is becoming increasingly personal and allowing people to enjoy and express themselves in unprecedented ways. The same development allows professionals and enterprises to increase quality and productivity through improved mobility. The seminar discusses the underlying technical and societal trends and the state-of-the-art of mobile computing. Examples of current developments include the transformation of mobile devices into servers, augmented reality in mobile devices and the opportunities offered by wireless sensor networks. The fusion of the physical and digital worlds enabled by mobile computing is driving industry and society to adopt new uses of digital technologies and causing the focus of development to shift from hardware products to new services. Bio:Since 2004 Prof. Jan Bosch is working as Vice President and Head of the Software and Application Technology Laboratory of Nokia Research Centre in Helsinki, Finland. The Software & Application Tec...

  14. Dose Reduction and Dose Management in Computed Tomography - State of the Art.

    Science.gov (United States)

    Zinsser, Dominik; Marcus, Roy; Othman, Ahmed E; Bamberg, Fabian; Nikolaou, Konstantin; Flohr, Thomas; Notohamiprodjo, Mike

    2018-03-13

     For years, the number of performed CT examinations has been rising. At the same time, computed tomography became more dose efficient. The aim of this article is to give an overview about the state of the art in dose reduction in CT and to highlight currently available tools in dose management.  By performing a literature research on Pubmed regarding dose reduction in CT, relevant articles were identified and analyzed.  Technical innovations with individual adaptation of tube current and voltage as well as iterative image reconstruction enable a considerable dose reduction with preserved image quality. At the same time, dedicated software tools are able to handle huge amounts of data and allow to optimize existing examination protocols.   · CT examinations are increasingly performed and contribute considerably to non-natural radiation exposure.. · A correct indication is crucial for each CT examination.. · The examination protocol has to be tailored to the medical question and patient.. · Multiple technical innovations enable considerable dose reduction with constant image quality.. · Dose management with dedicated software tools gains importance.. · Zinsser D, Marcus R, Othman AE et al. Dose reduction and dose management in computed tomography - State of the art. Fortschr Röntgenstr 2018; DOI: 10.1055/s-0044-101261. © Georg Thieme Verlag KG Stuttgart · New York.

  15. Case Studies of Liberal Arts Computer Science Programs

    Science.gov (United States)

    Baldwin, D.; Brady, A.; Danyluk, A.; Adams, J.; Lawrence, A.

    2010-01-01

    Many undergraduate liberal arts institutions offer computer science majors. This article illustrates how quality computer science programs can be realized in a wide variety of liberal arts settings by describing and contrasting the actual programs at five liberal arts colleges: Williams College, Kalamazoo College, the State University of New York…

  16. Computer Icons and the Art of Memory.

    Science.gov (United States)

    McNair, John R.

    1996-01-01

    States that key aspects of "memoria," the ancient Art of Memory, especially its focus on vivid representational images set against distinct backgrounds, can be helpful in creating memorable, universal, and easily retrievable computer icons. (PA)

  17. Soft computing approach for reliability optimization: State-of-the-art survey

    International Nuclear Information System (INIS)

    Gen, Mitsuo; Yun, Young Su

    2006-01-01

    In the broadest sense, reliability is a measure of performance of systems. As systems have grown more complex, the consequences of their unreliable behavior have become severe in terms of cost, effort, lives, etc., and the interest in assessing system reliability and the need for improving the reliability of products and systems have become very important. Most solution methods for reliability optimization assume that systems have redundancy components in series and/or parallel systems and alternative designs are available. Reliability optimization problems concentrate on optimal allocation of redundancy components and optimal selection of alternative designs to meet system requirement. In the past two decades, numerous reliability optimization techniques have been proposed. Generally, these techniques can be classified as linear programming, dynamic programming, integer programming, geometric programming, heuristic method, Lagrangean multiplier method and so on. A Genetic Algorithm (GA), as a soft computing approach, is a powerful tool for solving various reliability optimization problems. In this paper, we briefly survey GA-based approach for various reliability optimization problems, such as reliability optimization of redundant system, reliability optimization with alternative design, reliability optimization with time-dependent reliability, reliability optimization with interval coefficients, bicriteria reliability optimization, and reliability optimization with fuzzy goals. We also introduce the hybrid approaches for combining GA with fuzzy logic, neural network and other conventional search techniques. Finally, we have some experiments with an example of various reliability optimization problems using hybrid GA approach

  18. a Radical Collaborative Approach: Developing a Model for Learning Theory, Human-Based Computation and Participant Motivation in a Rock-Art Heritage Application

    Science.gov (United States)

    Haubt, R.

    2016-06-01

    This paper explores a Radical Collaborative Approach in the global and centralized Rock-Art Database project to find new ways to look at rock-art by making information more accessible and more visible through public contributions. It looks at rock-art through the Key Performance Indicator (KPI), identified with the latest Australian State of the Environment Reports to help develop a better understanding of rock-art within a broader Cultural and Indigenous Heritage context. Using a practice-led approach the project develops a conceptual collaborative model that is deployed within the RADB Management System. Exploring learning theory, human-based computation and participant motivation the paper develops a procedure for deploying collaborative functions within the interface design of the RADB Management System. The paper presents the results of the collaborative model implementation and discusses considerations for the next iteration of the RADB Universe within an Agile Development Approach.

  19. Characterization of the Elusive Conformers of Glycine from State-of-the-Art Structural, Thermodynamic, and Spectroscopic Computations: Theory Complements Experiment.

    Science.gov (United States)

    Barone, Vincenzo; Biczysko, Malgorzata; Bloino, Julien; Puzzarini, Cristina

    2013-03-12

    A state-of-the-art computational strategy for the evaluation of accurate molecular structures as well as thermodynamic and spectroscopic properties along with the direct simulation of infrared (IR) and Raman spectra is established, validated (on the basis of the experimental data available for the Ip glycine conformer) and then used to provide a reliable and accurate characterization of the elusive IVn/gtt and IIIp/tct glycine conformers. The integrated theoretical model proposed is based on accurate post-Hartree-Fock computations (involving composite schemes) of energies, structures, properties, and harmonic force fields coupled to DFT corrections for the proper inclusion of vibrational effects at an anharmonic level (as provided by general second-order perturbative approach). It is shown that the approach presented here allows the evaluation of structural, thermodynamic, and spectroscopic properties with an overall accuracy of about, or better than, 0.001 Å, 20 MHz, 1 kJ·mol(-1), and 10 cm(-1) for bond distances, rotational constants, conformational enthalpies, and vibrational frequencies, respectively. The high accuracy of the computational results allows one to support and complement experimental studies, thus providing (i) an unequivocal identification of several conformers concomitantly present in the experimental mixture and (ii) data not available or difficult to experimentally derive.

  20. State of the art concerning optimum location of capacitors and studying the exhaustive search approach for optimising a given solution

    Directory of Open Access Journals (Sweden)

    Sergio Raúl Rivera Rodríguez

    2004-09-01

    Full Text Available The present article reviews the state of the art of optimum capacitor location in distribution systems, provideing guidelines for planners engaged in optimising tension profiles and controlling reagents in distribution networks.Optimising a given solution by exhastive search is studied here; the dimensions of a given problem are determined by evaluating the different possibilities for resolving it and the solution algorithm's computational times and requierements are visualised. An example system (9 node, IEEE is used for illustrating the exhaustive search approach, where it was found that methods used in the literature regarding this topic do not always lead to the optimum solution.

  1. Multimodal Dialogue Management - State of the art

    NARCIS (Netherlands)

    Bui Huu Trung, B.H.T.

    This report is about the state of the art in dialogue management. We first introduce an overview of a multimodal dialogue system and its components. Second, four main approaches to dialogue management are described (finite-state and frame-based, information-state based and probabilistic, plan-based,

  2. Skills and the appreciation of computer art

    Science.gov (United States)

    Boden, Margaret A.

    2016-04-01

    The appreciation of art normally includes recognition of the artist's skills in making it. Most people cannot appreciate computer art in that way, because they know little or nothing about coding. Various suggestions are made about how computer artists and/or curators might design and present computer art in such a way as to make the relevant making-skills more intelligible.

  3. Combining Brain–Computer Interfaces and Assistive Technologies: State-of-the-Art and Challenges

    Science.gov (United States)

    Millán, J. d. R.; Rupp, R.; Müller-Putz, G. R.; Murray-Smith, R.; Giugliemma, C.; Tangermann, M.; Vidaurre, C.; Cincotti, F.; Kübler, A.; Leeb, R.; Neuper, C.; Müller, K.-R.; Mattia, D.

    2010-01-01

    In recent years, new research has brought the field of electroencephalogram (EEG)-based brain–computer interfacing (BCI) out of its infancy and into a phase of relative maturity through many demonstrated prototypes such as brain-controlled wheelchairs, keyboards, and computer games. With this proof-of-concept phase in the past, the time is now ripe to focus on the development of practical BCI technologies that can be brought out of the lab and into real-world applications. In particular, we focus on the prospect of improving the lives of countless disabled individuals through a combination of BCI technology with existing assistive technologies (AT). In pursuit of more practical BCIs for use outside of the lab, in this paper, we identify four application areas where disabled individuals could greatly benefit from advancements in BCI technology, namely, “Communication and Control”, “Motor Substitution”, “Entertainment”, and “Motor Recovery”. We review the current state of the art and possible future developments, while discussing the main research issues in these four areas. In particular, we expect the most progress in the development of technologies such as hybrid BCI architectures, user–machine adaptation algorithms, the exploitation of users’ mental states for BCI reliability and confidence measures, the incorporation of principles in human–computer interaction (HCI) to improve BCI usability, and the development of novel BCI technology including better EEG devices. PMID:20877434

  4. Web mining in soft computing framework: relevance, state of the art and future directions.

    Science.gov (United States)

    Pal, S K; Talwar, V; Mitra, P

    2002-01-01

    The paper summarizes the different characteristics of Web data, the basic components of Web mining and its different types, and the current state of the art. The reason for considering Web mining, a separate field from data mining, is explained. The limitations of some of the existing Web mining methods and tools are enunciated, and the significance of soft computing (comprising fuzzy logic (FL), artificial neural networks (ANNs), genetic algorithms (GAs), and rough sets (RSs) are highlighted. A survey of the existing literature on "soft Web mining" is provided along with the commercially available systems. The prospective areas of Web mining where the application of soft computing needs immediate attention are outlined with justification. Scope for future research in developing "soft Web mining" systems is explained. An extensive bibliography is also provided.

  5. Computer Games and Art

    Directory of Open Access Journals (Sweden)

    Anton Sukhov

    2015-10-01

    Full Text Available This article devoted to the search of relevant sources (primary and secondary and characteristics of computer games that allow to include them in the field of art (such as the creation of artistic games, computer graphics, active interaction with other forms of art, signs of spiritual aesthetic act, own temporality of computer games, “aesthetic illusion”, interactivity. In general, modern computer games can be attributed to commercial art and popular culture (blockbuster games and to elite forms of contemporary media art (author’s games, visionary games.

  6. State of the Art High-Throughput Approaches to Genotoxicity: Flow Micronucleus, Ames II, GreenScreen and Comet

    Science.gov (United States)

    State of the Art High-Throughput Approaches to Genotoxicity: Flow Micronucleus, Ames II, GreenScreen and Comet (Presented by Dr. Marilyn J. Aardema, Chief Scientific Advisor, Toxicology, Dr. Leon Stankowski, et. al. (6/28/2012)

  7. Computer Science and the Liberal Arts

    Science.gov (United States)

    Shannon, Christine

    2010-01-01

    Computer science and the liberal arts have much to offer each other. Yet liberal arts colleges, in particular, have been slow to recognize the opportunity that the study of computer science provides for achieving the goals of a liberal education. After the precipitous drop in computer science enrollments during the first decade of this century,…

  8. Computer-aided detection systems to improve lung cancer early diagnosis: state-of-the-art and challenges

    International Nuclear Information System (INIS)

    Traverso, A; Lopez Torres, E; Cerello, P; Fantacci, M E

    2017-01-01

    Lung cancer is one of the most lethal types of cancer, because its early diagnosis is not good enough. In fact, the detection of pulmonary nodule, potential lung cancers, in Computed Tomography scans is a very challenging and time-consuming task for radiologists. To support radiologists, researchers have developed Computer-Aided Diagnosis (CAD) systems for the automated detection of pulmonary nodules in chest Computed Tomography scans. Despite the high level of technological developments and the proved benefits on the overall detection performance, the usage of Computer-Aided Diagnosis in clinical practice is far from being a common procedure. In this paper we investigate the causes underlying this discrepancy and present a solution to tackle it: the M5L WEB- and Cloud-based on-demand Computer-Aided Diagnosis. In addition, we prove how the combination of traditional imaging processing techniques with state-of-art advanced classification algorithms allows to build a system whose performance could be much larger than any Computer-Aided Diagnosis developed so far. This outcome opens the possibility to use the CAD as clinical decision support for radiologists. (paper)

  9. Computer-aided detection systems to improve lung cancer early diagnosis: state-of-the-art and challenges

    Science.gov (United States)

    Traverso, A.; Lopez Torres, E.; Fantacci, M. E.; Cerello, P.

    2017-05-01

    Lung cancer is one of the most lethal types of cancer, because its early diagnosis is not good enough. In fact, the detection of pulmonary nodule, potential lung cancers, in Computed Tomography scans is a very challenging and time-consuming task for radiologists. To support radiologists, researchers have developed Computer-Aided Diagnosis (CAD) systems for the automated detection of pulmonary nodules in chest Computed Tomography scans. Despite the high level of technological developments and the proved benefits on the overall detection performance, the usage of Computer-Aided Diagnosis in clinical practice is far from being a common procedure. In this paper we investigate the causes underlying this discrepancy and present a solution to tackle it: the M5L WEB- and Cloud-based on-demand Computer-Aided Diagnosis. In addition, we prove how the combination of traditional imaging processing techniques with state-of-art advanced classification algorithms allows to build a system whose performance could be much larger than any Computer-Aided Diagnosis developed so far. This outcome opens the possibility to use the CAD as clinical decision support for radiologists.

  10. The "State of Art" of Organisational Blogging

    Science.gov (United States)

    Baxter, Gavin J.; Connolly, Thomas M.

    2013-01-01

    Purpose: The aim of this paper is to provide an overview of the "state of art" of organisational blogging. It also aims to provide a critical review of the literature on organisational blogging and propose recommendations on how to advance the subject area in terms of academic research. Design/methodology/approach: A systematic literature review…

  11. Design and Curriculum Considerations for a Computer Graphics Program in the Arts.

    Science.gov (United States)

    Leeman, Ruedy W.

    This history and state-of-the-art review of computer graphics describes computer graphics programs and proposed programs at Sheridan College (Canada), the Rhode Island School of Design, the University of Oregon, Northern Illinois University, and Ohio State University. These programs are discussed in terms of their philosophy, curriculum, student…

  12. State of the States, 2012: Arts Education State Policy Summary

    Science.gov (United States)

    Arts Education Partnership (NJ1), 2012

    2012-01-01

    The "State of the States 2012" summarizes state policies for arts education identified in statute or code for all 50 states and the District of Columbia. Information is based primarily on results from the AEP Arts Education State Policy Survey conducted in 2010-11, and updated in April 2012.

  13. State of the art report on design for X

    DEFF Research Database (Denmark)

    Papanikolaou, Apostolos; Andersen, Poul; Kristensen, Hans Otto Holmegaard

    2009-01-01

    The present State of the Art report aims at defining and reviewing the curent state of the ship design process in the frame of a holistic approach, accounting for various objectives and constraints. The report addresses mainly the design of transportation carriers, though some covered aspects...

  14. Symposium Connects Government Problems with State of the Art Network Science Research

    Science.gov (United States)

    2015-10-16

    Symposium Connects Government Problems with State-of-the- Art Network Science Research By Rajmonda S. Caceres and Benjamin A. Miller Network...the US Gov- ernment, and match these with the state-of-the- art models and techniques developed in the network science research community. Since its... science has grown significantly in the last several years as a field at the intersec- tion of mathematics, computer science , social science , and engineering

  15. State of the art magnetic resonance imaging

    International Nuclear Information System (INIS)

    Weissman, J.D.

    1987-01-01

    In less than a decade Magnetic Resonance Imaging (MRI) has evolved from a laboratory demonstration to a safe and effective technique for clinical diagnosis. This evolutionary process continues. At this time 2-D and 3-D imaging of the head and body is firmly established in clinical use. Surface coil imaging, two-component chemical shift imaging, in-vivo spectroscopy and flow imaging are currently in various stages of development. The present state of the art of MRI is a function of an array of technologies: magnet, Rf coil, Rf pulse amplifier, gradient coil and driver, pulse programmer, A/D converter, computer system architecture, array processors and mass storage (both magnetic and optical). The overall product design is the result of a complex process which balances the advantages and disadvantages of each component for optimal system performance and flexibility. The author discusses the organization of a state-of-the-art MRI system. Several examples of the kinds of system interactions affecting design choices are given. (Auth.)

  16. Cancer Vaccines: State of the Art of the Computational Modeling Approaches

    Directory of Open Access Journals (Sweden)

    Francesco Pappalardo

    2013-01-01

    Full Text Available Cancer vaccines are a real application of the extensive knowledge of immunology to the field of oncology. Tumors are dynamic complex systems in which several entities, events, and conditions interact among them resulting in growth, invasion, and metastases. The immune system includes many cells and molecules that cooperatively act to protect the host organism from foreign agents. Interactions between the immune system and the tumor mass include a huge number of biological factors. Testing of some cancer vaccine features, such as the best conditions for vaccine administration or the identification of candidate antigenic stimuli, can be very difficult or even impossible only through experiments with biological models simply because a high number of variables need to be considered at the same time. This is where computational models, and, to this extent, immunoinformatics, can prove handy as they have shown to be able to reproduce enough biological complexity to be of use in suggesting new experiments. Indeed, computational models can be used in addition to biological models. We now experience that biologists and medical doctors are progressively convinced that modeling can be of great help in understanding experimental results and planning new experiments. This will boost this research in the future.

  17. State-of-the-art report on the theoretical modeling of interfacial area concentration

    International Nuclear Information System (INIS)

    Lee, Won Jae; Euh, Dong Jin

    1998-03-01

    Classical approaches based on experimental correlations and the mechanistic approaches based on the interfacial area concentration were reviewed. The study focuses on the state-of-the-art researches based on the mechanistic modeling of the interfacial area concentration. The investigation is performed by classifying the mechanistic modeling approaches into those using the number density transport equations supported with a simple algebraic relation for obtaining interfacial area concentration and those using the direct interfacial area transport equations. The modeling approaches are subdivided into one group and multi-group models. The state-of-the-art source terms of transport equations are also investigated for their applicability and limitations. (author). 62 refs., 6 tabs., 49 figs

  18. Text Generation: The State of the Art and the Literature.

    Science.gov (United States)

    Mann, William C.; And Others

    This report comprises two documents which describe the state of the art of computer generation of natural language text. Both were prepared by a panel of individuals who are active in research on text generation. The first document assesses the techniques now available for use in systems design, covering all of the technical methods by which…

  19. The state-of-the-art of ART sealants.

    Science.gov (United States)

    Frencken, Jo E

    2014-03-01

    Sealing caries-prone pits and fissure systems is an effective caries-preventive measure. There are basically two types of sealant materials: glass-ionomer and resin-based materials. Low- and medium-viscosity glass-ionomers were initially used and showed a low level of retention. With the advent of the ART approach in the mid-nineties, high-viscosity glass-ionomers were introduced as sealant material and the retention rate of ART sealants increased substantially. As the effectiveness of a sealant is measured by its capacity to prevent (dentine) carious lesion development, sealant retention is considered a surrogate endpoint. The ART sealant protocol is described. Systematic reviews and meta-analysis covering low- medium- and high-viscosity glass-ionomer (ART) sealants have concluded that there is no evidence that either glass-ionomer or resin-based sealants prevent dentine carious lesions better. The annual dentine carious lesion development in teeth with high-viscosity glass-ionomer ART sealants over the first three years is 1%. These ART sealants have a high capacity of preventing carious lesion development. Because no electricity and running water is required, ART sealants can be placed both inside and outside the dental surgery. High-viscosity glass-ionomer ART sealants can be used alongside resin-based sealants.41:119-124

  20. State-of-the-art protein engineering approaches using biological macromolecules: A review from immobilization to implementation view point.

    Science.gov (United States)

    Bilal, Muhammad; Iqbal, Hafiz M N; Guo, Shuqi; Hu, Hongbo; Wang, Wei; Zhang, Xuehong

    2018-03-01

    Over the past years, technological and scientific advances have proven biocatalysis as a sustainable alternative than traditional chemical catalysis including organo- or metallocatalysis. In this context, immobilization based approaches represent simple but effective routes for engineering enzyme catalysts with higher activities than wild-type derivatives. Many enzymes including oxidoreductases have been engineered by rational and directed evolution, to realize the catalytic activity, enantioselectivity, and stability attributes which are essential for their biotechnological exploitation. Induce yet stable activity in enzyme catalysis offer new insights and motivation to engineer efficient catalysts for practical and commercial purposes. It has now become possible to envisage substrate accessibility to the catalytic site of the enzyme by current computational capabilities that reduce the experimental work related to the enzyme selection, screening, and engineering. Herein, state-of-the-art protein engineering approaches for improving enzymatic activities including chemical modification, directed evolution, and rational design or their combination methods are discussed. The emphasis is also given to the applications of the resulting tailored catalysts ranging from fine chemicals to novel pharmaceutical compounds that use biocatalysts as a vital step. Copyright © 2017 Elsevier B.V. All rights reserved.

  1. The job demands-resources model : state of the art

    NARCIS (Netherlands)

    Bakker, A.B.; Demerouti, E.

    2007-01-01

    Purpose - The purpose of this paper is to give a state-of-the art overview of the Job Demands-Resources (JD-R) model Design/methodology/approach - The strengths and weaknesses of the demand-control model and the effort-reward imbalance model regarding their predictive value for employee well being

  2. The state of art of the methods for thermohydraulics design of LMFBR fuel elements

    International Nuclear Information System (INIS)

    Fernandez y Fernandez, E.; Carajilescov, P.

    1981-09-01

    The present (experimental and analytical) state of art of the methods for thermohydraulics design of LMFBR fuel elements is analyzed. A development program is suggested, in order to obtain a computer code for modelling the distribution of coolant enthalpy in reactor core. This computer code is in development. (Author) [pt

  3. Computational Paradigm to Elucidate the Effects of Arts-Based Approaches and Interventions: Individual and Collective Emerging Behaviors in Artwork Construction.

    Directory of Open Access Journals (Sweden)

    Billie Sandak

    Full Text Available Art therapy, as well as other arts-based therapies and interventions, is used to reduce pain, stress, depression, breathlessness and other symptoms in a wide variety of serious and chronic diseases, such as cancer, Alzheimer and schizophrenia. Arts-based approaches are also known to contribute to one's well-being and quality of life. However, much research is required, since the mechanisms by which these non-pharmacological treatments exert their therapeutic and psychosocial effects are not adequately understood. A typical clinical setting utilizing the arts consists of the creation work itself, such as the artwork, as well as the therapist and the patient, all of which constitute a rich and dynamic environment of occurrences. The underlying complex, simultaneous and interwoven processes of this setting are often considered intractable to human observers, and as a consequence are usually interpreted subjectively and described verbally, which affect their subsequent analyses and understanding. We introduce a computational research method for elucidating and analyzing emergent expressive and social behaviors, aiming to understand how arts-based approaches operate. Our methodology, which centers on the visual language of Statecharts and tools for its execution, enables rigorous qualitative and quantitative tracking, analysis and documentation of the underlying creation and interaction processes. Also, it enables one to carry out exploratory, hypotheses-generating and knowledge discovery investigations, which are empirical-based. Furthermore, we illustrate our method's use in a proof-of-principle study, applying it to a real-world artwork investigation with human participants. We explore individual and collective emergent behaviors impacted by diverse drawing tasks, yielding significant gender and age hypotheses, which may account for variation factors in response to art use. We also discuss how to gear our research method to systematic and

  4. State-of-the-art

    DEFF Research Database (Denmark)

    Pecher, Arthur; Kofoed, Jens Peter

    This report presents a short overview on the state-of-the-art of wave tank testing of wave energy converters (WEC). Here for, it focuses mainly on the Phase 1 and 2 development phases of wave energy converters, as these are done in the wave tank (WEC), while the other development phases are perfo......This report presents a short overview on the state-of-the-art of wave tank testing of wave energy converters (WEC). Here for, it focuses mainly on the Phase 1 and 2 development phases of wave energy converters, as these are done in the wave tank (WEC), while the other development phases...

  5. Digital Da Vinci computers in the arts and sciences

    CERN Document Server

    Lee, Newton

    2014-01-01

    Explores polymathic education through unconventional and creative applications of computer science in the arts and sciences Examines the use of visual computation, 3d printing, social robotics and computer modeling for computational art creation and design Includes contributions from leading researchers and practitioners in computer science, architecture and digital media

  6. Mathematical and computational modeling with applications in natural and social sciences, engineering, and the arts

    CERN Document Server

    Melnik, Roderick

    2015-01-01

    Illustrates the application of mathematical and computational modeling in a variety of disciplines With an emphasis on the interdisciplinary nature of mathematical and computational modeling, Mathematical and Computational Modeling: With Applications in the Natural and Social Sciences, Engineering, and the Arts features chapters written by well-known, international experts in these fields and presents readers with a host of state-of-the-art achievements in the development of mathematical modeling and computational experiment methodology. The book is a valuable guide to the methods, ideas,

  7. Ascertaining the international state of the art of PSA methodology

    International Nuclear Information System (INIS)

    Linden, J. von

    1998-01-01

    Plant-specific PSAs, to be performed within the framework of the Periodic Safety Review of German Nuclear Power Plants require further development of the methodology. For that purpose foreign PSA-guidelines and PSA-reviewes as well as relevant literature are examined and appropriate insights are adopted within task A.2 of project SR 2096. The main goal of these activities is to achieve a comparison of the state of the art of PSA-methodologies applied abroad and in Germany. The German state of the art refers to the extent as is documented in the German PSA Guide (Leitfaden Probabilistische Sicherheitsanalyse /PSUe97/) which has to be used for the Periodic Safety Review of German Nuclear Power Plants. The structure for the evaluation is based on the working steps of a PSA. In total, according to the objectives of the Periodic Safety Review the German approach for plant-specific PSAs based on the German PSA Guide is conform to the state of the art abroad. Identified deviations in some details are evaluated reflecting the view of GRS. Particular aspects resulting from the evaluation should be considered for further development of the German PSA Guide. (orig.) [de

  8. Computer Science and the Liberal Arts: A Philosophical Examination

    Science.gov (United States)

    Walker, Henry M.; Kelemen, Charles

    2010-01-01

    This article explores the philosophy and position of the discipline of computer science within the liberal arts, based upon a discussion of the nature of computer science and a review of the characteristics of the liberal arts. A liberal arts environment provides important opportunities for undergraduate programs, but also presents important…

  9. Cultivating Demand for the Arts: Arts Learning, Arts Engagement, and State Arts Policy. Summary

    Science.gov (United States)

    Zakaras, Laura; Lowell, Julia F.

    2008-01-01

    The findings summarized in this report are intended to shed light on what it means to cultivate demand for the arts, why it is necessary and important to cultivate this demand, and what state arts agencies (SAAs) and other arts and education policymakers can do to help. The research considered only the benchmark arts central to public policy:…

  10. Computer technologies of future teachers of fine art training as an object of scientific educational research

    Directory of Open Access Journals (Sweden)

    Bohdan Cherniavskyi

    2017-03-01

    Full Text Available The article deals with computer technology training, highlights the current state ofcomputerization of educational process in teacher training colleges, reveals the specifictechniques of professional training of teachers of fine arts to use computer technology inteaching careers.Key words: Methods of professional training, professional activities, computertechnology training future teachers of Fine Arts, the subject of research.

  11. Support for Arts Education. State Arts Agency Fact Sheet

    Science.gov (United States)

    National Assembly of State Arts Agencies, 2011

    2011-01-01

    Supporting lifelong learning in the arts is a top priority for state arts agencies. By supporting arts education in the schools, state arts agencies foster young imaginations, address core academic standards, and promote the critical thinking and creativity skills essential to a 21st century work force. State arts agencies also support…

  12. The role of physical processes controlling the behaviour of radionuclide contaminants in the aquatic environment: a review of state-of-the-art modelling approaches

    International Nuclear Information System (INIS)

    Monte, Luigi; Perianez, Raul; Boyer, Patrick; Smith, Jim T.; Brittain, John E.

    2009-01-01

    This paper is aimed at presenting and discussing the methodologies implemented in state-of-the-art models for predicting the physical processes of radionuclide migration through the aquatic environment, including transport due to water currents, diffusion, settling and re-suspension. Models are briefly described, model parameter values reviewed and values recommended. The different modelling approaches are briefly classified and the advantages and disadvantages of the various model approaches and methodologies are assessed.

  13. State Arts Agency Fact Sheet: Support for Arts Education

    Science.gov (United States)

    Online Submission, 2015

    2015-01-01

    This national overview of state arts agency grants and services for arts education includes summary statistics and geographic distribution. The fact sheet uses data from Final Descriptive Reports of state arts agency grant-making activities submitted annually to the National Assembly of State Arts Agencies (NASAA) and the National Endowment for…

  14. State-of-the-art methodology of forest inventory: a symposium proceedings.

    Science.gov (United States)

    Vernon J. LaBau; Tiberius Cunia

    1990-01-01

    The state-of-the-art of forest inventory methodology, being closely integrated with the fast-moving, high technology computer world, has been changing at a rapid pace over the past decade. Several successful conferences were held during the 1980s with the goal and purpose of staying abreast of such change. This symposium was conceived, not just with the idea of helping...

  15. State of the States 2016: Arts Education State Policy Summary

    Science.gov (United States)

    Aragon, Stephanie

    2016-01-01

    The "State of the States 2016" summarizes state policies for arts education identified in statute or administrative code for all 50 states and the District of Columbia. Information is based on a comprehensive search of state education statute and codes on each state's relevant websites. Complete results from this review are available in…

  16. Digital astrophotography the state of the art

    CERN Document Server

    Ratledge, David

    2005-01-01

    The CCD (Charge-Coupled Device) has revolutionised optical astronomy during the past 20 years, and specialised astronomical CCD cameras are now even more affordable, colour is standard, and they provide spectacular results. "Digital Astrophotography: The State of the Art", provides some examples of the best images, and gives readers hints and tips about how to get the best out of this extraordinary technology. Experts in CCD astronomy from North America and Europe have contributed to this book, illustrating their help and advice with many beautiful colour images - the book is in full colour throughout. Techniques range from using simple webcams to highly technical aspects such as supernovae patrolling. Computer processing, stacking and image-enhancement are detailed, along with many hints and tips from the experts.

  17. Aeroelastic Tailoring of Transport Aircraft Wings: State-of-the-Art and Potential Enabling Technologies

    Science.gov (United States)

    Jutte, Christine; Stanford, Bret K.

    2014-01-01

    This paper provides a brief overview of the state-of-the-art for aeroelastic tailoring of subsonic transport aircraft and offers additional resources on related research efforts. Emphasis is placed on aircraft having straight or aft swept wings. The literature covers computational synthesis tools developed for aeroelastic tailoring and numerous design studies focused on discovering new methods for passive aeroelastic control. Several new structural and material technologies are presented as potential enablers of aeroelastic tailoring, including selectively reinforced materials, functionally graded materials, fiber tow steered composite laminates, and various nonconventional structural designs. In addition, smart materials and structures whose properties or configurations change in response to external stimuli are presented as potential active approaches to aeroelastic tailoring.

  18. State of the art

    International Nuclear Information System (INIS)

    Lederman, L.M.

    1983-01-01

    There is a large body of experience in high luminosity data taking in fixed target research. We try to consider a wide variety of high rate experiments which were limited by the detector (not by available beam) to a preset number of collisions per second. We then attempt to translate these state-of-the-art experiments to effective collider experiments. To this end, we extend the chosen detector to a comparison 4π collider detector operating near 1 TeV. There are several issues: (1) effective solid angle must be translated to approx. = 4π, (2) environments may be quite different, e.g., beam dump near fixed target or beam halo muons vs. collider backgrounds, (3) the multiplicity varies over the experiments selected and (4) we have to treat open vs closed geometries. The large variety of experiments selected is designed to average over the causes for detector limitation. Finally we chose detectors which have produced physics in order to gauge the state of the art

  19. Prediction of CRUD deposition on PWR fuel using a state-of-the-art CFD-based multi-physics computational tool

    Energy Technology Data Exchange (ETDEWEB)

    Petrov, Victor [Department of Nuclear Engineering & Radiological Sciences, University of Michigan, 2355 Bonisteel Boulv, Ann Arbor, MI (United States); Kendrick, Brian K. [Theoretical Division (T-1, MS B221), Los Alamos National Laboratory, Los Alamos, NM 87545 (United States); Walter, Daniel [Department of Nuclear Engineering & Radiological Sciences, University of Michigan, 2355 Bonisteel Boulv, Ann Arbor, MI (United States); Manera, Annalisa, E-mail: manera@umich.edu [Department of Nuclear Engineering & Radiological Sciences, University of Michigan, 2355 Bonisteel Boulv, Ann Arbor, MI (United States); Secker, Jeffrey [Westinghouse Electric Company Nuclear Fuel Division, 1000 Westinghouse Drive, Cranberry Township, PA 16066 (United States)

    2016-04-01

    In the present paper we report about the first attempt to demonstrate and assess the ability of state-of-the-art high-fidelity computational tools to reproduce the complex patterns of CRUD deposits found on the surface of operating Pressurized Water Reactors (PWRs) fuel rods. A fuel assembly of the Seabrook Unit 1 PWR was selected as the test problem. During Seabrook Cycle 5, CRUD induced power shift (CIPS) and CRUD induced localized corrosion (CILC) failures were observed. Measurements of the clad oxide thickness on both failed and non-failed rods are available, together with visual observations and the results from CRUD scrapes of peripheral rods. Blind simulations were performed using the Computational Fluid Dynamics (CFD) code STAR-CCM+ coupled to an advanced chemistry code, MAMBA, developed at Los Alamos National Laboratory. The blind simulations were then compared to plant data, which were released after completion of the simulations.

  20. The state of the art in intrusion prevention and detection

    CERN Document Server

    Pathan, Al-Sakib Khan

    2013-01-01

    The State of the Art in Intrusion Prevention and Detection analyzes the latest trends and issues surrounding intrusion detection systems in computer networks, especially in communications networks. Its broad scope of coverage includes wired, wireless, and mobile networks; next-generation converged networks; and intrusion in social networks.Presenting cutting-edge research, the book presents novel schemes for intrusion detection and prevention. It discusses tracing back mobile attackers, secure routing with intrusion prevention, anomaly detection, and AI-based techniques. It also includes infor

  1. Investigating the Impact of Computer Technology on the Teaching and Learning of Graphic Arts in Nigeria Osun State College of Education Ila-Orangun as a Case Study

    Science.gov (United States)

    Abass, Bada Tayo

    2012-01-01

    This paper focused on the use of computer technology in the teaching and learning of graphic arts in Nigeria colleges of Education. Osun State Colleges of Education Ila-Orangun was used as a case study. The population of the study consisted of all Graphic students in Nigeria colleges of Education. 50 subjects were used for the study while…

  2. State of the art: two-phase flow calibration techniques

    International Nuclear Information System (INIS)

    Stanley, M.L.

    1977-01-01

    The nuclear community faces a particularly difficult problem relating to the calibration of instrumentation in a two-phase flow steam/water environment. The rationale of the approach to water reactor safety questions in the United States demands that accurate measurements of mass flows in a decompressing two-phase flow be made. An accurate measurement dictates an accurate calibration. This paper addresses three questions relating to the state of the art in two-phase calibration: (1) What do we mean by calibration. (2) What is done now. (3) What should be done

  3. Cloud Computing Cryptography "State-of-the-Art"

    OpenAIRE

    Omer K. Jasim; Safia Abbas; El-Sayed M. El-Horbaty; Abdel-Badeeh M. Salem

    2013-01-01

    Cloud computing technology is very useful in present day to day life, it uses the internet and the central remote servers to provide and maintain data as well as applications. Such applications in turn can be used by the end users via the cloud communications without any installation. Moreover, the end users’ data files can be accessed and manipulated from any other computer using the internet services. Despite the flexibility of data and application accessing and usage that cloud computing e...

  4. State of the art of computer codes and experimental investigations on safety of nuclear power plants with reactors of WWER type

    International Nuclear Information System (INIS)

    Asmolov, V.G.; Volkov, G.A.; Elikin, I.V.; Mysenkov, A.I.

    1987-01-01

    As is well-known investigations on mathematical models of accidental situations from the point of view of nuclear safety as well as their experimental investigation are of great importance in the design of reactor units for nuclear power plants. This paper gives a review of the state of the art of thermodynamic models and computer codes used for safety analysis of WWER reactors in the USSR, the experimental basis and experimental investigations of the appropriate thermal processes. The actual and future trends of theoretical and experimental investigation on safety problems of WWER type nuclear power plants are briefly described. (author)

  5. Pattern Recognition and Natural Language Processing: State of the Art

    Directory of Open Access Journals (Sweden)

    Mirjana Kocaleva

    2016-05-01

    Full Text Available Development of information technologies is growing steadily. With the latest software technologies development and application of the methods of artificial intelligence and machine learning intelligence embededs in computers, the expectations are that in near future computers will be able to solve problems themselves like people do. Artificial intelligence emulates human behavior on computers. Rather than executing instructions one by one, as theyare programmed, machine learning employs prior experience/data that is used in the process of system’s training. In this state of the art paper, common methods in AI, such as machine learning, pattern recognition and the natural language processing (NLP are discussed. Also are given standard architecture of NLP processing system and the level thatisneeded for understanding NLP. Lastly the statistical NLP processing and multi-word expressions are described.

  6. The Art of the Renaissance Capitalist State

    Directory of Open Access Journals (Sweden)

    Rebeka Vidrih

    2007-12-01

    This article also highlights the fact that the concept of art developed in Florence – a city-state that played an important role in the early-capitalist world of the Renaissance, but never assumed a leading role like Venice and Genoa. »Art« was thus created through Florence’s efforts to demonstrate its equality and importance and, although it failed to achieve this in the field of the (capitalist economy, it at least succeeded in the field of the (absolutist state that was subordinate to this economy.

  7. Brain-computer interfaces for arts

    NARCIS (Netherlands)

    Gürkök, Hayrettin; Nijholt, Antinus; D' Mello, S.; Pantic, Maja

    2013-01-01

    We experience positive emotions when our hedonic needs, such as virtuosity or relatedness, are satisfied. Creating art is one way of satisfying these needs, so artistic computer applications can be considered as ‘affective’. Artistic braincomputer interfaces (BCIs), which allow people to create art

  8. The Status of Interactivity in Computer Art: Formal Apories

    Directory of Open Access Journals (Sweden)

    João Castro Pinto

    2011-12-01

    Full Text Available Contemporary art, particularly that which is produced by computer technologies capable of receiving data input via interactive devices (sensors and controllers, constitutes an emerging expressive medium of interdisciplinary nature, which implies the need for a critical look at its constitution and artistic functions. To consider interactive art as a form of artistic expression that files under the present categorization, implies the acceptance of the participation of the spectator in the production of the work of art, supposedly at the time of its origin / or during its creation. When we examine the significance of the formal status of interactivity, assuming as a theoretical starting point the referred premises and reducing it to a phenomenological point of view of artistic creation, we quickly fall into difficulties of conceptual definitions and structural apories [1]. The fundamental aim of this research is to formally define the status of interactive art, by perpetrating a phenomenological examination on the creative process of this specific art, establishing crucial distinctions in order to develop a hermeneutics in favor of creation of new perspectives and aesthetic frameworks. What is interactive creation? Is interactivity, from the computing artistic creativity point of view, the exponentiation of the concept of the open work of art (ECO 2009? Does interactive art correspond to an a priori projective and unachievable meta-art? What is the status of the artist and of the spectator in relation to an interactive work of art? What ontic and factical conditions are postulated as necessary in order to determine an artistic product as co-created? What apories do we find along the progres- sive process of reaching to a clarifying conceptual definition?This brief investigation will seek to contribute to the study of this issue, intending ultimately, and above all, to expose pertinent lines of inquiry rather than to provide definite scientific and

  9. State-of-the-art risk-based approach to spill contingency planning and risk management

    International Nuclear Information System (INIS)

    Schmidt Etkin, Dagmar; Reilly, Timothy; French McCay, Deborah

    2011-01-01

    The paper proposes incorporating a comprehensive examination of spill risk into risk management and contingency planning, and applying state-of-the-art modeling tools to evaluate various alternatives for appropriate spill response measures and optimize protective responses. The approach allows spill contingency planners and decision-makers to determine the types of spill scenarios that may occur in a particular location or from a particular source and calculate the probability distribution of the various scenarios. The spill probability information is useful in assessing and putting into perspective the various costs options for spill control systems that will be recommended ultimately. Using advanced modeling tools helps in estimating the potential environmental and socioeconomic consequences of each spill scenario based on location-specific factors over a range of stochastic possibilities, simulating spill scenarios and determining optimal responses and protection strategies. The benefits and costs of various response alternatives and variations in response time can be calculated and modeling tools for training and risk allocation/transfer purposes used.

  10. Evolution of the the ART approach: highlights and achievements

    Directory of Open Access Journals (Sweden)

    Jo E. Frencken

    2009-01-01

    Full Text Available Atraumatic Restorative Treatment (ART was initiated in the mid-eighties in Tanzania in response to an inappropriately functioning community oral health programme that was based on western health care models and western technology. The approach has evolved to its present standing as an effective minimal intervention approach mainly because the originators anticipated the great potential of ART to alleviate inequality in oral health care, and because they recognised the need to carry out research to investigate its effectiveness and applicability. Twenty-five years later, ART was accepted by the World Health Organisation (1994 and the FDI World Dental Federation (2002. It is included in textbooks on cariology, restorative dentistry and minimal intervention dentistry. It is being systematically introduced into public oral health service systems in a number of low- and middle income countries. Private practitioners use it. Many publications related to aspects of ART have been published and many more will follow. To achieve quality results with ART one has to attend well-conducted and sufficiently long training courses, preferably in combination with other caries preventive strategies. ART should, therefore, not be considered in isolation and must be part of an evidence-based approach to oral health with a strong foundation based on prevention.

  11. From Digital Imaging to Computer Image Analysis of Fine Art

    Science.gov (United States)

    Stork, David G.

    An expanding range of techniques from computer vision, pattern recognition, image analysis, and computer graphics are being applied to problems in the history of art. The success of these efforts is enabled by the growing corpus of high-resolution multi-spectral digital images of art (primarily paintings and drawings), sophisticated computer vision methods, and most importantly the engagement of some art scholars who bring questions that may be addressed through computer methods. This paper outlines some general problem areas and opportunities in this new inter-disciplinary research program.

  12. EVALUATION OF THE STATE-OF-THE-ART CONTAMINATED SEDIMENT TRANSPORT AND FATE MODELING SYSTEM

    Science.gov (United States)

    Modeling approaches for evaluating the transport and fate of sediment and associated contaminants are briefly reviewed. The main emphasis is on: 1) the application of EFDC (Environmental Fluid Dynamics Code), the state-of-the-art contaminated sediment transport and fate public do...

  13. The state-of-the-art of the LTA{sub N} method in the solution of the transport equation in a slab

    Energy Technology Data Exchange (ETDEWEB)

    Vieira Cardona, A. [Faculty of Mathematics, PUCRS, Porto-Alegre (Brazil); Panta Pazos, R. [Nulcear Engineering Department, UFRGS, Porto-Alegre (Brazil); Tullio de Vilhena, M. [Institute of Mathematics, UFRGS, Porto-Alegre (Brazil)

    2004-07-01

    In this work we report the state-of-the-art of the LTA{sub N} method, reporting the derivation of the LTA{sub N} homogeneous and particular solution in a slab for large N (N < 650), as well its accelerated version, which reduces drastically the computational time. We also sketch the mathematical background for the error bound estimate and convergence analysis of the LTA{sub N} method. We show that the LTA{sub N} method, consequently the Laplace transform technique, is a quite general approach to solve a wide class of transport problems in a slab mainly the ones requiring an arbitrary source and large N.

  14. u-Healthcare system: state-of-the-art review and challenges.

    Science.gov (United States)

    Touati, Farid; Tabish, Rohan

    2013-06-01

    With the increase of an ageing population and chronic diseases, society becomes more health conscious and patients become "health consumers" looking for better health management. People's perception is shifting towards patient-centered, rather than the classical, hospital-centered health services which has been propelling the evolution of telemedicine research from the classic e-Health to m-Health and now is to ubiquitous healthcare (u-Health). It is expected that mobile & ubiquitous Telemedicine, integrated with Wireless Body Area Network (WBAN), have a great potential in fostering the provision of next-generation u-Health. Despite the recent efforts and achievements, current u-Health proposed solutions still suffer from shortcomings hampering their adoption today. This paper presents a comprehensive review of up-to-date requirements in hardware, communication, and computing for next-generation u-Health systems. It compares new technological and technical trends and discusses how they address expected u-Health requirements. A thorough survey on various worldwide recent system implementations is presented in an attempt to identify shortcomings in state-of-the art solutions. In particular, challenges in WBAN and ubiquitous computing were emphasized. The purpose of this survey is not only to help beginners with a holistic approach toward understanding u-Health systems but also present to researchers new technological trends and design challenges they have to cope with, while designing such systems.

  15. A History of the Liberal Arts Computer Science Consortium and Its Model Curricula

    Science.gov (United States)

    Bruce, Kim B.; Cupper, Robert D.; Scot Drysdale, Robert L.

    2010-01-01

    With the support of a grant from the Sloan Foundation, nine computer scientists from liberal arts colleges came together in October, 1984 to form the Liberal Arts Computer Science Consortium (LACS) and to create a model curriculum appropriate for liberal arts colleges. Over the years the membership has grown and changed, but the focus has remained…

  16. Orphan diseases: state of the drug discovery art.

    Science.gov (United States)

    Volmar, Claude-Henry; Wahlestedt, Claes; Brothers, Shaun P

    2017-06-01

    Since 1983 more than 300 drugs have been developed and approved for orphan diseases. However, considering the development of novel diagnosis tools, the number of rare diseases vastly outpaces therapeutic discovery. Academic centers and nonprofit institutes are now at the forefront of rare disease R&D, partnering with pharmaceutical companies when academic researchers discover novel drugs or targets for specific diseases, thus reducing the failure risk and cost for pharmaceutical companies. Considerable progress has occurred in the art of orphan drug discovery, and a symbiotic relationship now exists between pharmaceutical industry, academia, and philanthropists that provides a useful framework for orphan disease therapeutic discovery. Here, the current state-of-the-art of drug discovery for orphan diseases is reviewed. Current technological approaches and challenges for drug discovery are considered, some of which can present somewhat unique challenges and opportunities in orphan diseases, including the potential for personalized medicine, gene therapy, and phenotypic screening.

  17. Mechanical Ventilation: State of the Art.

    Science.gov (United States)

    Pham, Tài; Brochard, Laurent J; Slutsky, Arthur S

    2017-09-01

    Mechanical ventilation is the most used short-term life support technique worldwide and is applied daily for a diverse spectrum of indications, from scheduled surgical procedures to acute organ failure. This state-of-the-art review provides an update on the basic physiology of respiratory mechanics, the working principles, and the main ventilatory settings, as well as the potential complications of mechanical ventilation. Specific ventilatory approaches in particular situations such as acute respiratory distress syndrome and chronic obstructive pulmonary disease are detailed along with protective ventilation in patients with normal lungs. We also highlight recent data on patient-ventilator dyssynchrony, humidified high-flow oxygen through nasal cannula, extracorporeal life support, and the weaning phase. Finally, we discuss the future of mechanical ventilation, addressing avenues for improvement. Copyright © 2017 Mayo Foundation for Medical Education and Research. Published by Elsevier Inc. All rights reserved.

  18. Primary system fission product release and transport. A state-of-the-art report to the committee on the safety of nuclear installations

    International Nuclear Information System (INIS)

    Wright, A.L.

    1994-06-01

    This report presents a summary of the status of research activities associated with fission product behavior (release and transport) under severe accident conditions within the primary systems of water-moderated and water-cooled nuclear reactors. For each of the areas of fission product release and fission product transport, the report summarizes relevant information on important phenomena, major experiments performed, relevant computer models and codes, comparisons of computer code calculations with experimental results, and general conclusions on the overall state of the art. Finally, the report provides an assessment of the overall importance and knowledge of primary system release and transport phenomena and presents major conclusions on the state of the art

  19. Primary system fission product release and transport: A state-of-the-art report to the committee on the safety of nuclear installations

    International Nuclear Information System (INIS)

    Wright, A.L.

    1994-06-01

    This report presents a summary of the status of research activities associated with fission product behavior (release and transport) under severe accident conditions within the primary systems of water-moderated and water-cooled nuclear reactors. For each of the areas of fission product release and fission product transport, the report summarizes relevant information on important phenomena, major experiments performed, relevant computer models and codes, comparisons of computer code calculations with experimental results, and general conclusions on the overall state of the art. Finally, the report provides an assessment of the overall importance and knowledge of primary system release and transport phenomena and presents major conclusions on the state of the art

  20. Primary system fission product release and transport: A state-of-the-art report to the committee on the safety of nuclear installations

    Energy Technology Data Exchange (ETDEWEB)

    Wright, A.L. [Oak Ridge National Lab., TN (United States)

    1994-06-01

    This report presents a summary of the status of research activities associated with fission product behavior (release and transport) under severe accident conditions within the primary systems of water-moderated and water-cooled nuclear reactors. For each of the areas of fission product release and fission product transport, the report summarizes relevant information on important phenomena, major experiments performed, relevant computer models and codes, comparisons of computer code calculations with experimental results, and general conclusions on the overall state of the art. Finally, the report provides an assessment of the overall importance and knowledge of primary system release and transport phenomena and presents major conclusions on the state of the art.

  1. a Holistic Approach for Inspection of Civil Infrastructures Based on Computer Vision Techniques

    Science.gov (United States)

    Stentoumis, C.; Protopapadakis, E.; Doulamis, A.; Doulamis, N.

    2016-06-01

    In this work, it is examined the 2D recognition and 3D modelling of concrete tunnel cracks, through visual cues. At the time being, the structural integrity inspection of large-scale infrastructures is mainly performed through visual observations by human inspectors, who identify structural defects, rate them and, then, categorize their severity. The described approach targets at minimum human intervention, for autonomous inspection of civil infrastructures. The shortfalls of existing approaches in crack assessment are being addressed by proposing a novel detection scheme. Although efforts have been made in the field, synergies among proposed techniques are still missing. The holistic approach of this paper exploits the state of the art techniques of pattern recognition and stereo-matching, in order to build accurate 3D crack models. The innovation lies in the hybrid approach for the CNN detector initialization, and the use of the modified census transformation for stereo matching along with a binary fusion of two state-of-the-art optimization schemes. The described approach manages to deal with images of harsh radiometry, along with severe radiometric differences in the stereo pair. The effectiveness of this workflow is evaluated on a real dataset gathered in highway and railway tunnels. What is promising is that the computer vision workflow described in this work can be transferred, with adaptations of course, to other infrastructure such as pipelines, bridges and large industrial facilities that are in the need of continuous state assessment during their operational life cycle.

  2. Distributional and Knowledge-Based Approaches for Computing Portuguese Word Similarity

    Directory of Open Access Journals (Sweden)

    Hugo Gonçalo Oliveira

    2018-02-01

    Full Text Available Identifying similar and related words is not only key in natural language understanding but also a suitable task for assessing the quality of computational resources that organise words and meanings of a language, compiled by different means. This paper, which aims to be a reference for those interested in computing word similarity in Portuguese, presents several approaches for this task and is motivated by the recent availability of state-of-the-art distributional models of Portuguese words, which add to several lexical knowledge bases (LKBs for this language, available for a longer time. The previous resources were exploited to answer word similarity tests, which also became recently available for Portuguese. We conclude that there are several valid approaches for this task, but not one that outperforms all the others in every single test. Distributional models seem to capture relatedness better, while LKBs are better suited for computing genuine similarity, but, in general, better results are obtained when knowledge from different sources is combined.

  3. State-of-the-art inventory

    NARCIS (Netherlands)

    Verhagen, H.J.; Van Gerven, K.A.J.; Akkerman, G.J.

    2005-01-01

    The present report provides a state-of-the-art inventory of relevant information and technical concepts for the ComCoast project, being the first phase of the research stages of Work Package 3 (WP3). This project was assigned to Royal Haskoning by CUR. The information scan was set-up in a systematic

  4. Greenhouse mechanization: State of the art and future perspective

    NARCIS (Netherlands)

    Henten, van E.

    2006-01-01

    This paper reviews the state of the art and future perspective of greenhouse mechanization. Driving forces for mechanization are identified. Dutch greenhouse crop production is used as an example. Analysis of a generic crop production process combined with a review of the state of the art in

  5. Fuel cells: state of the art

    International Nuclear Information System (INIS)

    Campanari, S.; Casalegno, A.

    2007-01-01

    This paper deals with the main features at present state-of-the-art fuel cell and hybrid cycle technologies, discussing their actual performance, possible applications, market entry perspectives and potential development [it

  6. Heteronomy in the arts field: state funding and British arts organizations.

    Science.gov (United States)

    Alexander, Victoria D

    2018-03-01

    For Bourdieu, the field of cultural production is comprised of an autonomous and a heteronomous sector. A heteronomous sector is one that is interpenetrated by the commercial field. I discuss an arena that, until recently, was part of the relatively autonomous sector in the field of cultural production - the supported arts sector in the United Kingdom - and argue that it became more heteronomous, due to the penetration by the state. Heteronomy due to the commercial field is present but secondary to, and driven by, the actions of the state. Political parties' attempts to diffuse and legitimate a particular economic ideology have led to state demands that arts institutions adopt neoliberal business practices in exchange for funding. Government giving to the arts, previously at arm's length, proved to be a Faustian bargain that demanded significant repayment in the form of lost autonomy. Coercive pressures from the state, enacted over time, show how the domination of one field over another can occur, even when the domination is resisted. © London School of Economics and Political Science 2017.

  7. The emancipatory character of action research, its history and the present state of the art

    NARCIS (Netherlands)

    Boog, B.

    2003-01-01

    Right from the start. action research was intended to be emancipatory research, and it still is. This article will underpin this by outlining its history and the present state of the art. Though a variety of action research approaches have developed along divergent theoretical pathways, it will be

  8. State of the art undersøgelse

    DEFF Research Database (Denmark)

    Nielsen, Nils

    1998-01-01

    Dette skrift omhandler nogle af de erfaringer der til dato er opnået i forbindelse med standby projektets udførelse. Hovedtemaet er en “State of the art undersøgelse” der omhandler standby-spændingsforsyninger, samt komponenter der kan anvendes til konstruktion af dem......Dette skrift omhandler nogle af de erfaringer der til dato er opnået i forbindelse med standby projektets udførelse. Hovedtemaet er en “State of the art undersøgelse” der omhandler standby-spændingsforsyninger, samt komponenter der kan anvendes til konstruktion af dem...

  9. Computer Art--A New Tool in Advertising Graphics.

    Science.gov (United States)

    Wassmuth, Birgit L.

    Using computers to produce art began with scientists, mathematicians, and individuals with strong technical backgrounds who used the graphic material as visualizations of data in technical fields. People are using computer art in advertising, as well as in painting; sculpture; music; textile, product, industrial, and interior design; architecture;…

  10. Where is your state of the art?

    Science.gov (United States)

    Ríos Gaona, Manuel

    2015-04-01

    Beyond the purposes of publishing, questioning and/or hypothesizing, every research has the noble aim to quench the constant human need of pushing farther away the boundaries of knowledge, may such frontier exist. The state of the art is the generic expression coined to limit the whereabouts of any particular knowledge. We use it just like a compass, it tells us how far we are, what has been done and where we should go. Take for instance quantum field theory, the state of the art in particle physics will tell you that everything that exists in this universe is made of bosons, quarks and leptons. What!?. Hold on, I was taught (and luckily maybe you weren't) that the fundamental particles were electrons, neutrons and protons, right?. Indeed, that is the state of the art but from almost one century ago. So, if I may ask... where is your state of the art? This is not about quantum physics; it is not even about hydrology; it is about everything. Today, everybody doing or not a PhD fiercely believes that their research is important, extremely unique, life changing (and help us God if we are wrong); but how can you be so sure that what you do, isn't already done?. We live in a modern world, cool environmental scientists now have tagged this era as the Anthropocene; globalization is everywhere and of course knowledge has not escaped to it. Not only knowledge is now global but is totally diversified, any crazy idea you can think of (or actually you can't) it is very likely that somebody already has his/hers hands on it. Nevertheless, this is a good thing, isn't it?. Well, that is the whole point. Every time I should write my research's state of the art, I always get overwhelmed because it actually is pretty difficult to establish, and later when I think I get it, it seems that I am solving issues that somebody already bothered to solve 30 years ago. Therefore, does it really have some purpose to be swimming in a huge pool of knowledge, not knowing where exactly I am? or

  11. State of the Art in the Cramer Classification Scheme and ...

    Science.gov (United States)

    Slide presentation at the SOT FDA Colloquium on State of the Art in the Cramer Classification Scheme and Threshold of Toxicological Concern in College Park, MD. Slide presentation at the SOT FDA Colloquium on State of the Art in the Cramer Classification Scheme and Threshold of Toxicological Concern in College Park, MD.

  12. The state of the art of numerical modeling of thermohydrologic flow in fractured rock masses

    International Nuclear Information System (INIS)

    Wang, J.S.Y.; Sterbentz, R.A.; Tsang, C.F.

    1982-01-01

    The state of the art of numerical modeling of thermohydrologic flow in fractured rock masses is reviewed and a comparative study is made of several models which have been developed in nuclear waste isolation, geothermal energy, ground water hydrology, petroleum engineering, and other geologic fields. The general review is followed by individual summaries of each model and the main characteristics of its governing equations, numerical solutions, computer codes, validations, and applications

  13. Efficient Discovery of Novel Multicomponent Mixtures for Hydrogen Storage: A Combined Computational/Experimental Approach

    Energy Technology Data Exchange (ETDEWEB)

    Wolverton, Christopher [Northwestern Univ., Evanston, IL (United States). Dept. of Materials Science and Engineering; Ozolins, Vidvuds [Univ. of California, Los Angeles, CA (United States). Dept. of Materials Science and Engineering; Kung, Harold H. [Northwestern Univ., Evanston, IL (United States). Dept. of Chemical and Biological Engineering; Yang, Jun [Ford Scientific Research Lab., Dearborn, MI (United States); Hwang, Sonjong [California Inst. of Technology (CalTech), Pasadena, CA (United States). Dept. of Chemistry and Chemical Engineering; Shore, Sheldon [The Ohio State Univ., Columbus, OH (United States). Dept. of Chemistry and Biochemistry

    2016-11-28

    The objective of the proposed program is to discover novel mixed hydrides for hydrogen storage, which enable the DOE 2010 system-level goals. Our goal is to find a material that desorbs 8.5 wt.% H2 or more at temperatures below 85°C. The research program will combine first-principles calculations of reaction thermodynamics and kinetics with material and catalyst synthesis, testing, and characterization. We will combine materials from distinct categories (e.g., chemical and complex hydrides) to form novel multicomponent reactions. Systems to be studied include mixtures of complex hydrides and chemical hydrides [e.g. LiNH2+NH3BH3] and nitrogen-hydrogen based borohydrides [e.g. Al(BH4)3(NH3)3]. The 2010 and 2015 FreedomCAR/DOE targets for hydrogen storage systems are very challenging, and cannot be met with existing materials. The vast majority of the work to date has delineated materials into various classes, e.g., complex and metal hydrides, chemical hydrides, and sorbents. However, very recent studies indicate that mixtures of storage materials, particularly mixtures between various classes, hold promise to achieve technological attributes that materials within an individual class cannot reach. Our project involves a systematic, rational approach to designing novel multicomponent mixtures of materials with fast hydrogenation/dehydrogenation kinetics and favorable thermodynamics using a combination of state-of-the-art scientific computing and experimentation. We will use the accurate predictive power of first-principles modeling to understand the thermodynamic and microscopic kinetic processes involved in hydrogen release and uptake and to design new material/catalyst systems with improved properties. Detailed characterization and atomic-scale catalysis experiments will elucidate the effect of dopants and nanoscale catalysts in achieving fast kinetics and reversibility. And

  14. A HOLISTIC APPROACH FOR INSPECTION OF CIVIL INFRASTRUCTURES BASED ON COMPUTER VISION TECHNIQUES

    Directory of Open Access Journals (Sweden)

    C. Stentoumis

    2016-06-01

    Full Text Available In this work, it is examined the 2D recognition and 3D modelling of concrete tunnel cracks, through visual cues. At the time being, the structural integrity inspection of large-scale infrastructures is mainly performed through visual observations by human inspectors, who identify structural defects, rate them and, then, categorize their severity. The described approach targets at minimum human intervention, for autonomous inspection of civil infrastructures. The shortfalls of existing approaches in crack assessment are being addressed by proposing a novel detection scheme. Although efforts have been made in the field, synergies among proposed techniques are still missing. The holistic approach of this paper exploits the state of the art techniques of pattern recognition and stereo-matching, in order to build accurate 3D crack models. The innovation lies in the hybrid approach for the CNN detector initialization, and the use of the modified census transformation for stereo matching along with a binary fusion of two state-of-the-art optimization schemes. The described approach manages to deal with images of harsh radiometry, along with severe radiometric differences in the stereo pair. The effectiveness of this workflow is evaluated on a real dataset gathered in highway and railway tunnels. What is promising is that the computer vision workflow described in this work can be transferred, with adaptations of course, to other infrastructure such as pipelines, bridges and large industrial facilities that are in the need of continuous state assessment during their operational life cycle.

  15. Guide to state-of-the-art electron devices

    CERN Document Server

    2013-01-01

    Concise, high quality and comparative overview of state-of-the-art electron device development, manufacturing technologies and applications Guide to State-of-the-Art Electron Devices marks the 60th anniversary of the IEEE Electron Devices Committee and the 35th anniversary of the IEEE Electron Devices Society, as such it defines the state-of-the-art of electron devices, as well as future directions across the entire field. Spans full range of electron device types such as photovoltaic devices, semiconductor manufacturing and VLSI technology and circuits, covered by IEEE Electron and Devices Society Contributed by internationally respected members of the electron devices community A timely desk reference with fully-integrated colour and a unique lay-out with sidebars to highlight the key terms Discusses the historical developments and speculates on future trends to give a more rounded picture of the topics covered A valuable resource R&D managers; engineers in the semiconductor industry; applied scientists...

  16. Kernel Bayesian ART and ARTMAP.

    Science.gov (United States)

    Masuyama, Naoki; Loo, Chu Kiong; Dawood, Farhan

    2018-02-01

    Adaptive Resonance Theory (ART) is one of the successful approaches to resolving "the plasticity-stability dilemma" in neural networks, and its supervised learning model called ARTMAP is a powerful tool for classification. Among several improvements, such as Fuzzy or Gaussian based models, the state of art model is Bayesian based one, while solving the drawbacks of others. However, it is known that the Bayesian approach for the high dimensional and a large number of data requires high computational cost, and the covariance matrix in likelihood becomes unstable. This paper introduces Kernel Bayesian ART (KBA) and ARTMAP (KBAM) by integrating Kernel Bayes' Rule (KBR) and Correntropy Induced Metric (CIM) to Bayesian ART (BA) and ARTMAP (BAM), respectively, while maintaining the properties of BA and BAM. The kernel frameworks in KBA and KBAM are able to avoid the curse of dimensionality. In addition, the covariance-free Bayesian computation by KBR provides the efficient and stable computational capability to KBA and KBAM. Furthermore, Correntropy-based similarity measurement allows improving the noise reduction ability even in the high dimensional space. The simulation experiments show that KBA performs an outstanding self-organizing capability than BA, and KBAM provides the superior classification ability than BAM, respectively. Copyright © 2017 Elsevier Ltd. All rights reserved.

  17. Linguistics, Computers, and the Language Teacher. A Communicative Approach.

    Science.gov (United States)

    Underwood, John H.

    This analysis of the state of the art of computer programs and programming for language teaching has two parts. In the first part, an overview of the theory and practice of language teaching, Noam Chomsky's view of language, and the implications and problems of generative theory are presented. The theory behind the input model of language…

  18. A state-of-the-art plasma polymerization coater for ICF targets

    International Nuclear Information System (INIS)

    Devine, G.; Letts, S.; Cook, R.; Brusasco, R.

    1992-01-01

    Increasingly stringent demands on the characteristics of plasma polymer coatings for use in Inertial Confinement Fusion (ICF) experiments have created a need for a plasma Polymerization coating system with the capability of producing a wide variety of different types of coatings as well as one that can be used to do fundamental investigations of the process conditions leading to desirable films. We report on the construction and use of just such a coating instrument. We have recognized the usefulness of computer assisted process monitoring and control, currently being developed by the semiconductor industry, in designing our own, State-of-the-art plasma polymerization device. Our system is fully computer interfaced to provide the user with the capability of collecting system parameter data over the length of the deposition experiment. The system is also designed to allow for any degree of computer control of the deposition process in the future

  19. Reinforced concrete beams with web openings: A state of the art review

    International Nuclear Information System (INIS)

    Ahmed, A.; Fayyadh, M.M.; Naganathan, S.; Nasharuddin, K.

    2012-01-01

    Highlights: ► Present paper highlights the gaps in the work related RC beams with web opening. ► There is limited work on comparing of design approaches of RC beams with opening. ► Strengthening with externally bonded steel or FRP sheets needs to be investigated. ► There is no repair work been done on the RC beams with opening. -- Abstract: The construction of modern buildings requires many pipes and ducts in order to accommodate essential services such as air conditioning, electricity, telephone, and computer network. Web openings in concrete beams enable the installation of these services. A number of studies have been conducted with regards to reinforced concrete beams which contain web openings. The present paper aims to compile this state of the art work on the behaviour, analysis and design of Reinforced Concrete (RC) beams with transverse web openings. A variety of aspects will be highlighted and discussed including the classification of openings, guidelines for opening location, and the structural behaviour of RC beams with web openings. Various design approaches will also be detailed, for example the American Concrete Institute (ACI) approach, the Architectural Institute of Japan (AIJ) approach and the strut and tie method. Moreover, the strengthening of RC beams with openings using Fibre Reinforced Polymer (FRP) material and steel plates is presented. Finally, directions for future research based on the gaps which exist in the present work are presented.

  20. State of the art of numerical modeling of thermohydrologic flow in fractured rock mass

    International Nuclear Information System (INIS)

    Wang, J.S.Y.; Tsang, C.F.; Sterbentz, R.A.

    1983-01-01

    The state of the art of numerical modeling of thermohydrologic flow in fractured rock masses is reviewed and a comparative study is made of several models which have been developed in nuclear waste isolation, geothermal energy, ground-water hydrology, petroleum engineering, and other geologic fields. The general review is followed by separate summaries of the main characteristics of the governing equations, numerical solutions, computer codes, validations, and applications for each model

  1. State of the art in video system performance

    Science.gov (United States)

    Lewis, Michael J.

    1990-01-01

    The closed circuit television (CCTV) system that is onboard the Space Shuttle has the following capabilities: camera, video signal switching and routing unit (VSU); and Space Shuttle video tape recorder. However, this system is inadequate for use with many experiments that require video imaging. In order to assess the state-of-the-art in video technology and data storage systems, a survey was conducted of the High Resolution, High Frame Rate Video Technology (HHVT) products. The performance of the state-of-the-art solid state cameras and image sensors, video recording systems, data transmission devices, and data storage systems versus users' requirements are shown graphically.

  2. The state-of-the-art of ART restorations.

    Science.gov (United States)

    Frencken, Jo E

    2014-04-01

    ART is less anxiety- and pain-provoking than traditional restorative treatments; administration of local anaesthesia is rarely required. Systematic reviews have provided evidence of the high level of effectiveness of high-viscosity glass-ionomer ART restoration in restoring single-surface cavities, both in primary and permanent posterior teeth, but its survival rates in restoring multiple-surface cavities in primary posterior teeth needs to be improved. Insufficient information is available regarding the survival rates of multiple-surface ART restorations in permanent teeth. Evidence from these reviews indicates no difference in the survival rates of single-surface high-viscosity glass-ionomer ART restorations and amalgam restorations in primary and permanent posterior teeth. Where indicated, high-viscosity glass-ionomer ART restorations can be used alongside traditional restorations. ART provides a much more acceptable introduction to dental restorative care than the traditional 'injection, drill and fill'.

  3. A State-of-the-Art Review of Cloud Forensics

    Directory of Open Access Journals (Sweden)

    Sameera Abdulrahman Almulla

    2014-12-01

    Full Text Available Cloud computing and digital forensics are emerging fields of technology. Unlike traditional digital forensics where the target environment can be almost completely acquired, isolated and can be under the investigators control; in cloud environments, the distribution of computation and storage poses unique and complex challenges to the investigators.Recently, the term "cloud forensics" has an increasing presence in the field of digital forensics. In this state-of-the-art review, we included the most recent research efforts that used "cloud forensics" as a keyword and then classify the literature in to three dimensions, (1 survey-based, (2 technology-based and (3 forensics procedural-based.We discuss widely accepted international standard bodies and their efforts to cope with the current trend of cloud forensics. Our aim is not only to reference related work based on the discussed dimensions, but also to analyze them and generate a mind map that will help in identifying research gaps. Finally, we summarize existing digital forensics tools and, the available simulation environments that can be used for evidence acquisition, examination and cloud forensics test purposes.

  4. Computer-Managed Instruction: State of the Art.

    Science.gov (United States)

    Bozeman, William C.

    1979-01-01

    Summarizes the findings of a report on the current status of systems of computer-managed instruction (CMI). Five systems are reviewed intensively and seventeen others are described briefly. CMI appears to offer potential as a management device but little conclusive evidence exists concerning cost-effectiveness or impact on student achievement.…

  5. Clinical Trials of Blood Pressure Lowering and Antihypertensive Medication: is Cognitive Measurement State-Of-The-Art?

    Science.gov (United States)

    Elias, Merrill F; Torres, Rachael V; Davey, Adam

    2018-02-22

    Randomized controlled trials of blood pressure (BP) lowering and antihypertensive medication use on cognitive outcomes have often been disappointing, reporting mixed findings and small effect sizes. We evaluate the extent to which cognitive assessment protocols used in these trials approach state-of-the-art. Overall, we find that a primary focus on cognition and the systematic selection of cognitive outcomes across trials take a backseat to other trial goals. Twelve trials investigating change in cognitive functioning were examined and none met criteria for state-of-the-art assessment, including use of at least 4 tests indexing 2 cognitive domains. Four trials investigating incident dementia were also examined. Each trial used state-of-the-art diagnostic criteria to assess dementia, although follow-up periods were relatively short, with only 2 trials lasting for at least 3 years. Weaknesses in each trial may act to obscure or weaken the positive effects of BP lowering on cognitive functioning. Improving trial designs in terms of cognitive outcomes selected and length of follow-up periods employed could lead to more promising findings. We offer logical steps to achieve state-of-the-art assessment protocols, with examples, in hopes of improving future trials.

  6. One Step Closer to the Marketplace for State-of-the-Art Wind Turbine

    Science.gov (United States)

    Drivetrain | News | NREL One Step Closer to the Marketplace for State-of-the-Art Wind Turbine Drivetrain One Step Closer to the Marketplace for State-of-the-Art Wind Turbine Drivetrain April 1, 2016 modeling, and testing in state-of-the-art facilities designed to put the drivetrain through its paces

  7. Clinical Policy Recommendations from the VHA State-of-the-Art Conference on Non-Pharmacological Approaches to Chronic Musculoskeletal Pain.

    Science.gov (United States)

    Kligler, Benjamin; Bair, Matthew J; Banerjea, Ranjana; DeBar, Lynn; Ezeji-Okoye, Stephen; Lisi, Anthony; Murphy, Jennifer L; Sandbrink, Friedhelm; Cherkin, Daniel C

    2018-05-01

    As a large national healthcare system, Veterans Health Administration (VHA) is ideally suited to build on its work to date and develop a safe, evidence-based, and comprehensive approach to the care of chronic musculoskeletal pain conditions that de-emphasizes opioid use and emphasizes non-pharmacological strategies. The VHA Office of Health Services Research and Development (HSR&D) held a state-of-the-art (SOTA) conference titled "Non-pharmacological Approaches to Chronic Musculoskeletal Pain Management" in November 2016. Goals of the conference were (1) to establish consensus on the current state of evidence regarding non-pharmacological approaches to chronic musculoskeletal pain to inform VHA policy in this area and (2) to begin to identify priorities for the future VHA research agenda. Workgroups were established and asked to reach consensus recommendations on clinical and research priorities for the following treatment strategies: psychological/behavioral therapies, exercise/movement therapies, manual therapies, and models for delivering multimodal pain care. Participants in the SOTA identified nine non-pharmacological therapies with sufficient evidence to be implemented across the VHA system as part of pain care. Participants further recommended that effective integration of these non-pharmacological approaches across the VHA and especially into VHA primary care, pain care, and mental health settings should be a priority, and that these treatments should be offered early in the course of pain treatment and delivered in a team-based, multimodal treatment setting concurrently with active self-care and self-management approaches. In addition, we recommend that VHA leadership and policy makers systematically address the barriers to implementation of these approaches by expanding opportunities for clinician and veteran education on the effectiveness of these strategies; supporting and funding further research to determine optimal dosage, duration, sequencing

  8. Approach to a State of the Art of Traditional and Popular Medicinal Practices in Hispano-American

    Directory of Open Access Journals (Sweden)

    Omar Alberto Garzón Chirivi

    2015-04-01

    Full Text Available DOI: http://dx.doi.org/10.17227/01234870.41folios157.168 This article presents a state of the art of academic production concerning traditional and popular medicine in Latin America. It analyzes the relation between studies on chamanismo (the art of medicine men in indigenous communities in some Spanish-speaking countries (Colombia, Peru, Bolivia, Mexico, Spain and studies on curanderismo (the art of healers in urban contexts and evidences recurring elements of a magical, religious and medical kind in their therapeutic practices. Likewise, it shows the changes in the understanding of these systems of treatment and assistance to health and sickness, their permanence and incidence on collective practices associated to spirituality, as well as the construction of alternatives of individual and social health and the interdisciplinary character of the existing research studies. This article, too, proposes the existence of an analytical vacuum regarding gender, class and ethnic group in the studies on traditional and popular medicine.

  9. Evaluation of State-of-the-Art Acoustic Feedback Cancellation Systems for Hearing Aids

    DEFF Research Database (Denmark)

    Guo, Meng; Jensen, Søren Holdt; Jensen, Jesper

    2013-01-01

    This research evaluates four state-of-the-art acoustic feedback cancellation systems in hearing aids in terms of the cancellation performance, sound quality degradation, and computational complexity. The authors compared a traditional full-band system to a system with a prediction error method...... in a full band, a subband system, a subband system with frequency shifting, and a recently proposed subband system with a novel probe noise deployment. All systems outperformed the traditional full-band system in cancellation performance, especially the subband system with probe noise is most effective...... for cancellation. However, in all cases there was a trade-off between performance and computational cost. With a 3-times increase in computation load, the probe noise based cancellation system can be realized that functions even in the most challenging feedback situation....

  10. The State of Comic Art Bibliography in North America

    Directory of Open Access Journals (Sweden)

    Michael Rhode

    2010-08-01

    Full Text Available Within the past two decades, several American bibliographies of comic art have been published to aid in research on comics and cartooning. Professor John Lent’s ten-volume Comic Art Bibliographies is one of the largest such projects and he began it with a self-published volume in 1986. Librarian Randy Scott published The Comic Art Collection Catalog: An Author, Artist, Title and Subject Catalog Of The Comic Art Collection, Special Collections Division, Michigan State University Libraries, whi...

  11. State of the art in microfabrication

    NARCIS (Netherlands)

    Schmitz, Jurriaan

    2014-01-01

    In this review paper the state of the art in microfabrication is presented. The focus is on trends in integrated circuit fabrication by mainstream industrial players. The article starts with Moore’s Law, describing its inception as well as the evolution of Moore’s metric of the number of components

  12. Computer assisted surgery in preoperative planning of acetabular fracture surgery: state of the art.

    Science.gov (United States)

    Boudissa, Mehdi; Courvoisier, Aurélien; Chabanas, Matthieu; Tonetti, Jérôme

    2018-01-01

    The development of imaging modalities and computer technology provides a new approach in acetabular surgery. Areas covered: This review describes the role of computer-assisted surgery (CAS) in understanding of the fracture patterns, in the virtual preoperative planning of the surgery and in the use of custom-made plates in acetabular fractures with or without 3D printing technologies. A Pubmed internet research of the English literature of the last 20 years was carried out about studies concerning computer-assisted surgery in acetabular fractures. The several steps for CAS in acetabular fracture surgery are presented and commented by the main author regarding to his personal experience. Expert commentary: Computer-assisted surgery in acetabular fractures is still initial experiences with promising results. Patient-specific biomechanical models considering soft tissues should be developed to allow a more realistic planning.

  13. Communicating Art through Interactive Technology: New Approaches for Interaction Design in Art Museums

    DEFF Research Database (Denmark)

    Kortbek, Karen Johanne; Grønbæk, Kaj

    2008-01-01

    This paper discusses new approaches to interaction design for communication of art in the physical museum space. In contrast to the widespread utilization of interactive tech­nologies in cultural heritage and natural science museums it is generally a challenge to introduce technology in art museums...... without disturbing the domain of the art works. To explore the possibilities of communicating art through the use of technology, and to minimize disturbance of the artworks, we apply four main approaches in the communication: 1) gentle audio augmentation of art works; 2) conceptual affinity of art works...... and remote interactive installations; 3) using the body as an interaction device; 4) consistent audio-visual cues for interaction opportunities. The paper describes the application of these approaches for communication of inspira­tional material for a Mariko Mori exhibition. The installations are described...

  14. State-of-the-art of home networking

    NARCIS (Netherlands)

    Koonen, A.M.J.; Popov, M.

    2012-01-01

    To introduce the Symposium on "Indoor Optical Networks: a Promising Way to a Converged Service Delivery", this presentation will give a brief overview of state-of-the-art home networking architectures, technologies and applications covering both technical and techno-economic aspects.

  15. New simulators from old - achieving state-of-the-art simulation without state-of-the-art costs

    International Nuclear Information System (INIS)

    Heilmeier, H.J.; Rosser, R.M.; Fyffe, K.L.; Gaerttner, G.F.; Chulick, E.T.

    1990-01-01

    Achieving a state-of-the-art simulator for operator training requires neither the expensive remodeling of old simulators nor the acquisition of very expensive new machines. In this paper the authors present two distinct cases where older training simulators have been upgraded to meet training requirements with a minimum of inexpensive hardware additions, including plug-in/-out panels, and software changes

  16. 14 CFR 1203.403 - State-of-the-art and intelligence.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 5 2010-01-01 2010-01-01 false State-of-the-art and intelligence. 1203.403... PROGRAM Guides for Original Classification § 1203.403 State-of-the-art and intelligence. A logical... available from intelligence sources is known or is available to others. It is also important to consider...

  17. How the United States Funds the Arts. Third Edition

    Science.gov (United States)

    National Endowment for the Arts, 2012

    2012-01-01

    The infrastructure for arts and cultural support in the United States is complex and adaptive. Citizens who enjoy the arts can choose from a wide array of drama, visual and media arts, dance, music, and literature available in formal and informal settings--theaters, museums, and concert halls, but also libraries, schools, places of worship,…

  18. THE ISSUE OF FORMING FUTURE MUSIC TEACHERS’ PROFESSIONAL COMPETENCE BY COMPUTER TECHNOLOGY TOOLS IN THE THEORY OF NATIONAL ART

    Directory of Open Access Journals (Sweden)

    Lyudmila Gavrilova

    2017-04-01

    Full Text Available The article deals with theoretical aspects of forming future music teachers’ professional competence by computer technology tools. The concept of professional competence has become a major criterion of preparing students for professional activities. The issue of the article is relevant as the competence approach has become a basis of implementing computer technologies into future music teachers’ training. The authors give a detailed analysis of implementing computer technologies into musical education. The special attention is paid to using a computer in musical education and making electronic pedagogical resources. The aim of the article is to outline the directions of national art research in the process of implementing computer tools that is one of the most efficient ways of updating process of future music teachers’ training. The article reveals theoretical aspects of forming future music teachers’ professional competence by computer technology tools. The authors point out that implementing musical and computer technologies into music art practice is realized in some directions: using a computer as a new musical instrument in composers, sound engineers, and arrangers’ activities; using a computer for studying the quality of music sound, analysing sounds and music compositions, spectral analysis of acoustic characteristics of singers’ voice; studying ancient music manuscripts due to digital technology; developing hardware and software for music education. A distinct direction of research is the pedagogical aspect of using a computer in music education (music and the use of special software for recording and editing music, the use of multimedia to enhance visibility in education, development of e-learning resources, etc.. The authors conclude that implementing computer technologies into future music teachers’ training makes this process more efficient. In the authors’ opinion the widespread introduction of distance learning

  19. Platelet kinetics: the state of the art

    International Nuclear Information System (INIS)

    Heyns, A. duP

    1984-01-01

    In this paper an overview of the state of the art of platelet kinetics 1982 is presented. The subjects considered include a discussion of the advantages and disadvantages of some of the many radionuclide platelet labels, viz 51 Cr, 111 In, focussing briefly on models for analysis of platelets survival. (Auth.)

  20. State of the art/science: Visual methods and information behavior research

    DEFF Research Database (Denmark)

    Hartel, Jenna; Sonnenwald, Diane H.; Lundh, Anna

    2012-01-01

    This panel reports on methodological innovation now underway as information behavior scholars begin to experiment with visual methods. The session launches with a succinct introduction to visual methods by Jenna Hartel and then showcases three exemplar visual research designs. First, Dianne Sonne...... will have gained: knowledge of the state of the art/science of visual methods in information behavior research; an appreciation for the richness the approach brings to the specialty; and a platform to take new visual research designs forward....

  1. Deep Learning for Brain MRI Segmentation: State of the Art and Future Directions.

    Science.gov (United States)

    Akkus, Zeynettin; Galimzianova, Alfiia; Hoogi, Assaf; Rubin, Daniel L; Erickson, Bradley J

    2017-08-01

    Quantitative analysis of brain MRI is routine for many neurological diseases and conditions and relies on accurate segmentation of structures of interest. Deep learning-based segmentation approaches for brain MRI are gaining interest due to their self-learning and generalization ability over large amounts of data. As the deep learning architectures are becoming more mature, they gradually outperform previous state-of-the-art classical machine learning algorithms. This review aims to provide an overview of current deep learning-based segmentation approaches for quantitative brain MRI. First we review the current deep learning architectures used for segmentation of anatomical brain structures and brain lesions. Next, the performance, speed, and properties of deep learning approaches are summarized and discussed. Finally, we provide a critical assessment of the current state and identify likely future developments and trends.

  2. The Arts and State Governments: At Arm's Length or Arm in Arm?

    Science.gov (United States)

    Lowell, Julia F.; Ondaatje, Elizabeth Heneghan

    2006-01-01

    Even though a majority of Americans claim to support public funding of the arts, state government spending on the arts is minimal--and may be losing ground relative to other types of state expenditures. Moreover, most state arts agencies, or SAAs, have not succeeded in convincing state government leaders that the arts should be integral to their…

  3. 77 FR 5281 - State-of-the-Art Reactor Consequence Analyses Reports

    Science.gov (United States)

    2012-02-02

    ... NUCLEAR REGULATORY COMMISSION [Docket ID: NRC-2012-0022] State-of-the-Art Reactor Consequence... release of Draft NUREG-1935, ``State-of-the-Art Reactor Consequence Analyses (SOARCA) Report,'' for public... offsite radiological health consequences for potential severe reactor accidents for the Peach Bottom...

  4. Preliminary power train design for a state-of-the-art electric vehicle

    Science.gov (United States)

    Ross, J. A.; Wooldridge, G. A.

    1978-01-01

    The state-of-the-art (SOTA) of electric vehicles built since 1965 was reviewed to establish a base for the preliminary design of a power train for a SOTA electric vehicle. The performance of existing electric vehicles were evaluated to establish preliminary specifications for a power train design using state-of-the-art technology and commercially available components. Power train components were evaluated and selected using a computer simulation of the SAE J227a Schedule D driving cycle. Predicted range was determined for a number of motor and controller combinations in conjunction with the mechanical elements of power trains and a battery pack of sixteen lead-acid batteries - 471.7 kg at 0.093 MJ/Kg (1040 lbs. at 11.7 Whr/lb). On the basis of maximum range and overall system efficiency using the Schedule D cycle, an induction motor and 3 phase inverter/controller was selected as the optimum combination when used with a two-speed transaxle and steel belted radial tires. The predicted Schedule D range is 90.4 km (56.2 mi). Four near term improvements to the SOTA were identified, evaluated, and predicted to increase range approximately 7%.

  5. Conformation Generation: The State of the Art.

    Science.gov (United States)

    Hawkins, Paul C D

    2017-08-28

    The generation of conformations for small molecules is a problem of continuing interest in cheminformatics and computational drug discovery. This review will present an overview of methods used to sample conformational space, focusing on those methods designed for organic molecules commonly of interest in drug discovery. Different approaches to both the sampling of conformational space and the scoring of conformational stability will be compared and contrasted, with an emphasis on those methods suitable for conformer sampling of large numbers of drug-like molecules. Particular attention will be devoted to the appropriate utilization of information from experimental solid-state structures in validating and evaluating the performance of these tools. The review will conclude with some areas worthy of further investigation.

  6. A state-of-the-art review of recent advances in supercritical natural circulation loops for nuclear applications

    International Nuclear Information System (INIS)

    Sarkar, Milan K.S.; Tilak, Abhilash K.; Basu, Dipankar N.

    2014-01-01

    Highlights: • Review of state-of-the-art on supercritical natural circulation loops. • Summarization of steady-state thermalhydraulic behavior for nuclear applications. • Survey of non-linear and linear stability analyses and parametric effects. • Details of experimental investigations and critical findings form each. • Emphasis on need of further experimentation in future. - Abstract: The concept of supercritical natural circulation loop (SCNCL) is an important inclusion in Generation-IV nuclear reactors. Use of supercritical fluids promises a simplified design, along with higher thermal efficiency for heat transport systems. Characteristics of such loops are markedly different from its single-phase and two-phase counterparts, while carrying quite a few similarities with both as well. Therefore significant number of research studies is carried out on SCNCL in the present millennium and current work presents a state-of-the-art summary of all associated observations. Most of the reported studies are theoretical in nature, with only a limited number of experimental works being reported. A number of indigenous computation codes were developed, while use of commercial software can also be found. Thermal–hydraulic and heat transfer aspects are discussed in details, showing the gradual growth of knowledge and comprehending the influence of various geometric and operating variables on steady-state profile. Water and carbon dioxide are identified as the only fluids considered for analysis both numerically and experimentally. Both time-domain and frequency-domain approach of stability analysis are discussed meticulously. Available experimental works are described, with exhaustive discussion on the novelty of the concerned facility and major observations. Finally a few topics are ear-marked as the possible guidelines for future research

  7. State Arts Policy: Trends and Future Prospects

    Science.gov (United States)

    Lowell, Julia F.

    2008-01-01

    State arts agencies (SAAs)--key players within the U.S. system of public support for the arts--face growing economic, political, and demographic challenges to the roles and missions they adopted when founded in the mid-1960s. This report, the fourth and final in a multiyear study, looks at state arts agencies' efforts to rethink their roles and…

  8. Digital radiography of the chest: state of the art

    International Nuclear Information System (INIS)

    Souto, M.; Malagari, K.S.; Tucker, D.; Tahoces, P.G.; Correa, J.; Benakis, V.S.; Roussos, C.; Strigaris, K.A.; Vidal, J.J.; Barnes, G.T.; Fraser, R.G.

    1994-01-01

    Digital image acquisition possesses a number of advantages over conventional systems in radiographic examination of the chest, the most important of which is its greater dynamic range. In addition, once digital images are acquired, they can be processed by computer in ways that cannot be rivalled by conventional analog techniques. Finally, digital images can be stored, retrieved and transmitted to local or remote sites. Here the status of the different digital systems employed in chest radiology and commonly used image processing techniques are reviewed. Also discussed are the current clinical applications of integrating digital chest radiography with a picture archiving and communication system (PACS) along with the difficulties typically encountered. Studies with a variety of digital techniques have been carried out on several fronts. Computed radiography based on photostimulable phosphor (CR) has replaced screen-film imaging in certain applications (i.e. bedside imaging). However, CR has limitations, namely its poor X-ray utilisation efficiency at high X-ray tube voltages and sensitivity to scatter; therefore, it is not ideal for all applications. Recently, a dedicated digital chest unit with excellent X-ray utilisation efficiency at high X-ray tube potentials has been introduced. On the basis of the state-of-the-art capabilities and research during the past decade, recommendations are made regarding the most desirable equipment specifications for dedicated and bedside digital chest radiography. (orig.)

  9. Touch-based Brain Computer Interfaces: State of the art

    NARCIS (Netherlands)

    Erp, J.B.F. van; Brouwer, A.M.

    2014-01-01

    Brain Computer Interfaces (BCIs) rely on the user's brain activity to control equipment or computer devices. Many BCIs are based on imagined movement (called active BCIs) or the fact that brain patterns differ in reaction to relevant or attended stimuli in comparison to irrelevant or unattended

  10. Cost management of IT beyond cost of ownership models : a state of the art overview of the Dutch financial services industry

    NARCIS (Netherlands)

    van Maanen, H.; Berghout, E.W.

    Controlling costs is an essential part of a value driven information technology (IT) management. This paper gives a state of the art overview of IT cost management practice. Both theoretical and an empirical approach are taken. The theoretical approach is based on both general accounting literature

  11. An Overview of the State of the Art in Atomistic and Multiscale Simulation of Fracture

    Science.gov (United States)

    Saether, Erik; Yamakov, Vesselin; Phillips, Dawn R.; Glaessgen, Edward H.

    2009-01-01

    The emerging field of nanomechanics is providing a new focus in the study of the mechanics of materials, particularly in simulating fundamental atomic mechanisms involved in the initiation and evolution of damage. Simulating fundamental material processes using first principles in physics strongly motivates the formulation of computational multiscale methods to link macroscopic failure to the underlying atomic processes from which all material behavior originates. This report gives an overview of the state of the art in applying concurrent and sequential multiscale methods to analyze damage and failure mechanisms across length scales.

  12. Digital multicolor printing: state of the art and future challenges

    Science.gov (United States)

    Kipphan, Helmut

    1995-04-01

    During the last 5 years, digital techniques have become extremely important in the graphic arts industry. All sections in the production flow for producing multicolor printed products - prepress, printing and postpress - are influenced by digitalization, in an evolutionary and revolutionary way. New equipment and network techniques bring all the sections closer together. The focus is put on high-quality multicolor printing, together with high productivity. Conventional offset printing technology is compared with the leading nonimpact printing technologies. Computer to press is contrasted with computer to print techniques. The newest available digital multicolor presses are described - the direct imaging offset printing press from HEIDELBERG with new laser imaging technique as well as the INDIGO and XEIKON presses based on electrophotography. Regarding technical specifications, economic calculations and print quality, it is worked out that each technique has its own market segments. An outlook is given for future computer to press techniques and the potential of nonimpact printing technologies for advanced high-speed multicolor computer to print equipment. Synergy effects from the NIP-technologies to the conventional printing technologies and vice versa are possible for building up innovative new products, for example hybrid printing systems. It is also shown that there is potential for improving the print quality, based on special screening algorithms, and a higher number of grey levels per pixel by using NIP-technologies. As an intermediate step in digitalization of the production flow, but also as an economical solution computer to plate equipment is described. By producing printed products totally in a digital way, digital color proofing as well as color management systems are needed. The newest high-tech equipment using NIP-technologies for producing proofs is explained. All in all it is shown that the state of the art in digital multicolor printing has reached

  13. Natural language processing: state of the art and prospects for significant progress, a workshop sponsored by the National Library of Medicine.

    Science.gov (United States)

    Friedman, Carol; Rindflesch, Thomas C; Corn, Milton

    2013-10-01

    Natural language processing (NLP) is crucial for advancing healthcare because it is needed to transform relevant information locked in text into structured data that can be used by computer processes aimed at improving patient care and advancing medicine. In light of the importance of NLP to health, the National Library of Medicine (NLM) recently sponsored a workshop to review the state of the art in NLP focusing on text in English, both in biomedicine and in the general language domain. Specific goals of the NLM-sponsored workshop were to identify the current state of the art, grand challenges and specific roadblocks, and to identify effective use and best practices. This paper reports on the main outcomes of the workshop, including an overview of the state of the art, strategies for advancing the field, and obstacles that need to be addressed, resulting in recommendations for a research agenda intended to advance the field. Copyright © 2013 The Authors. Published by Elsevier Inc. All rights reserved.

  14. State of art in FE-based fuel performance codes

    International Nuclear Information System (INIS)

    Kim, Hyo Chan; Yang, Yong Sik; Kim, Dae Ho; Bang, Je Geon; Kim, Sun Ki; Koo, Yang Hyun

    2013-01-01

    Fuel performance codes approximate this complex behavior using an axisymmetric, axially-stacked, one-dimensional radial representation to save computation cost. However, the need for improved modeling of PCMI and, particularly, the importance of multidimensional capability for accurate fuel performance simulation has been identified as safety margin decreases. Finite element (FE) method that is reliable and proven solution in mechanical field has been introduced into fuel performance codes for multidimensional analysis. The present state of the art in numerical simulation of FE-based fuel performance predominantly involves 2-D axisymmetric model and 3-D volumetric model. The FRAPCON and FRAPTRAN own 1.5-D and 2-D FE model to simulate PCMI and cladding ballooning. In 2-D simulation, the FALCON code, developed by EPRI, is a 2-D (R-Z and R-θ) fully thermal-mechanically coupled steady-state and transient FE-based fuel behavior code. The French codes TOUTATIS and ALCYONE which are 3-D, and typically used to investigate localized behavior. In 2008, the Idaho National Laboratory (INL) has been developing multidimensional (2-D and 3-D) nuclear fuel performance code called BISON. In this paper, the current state of FE-based fuel performance code and their models are presented. Based on investigation into the codes, requirements and direction of development for new FE-based fuel performance code can be discussed. Based on comparison of models in FE-based fuel performance code, status of art in the codes can be discussed. A new FE-based fuel performance code should include typical pellet and cladding models which all codes own. In particular, specified pellet and cladding model such as gaseous swelling and high burnup structure (HBS) model should be developed to improve accuracy of code as well as consider AC condition. To reduce computation cost, the approximated gap and the optimized contact model should be also developed

  15. Contemporary Romanian Art in the United States1

    Directory of Open Access Journals (Sweden)

    Altman Dana

    2014-08-01

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

  16. State-of-the-Art Report on Multi-scale Modelling of Nuclear Fuels

    International Nuclear Information System (INIS)

    Bartel, T.J.; Dingreville, R.; Littlewood, D.; Tikare, V.; Bertolus, M.; Blanc, V.; Bouineau, V.; Carlot, G.; Desgranges, C.; Dorado, B.; Dumas, J.C.; Freyss, M.; Garcia, P.; Gatt, J.M.; Gueneau, C.; Julien, J.; Maillard, S.; Martin, G.; Masson, R.; Michel, B.; Piron, J.P.; Sabathier, C.; Skorek, R.; Toffolon, C.; Valot, C.; Van Brutzel, L.; Besmann, Theodore M.; Chernatynskiy, A.; Clarno, K.; Gorti, S.B.; Radhakrishnan, B.; Devanathan, R.; Dumont, M.; Maugis, P.; El-Azab, A.; Iglesias, F.C.; Lewis, B.J.; Krack, M.; Yun, Y.; Kurata, M.; Kurosaki, K.; Largenton, R.; Lebensohn, R.A.; Malerba, L.; Oh, J.Y.; Phillpot, S.R.; Tulenko, J. S.; Rachid, J.; Stan, M.; Sundman, B.; Tonks, M.R.; Williamson, R.; Van Uffelen, P.; Welland, M.J.; Valot, Carole; Stan, Marius; Massara, Simone; Tarsi, Reka

    2015-10-01

    The Nuclear Science Committee (NSC) of the Nuclear Energy Agency (NEA) has undertaken an ambitious programme to document state-of-the-art of modelling for nuclear fuels and structural materials. The project is being performed under the Working Party on Multi-Scale Modelling of Fuels and Structural Material for Nuclear Systems (WPMM), which has been established to assess the scientific and engineering aspects of fuels and structural materials, describing multi-scale models and simulations as validated predictive tools for the design of nuclear systems, fuel fabrication and performance. The WPMM's objective is to promote the exchange of information on models and simulations of nuclear materials, theoretical and computational methods, experimental validation and related topics. It also provides member countries with up-to-date information, shared data, models, and expertise. The goal is also to assess needs for improvement and address them by initiating joint efforts. The WPMM reviews and evaluates multi-scale modelling and simulation techniques currently employed in the selection of materials used in nuclear systems. It serves to provide advice to the nuclear community on the developments needed to meet the requirements of modelling for the design of different nuclear systems. The original WPMM mandate had three components (Figure 1), with the first component currently completed, delivering a report on the state-of-the-art of modelling of structural materials. The work on modelling was performed by three expert groups, one each on Multi-Scale Modelling Methods (M3), Multi-Scale Modelling of Fuels (M2F) and Structural Materials Modelling (SMM). WPMM is now composed of three expert groups and two task forces providing contributions on multi-scale methods, modelling of fuels and modelling of structural materials. This structure will be retained, with the addition of task forces as new topics are developed. The mandate of the Expert Group on Multi-Scale Modelling of

  17. Software engineering frameworks for the cloud computing paradigm

    CERN Document Server

    Mahmood, Zaigham

    2013-01-01

    This book presents the latest research on Software Engineering Frameworks for the Cloud Computing Paradigm, drawn from an international selection of researchers and practitioners. The book offers both a discussion of relevant software engineering approaches and practical guidance on enterprise-wide software deployment in the cloud environment, together with real-world case studies. Features: presents the state of the art in software engineering approaches for developing cloud-suitable applications; discusses the impact of the cloud computing paradigm on software engineering; offers guidance an

  18. State of the Art of Network Security Perspectives in Cloud Computing

    Science.gov (United States)

    Oh, Tae Hwan; Lim, Shinyoung; Choi, Young B.; Park, Kwang-Roh; Lee, Heejo; Choi, Hyunsang

    Cloud computing is now regarded as one of social phenomenon that satisfy customers' needs. It is possible that the customers' needs and the primary principle of economy - gain maximum benefits from minimum investment - reflects realization of cloud computing. We are living in the connected society with flood of information and without connected computers to the Internet, our activities and work of daily living will be impossible. Cloud computing is able to provide customers with custom-tailored features of application software and user's environment based on the customer's needs by adopting on-demand outsourcing of computing resources through the Internet. It also provides cloud computing users with high-end computing power and expensive application software package, and accordingly the users will access their data and the application software where they are located at the remote system. As the cloud computing system is connected to the Internet, network security issues of cloud computing are considered as mandatory prior to real world service. In this paper, survey and issues on the network security in cloud computing are discussed from the perspective of real world service environments.

  19. Communication: An efficient approach to compute state-specific nuclear gradients for a generic state-averaged multi-configuration self consistent field wavefunction

    Energy Technology Data Exchange (ETDEWEB)

    Granovsky, Alexander A., E-mail: alex.granovsky@gmail.com [Firefly project, Moscow, 117593 Moscow (Russian Federation)

    2015-12-21

    We present a new, very efficient semi-numerical approach for the computation of state-specific nuclear gradients of a generic state-averaged multi-configuration self consistent field wavefunction. Our approach eliminates the costly coupled-perturbed multi-configuration Hartree-Fock step as well as the associated integral transformation stage. The details of the implementation within the Firefly quantum chemistry package are discussed and several sample applications are given. The new approach is routinely applicable to geometry optimization of molecular systems with 1000+ basis functions using a standalone multi-core workstation.

  20. Communication: An efficient approach to compute state-specific nuclear gradients for a generic state-averaged multi-configuration self consistent field wavefunction

    International Nuclear Information System (INIS)

    Granovsky, Alexander A.

    2015-01-01

    We present a new, very efficient semi-numerical approach for the computation of state-specific nuclear gradients of a generic state-averaged multi-configuration self consistent field wavefunction. Our approach eliminates the costly coupled-perturbed multi-configuration Hartree-Fock step as well as the associated integral transformation stage. The details of the implementation within the Firefly quantum chemistry package are discussed and several sample applications are given. The new approach is routinely applicable to geometry optimization of molecular systems with 1000+ basis functions using a standalone multi-core workstation

  1. Communication: An efficient approach to compute state-specific nuclear gradients for a generic state-averaged multi-configuration self consistent field wavefunction.

    Science.gov (United States)

    Granovsky, Alexander A

    2015-12-21

    We present a new, very efficient semi-numerical approach for the computation of state-specific nuclear gradients of a generic state-averaged multi-configuration self consistent field wavefunction. Our approach eliminates the costly coupled-perturbed multi-configuration Hartree-Fock step as well as the associated integral transformation stage. The details of the implementation within the Firefly quantum chemistry package are discussed and several sample applications are given. The new approach is routinely applicable to geometry optimization of molecular systems with 1000+ basis functions using a standalone multi-core workstation.

  2. Mission Accomplished: Working with State Arts Agencies

    Science.gov (United States)

    Boyer, Johanna Misey

    2005-01-01

    Most everyone involved professionally in the non-profit arts comes in contact with a state arts agency. A person may be on the Teaching Artist roster, works for a grantee organization, or has directly received a grant or fellowship. The work that one does in the school is probably funded by the state arts agency. Or, at a more basic level, the…

  3. State-of-the-art technology for an extended computing centre

    CERN Multimedia

    Anaïs Schaeffer

    2013-01-01

    On 7 May, CERN’s Director-General, Rolf Heuer, the Director for Research and Computing, Sergio Bertolucci, the EN Department Head, Roberto Saban, and several guests joined the IT Department Head, Frédéric Hemmer, for the inauguration of the new facilities at the CERN Computing Centre.   One of the new ventilation units and a big duct, installed as part of the Computing Centre consolidation project. After nearly two years of work, the IT Department now boasts a new computer room, equipped with its own cooling system to house the Computing Centre’s critical IT systems, which can, from now on, be decoupled from the other systems in the building. New electrical facilities have been added too, boosting the Centre’s computing power from 2.9 to 3.5 MW. Finally, an additional 40 cubic-metre water tank has been installed to allow continued cooling of the IT systems in the event of a major incident. But the star attraction of the extension project has ...

  4. COMPUTER ASSISTED LOOM IN THE REVIVAL OF CONTEMPORARY MONUMENTAL TAPESTRY

    Directory of Open Access Journals (Sweden)

    PINTILIE Anca-Aurelia

    2015-05-01

    Full Text Available The art of tapestry has its basics back in time, probably in the decorations of tent, the house of the nomad. Tapestry in its beginnings is the first wall of the nomad’s home and the decorative wall and canopy in the ancient Greek houses as architect Gottfried Semper stated in the nineteen century. The architectural approach is not unusual even in the next centuries. Tapestry becomes popular as a form of monumental art during the Middle Ages when it is used as decorative architectural element, coating the walls of medieval castles. During the next centuries dominated by decadent styles of baroque, rococo, the tapestry will lose its monumental spirit and architectural quality but at the middle of the XXth century a new approach will sustain the revival of the tapestry as monumental art. Later, in the XXIst century, renowned multimedia artists will approach this medium and will use computer assisted looms in ambitious tapestry projects. This technique will allow them to realize complex and exquisite tapestries, sustaining in this way the revival of the tapestry in the contemporary art world. The paper presents the importance of the architectural side of tapestry and the great achievement that computer assisted loom represents for this form of art. The research activity is willing to inform Romanian textile designers about the possibilities to create tapestries on computer assisted looms. The research was made during the initial stage of a doctoral thesis consisting in a documentary study on monumental aspects of contemporary tapestry.

  5. State-of-the-Art Prescriptive Criteria Weight Elicitation

    Directory of Open Access Journals (Sweden)

    Mona Riabacke

    2012-01-01

    Full Text Available Comparatively few of the vast amounts of decision analytical methods suggested have been widely spread in actual practice. Some approaches have nevertheless been more successful in this respect than others. Quantitative decision making has moved from the study of decision theory founded on a single criterion towards decision support for more realistic decision-making situations with multiple, often conflicting, criteria. Furthermore, the identified gap between normative and descriptive theories seems to suggest a shift to more prescriptive approaches. However, when decision analysis applications are used to aid prescriptive decision-making processes, additional demands are put on these applications to adapt to the users and the context. In particular, the issue of weight elicitation is crucial. There are several techniques for deriving criteria weights from preference statements. This is a cognitively demanding task, subject to different biases, and the elicited values can be heavily dependent on the method of assessment. There have been a number of methods suggested for assessing criteria weights, but these methods have properties which impact their applicability in practice. This paper provides a survey of state-of-the-art weight elicitation methods in a prescriptive setting.

  6. The development of a classification schema for arts-based approaches to knowledge translation.

    Science.gov (United States)

    Archibald, Mandy M; Caine, Vera; Scott, Shannon D

    2014-10-01

    Arts-based approaches to knowledge translation are emerging as powerful interprofessional strategies with potential to facilitate evidence uptake, communication, knowledge, attitude, and behavior change across healthcare provider and consumer groups. These strategies are in the early stages of development. To date, no classification system for arts-based knowledge translation exists, which limits development and understandings of effectiveness in evidence syntheses. We developed a classification schema of arts-based knowledge translation strategies based on two mechanisms by which these approaches function: (a) the degree of precision in key message delivery, and (b) the degree of end-user participation. We demonstrate how this classification is necessary to explore how context, time, and location shape arts-based knowledge translation strategies. Classifying arts-based knowledge translation strategies according to their core attributes extends understandings of the appropriateness of these approaches for various healthcare settings and provider groups. The classification schema developed may enhance understanding of how, where, and for whom arts-based knowledge translation approaches are effective, and enable theorizing of essential knowledge translation constructs, such as the influence of context, time, and location on utilization strategies. The classification schema developed may encourage systematic inquiry into the effectiveness of these approaches in diverse interprofessional contexts. © 2014 Sigma Theta Tau International.

  7. Improving Student Perceptions of Science through the Use of State-of-the-Art Instrumentation in General Chemistry Laboratory

    Science.gov (United States)

    Aurentz, David J.; Kerns, Stefanie L.; Shibley, Lisa R.

    2011-01-01

    Access to state-of-the-art instrumentation, namely nuclear magnetic resonance (NMR) spectroscopy, early in the college curriculum was provided to undergraduate students in an effort to improve student perceptions of science. Proton NMR spectroscopy was introduced as part of an aspirin synthesis in a guided-inquiry approach to spectral…

  8. For What Purpose the Arts? An Analysis of the Mission Statements of Urban Arts High Schools in Canada and the United States

    Science.gov (United States)

    Gaztambide-Fernández, Rubén; Nicholls, Rachael; Arráiz-Matute, Alexandra

    2016-01-01

    While general arts programs have declined in many schools across the United States and Canada, the number of specialized art programs in public secondary schools has swelled since the 1980s. While this increase is often celebrated by arts educators, questions about the justification of specialized arts programs are rarely raised, and their value…

  9. Status of computational fluid dynamics in the United States

    International Nuclear Information System (INIS)

    Kutler, P.; Steger, J.L.; Bailey, F.R.

    1987-01-01

    CFD-related progress in U.S. aerospace industries and research institutions is evaluated with respect to methods employed, their applications, and the computer technologies employed in their implementation. Goals for subsonic CFD are primarily aimed at greater fuel efficiency; those of supersonic CFD involve the achievement of high sustained cruise efficiency. Transatmospheric/hypersonic vehicles are noted to have recently become important concerns for CFD efforts. Attention is given to aspects of discretization, Euler and Navier-Stokes general purpose codes, zonal equation methods, internal and external flows, and the impact of supercomputers and their networks in advancing the state-of-the-art. 91 references

  10. State of the art of parallel scientific visualization applications on PC clusters

    International Nuclear Information System (INIS)

    Juliachs, M.

    2004-01-01

    In this state of the art on parallel scientific visualization applications on PC clusters, we deal with both surface and volume rendering approaches. We first analyze available PC cluster configurations and existing parallel rendering software components for parallel graphics rendering. CEA/DIF has been studying cluster visualization since 2001. This report is part of a study to set up a new visualization research platform. This platform consisting of an eight-node PC cluster under Linux and a tiled display was installed in collaboration with Versailles-Saint-Quentin University in August 2003. (author)

  11. Three Approaches to Teaching Art Methods Courses: Child Art, Visual Culture, and Issues-Based Art Education

    Science.gov (United States)

    Chang, EunJung; Lim, Maria; Kim, Minam

    2012-01-01

    In this article, three art educators reflect on their ideas and experiences in developing and implementing innovative projects for their courses focusing on art for elementary education majors. They explore three different approaches. The three areas that are discussed in depth include: (1) understanding child art; (2) visual culture; and (3)…

  12. In-vessel core debris retention through external flooding of the reactor pressure vessel. State-of-the-art report

    Energy Technology Data Exchange (ETDEWEB)

    Heel, A.M.J.M. van

    1995-07-01

    An overview of the state-of-the-art knowledge on the ex-vessel flooding accident management strategy for severe accidents in a NPP has been given. The feasibility has been discussed, as well as the in- and ex-vessel phenomena, which influence the structural integrity of the vessel. Finally, some computer codes with the ability to model the phenomena involved in ex-vessel flooding have been discussed. (orig./HP).

  13. In-vessel core debris retention through external flooding of the reactor pressure vessel. State-of-the-art report

    International Nuclear Information System (INIS)

    Heel, A.M.J.M. van.

    1995-07-01

    An overview of the state-of-the-art knowledge on the ex-vessel flooding accident management strategy for severe accidents in a NPP has been given. The feasibility has been discussed, as well as the in- and ex-vessel phenomena, which influence the structural integrity of the vessel. Finally, some computer codes with the ability to model the phenomena involved in ex-vessel flooding have been discussed. (orig./HP)

  14. State of the social responsibility art

    OpenAIRE

    Varela López, Leidy Viviana; Universidad de San Buenaventura Cali.

    2015-01-01

    From the eighties, it has been addressing the issue of corporate social responsibility, specifically toward the defense of human rights and climate change. However, although they have applied corporate social responsibility principles in some of the existing institutions, it is still very small the work being done around the specific activity of solid waste management. Some works have been compiled to build a state of the art for understanding in depth the concept of corporate social responsi...

  15. Subliminal Priming—State of the Art and Future Perspectives

    Directory of Open Access Journals (Sweden)

    Mohamed Elgendi

    2018-05-01

    Full Text Available The influence of subliminal priming (behavior outside of awareness in humans is an interesting phenomenon and its understanding is crucial as it can impact behavior, choices, and actions. Given this, research about the impact of priming continues to be an area of investigative interest, and this paper provides a technical overview of research design strengths and issues in subliminal priming research. Efficient experiments and protocols, as well as associated electroencephalographic and eye movement data analyses, are discussed in detail. We highlight the strengths and weaknesses of different priming experiments that have measured affective (emotional and cognitive responses. Finally, very recent approaches and findings are described to summarize and emphasize state-of-the-art methods and potential future directions in research marketing and other commercial applications.

  16. A State of the Art Overview

    DEFF Research Database (Denmark)

    Jahangiri, Tohid; Bak, Claus Leth; Silva, Filipe Miguel Faria da

    2015-01-01

    The first EHV composite cross-arms have been used since late 1990's in Switzerland. It was the first step to the compaction of towers sizes. Since then, significant advances have been made in composite cross-arms technology while the lattice construction technique has not been seriously challenged...... of EHV composite cross-arms and lightning protection methods are reviewed based on the state of the art review and subsequently some solutions are presented to overcome the two main challenges....

  17. The value of art-oriented pedagogical approaches to the teaching of optics and photonics

    Science.gov (United States)

    Pompea, Stephen M.; Regens, Nancy L.

    2017-08-01

    Art-oriented pedagogical approaches have been successfully applied to optics and photonics education. We will describe how art-based programs that incorporate a Visual Thinking Strategies (VTS) approach can be used by optics and photonics educators. VTS encourages both a deep appreciation of the content of optics images and phenomena and a highly participatory approach to understanding them. This type of approach has been used by the authors in a variety of educational settings including teacher professional development workshops, museum and science center-based programs, after school programs and in two-week intensive summer academies for students. These approaches work well with multiple age groups including primary and secondary grade students, university students, and adults who may have little apparent connection to optics and photonics. This art-science hybrid approach can be used by university professors, optics/photonics professionals who do public programs, museum educators, and classroom science teachers.

  18. Meniscal Allograft Transplantation: State of the Art.

    Science.gov (United States)

    Trentacosta, Natasha; Graham, William C; Gersoff, Wayne K

    2016-06-01

    Meniscal allograft transplantation has evolved over the years to provide a state-of-the-art technique for the sports medicine surgeon to utilize in preserving contact mechanics and function of the knee in irreparable meniscal pathology. However, this procedure continues to spark considerable debate on proper tissue processing techniques, acceptable indications, methods of implantation, and potential long-term outcomes.

  19. STATE-OF-THE-ART TASKS AND ACHIEVEMENTS OF PARALINGUISTIC SPEECH ANALYSIS SYSTEMS

    Directory of Open Access Journals (Sweden)

    A. A. Karpov

    2016-07-01

    Full Text Available We present analytical survey of state-of-the-art actual tasks in the area of computational paralinguistics, as well as the recent achievements of automatic systems for paralinguistic analysis of conversational speech. Paralinguistics studies non-verbal aspects of human communication and speech such as: natural emotions, accents, psycho-physiological states, pronunciation features, speaker’s voice parameters, etc. We describe architecture of a baseline computer system for acoustical paralinguistic analysis, its main components and useful speech processing methods. We present some information on an International contest called Computational Paralinguistics Challenge (ComParE, which is held each year since 2009 in the framework of the International conference INTERSPEECH organized by the International Speech Communication Association. We present sub-challenges (tasks that were proposed at the ComParE Challenges in 2009-2016, and analyze winning computer systems for each sub-challenge and obtained results. The last completed ComParE-2015 Challenge was organized in September 2015 in Germany and proposed 3 sub-challenges: 1 Degree of Nativeness (DN sub-challenge, determination of nativeness degree of speakers based on acoustics; 2 Parkinson's Condition (PC sub-challenge, recognition of a degree of Parkinson’s condition based on speech analysis; 3 Eating Condition (EC sub-challenge, determination of the eating condition state during speaking or a dialogue, and classification of consumed food type (one of seven classes of food by the speaker. In the last sub-challenge (EC, the winner was a joint Turkish-Russian team consisting of the authors of the given paper. We have developed the most efficient computer-based system for detection and classification of the corresponding (EC acoustical paralinguistic events. The paper deals with the architecture of this system, its main modules and methods, as well as the description of used training and evaluation

  20. Lessons learned about art-based approaches for disseminating knowledge.

    Science.gov (United States)

    Bruce, Anne; Makaroff, Kara L Schick; Sheilds, Laurene; Beuthin, Rosanne; Molzahn, Anita; Shermak, Sheryl

    2013-01-01

    To present a case example of using an arts-based approach and the development of an art exhibit to disseminate research findings from a narrative research study. Once a study has been completed, the final step of dissemination of findings is crucial. In this paper, we explore the benefits of bringing nursing research into public spaces using an arts-based approach. Findings from a qualitative narrative study exploring experiences of living with life-threatening illnesses. Semi-structured in-depth interviews were conducted with 32 participants living with cancer, chronic renal disease, or HIV/AIDS. Participants were invited to share a symbol representing their experience of living with life-threatening illness and the meaning it held for them. The exhibit conveyed experiences of how people story and re-story their lives when living with chronic kidney disease, cancer or HIV. Photographic images of symbolic representations of study participants' experiences and poetic narratives from their stories were exhibited in a public art gallery. The theoretical underpinning of arts-based approaches and the lessons learned in creating an art exhibit from research findings are explored. Creative art forms for research and disseminating knowledge offer new ways of understanding and knowing that are under-used in nursing. Arts-based approaches make visible patients' experiences that are often left unarticulated or hidden. Creative dissemination approaches such as art exhibits can promote insight and new ways of knowing that communicate nursing research to both public and professional audiences.

  1. The Art of Software Testing

    CERN Document Server

    Myers, Glenford J; Badgett, Tom

    2011-01-01

    The classic, landmark work on software testing The hardware and software of computing have changed markedly in the three decades since the first edition of The Art of Software Testing, but this book's powerful underlying analysis has stood the test of time. Whereas most books on software testing target particular development techniques, languages, or testing methods, The Art of Software Testing, Third Edition provides a brief but powerful and comprehensive presentation of time-proven software testing approaches. If your software development project is mission critical, this book is an investme

  2. State-of-the-art and needs for jet instability and direct contact condensation model improvements

    International Nuclear Information System (INIS)

    Bousbia-Salah, A.; Moretti, F.; D'auria, F.; Bousbia-Salah, A.)

    2007-01-01

    There is a common understanding among thermal-hydraulic experts that the system analysis codes have currently reached an acceptable degree of maturity. Reliable application, however, is still limited to the validated domain. There is a growing need for qualified codes in assessing the safety of the existing reactors and for developing advanced reactor systems. Under conditions involving multi-phase flow simulations, the use of classical methods, mainly based upon the one dimensional approach, is not appropriate at all. The use of new computational models, such as the direct numerical simulation, large-eddy simulation or other advanced computational fluid dynamics methods, seems to be more suitable for more complex events. For this purpose, the European Commission financed NURESIM Integrated Project (as a part of the FP6 programme), was adopted to provide the initial step towards a Common European Standard Software Platform for modelling, recording and recovering computer data for nuclear reactor simulations. Some of the studies carried out at the University of Pisa within the framework of the NURESIM project are presented in this paper. They mainly concern the investigation of two critical phenomena connected with jet instabilities and direct contact condensation that occur during emergency core cooling. Through these examples, the state-of-the-art and the need for model improvements and validation against new experimental data for the sake of getting a better understanding and more accurate predictions are discussed. (author)

  3. A Webcast of Bird Nesting as a State-of-the-Art Citizen Science.

    Science.gov (United States)

    Zárybnická, Markéta; Sklenicka, Petr; Tryjanowski, Piotr

    2017-01-01

    The quality of people's knowledge of nature has always had a significant influence on their approach to wildlife and nature conservation. However, direct interactions of people with nature are greatly limited nowadays, especially because of urbanization and modern lifestyles. As a result, our isolation from the natural world has been growing. Here, we present an example of a state-of-the-art Citizen Science project with its educational, scientific, and popularizing benefits. We conclude that modern media and new forms of education offer an effective opportunity for inspiring children and others to have fun learning to act like scientists. This approach provides broad opportunities for developing the hitherto neglected educational potential of Citizen Science.

  4. State of the art of solid state dosimetry

    International Nuclear Information System (INIS)

    Souza, Susana O.; Yamamoto, Takayoshi; D'Errico, Francesco

    2014-01-01

    Passive solid-state detectors still dominate the personal dosimetry field. This article provides state of the art in this field and summarizes the most recent works presented on TL, OSL and RPL during the 17th International Conference on Solid State Dosimetry held in Recife in September 2013. The Article contains in particular the techniques Thermoluminescence (TL), Optically Stimulated Luminescence (OSL), radio photoluminescence (RPL). Thermoluminescence has the biggest advantage of the wide availability of commercial materials for dosimetry, and the nature tissue-equivalent of several of these materials. The limitation of the TL dosimetry presents fading luminance signal and the need for high temperatures to obtain the signal. The Optically Stimulated Luminescence has the advantages of high sensitivity, the possibility of multiple reading, while its limit is the need to use response compensating filters in addition to the high cost of equipment and dosimeters still restricted very few options trading . The radio photoluminescence has a reading that is completely non-destructive, but their dosimeters present lack of tissue-equivalent and a high cost. Presents the details of the techniques and the advantages and limitations of each of these will be discussed

  5. Curriculum vitae method in science policy and research evaluation: the state-of-the-art

    OpenAIRE

    Carolina Cañibano; Barry Bozeman

    2009-01-01

    This is a state-of-the-art assessment for a small but burgeoning research approach, use of curricula vitae in research evaluation. The accumulated research remains sufficiently modest for us to consider nearly all published studies and the full range of research purposes to which CV analysis has been applied. CV analysis has been theory-driven, and theory and tools have increasingly converged. Advances in method and technique have been abetted especially by the push for a scientific and techn...

  6. State of the art in semiconductor detectors

    International Nuclear Information System (INIS)

    Rehak, P.; Gatti, E.

    1990-01-01

    The state of the art in semiconductor detectors for elementary particle physics and X-ray astronomy is briefly reviewed. Semiconductor detectors are divided into two groups; i) classical semiconductor diode detectors and ii) semiconductor memory detectors. Principles of signal formation for both groups of detectors are described and their performance is compared. New developments of silicon detectors are reported here. (orig.)

  7. State of the art in semiconductor detectors

    International Nuclear Information System (INIS)

    Rehak, P.; Gatti, E.

    1989-01-01

    The state of the art in semiconductor detectors for elementary particle physics and x-ray astronomy is briefly reviewed. Semiconductor detectors are divided into two groups; classical semiconductor diode detectors; and semiconductor memory detectors. Principles of signal formation for both groups of detectors are described and their performance is compared. New developments of silicon detectors are reported here. 13 refs., 8 figs

  8. Service-oriented computing : State of the art and research challenges

    NARCIS (Netherlands)

    Papazoglou, Michael P.; Traverso, Paolo; Dustdar, Schahram; Leymann, Frank

    2007-01-01

    Service-oriented computing promotes the idea of assembling application components into a network of services that can be loosely coupled to create flexible, dynamic business processes and agile applications that span organizations and computing platforms. An SOC research road map provides a context

  9. The state-of-the-art of HSR in Europe.

    NARCIS (Netherlands)

    Hansen, J.

    2009-01-01

    In this section of the workshop we present an overview based on mapping the current state-of-the-art concerning various fields of health services research, addressing the different levels of analysis in HSR. (1) HSR at the level of health care systems, being national or sometimes regional entities,

  10. State of the art in cosmology

    International Nuclear Information System (INIS)

    Zel'dovich, Ya.B.

    1983-01-01

    The present state of the art in cosmology is under discussion. The general picture of the Universe evolution is presented, and its main stages are outlined. The prooess of formation of the large scale Universe structure is considered. The possibility of investigation into the ''inflation'' period of the ''very-very early Universe'' from the view point of theoretical physics is sown. It is noted that cosmology will become a complete science only when physics gives an exhaustive answer to all issues raised by cosmology

  11. Aircraft wake vortices : a state-of-the-art review of the United States R&D program

    Science.gov (United States)

    1977-02-28

    The report summarizes the current state-of-the-art understanding : of the aircraft wake vortex phenomenon and the results of the United : States program to minimize the restrictions caused by aircraft wake : vortices in the terminal environment. The ...

  12. Wastewater treatment modelling in practice: a collaborative discussion of the state of the art.

    Science.gov (United States)

    Phillips, H M; Sahlstedt, K E; Frank, K; Bratby, J; Brennan, W; Rogowski, S; Pier, D; Anderson, W; Mulas, M; Copp, J B; Shirodkar, N

    2009-01-01

    Three consulting teams conducted independent modelling projects for three different wastewater treatment plants ranging in size from approximately 113,800 m(3)/d (30 mgd) to 530,000 m(3)/d (140 mgd), in different parts of the world (USA and Finland). The plants have different treatment objectives ranging from nitrification and partial denitrification (nitrate plus nitrite BioWin), and a variation of the Dold model methanol degradation capabilities (NGmeth within GPS-X). The authors compare and contrast the modelling approaches taken, including calibration and validation approaches, sensitivity analyses, and the application of results to full-scale studies, designs and operations. Despite several differences between the approaches, there are many similarities which are discussed in light of the IWA draft uniform protocol for activated sludge modelling. The authors also discuss current modelling limitations and offer suggestions to improve the state of the art.

  13. State of the art on fault-tolerant real time distributed systems

    International Nuclear Information System (INIS)

    Levkov, V.

    1992-06-01

    The integration of new computerized functions in power plant, and especially nuclear power plant, control and instrumentation systems implies more and more stringent requirements as to communication system reliability. For if an item of equipment, or even a computer program, can be validated and qualified, no formal qualification procedure is presently imposed on communication networks. This is certainly due to the relative immaturity of these networks, but also to their complexity. It is for this reason that, in the context of preparation for the future PWR 2000 standardized nuclear plants, it would seem appropriate to take a look at fault-tolerant communication systems. Since C and I type applications (in the control room) are divided between several computers and are required to contend with extremely severe time constraints, EDF has undertaken investigation of fault-tolerant, real time distributed systems. This paper summarized the state of the art in the field as it appears from discussion with computer manufacturers, academics and research workers on related projects. The results obtained were then used to determine trends as to ''promising'' solutions. The paper concludes with recommended study programs for the PCC department of EDF/R and DD for the next few years. (author), 9 figs., 10 refs., 2 annexes

  14. Chernobyl - state of the art

    International Nuclear Information System (INIS)

    Souza, Daiane C.B. de; Vicente, Roberto; Rostelato, Maria Elisa C.M.; Borges, Jessica F.; Tiezzi, Rodrigo; Peleias Junior, Fernando S.; Souza, Carla D.; Rodrigues, Bruna T.; Benega, Marcos A.G.; Souza, Anderson S. de; Silva, Thais H. da

    2014-01-01

    This article aims to analyze what has been done so far in relation to damage caused by the accident and the state of art in Chernobyl, as well as the impact on radiation protection applied safety nuclear power plants. In the first part of the work a data survey was done through a bibliographic review and the in the second part data was collected during a visit, in June 2013 at the crash site, when was observed dose values in the affected areas and the works of repairs that have been made in the sarcophagus and surroundings as well as in official reports available through active international bodies. The main results indicate significant improvements in radiation protection systems

  15. Adiabatic graph-state quantum computation

    International Nuclear Information System (INIS)

    Antonio, B; Anders, J; Markham, D

    2014-01-01

    Measurement-based quantum computation (MBQC) and holonomic quantum computation (HQC) are two very different computational methods. The computation in MBQC is driven by adaptive measurements executed in a particular order on a large entangled state. In contrast in HQC the system starts in the ground subspace of a Hamiltonian which is slowly changed such that a transformation occurs within the subspace. Following the approach of Bacon and Flammia, we show that any MBQC on a graph state with generalized flow (gflow) can be converted into an adiabatically driven holonomic computation, which we call adiabatic graph-state quantum computation (AGQC). We then investigate how properties of AGQC relate to the properties of MBQC, such as computational depth. We identify a trade-off that can be made between the number of adiabatic steps in AGQC and the norm of H-dot as well as the degree of H, in analogy to the trade-off between the number of measurements and classical post-processing seen in MBQC. Finally the effects of performing AGQC with orderings that differ from standard MBQC are investigated. (paper)

  16. As pesquisas denominadas "estado da arte" Research called "state of the art"

    Directory of Open Access Journals (Sweden)

    Norma Sandra de Almeida Ferreira

    2002-08-01

    Full Text Available Nos últimos quinze anos, no Brasil e em outros países, tem se produzido um conjunto significativo de pesquisas conhecidas pela denominação "estado da arte" ou "estado do conhecimento". Definidas como de caráter bibliográfico, elas parecem trazer em comum o desafio de mapear e de discutir uma certa produção acadêmica em diferentes campos do conhecimento, tentando responder que aspectos e dimensões vêm sendo destacados e privilegiados em diferentes épocas e lugares, de que formas e em que condições têm sido produzidas certas dissertações de mestrado, teses de doutorado, publicações em periódicos e comunicações em anais de congressos e de seminários. Neste artigo levanto e tento responder as seguintes questões: seria possível fazer um esforço de interrogar a história a produção acadêmica sobre determinada área do conhecimento, optando por ler apenas dados bibliográficos e resumos dos trabalhos? O que significa ler esse lugar (catálogos, instituição de divulgação dos trabalhos, tomando-o como fonte documental para um mapeamento da produção acadêmica, em pesquisas denominadas "estado da arte"?These last fifteen years, Brazil and other countries have seen the production of a significant set of research, known as "state of the art" or "state of knowledge". Defined as having a bibliographic feature, they seem to share the challenge of mapping and discussing a certain academic production in different fields of knowledge. They try to show which aspects and dimensions have been highlighted and privileged at different times and places. They also pinpoint how and in what conditions certain kinds of master's degree thesis and doctor's degree dissertations, publications in periodicals and communications in annals of congress and seminary were produced. In this article, I pose and try to answer the following questions: Is it worth making the effort of interrogating the history of the academic production about a given area

  17. The Impact of ART on Live Birth Outcomes: Differing Experiences across Three States.

    Science.gov (United States)

    Luke, Sabrina; Sappenfield, William M; Kirby, Russell S; McKane, Patricia; Bernson, Dana; Zhang, Yujia; Chuong, Farah; Cohen, Bruce; Boulet, Sheree L; Kissin, Dmitry M

    2016-05-01

    Research has shown an association between assisted reproductive technology (ART) and adverse birth outcomes. We identified whether birth outcomes of ART-conceived pregnancies vary across states with different maternal characteristics, insurance coverage for ART services, and type of ART services provided. CDC's National ART Surveillance System data were linked to Massachusetts, Florida, and Michigan vital records from 2000 through 2006. Maternal characteristics in ART- and non-ART-conceived live births were compared between states using chi-square tests. We performed multivariable logistic regression analyses and calculated adjusted odds ratios (aOR) to assess associations between ART use and singleton preterm delivery (birth. ART use in Massachusetts was associated with significantly lower odds of twins as well as triplets and higher order births compared to Florida and Michigan (aOR 22.6 vs. 30.0 and 26.3, and aOR 37.6 vs. 92.8 and 99.2, respectively; Pinteraction order gestations per cycle was lower in Massachusetts, which may be due to the availability of insurance coverage for ART in Massachusetts. © 2016 John Wiley & Sons Ltd.

  18. A quick guide to wind power forecating : state-of-the-art 2009.

    Energy Technology Data Exchange (ETDEWEB)

    Monteiro, C.; Keko, H.; Bessa, R.; Miranda, V.; Botterud, A.; Wang, J.; Conzelmann, G.; Decision and Information Sciences; INESC Porto

    2009-11-20

    This document contains a summary of the main findings from our full report entitled 'Wind Power Forecasting: State-of-the-Art 2009'. The aims of this document are to provide guidelines and a quick overview of the current state-of-the-art in wind power forecasting (WPF) and to point out lines of research in the future development of forecasting systems.

  19. The LIFE Laser Design in Context: A Comparison to the State-of-the-Art

    International Nuclear Information System (INIS)

    Deri, R.J.; Bayramian, A.J.; Erlandson, A.C.

    2011-01-01

    The current point design for the LIFE laser leverages decades of solid-state laser development in order to achieve the performance and attributes required for inertial fusion energy. This document provides a brief comparison of the LIFE laser point design to other state-of-the-art solid-state lasers. Table I compares the attributes of the current LIFE laser point design to other systems. the state-of-the-art for single-shot performance at fusion-relevant beamline energies is exemplified by performance observed on the National Ignition Facility. The state-of-the-art for high average power is exemplified by the Northrup Grumman JHPSSL laser. Several items in Table I deal with the laser efficiency; a more detailed discussion of efficiency can be found in reference 5. The electrical-to-optical efficiency of the LIFE design exceeds that of reference 4 due to the availability of higher efficiency laser diode pumps (70% vs. ∼50% used in reference 4). LIFE diode pumps are discussed in greater detail in reference 6. The 'beam steering' state of the art is represented by the deflection device that will be used in the LIFE laser, not a laser system. Inspection of Table I shows that most LIFE laser attributes have already been experimentally demonstrated. The two cases where the LIFE design is somewhat better than prior experimental work do not involve the development of new concepts: beamline power is increased simply by increasing aperture (as demonstrated by the power/aperture comparison in Table I), and efficiency increases are achieved by employing state-of-the-art diode pumps. In conclusion, the attributes anticipated for the LIFE laser are consistent with the demonstrated performance of existing solid-state lasers.

  20. Multilingual Sentiment Analysis: State of the Art and Independent Comparison of Techniques.

    Science.gov (United States)

    Dashtipour, Kia; Poria, Soujanya; Hussain, Amir; Cambria, Erik; Hawalah, Ahmad Y A; Gelbukh, Alexander; Zhou, Qiang

    With the advent of Internet, people actively express their opinions about products, services, events, political parties, etc., in social media, blogs, and website comments. The amount of research work on sentiment analysis is growing explosively. However, the majority of research efforts are devoted to English-language data, while a great share of information is available in other languages. We present a state-of-the-art review on multilingual sentiment analysis. More importantly, we compare our own implementation of existing approaches on common data. Precision observed in our experiments is typically lower than the one reported by the original authors, which we attribute to the lack of detail in the original presentation of those approaches. Thus, we compare the existing works by what they really offer to the reader, including whether they allow for accurate implementation and for reliable reproduction of the reported results.

  1. Imaging Acute Appendicitis: State of the Art

    Directory of Open Access Journals (Sweden)

    Diana Gaitini

    2011-01-01

    Full Text Available The goal of this review is to present the state of the art in imaging tests for the diagnosis of acute appendicitis. Relevant publications regarding performance and advantages/disadvantages of imaging modalities for the diagnosis of appendicitis in different clinical situations were reviewed. Articles were extracted from a computerized database (MEDLINE with the following activated limits: Humans, English, core clinical journals, and published in the last five years. Reference lists of relevant studies were checked manually to identify additional, related articles. Ultrasound (US examination should be the first imaging test performed, particularly among the pediatric and young adult populations, who represent the main targets for appendicitis, as well as in pregnant patients. A positive US examination for appendicitis or an alternative diagnosis of possible gastrointestinal or urological origin, or a negative US, either showing a normal appendix or presenting low clinical suspicion of appendicitis, should lead to a final diagnosis. A negative or indeterminate examination with a strong clinical suspicion of appendicitis should be followed by a computed tomography (CT scan or alternatively, a magnetic resonanace imaging (MRI scan in a pregnant patient. A second US examination in a patient with persistent symptoms, especially if the first one was performed by a less experienced imaging professional, is a valid alternative to a CT.

  2. Pediatric art preferences: countering the "one-size-fits-all" approach.

    Science.gov (United States)

    Nanda, Upali; Chanaud, Cheryl M; Brown, Linda; Hart, Robyn; Hathorn, Kathy

    2009-01-01

    To determine the stated art preferences of pediatric patients through an art survey and determine whether preferences vary, with different age groups associated with different stages of cognitive development. Exposure to visual art has been shown to have an impact on improved health and satisfaction outcomes. However, there is little literature on the effect of art on pediatric patients. While designing pediatric wards, a common assumption is to use fantasy and Disney-like themes; but research across all age groups on whether children prefer these themes is limited. A survey including 20 images with a variety of subject matter and styles was administered to 64 pediatric inpatients (ages 5-17) at Memorial Hermann Hospital in Houston, TX. Children were asked to rate the selection of, and their emotional response to, the images in the survey. Qualitative comments were recorded. Results were analyzed for each of the three age groups (5-6, 7-10, and 11-17 years) according to Piaget's developmental stages, as well as across all age groups. There were significant differences in art preferences across the different age groups, especially with respect to child art (art created by children). Overall, the results for 5-10-year-olds were more significant than those for 11-17-year-olds (adolescents). Nature elements were preferred across all age groups, but all nature images were not rated similarly. Images that were bright and colorful were rated better than images that were pale. The presence of a strong context that children could associate with was a defining feature of preferred images. Content drove preference more than style, though color was a key determinant. Comments on the artwork tended to be more objective/absolute for the youngest patients and more subjective/relative for the oldest. The combination of bright colors, engaging themes, and nature content is consistently highly rated by pediatric patients. However, pediatric preferences vary significantly among the

  3. Radiation protection of the environment. State of the art and recommendations by the IRSN

    International Nuclear Information System (INIS)

    Beaugelin-Seiller, K.; Garnier-Laplace, J.; Gilbin, R.; Simon-Cornu, M.; Baudry, M.; Deschamps, P.; Gariel, J.C.; Lecomte, J.F.; Paquet, F.; Renaud, P.; Schuler, M.

    2016-01-01

    This report notably aims at helping the GPRADE (Groupe permanent d'experts en radioprotection, pour les applications industrielles et de recherche des rayonnements ionisants, et en environnement - Permanent group of experts in radiation protection for industrial and research applications of ionizing radiations, and in environment) to build up its opinion on the French management of methods and technical regulations for the assessment of the radiological risk for the environment, or for the national transposition of the 2013/59/Euratom European directive. After a brief overview of the international, European and French legal context, the report proposes an overview of the state of the art: history, definitions, principles, regulation of radiation protection of the environment in different countries. It presents the main approaches and compares them: the CIPR approach, the Erica approach (the most used in Europe). It also discusses the compatibility of main approaches to the assessment of the radiological risk for ecosystems. It reports applications and returns on experience at the international level and within the frame of the IRSN commitment in planned, existing or emergency situations. Recommendations are formulated

  4. The new science of moral cognition: the state of the art

    Directory of Open Access Journals (Sweden)

    Antonio Olivera La Rosa

    2014-10-01

    Full Text Available The need for multidisciplinary approaches to the scientific study of human nature is a widely supported academic claim. This assumption has proved to be especially successful in the field of moral psychology. Although studies of moral topics have been ubiquitous in both humanities and social sciences, it is not until the integration of different scientific disciplines in the convergent science of moral psychology that the study of morality seems to start its flourishing age. Thus, in the last ten years, a growing body of research from cognitive sciences, experimental philosophy, primatology, clinical and developmental psychology, economy and anthropology have made possible a "new era" on the study of morality. In this paper, we review the most striking findings that constitute the "state of the art' of moral psychology, with the aim to facilitate a better understanding of how the mind functions in the moral domain.

  5. CO2 geological sequestration: state of art in Italy and abroad

    International Nuclear Information System (INIS)

    Quattrocchi, Fedora; Bencini, Roberto

    2005-01-01

    This paper proposes a wide scenario on the state of art in Italy and abroad of industrial CO 2 geological sequestration, with particular attention to Weyburn Project. Geochemical monitoring techniques are described, mentioning also geophysical monitoring techniques for CO 2 injected into the soil. Critical choices and objections in Italy to a complete use of clean fossil fuels, hydrogen carrier, clean coal technologies: all of these approaches require geological sequestration of CO 2 [it

  6. Modular robotics overview of the 'state of the art'

    International Nuclear Information System (INIS)

    Kress, R.L.; Jansen, J.F.; Hamel, W.R.

    1996-08-01

    The design of a robotic arm processing modular components and reconfigurable links is the general goal of a modular robotics development program. The impetus behind the pursuit of modular design is the remote engineering paradigm of improved reliability and availability provided by the ability to remotely maintain and repair a manipulator operating in a hazardous environment by removing and replacing worn or failed modules. Failed components can service off- line and away from hazardous conditions. The desire to reconfigure an arm to perform different tasks is also an important driver for the development of a modular robotic manipulator. In order to bring to fruition a truly modular manipulator, an array of technical challenges must be overcome. These range from basic mechanical and electrical design considerations such as desired kinematics, actuator types, and signal and transmission types and routings, through controls issues such as the need for control algorithms capable of stable free space and contact control, to computer and sensor design issues like consideration of the use of embedded processors and redundant sensors. This report presents a brief overview of the state of the art of technical issues relevant of modular robotic arm design. The focus is on breadth of coverage, rather than depth, in order to provide a reference frame for future development

  7. Immunosuppression for in vivo research: state-of-the-art protocols and experimental approaches

    Institute of Scientific and Technical Information of China (English)

    Rita Diehl; Fabienne Ferrara; Claudia Müller; Antje Y Dreyer; Damian D McLeod; Stephan Fricke; Johannes Boltze

    2017-01-01

    Almost every experimental treatment strategy using non-autologous cell,tissue or organ transplantation is tested in small and large animal models before clinical translation.Because these strategies require immunosuppression in most cases,immunosuppressive protocols are a key element in transplantation experiments.However,standard immunosuppressive protocols are often applied without detailed knowledge regarding their efficacy within the particular experimental setting and in the chosen model species.Optimization of such protocols is pertinent to the translation of experimental results to human patients and thus warrants further investigation.This review summarizes current knowledge regarding immunosuppressive drug classes as well as their dosages and application regimens with consideration of species-specific drug metabolization and side effects.It also summarizes contemporary knowledge of novel immunomodulatory strategies,such as the use of mesenchymal stem cells or antibodies.Thus,this review is intended to serve as a state-of-the-art compendium for researchers to refine applied experimental immunosuppression and immunomodulation strategies to enhance the predictive value of preclinical transplantation studies.

  8. Listening to objects: an ecological approach to the decorative arts

    Directory of Open Access Journals (Sweden)

    Erin J. Campbell

    2014-12-01

    Full Text Available To transcend the divisions in art historical research between high art and decorative art, this study proposes an ecological approach. Drawing on research in the social sciences and humanities, and using the early modern domestic interior as a case study, the essay develops the concepts of environment, ecology, meshwork, assemblage, distributive agency, vital materiality, and matter as social performance, which appear in the work of political scientist Jane Bennett, feminist philosopher Karen Barad, sociologist Bruno Latour, anthropologist Tim Ingold, and others. As the study argues, such concepts provide a phenomenological, integrative, and non-hierarchical framework for the study of the decorative arts within the institutions and practices of art history, allowing art historians to analyse the processes through which the human and the material are intertwined.

  9. Exploring the benefits of intersectional feminist social justice approaches in art psychotherapy

    OpenAIRE

    Wright, T.; Wright, K.

    2017-01-01

    This paper charts a research and knowledge exchange project between a university and group of art psychotherapists who came together in a project aimed at better understanding the benefits of critical feminist social justice approaches to art psychotherapy. It outlines the impact of the partnership for art psychotherapy practice, practitioners’ continued professional development and patients’/ service users’ benefit. Drawing on knowledges of critical feminisms held within the university and a...

  10. Discovery of resources using MADM approaches for parallel and distributed computing

    Directory of Open Access Journals (Sweden)

    Mandeep Kaur

    2017-06-01

    Full Text Available Grid, a form of parallel and distributed computing, allows the sharing of data and computational resources among its users from various geographical locations. The grid resources are diverse in terms of their underlying attributes. The majority of the state-of-the-art resource discovery techniques rely on the static resource attributes during resource selection. However, the matching resources based on the static resource attributes may not be the most appropriate resources for the execution of user applications because they may have heavy job loads, less storage space or less working memory (RAM. Hence, there is a need to consider the current state of the resources in order to find the most suitable resources. In this paper, we have proposed a two-phased multi-attribute decision making (MADM approach for discovery of grid resources by using P2P formalism. The proposed approach considers multiple resource attributes for decision making of resource selection and provides the best suitable resource(s to grid users. The first phase describes a mechanism to discover all matching resources and applies SAW method to shortlist the top ranked resources, which are communicated to the requesting super-peer. The second phase of our proposed methodology applies integrated MADM approach (AHP enriched PROMETHEE-II on the list of selected resources received from different super-peers. The pairwise comparison of the resources with respect to their attributes is made and the rank of each resource is determined. The top ranked resource is then communicated to the grid user by the grid scheduler. Our proposed methodology enables the grid scheduler to allocate the most suitable resource to the user application and also reduces the search complexity by filtering out the less suitable resources during resource discovery.

  11. Radiation physics of high power spallation targets. State of the art simulation methods and experiments, the 'European Spallation Source' (ESS)

    International Nuclear Information System (INIS)

    Filges, D.; Cloth, P.; Neef, R.D.; Schaal, H.

    1998-01-01

    Particle transport and nuclear interactions of planned high power spallation targets with GeV proton beams can be simulated using widely developed Monte Carlo transport methods. This includes available high energy radiation transport codes and systems for low energy, earlier developed for reactor physics and fusion technology. Monte Carlo simulation codes and applied methods are discussed. The capabilities of the world-wide existing state-of-the-art computer code systems are demonstrated. Results of computational studies for the 'European Spallation Source' (ESS) mercury high power target station are given. The needs for spallation related data and planned experiments are shown. (author)

  12. The state-of-the-art of the LTAN method in the solution of the transport equation in a slab

    International Nuclear Information System (INIS)

    Vieira Cardona, A.; Panta Pazos, R.; Tullio de Vilhena, M.

    2004-01-01

    In this work we report the state-of-the-art of the LTA N method, reporting the derivation of the LTA N homogeneous and particular solution in a slab for large N (N N method. We show that the LTA N method, consequently the Laplace transform technique, is a quite general approach to solve a wide class of transport problems in a slab mainly the ones requiring an arbitrary source and large N

  13. Nickel-base superalloy powder metallurgy: state-of-the-art

    International Nuclear Information System (INIS)

    Allen, M.M.; Athey, R.L.; Moore, J.B.

    1975-01-01

    Development of powder metallurgical methods for fabrication of Ni-base superalloy turbine engine disks is reviewed. Background studies are summarized and current state-of-art is discussed for the F100 jet engine, advanced applications, and forging processes

  14. Computation as Medium

    DEFF Research Database (Denmark)

    Jochum, Elizabeth Ann; Putnam, Lance

    2017-01-01

    Artists increasingly utilize computational tools to generate art works. Computational approaches to art making open up new ways of thinking about agency in interactive art because they invite participation and allow for unpredictable outcomes. Computational art is closely linked...... to the participatory turn in visual art, wherein spectators physically participate in visual art works. Unlike purely physical methods of interaction, computer assisted interactivity affords artists and spectators more nuanced control of artistic outcomes. Interactive art brings together human bodies, computer code......, and nonliving objects to create emergent art works. Computation is more than just a tool for artists, it is a medium for investigating new aesthetic possibilities for choreography and composition. We illustrate this potential through two artistic projects: an improvisational dance performance between a human...

  15. SSAT State-of-the-Art Conference: Current Surgical Management of Gastric Tumors.

    Science.gov (United States)

    Norton, Jeffrey A; Kim, Teresa; Kim, Joseph; McCarter, Martin D; Kelly, Kaitlyn J; Wong, Joyce; Sicklick, Jason K

    2018-01-01

    The current era of gastric surgery is marked by low morbidity and mortality rates, innovative strategies to approach resections with a minimally invasive fashion or hyperthermic intraperitoneal chemotherapy (HIPEC), as well as improved understanding of the biology of sporadic and hereditary stromal, neuroendocrine, and epithelial malignancies. In 2017, the Society for Surgery of the Alimentary Tract convened a State-of-the-Art Conference on Current Surgical Management of Gastric Tumors with both international experts and emerging leaders in the field of gastric surgery. Martin D. McCarter, MD of the University of Colorado discussed the current management of gastric gastrointestinal stromal tumors (GIST). Kaitlyn J. Kelly, MD of the University of California, San Diego discussed the management of gastric carcinoid tumors. Jeffrey A. Norton of Stanford University discussed recent advances in the management of gastric adenocarcinoma including a focus on hereditary diffuse gastric cancer (HDGC). Joseph Kim, MD of Stony Brook University discussed a systematic approach to minimally invasive gastrectomy for cancer. Joyce Wong, MD of Pennsylvania State University discussed the role for cytoreductive surgery (CRS) and HIPEC for gastric adenocarcinoma. This review provides gastrointestinal surgeons with a concise update on the current surgical management of gastric tumors.

  16. State-of-the-Art Techniques in Treating Peripheral Nerve Injury.

    Science.gov (United States)

    Kubiak, Carrie A; Kung, Theodore A; Brown, David L; Cederna, Paul S; Kemp, Stephen W P

    2018-03-01

    Peripheral nerve injuries remain a major clinical concern, as they often lead to chronic disability and significant health care expenditures. Despite advancements in microsurgical techniques to enhance nerve repair, biological approaches are needed to augment nerve regeneration and improve functional outcomes after injury. Presented herein is a review of the current literature on state-of-the-art techniques to enhance functional recovery for patients with nerve injury. Four categories are considered: (1) electroceuticals, (2) nerve guidance conduits, (3) fat grafting, and (4) optogenetics. Significant study results are highlighted, focusing on histologic and functional outcome measures. This review documents the current state of the literature. Advancements in neuronal stimulation, tissue engineering, and cell-based therapies demonstrate promise with regard to augmenting nerve regeneration and appropriate rehabilitation. The future of treating peripheral nerve injury will include multimodality use of electroconductive conduits, fat grafting, neuronal stimulation, and optogenetics. Further clinical investigation is needed to confirm the efficacy of these technologies on peripheral nerve recovery in humans, and how best to implement this treatment for a diverse population of nerve-injured patients.

  17. Quantum vertex model for reversible classical computing.

    Science.gov (United States)

    Chamon, C; Mucciolo, E R; Ruckenstein, A E; Yang, Z-C

    2017-05-12

    Mappings of classical computation onto statistical mechanics models have led to remarkable successes in addressing some complex computational problems. However, such mappings display thermodynamic phase transitions that may prevent reaching solution even for easy problems known to be solvable in polynomial time. Here we map universal reversible classical computations onto a planar vertex model that exhibits no bulk classical thermodynamic phase transition, independent of the computational circuit. Within our approach the solution of the computation is encoded in the ground state of the vertex model and its complexity is reflected in the dynamics of the relaxation of the system to its ground state. We use thermal annealing with and without 'learning' to explore typical computational problems. We also construct a mapping of the vertex model into the Chimera architecture of the D-Wave machine, initiating an approach to reversible classical computation based on state-of-the-art implementations of quantum annealing.

  18. Additive manufacturing of titanium alloys state of the art, challenges and opportunities

    CERN Document Server

    Dutta, Bhaskar

    2016-01-01

    Additive Manufacturing of Titanium Alloys: State of the Art, Challenges and Opportunities provides alternative methods to the conventional approach for the fabrication of the majority of titanium components produced via the cast and wrought technique, a process which involves a considerable amount of expensive machining. In contrast, the Additive Manufacturing (AM) approach allows very close to final part configuration to be directly fabricated minimizing machining cost, while achieving mechanical properties at least at cast and wrought levels. In addition, the book offers the benefit of significant savings through better material utilization for parts with high buy-to-fly ratios (ratio of initial stock mass to final part mass before and after manufacturing). As titanium additive manufacturing has attracted considerable attention from both academicians and technologists, and has already led to many applications in aerospace and terrestrial systems, as well as in the medical industry, this book explores the un...

  19. Fractal-Based Methods and Inverse Problems for Differential Equations: Current State of the Art

    Directory of Open Access Journals (Sweden)

    Herb E. Kunze

    2014-01-01

    Full Text Available We illustrate, in this short survey, the current state of the art of fractal-based techniques and their application to the solution of inverse problems for ordinary and partial differential equations. We review several methods based on the Collage Theorem and its extensions. We also discuss two innovative applications: the first one is related to a vibrating string model while the second one considers a collage-based approach for solving inverse problems for partial differential equations on a perforated domain.

  20. Virtual microscopy and digital cytology: state of the art.

    Science.gov (United States)

    Giansanti, Daniele; Grigioni, Mauro; D'Avenio, Giuseppe; Morelli, Sandra; Maccioni, Giovanni; Bondi, Arrigo; Giovagnoli, Maria Rosaria

    2010-01-01

    The paper approaches a new technological scenario relevant for the introduction of the digital cytology (D-CYT) in the health service. A detailed analysis of the state of the art on the status of the introduction of D-CYT in the hospital and more in general in the dispersed territory has been conducted. The analysis was conducted in a form of review and was arranged into two parts: the first part focused on the technological tools needed to carry out a successful service (client server architectures, e-learning, quality assurance issues); the second part focused on issues oriented to help the introduction and evaluation of the technology (specific training in D-CYT, health technology assessment in-routine application, data format standards and picture archiving computerized systems (PACS) implementation, image quality assessment, strategies of navigation, 3D-virtual-reality potentialities). The work enlightens future scenarios of actions relevant for the introduction of the technology.

  1. Virtual microscopy and digital cytology: state of the art

    Directory of Open Access Journals (Sweden)

    Daniele Giansanti

    2010-06-01

    Full Text Available The paper approaches a new technological scenario relevant for the introduction of the digital cytology (D-CYT in the health service. A detailed analysis of the state of the art on the status of the introduction of D-CYT in the hospital and more in general in the dispersed territory has been conducted. The analysis was conducted in a form of review and was arranged into two parts: the first part focused on the technological tools needed to carry out a successful service (client server architectures, e-learning, quality assurance issues; the second part focused on issues oriented to help the introduction and evaluation of the technology (specific training in D-CYT, health technology assessment in-routine application, data format standards and picture archiving computerized systems (PACS implementation, image quality assessment, strategies of navigation, 3D-virtual-reality potentialities. The work enlightens future scenarios of actions relevant for the introduction of the technology.

  2. Measuring the State-of-the-Art in Laser Cut Quality

    OpenAIRE

    Pocorni, Jetro; Powell, John; Ilar, Torbjörn; Schwarz, A.; Kaplan, Alexander

    2013-01-01

    This paper discusses the strategy appropriate to investigating the state of the art of laser cutting from an industrial point of view. The importance of creating the samples in a high quality industrial environment is emphasised and preliminary results are presented.

  3. The National Shipbuilding Research Program, Computer Aided Process Planning for Shipyards

    Science.gov (United States)

    1986-08-01

    Factory Simulation with Conventional Factory Planning Techniques Financial Justification of State-of-the-Art Investment: A Study Using CAPP I–5 T I T L...and engineer to order.” “Factory Simulation: Approach to Integration of Computer- Based Factory Simulation with Conventional Factory Planning Techniques

  4. Fluidelastic vibration of cylinder arrays in axial and cross flow--state of the art

    International Nuclear Information System (INIS)

    Paidoussis, M.P.

    1981-01-01

    A critical assessment of the state of the art for flow-induced vibrations of cylinder arrays in cross and axial flow is presented. An historical review highlights the contributions which advanced understanding of the flow-induced vibration phenomena involved and/or predictive ability. In the case of axial-flow-induced vibration, the absence of separated flow regions has contributed towards the development of analytical predictive tools. The designer may predict the onset of fluidelastic instabilities, which generally occur at very high flow velocities, with greater confidence. In contrast, in the case of cross-flow-induced vibration, the complexity of the flow has encouraged more heuristic approaches to be adopted. The state of the art in this case is discussed with the aid of a new classification of the flow-induced vibration phenomena involved, to unify and clarify the contradictory claims facing the designer. It is concluded that, although the physical understanding of cross-flow-induced vibration phenomena is not good, useful design guidelines do exist. These are capable of predicting vibration characteristics to within a factor of 2 to 10. A comprehensive bibliography is included. 115 refs

  5. State of the art metrics for aspect oriented programming

    Science.gov (United States)

    Ghareb, Mazen Ismaeel; Allen, Gary

    2018-04-01

    The quality evaluation of software, e.g., defect measurement, gains significance with higher use of software applications. Metric measurements are considered as the primary indicator of imperfection prediction and software maintenance in various empirical studies of software products. However, there is no agreement on which metrics are compelling quality indicators for novel development approaches such as Aspect Oriented Programming (AOP). AOP intends to enhance programming quality, by providing new and novel constructs for the development of systems, for example, point cuts, advice and inter-type relationships. Hence, it is not evident if quality pointers for AOP can be derived from direct expansions of traditional OO measurements. Then again, investigations of AOP do regularly depend on established coupling measurements. Notwithstanding the late reception of AOP in empirical studies, coupling measurements have been adopted as useful markers of flaw inclination in this context. In this paper we will investigate the state of the art metrics for measurement of Aspect Oriented systems development.

  6. State-of-the-art radioecological models implemented in decision support systems for the management of the fresh water environment

    International Nuclear Information System (INIS)

    Monte, Luigi

    2007-01-01

    The present lecture summarises the main results of a review and assessment of state-of-the-art models implemented in computerised decision support systems aimed at assisting the management of fresh water ecosystems contaminated by radioactive substances. The approaches of the various models to simulate the complex behaviour of radionuclides in the aquatic environment were discussed. A critical analysis of the whole sector was carried out in order to frame in a comprehensive perspective several complementary issues: model uncertainty, environmental variability, information incompleteness, multi-model approach, use of models for the decision making. (author)

  7. Development of a state-of-the-art solid waste characterisation facility at JRC ISPRA

    International Nuclear Information System (INIS)

    Huhtiniemi, I.; Anselmi, M.; Hubert, P.; Vassallo, G.

    2003-01-01

    This paper will review the development and construction of a state-of-the-art waste characterisation facility that represents a fundamental element in the JRC's strategy to characterise radioactive wastes originating from four decades of nuclear research activities conducted at the Ispra Site. The state-of-the-art NDA measurement solution selected by JRC-Ispra will be presented in the light of special requirements imposed by applicable Italian legislation, norms and the qualities of the waste packages. The intended plant combines the state-of-the-art-measurement solution with comprehensive process automation in an industrial environment and is therefore of significant interest to the radioactive waste management community. (orig.)

  8. Can state-of-the-art HVS-based objective image quality criteria be used for image reconstruction techniques based on ROI analysis?

    Science.gov (United States)

    Dostal, P.; Krasula, L.; Klima, M.

    2012-06-01

    Various image processing techniques in multimedia technology are optimized using visual attention feature of the human visual system. Spatial non-uniformity causes that different locations in an image are of different importance in terms of perception of the image. In other words, the perceived image quality depends mainly on the quality of important locations known as regions of interest. The performance of such techniques is measured by subjective evaluation or objective image quality criteria. Many state-of-the-art objective metrics are based on HVS properties; SSIM, MS-SSIM based on image structural information, VIF based on the information that human brain can ideally gain from the reference image or FSIM utilizing the low-level features to assign the different importance to each location in the image. But still none of these objective metrics utilize the analysis of regions of interest. We solve the question if these objective metrics can be used for effective evaluation of images reconstructed by processing techniques based on ROI analysis utilizing high-level features. In this paper authors show that the state-of-the-art objective metrics do not correlate well with subjective evaluation while the demosaicing based on ROI analysis is used for reconstruction. The ROI were computed from "ground truth" visual attention data. The algorithm combining two known demosaicing techniques on the basis of ROI location is proposed to reconstruct the ROI in fine quality while the rest of image is reconstructed with low quality. The color image reconstructed by this ROI approach was compared with selected demosaicing techniques by objective criteria and subjective testing. The qualitative comparison of the objective and subjective results indicates that the state-of-the-art objective metrics are still not suitable for evaluation image processing techniques based on ROI analysis and new criteria is demanded.

  9. The geography of maternal and newborn health: the state of the art.

    Science.gov (United States)

    Ebener, Steeve; Guerra-Arias, Maria; Campbell, James; Tatem, Andrew J; Moran, Allisyn C; Amoako Johnson, Fiifi; Fogstad, Helga; Stenberg, Karin; Neal, Sarah; Bailey, Patricia; Porter, Reid; Matthews, Zoe

    2015-05-27

    As the deadline for the millennium development goals approaches, it has become clear that the goals linked to maternal and newborn health are the least likely to be achieved by 2015. It is therefore critical to ensure that all possible data, tools and methods are fully exploited to help address this gap. Among the methods that are under-used, mapping has always represented a powerful way to 'tell the story' of a health problem in an easily understood way. In addition to this, the advanced analytical methods and models now being embedded into Geographic Information Systems allow a more in-depth analysis of the causes behind adverse maternal and newborn health (MNH) outcomes. This paper examines the current state of the art in mapping the geography of MNH as a starting point to unleashing the potential of these under-used approaches. Using a rapid literature review and the description of the work currently in progress, this paper allows the identification of methods in use and describes a framework for methodological approaches to inform improved decision-making. The paper is aimed at health metrics and geography of health specialists, the MNH community, as well as policy-makers in developing countries and international donor agencies.

  10. Flexible AC transmission systems: the state of the art

    Energy Technology Data Exchange (ETDEWEB)

    Edris, Abdel-Aty [Electric Power Research Inst., Palo Alto, CA (United States). Electric Systems Division

    1994-12-31

    Flexible AC transmission systems (FACTS) is a concept promoting the use of power electronic controllers to enhance the controllability and usable capacity of AC transmission. This paper presents the state of the art of FACTS and the status of the current projects for the application of the FACTS controllers in transmission systems. (author) 8 refs., 8 figs.

  11. Fragment-based approaches to anti-HIV drug discovery: state of the art and future opportunities.

    Science.gov (United States)

    Huang, Boshi; Kang, Dongwei; Zhan, Peng; Liu, Xinyong

    2015-12-01

    The search for additional drugs to treat HIV infection is a continuing effort due to the emergence and spread of HIV strains resistant to nearly all current drugs. The recent literature reveals that fragment-based drug design/discovery (FBDD) has become an effective alternative to conventional high-throughput screening strategies for drug discovery. In this critical review, the authors describe the state of the art in FBDD strategies for the discovery of anti-HIV drug-like compounds. The article focuses on fragment screening techniques, direct fragment-based design and early hit-to-lead progress. Rapid progress in biophysical detection and in silico techniques has greatly aided the application of FBDD to discover candidate agents directed at a variety of anti-HIV targets. Growing evidence suggests that structural insights on key proteins in the HIV life cycle can be applied in the early phase of drug discovery campaigns, providing valuable information on the binding modes and efficiently prompting fragment hit-to-lead progression. The combination of structural insights with improved methodologies for FBDD, including the privileged fragment-based reconstruction approach, fragment hybridization based on crystallographic overlays, fragment growth exploiting dynamic combinatorial chemistry, and high-speed fragment assembly via diversity-oriented synthesis followed by in situ screening, offers the possibility of more efficient and rapid discovery of novel drugs for HIV-1 prevention or treatment. Though the use of FBDD in anti-HIV drug discovery is still in its infancy, it is anticipated that anti-HIV agents developed via fragment-based strategies will be introduced into the clinic in the future.

  12. Perturbation approach for nuclear magnetic resonance solid-state quantum computation

    Directory of Open Access Journals (Sweden)

    G. P. Berman

    2003-01-01

    Full Text Available A dynamics of a nuclear-spin quantum computer with a large number (L=1000 of qubits is considered using a perturbation approach. Small parameters are introduced and used to compute the error in an implementation of an entanglement between remote qubits, using a sequence of radio-frequency pulses. The error is computed up to the different orders of the perturbation theory and tested using exact numerical solution.

  13. Safety I and C system platforms - State-of-the-art and long-term available - A contradiction in terms?

    International Nuclear Information System (INIS)

    Richter, Steffen; Martin, Michael

    2006-01-01

    Automation systems, particularly in the field of safety I and C, are subject to conflict between three challenges. Customers' requests for state-of-the-art technology, ever shorter innovation cycles in the electronics industry and computer business and the requirement for long-term spare parts supply demand thorough and sustainable concepts from the supply market. The TELEPERM XS digital safety I and C platform has been applied successfully since 1998 for the modernization of safety I and C systems in over 30 NPP units from different reactor suppliers as well as for new plant construction. The platform is subject to a forward-looking life cycle management program combining an evolutionary and future-oriented approach to platform development with measures for ensuring the long-term support of the installed base. Driven by ever shorter innovation cycles in the electronics and automation industry, the platform is continuously evolved with state-of-the-art technology and enhanced safety features. The continuous innovation process is combined with maximum compatibility of the I and C components that make up the TELEPERM XS system platform. This makes the system future-oriented and simultaneously assures long-term availability of replacement parts. In this way TELEPERM XS meets the customer requirements for up-to-date but proven technology suitable to ensure an operating life of safety I and C equipment spanning several decades. As a matter of course, the platform and component development adheres to the robust and proven architecture of TELEPERM XS, thereby limiting risks for equipment qualification and project licensing to a minimum. (authors)

  14. Safety I and C system platforms - State-of-the-art and long-term available - A contradiction in terms?

    Energy Technology Data Exchange (ETDEWEB)

    Richter, Steffen; Martin, Michael [Framatome ANP GmbH, P.O. Box 3220, Freyeslebenstrasse 1, D-91050 Erlangen (Germany)

    2006-07-01

    Automation systems, particularly in the field of safety I and C, are subject to conflict between three challenges. Customers' requests for state-of-the-art technology, ever shorter innovation cycles in the electronics industry and computer business and the requirement for long-term spare parts supply demand thorough and sustainable concepts from the supply market. The TELEPERM XS digital safety I and C platform has been applied successfully since 1998 for the modernization of safety I and C systems in over 30 NPP units from different reactor suppliers as well as for new plant construction. The platform is subject to a forward-looking life cycle management program combining an evolutionary and future-oriented approach to platform development with measures for ensuring the long-term support of the installed base. Driven by ever shorter innovation cycles in the electronics and automation industry, the platform is continuously evolved with state-of-the-art technology and enhanced safety features. The continuous innovation process is combined with maximum compatibility of the I and C components that make up the TELEPERM XS system platform. This makes the system future-oriented and simultaneously assures long-term availability of replacement parts. In this way TELEPERM XS meets the customer requirements for up-to-date but proven technology suitable to ensure an operating life of safety I and C equipment spanning several decades. As a matter of course, the platform and component development adheres to the robust and proven architecture of TELEPERM XS, thereby limiting risks for equipment qualification and project licensing to a minimum. (authors)

  15. State of the art and taxonomy of prognostics approaches, trends of prognostics applications and open issues towards maturity at different technology readiness levels

    Science.gov (United States)

    Javed, Kamran; Gouriveau, Rafael; Zerhouni, Noureddine

    2017-09-01

    Integrating prognostics to a real application requires a certain maturity level and for this reason there is a lack of success stories about development of a complete Prognostics and Health Management system. In fact, the maturity of prognostics is closely linked to data and domain specific entities like modeling. Basically, prognostics task aims at predicting the degradation of engineering assets. However, practically it is not possible to precisely predict the impending failure, which requires a thorough understanding to encounter different sources of uncertainty that affect prognostics. Therefore, different aspects crucial to the prognostics framework, i.e., from monitoring data to remaining useful life of equipment need to be addressed. To this aim, the paper contributes to state of the art and taxonomy of prognostics approaches and their application perspectives. In addition, factors for prognostics approach selection are identified, and new case studies from component-system level are discussed. Moreover, open challenges toward maturity of the prognostics under uncertainty are highlighted and scheme for an efficient prognostics approach is presented. Finally, the existing challenges for verification and validation of prognostics at different technology readiness levels are discussed with respect to open challenges.

  16. Assessment of the State of the Art of Flight Control Technologies as Applicable to Adverse Conditions

    Science.gov (United States)

    Reveley, Mary s.; Briggs, Jeffrey L.; Leone, Karen M.; Kurtoglu, Tolga; Withrow, Colleen A.

    2010-01-01

    Literature from academia, industry, and other Government agencies was surveyed to assess the state of the art in current Integrated Resilient Aircraft Control (IRAC) aircraft technologies. Over 100 papers from 25 conferences from the time period 2004 to 2009 were reviewed. An assessment of the general state of the art in adaptive flight control is summarized first, followed by an assessment of the state of the art as applicable to 13 identified adverse conditions. Specific areas addressed in the general assessment include flight control when compensating for damage or reduced performance, retrofit software upgrades to flight controllers, flight control through engine response, and finally test and validation of new adaptive controllers. The state-of-the-art assessment applicable to the adverse conditions include technologies not specifically related to flight control, but may serve as inputs to a future flight control algorithm. This study illustrates existing gaps and opportunities for additional research by the NASA IRAC Project

  17. The Bipolar Approach: A Model for Interdisciplinary Art History Courses.

    Science.gov (United States)

    Calabrese, John A.

    1993-01-01

    Describes a college level art history course based on the opposing concepts of Classicism and Romanticism. Contends that all creative work, such as film or architecture, can be categorized according to this bipolar model. Includes suggestions for objects to study and recommends this approach for art education at all education levels. (CFR)

  18. Three State-of-the-Art Methods for Condition Monitoring

    NARCIS (Netherlands)

    Grimmelius, H.T.; Meiler, P.P.; Maas, H.L.M.M.; Bonnier, B.; Grevink, J.S.; Kuilenburg, R.F. van

    1999-01-01

    This paper describes and compares three different state-of-the-art condition monitoring techniques: first principles, feature extraction, and neural networks. The focus of the paper is on the application of the techniques, not on the underlying theory. Each technique is described briefly and is

  19. Affective computing and medical informatics: state of the art in emotion-aware medical applications.

    Science.gov (United States)

    Luneski, Andrej; Bamidis, Panagiotis D; Hitoglou-Antoniadou, Madga

    2008-01-01

    The area of affective computing has received significant attention by the research community over the last few years. In this paper we review the underlying principles in the field, in an effort to draw threads for possible future development within medical informatics. The approach is lead by considering the three main affective channels, namely, visual, audio/speech, and physiological in relation to e-health, emotional intelligence and e-learning. A discussion on the importance of past and present applications together with a prediction on future literature output is also provided.

  20. Leadership and Fairness: The state of the art.

    OpenAIRE

    van Knippenberg, D.; de Cremer, D.; van Knippenberg, B.M.

    2007-01-01

    textabstractResearch in leadership effectiveness has paid less to the role of leader fairness than probably it should have. More recently, this has started to change. To capture this development, we review the empirical literature in leadership and fairness to define the field of leadership and fairness, to assess the state of the art, and to identify a research agenda for future efforts in the field. The review shows that leader distributive, procedural, and especially interactional fairness...

  1. Art and architecture as experience: an alternative approach to bridging art history and the neurosciences.

    Science.gov (United States)

    Zschocke, Nina

    2012-08-01

    In 1972, Michael Baxandal characterizes the processes responsible for the cultural relativism of art experience as highly complex and unknown in their physiological detail. While art history still shows considerable interest in the brain sciences forty years later, most cross-disciplinary studies today are referring to the neurosciences in an attempt to seek scientific legitimization of variations of a generalized and largely deterministic model of perception, reducing interaction between a work of art and its observers to a set of biological automatisms. I will challenge such an approach and take up art theory's interest in the historico-cultural and situational dimensions of art experience. Looking at two examples of large-scale installation and sculptural post-war American art, I will explore instable perceptions of depth and changing experiences of space that indicate complex interactions between perceptual and higher cognitive processes. The argument will draw on recent theories describing neuronal processes underlying multistable phenomena, eye movement, visual attention and decision-making. As I will show a large number of neuroscientific studies provide theoretical models that help us analyse not the anthropological constants but the influence of cultural, individual and situational variables on aesthetic experience.

  2. Nuclear Liability, State of the Art

    International Nuclear Information System (INIS)

    Reitsma, S. M. S.

    2010-01-01

    Over fifty years ago states started to introduce legislation protecting the public against the potential magnitude and peculiarity of risks arising from the nuclear energy production. They did so trough a specific liability and compensation regime. Whether legislation was based on national initiatives or, as more frequently, related to international nuclear liability conventions, it was based on a number of principles being applied universally. Furthermore, it at the same time strived for not preventing the development of the nuclear industry because of an unbearable liability. This paper aims at explaining the broad outline of the above legislation, its development since its early years, the state of the art as regards its modernisation as well as the (alleged) problems underlying the delay in its introduction in a number of countries. When dealing with those problems it will be inevitable to touch upon a number of insurance related matters, which, as an insurer I am happy to tell, will lead me to familiar territory.(author).

  3. State-of-the-Art in GPU-Based Large-Scale Volume Visualization

    KAUST Repository

    Beyer, Johanna

    2015-05-01

    This survey gives an overview of the current state of the art in GPU techniques for interactive large-scale volume visualization. Modern techniques in this field have brought about a sea change in how interactive visualization and analysis of giga-, tera- and petabytes of volume data can be enabled on GPUs. In addition to combining the parallel processing power of GPUs with out-of-core methods and data streaming, a major enabler for interactivity is making both the computational and the visualization effort proportional to the amount and resolution of data that is actually visible on screen, i.e. \\'output-sensitive\\' algorithms and system designs. This leads to recent output-sensitive approaches that are \\'ray-guided\\', \\'visualization-driven\\' or \\'display-aware\\'. In this survey, we focus on these characteristics and propose a new categorization of GPU-based large-scale volume visualization techniques based on the notions of actual output-resolution visibility and the current working set of volume bricks-the current subset of data that is minimally required to produce an output image of the desired display resolution. Furthermore, we discuss the differences and similarities of different rendering and data traversal strategies in volume rendering by putting them into a common context-the notion of address translation. For our purposes here, we view parallel (distributed) visualization using clusters as an orthogonal set of techniques that we do not discuss in detail but that can be used in conjunction with what we present in this survey. © 2015 The Eurographics Association and John Wiley & Sons Ltd.

  4. State-of-the-Art in GPU-Based Large-Scale Volume Visualization

    KAUST Repository

    Beyer, Johanna; Hadwiger, Markus; Pfister, Hanspeter

    2015-01-01

    This survey gives an overview of the current state of the art in GPU techniques for interactive large-scale volume visualization. Modern techniques in this field have brought about a sea change in how interactive visualization and analysis of giga-, tera- and petabytes of volume data can be enabled on GPUs. In addition to combining the parallel processing power of GPUs with out-of-core methods and data streaming, a major enabler for interactivity is making both the computational and the visualization effort proportional to the amount and resolution of data that is actually visible on screen, i.e. 'output-sensitive' algorithms and system designs. This leads to recent output-sensitive approaches that are 'ray-guided', 'visualization-driven' or 'display-aware'. In this survey, we focus on these characteristics and propose a new categorization of GPU-based large-scale volume visualization techniques based on the notions of actual output-resolution visibility and the current working set of volume bricks-the current subset of data that is minimally required to produce an output image of the desired display resolution. Furthermore, we discuss the differences and similarities of different rendering and data traversal strategies in volume rendering by putting them into a common context-the notion of address translation. For our purposes here, we view parallel (distributed) visualization using clusters as an orthogonal set of techniques that we do not discuss in detail but that can be used in conjunction with what we present in this survey. © 2015 The Eurographics Association and John Wiley & Sons Ltd.

  5. Chernobyl - state of the art; Chernobyl - o estado da arte

    Energy Technology Data Exchange (ETDEWEB)

    Souza, Daiane C.B. de; Vicente, Roberto; Rostelato, Maria Elisa C.M.; Borges, Jessica F.; Tiezzi, Rodrigo; Peleias Junior, Fernando S.; Souza, Carla D.; Rodrigues, Bruna T.; Benega, Marcos A.G.; Souza, Anderson S. de; Silva, Thais H. da, E-mail: dcsouza@ipen.br, E-mail: rvicente@ipen.br, E-mail: elisaros@ipen.br, E-mail: rtiezzi@ipen.br, E-mail: carladdsouza@yahoo.com.br, E-mail: marcosagbenega@ipen.br, E-mail: bteigarodrigues@gmail.com, E-mail: thaishunk@ipen.br [Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil)

    2014-07-01

    This article aims to analyze what has been done so far in relation to damage caused by the accident and the state of art in Chernobyl, as well as the impact on radiation protection applied safety nuclear power plants. In the first part of the work a data survey was done through a bibliographic review and the in the second part data was collected during a visit, in June 2013 at the crash site, when was observed dose values in the affected areas and the works of repairs that have been made in the sarcophagus and surroundings as well as in official reports available through active international bodies. The main results indicate significant improvements in radiation protection systems.

  6. Paediatric thoracoscopy: State of the art | Van Niekerk | South ...

    African Journals Online (AJOL)

    Many advanced procedures, including lobectomy, repair of tracheo-oesophageal fistula, excision of mediastinal tumours and diaphragmatic hernia repairs, are being done routinely in paediatric surgery centres around the world. This article reviews the state of the art of thoracoscopic surgery in children. The author selected ...

  7. Teaching to Exceed the English Language Arts Common Core State Standards: A Literacy Practices Approach for 6-12 Classrooms

    Science.gov (United States)

    Beach, Richard; Thein, Amanda Haertling; Webb, Allen

    2012-01-01

    As the new English Language Arts Common Core State Standards take hold across the United States, the need grows for pre-service and in-service teachers to be ready to develop curriculum and instruction that addresses their requirements. This timely, thoughtful, and comprehensive text directly meets this need. It delineates a literacy practices and…

  8. State of the Art Review on Theoretical Tribology of Fluid Power Displacement Machines

    DEFF Research Database (Denmark)

    Cerimagic, Remzija; Johansen, Per; Andersen, Torben O.

    2016-01-01

    machines, and also the work done to validate the theoretical models. This review is not a complete historical account, but aim to describe current trends in fluid power displacement machine tribology. The review considers the rheological models used in the theoretical approaches, the modeling...... and wear mechanisms in the lubricating gaps in fluid power machines is confined to simulation models, as experimental treatments of these mechanisms are very difficult. The aim of this paper is a state of the art review on the theoretical work for the design and optimization of fluid power displacement...... of elastohydrodynamic effects, the modeling of thermal effects, and finally the experimental validation of the theoretical models....

  9. State of Theory and Computer Simulations of Radiation Effects in Ceramics

    International Nuclear Information System (INIS)

    Corrales, Louis R.; Weber, William J.

    2003-01-01

    This article presents opinions based on the presentations and discussions at a Workshop on Theory and Computer Simulations of Radiation Effects in Ceramics held in August 2002 at Pacific Northwest National Laboratory in Richland, WA, USA. The workshop was focused on the current state-of-the-art of theory, modeling and simulation of radiation effects in oxide ceramics, directions for future breakthroughs, and creating a close integration with experiment

  10. Visual Culture as a Strategic Approach to Art Production in Education

    DEFF Research Database (Denmark)

    Buhl, Mie

    2005-01-01

    The concept of visual culture challenges tradtitional approaches to art production in education. Art education lacks adequate concepts for understanding contemporary productive processes. The article suggests that the theoretical framework for the productive process should be reconsidered. Visual...... culture as a strategic approach focuses on conditions surrounding viewing rather than on the substance of aesthetic objects A new termonology is needed for use in student and teacher dialogue. The article presents a model for teaching art production bases on a visual culture approach to visual arts...

  11. Secure Enclaves: An Isolation-centric Approach for Creating Secure High Performance Computing Environments

    Energy Technology Data Exchange (ETDEWEB)

    Aderholdt, Ferrol [Tennessee Technological Univ., Cookeville, TN (United States); Caldwell, Blake A. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Hicks, Susan Elaine [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Koch, Scott M. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Naughton, III, Thomas J. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Pelfrey, Daniel S. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Pogge, James R [Tennessee Technological Univ., Cookeville, TN (United States); Scott, Stephen L [Tennessee Technological Univ., Cookeville, TN (United States); Shipman, Galen M. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Sorrillo, Lawrence [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

    2017-01-01

    High performance computing environments are often used for a wide variety of workloads ranging from simulation, data transformation and analysis, and complex workflows to name just a few. These systems may process data at various security levels but in so doing are often enclaved at the highest security posture. This approach places significant restrictions on the users of the system even when processing data at a lower security level and exposes data at higher levels of confidentiality to a much broader population than otherwise necessary. The traditional approach of isolation, while effective in establishing security enclaves poses significant challenges for the use of shared infrastructure in HPC environments. This report details current state-of-the-art in virtualization, reconfigurable network enclaving via Software Defined Networking (SDN), and storage architectures and bridging techniques for creating secure enclaves in HPC environments.

  12. Fabricating biomedical origami: a state-of-the-art review.

    Science.gov (United States)

    Johnson, Meredith; Chen, Yue; Hovet, Sierra; Xu, Sheng; Wood, Bradford; Ren, Hongliang; Tokuda, Junichi; Tse, Zion Tsz Ho

    2017-11-01

    Origami-based biomedical device design is an emerging technology due to its ability to be deployed from a minimal foldable pattern to a larger volume. This paper aims to review state-of-the-art origami structures applied in the medical device field. Publications and reports of origami structure related to medical device design from the past 10 years are reviewed and categorized according to engineering specifications, including the application field, fabrication material, size/volume, deployment method, manufacturability, and advantages. This paper presents an overview of the biomedical applications of devices based on origami structures, including disposable sterilization covers, cardiac catheterization, stent grafts, encapsulation and microsurgery, gastrointestinal microsurgery, laparoscopic surgical grippers, microgrippers, microfluidic devices, and drug delivery. Challenges in terms of materials and fabrication, assembly, modeling and computation design, and clinical adoptability are discussed at the end of this paper to provide guidance for future origami-based design in the medical device field. Concepts from origami can be used to design and develop novel medical devices. Origami-based medical device design is currently progressing, with researchers improving design methods, materials, fabrication techniques, and folding efficiency.

  13. State of the art: alumina ceramics for energy applications

    International Nuclear Information System (INIS)

    Hauth, W.E.; Stoddard, S.D.

    1978-01-01

    Prominent ceramic raw materials and products manufacturers were surveyed to determine the state of the art for alumina ceramic fabrication. This survey emphasized current capabilities and limitations for fabrication of large, high-density, high-purity, complex shapes. Some directions are suggested for future needs and development

  14. Nuclear power plant decommissioning: state-of-the-art review

    International Nuclear Information System (INIS)

    Williams, D.H.

    1984-01-01

    A brief orientation to the state-of-the-art of nuclear power plant decommissioning discusses the related areas of experience, tools and techniques, and planning. There have been 68 nuclear reactor decommissionings to date, including 9 power plants, some of which were mothballed. The picture suggests that the term art may be misapplied since decommissioning is now more of a mature commercial industrial than a research and development endeavor. It also suggests that the nuclear industry has shown foresight by preparing for it before a crisis situation developed. Some of this has already influenced operators of coal power plants, especially where hazardous materials may be involved. 33 references, 1 table

  15. Harvesting Robots for High-value Crops: State-of-the-art Review and Challenges Ahead

    NARCIS (Netherlands)

    Bac, C.W.; Henten, van E.; Hemming, J.; Edan, Y.

    2014-01-01

    This review article analyzes state-of-the-art and future perspectives for harvesting robots in high-value crops. The objectives were to characterize the crop environment relevant for robotic harvesting, to perform a literature review on the state-of-the-art of harvesting robots using quantitative

  16. A computational intelligence approach to the Mars Precision Landing problem

    Science.gov (United States)

    Birge, Brian Kent, III

    Various proposed Mars missions, such as the Mars Sample Return Mission (MRSR) and the Mars Smart Lander (MSL), require precise re-entry terminal position and velocity states. This is to achieve mission objectives including rendezvous with a previous landed mission, or reaching a particular geographic landmark. The current state of the art footprint is in the magnitude of kilometers. For this research a Mars Precision Landing is achieved with a landed footprint of no more than 100 meters, for a set of initial entry conditions representing worst guess dispersions. Obstacles to reducing the landed footprint include trajectory dispersions due to initial atmospheric entry conditions (entry angle, parachute deployment height, etc.), environment (wind, atmospheric density, etc.), parachute deployment dynamics, unavoidable injection error (propagated error from launch on), etc. Weather and atmospheric models have been developed. Three descent scenarios have been examined. First, terminal re-entry is achieved via a ballistic parachute with concurrent thrusting events while on the parachute, followed by a gravity turn. Second, terminal re-entry is achieved via a ballistic parachute followed by gravity turn to hover and then thrust vector to desired location. Third, a guided parafoil approach followed by vectored thrusting to reach terminal velocity is examined. The guided parafoil is determined to be the best architecture. The purpose of this study is to examine the feasibility of using a computational intelligence strategy to facilitate precision planetary re-entry, specifically to take an approach that is somewhat more intuitive and less rigid, and see where it leads. The test problems used for all research are variations on proposed Mars landing mission scenarios developed by NASA. A relatively recent method of evolutionary computation is Particle Swarm Optimization (PSO), which can be considered to be in the same general class as Genetic Algorithms. An improvement over

  17. Hurricane Loss Estimation Models: Opportunities for Improving the State of the Art.

    Science.gov (United States)

    Watson, Charles C., Jr.; Johnson, Mark E.

    2004-11-01

    The results of hurricane loss models are used regularly for multibillion dollar decisions in the insurance and financial services industries. These models are proprietary, and this “black box” nature hinders analysis. The proprietary models produce a wide range of results, often producing loss costs that differ by a ratio of three to one or more. In a study for the state of North Carolina, 324 combinations of loss models were analyzed, based on a combination of nine wind models, four surface friction models, and nine damage models drawn from the published literature in insurance, engineering, and meteorology. These combinations were tested against reported losses from Hurricanes Hugo and Andrew as reported by a major insurance company, as well as storm total losses for additional storms. Annual loss costs were then computed using these 324 combinations of models for both North Carolina and Florida, and compared with publicly available proprietary model results in Florida. The wide range of resulting loss costs for open, scientifically defensible models that perform well against observed losses mirrors the wide range of loss costs computed by the proprietary models currently in use. This outcome may be discouraging for governmental and corporate decision makers relying on this data for policy and investment guidance (due to the high variability across model results), but it also provides guidance for the efforts of future investigations to improve loss models. Although hurricane loss models are true multidisciplinary efforts, involving meteorology, engineering, statistics, and actuarial sciences, the field of meteorology offers the most promising opportunities for improvement of the state of the art.

  18. Efficient method for computing the electronic transport properties of a multiterminal system

    Science.gov (United States)

    Lima, Leandro R. F.; Dusko, Amintor; Lewenkopf, Caio

    2018-04-01

    We present a multiprobe recursive Green's function method to compute the transport properties of mesoscopic systems using the Landauer-Büttiker approach. By introducing an adaptive partition scheme, we map the multiprobe problem into the standard two-probe recursive Green's function method. We apply the method to compute the longitudinal and Hall resistances of a disordered graphene sample, a system of current interest. We show that the performance and accuracy of our method compares very well with other state-of-the-art schemes.

  19. The separation and recycling of actinides: a review of the state of the art

    International Nuclear Information System (INIS)

    McKay, H.A.C.; Sowerby, M.G.; Bustraan, M.; Montizaan, J.; Dalen, A. van; Verkerk, B.

    1977-01-01

    The principal objective of this study is to assess the state of the art of separating the actinides and recycling them to reactors. To this end, the literature has been surveyed, discussions have been held at the contractors' laboratories, AERE, Harwell, UK and ECN, Petten, Netherlands, and visits have been paid to the establishments where relevant work is in progress. The study does not include any new experimental work, but a certain amount of computation has been carried out to support it. A programme of installation of reactors within the European Communities was supplied for the purposes of this study. The prospective generating facilities in GW(e) are given. The situation in the various areas of investigation involved is as follows: nuclear physics: favourable; chemical separations: difficult, but probably feasible; nuclear incineration strategies: little studied so far; fuel and fuel elements containing recycled actinides: little development so far

  20. The Rough Journey into Arts Entrepreneurship: Why Arts Entrepreneurship Education Is Still in Its Infancy in the UK and Germany

    Science.gov (United States)

    Thom, Marco

    2017-01-01

    Purpose: The purpose of this paper is to elucidate the current state of arts entrepreneurship education at higher educational institutions (HEIs) by reviewing the relevant literature and surveying lecturers in Fine Art. Design/methodology/approach: The analysis of fine art students' educational situation at HEIs in the UK and Germany is conducted…

  1. The Consensus of Strategic Consensus: A Study of the State of the Art about the Theme

    Directory of Open Access Journals (Sweden)

    Marcelo Curth

    2018-04-01

    Full Text Available This paper aims to present the state of the art regarding the strategic consensus, emphasizing the approaches and the nature of the research methods used, the results obtained and the future agenda for this theme studies. Analyzing beyond the last four decades of publications, it was understood that relating the strategic consensus only with the performance and strategic levels can be seen as something limited, suggesting the need to bring to the researching field new aspects and backgrounds as innovation, the methods for generating new ideas, the occurrence beyond the Top Management Team level (TMT, among others. Moreover, concludes that the predominant approach the strategic consensus is a process and the methodology used is based on quantitative techniques. As a suggestion for future studies, this study indicates the investigation of situations in which the strategic consensus is not positive.

  2. The state of the art in static and dynamic games

    NARCIS (Netherlands)

    De Giovanni, P.

    2009-01-01

    Purpose - The purpose of this paper is to investigate the state of the art in static and dynamic games (or inter-firm relationships). This research area has changed significantly over the last 25 years through the development of phenomena such as the supply chain and the progressive overcoming of

  3. The Beijing Olympics and the art of nation-state maintenance

    NARCIS (Netherlands)

    de Kloet, J.; Pak Lei Chong, G.; Liu, W.

    2008-01-01

    This article maps out how different actors are involved in the promotion and mediation of the Olympics. It looks at the roles of, first, the nation-state, through an analysis of the promotional materials; second, the art world and global companies, through an analysis of the touring exhibition

  4. A Snapshot of State Policies for Arts Education

    Science.gov (United States)

    Arts Education Partnership, 2014

    2014-01-01

    It has been said that while history shapes the hand a state is dealt, public policy determines how the hand is played. State policy for K-12 education--and, by extension, for arts education--is shaped through the actions of various state governmental entities--governors, legislatures, courts, and commissioners and boards of education--in response…

  5. Base technology development enhances state-of-the-art in meeting performance requirements

    International Nuclear Information System (INIS)

    Freedman, J.M.; Allen, G.C. Jr.; Luna, R.E.

    1987-01-01

    Sandia National Laboratories (SNL) has responsibility to the United States Department of Energy (DOE) for baseline technology to support the design of radioactive material transportation packages. To fulfill this responsibility, SNL works with industry, government agencies, and national laboratories to identify and develop state-of-the-art technology required to design and test safe, cost-effective radioactive materials packages. Principal elements of the base technology program include: 1) analysis techniques, 2) testing, 3) subsystem and component development, 4) packaging systems development support, and 5) technical support for policy development. These program elements support a systems approach for meeting performance requirements and assure that there is a sound underlying technical basis for both transportation packaging design and associated policy decisions. Highlights from the base technology program included in this paper are testing, design and analysis methods, advanced materials, risk assessment and logistics models, and transportation package support

  6. Sensors and Technologies in Spain: State-of-the-Art

    Directory of Open Access Journals (Sweden)

    Gonzalo Pajares

    2014-08-01

    Full Text Available The aim of this special issue was to provide a comprehensive view on the state-of-the-art sensor technology in Spain. Different problems cause the appearance and development of new sensor technologies and vice versa, the emergence of new sensors facilitates the solution of existing real problems. [...

  7. State of the art Advanced Driver Assistance Systems (ADAS).

    NARCIS (Netherlands)

    OEI, H.-L.

    2017-01-01

    An overview of state-of-the-art ADA Advanced Driver Assistance systems is given. First a main structuring system for the ADA systems is presented, needed for purposes of relevancy, and consistency : the three phases in the accident process, i.e. pre-crash, crash and post-crash; the driving task at

  8. A state-of-the art on decommissioning of nuclear facilities in Japan

    International Nuclear Information System (INIS)

    Park, Seung Kook; Kim, Hee Reyoung; Chung, Un Soo; Jung, Ki Jung

    2002-05-01

    While proceeding the KRR-1 and 2 decommissioning project, we are carried out study for the state of the art on decommissioning of nuclear facilities in Japan. Also, we are studied for the research reactors and commercial power plant that has the object of decommissioning, and for the government and the organization related on decommissioning operation. We are investigated for decommissioning activities of nuclear facilities achieved by JAERI, and collected the information and data for decommissioning techniques and computational system through the JPDR(Japan Power Demonstration Reactor) decommissioning activities. Such techniques are applying for Tokai Power Station began the decommissioning project from last year, and for Fugen Nuclear Power Station to be planned the decommissioning from 2003. Recent techniques for decommissioning was acquired by direct contact. The status of the treatment for decommissioning waste and the disposal facility for the very low-level radioactive concrete wastes was grasped

  9. Teacher Evaluation in the Arts Disciplines: Three State Perspectives

    Science.gov (United States)

    Gates, Karol; Hansen, Deb; Tuttle, Lynn

    2015-01-01

    The purpose of this report is to provide insight into how state departments are implementing legislative requirements for educator evaluation, particularly the specific circumstances states encounter around arts education. Spotlights on Delaware, a first-round recipient of Race to the Top funding, and Colorado and Arizona, third-round recipients,…

  10. Wind turbines and seismic hazard: a state-of-the-art review

    DEFF Research Database (Denmark)

    Katsanos, Evangelos; Thöns, Sebastian; Georgakis, Christos T.

    2016-01-01

    , India, Southern Europe and East Asia) highlight the necessity for thorough consideration of the seismic implications on these energy harnessing systems. Along these lines, this state-of-the-art paper presents a comparative survey of the published research relevant to the seismic analysis, design......Wind energy is a rapidly growing field of renewable energy, and as such, intensive scientific and societal interest has been already attracted. Research on wind turbine structures has been mostly focused on the structural analysis, design and/or assessment of wind turbines mainly against normal...... and assessment of wind turbines. Based on numerical simulation, either deterministic or probabilistic approaches are reviewed, because they have been adopted to investigate the sensitivity of wind turbines’ structural capacity and reliability in earthquake-induced loading. The relevance of seismic hazard...

  11. Art in the Digital Age

    Science.gov (United States)

    2016-01-01

    The genre ofcomputer art” began in the 1950s, when long exposure photography was used to capture images created by an oscilloscope manipulating electronic waves on a small fluorescent screen. Through the 1960s, most works of computer art were created using plotters and impact printers by the scientists and engineers who had access to emerging computing technology. By the 1970s, artists were learning to program, and some universities began to integrate computers into the fine arts curriculum. The widespread adoption of computers and the availability of off-the-shelf paint programs in the 1980s brought computer art to the masses. At the same time, computer graphics and special effects were beginning their takeover of the entertainment industry through Hollywood films, TV shows, and video games. By the 1990s, the term computer art was fading, and computers were becoming a mainstream part of arts and entertainment.

  12. Results of the Italian neuART project

    International Nuclear Information System (INIS)

    Re, A; Albertin, F; Brancaccio, R; Cotto, G; Dughera, G; Durisi, E; Ferrarese, W; Lo Giudice, A; Mereu, P; Mila, G; Pastrone, N; Prino, F; Bortolin, C; Corsi, J; Buscaglia, P; Giovagnoli, A; Grassi, N; Nervo, M; Gambaccini, M; Petrucci, F

    2012-01-01

    The neu A RT project aims at developing state of the art transmission imaging and computed tomography techniques, applied to art objects, by using neutrons as well as more conventional X-rays. In this paper a facility for digital X-ray radiography of large area paintings on canvas or wooden panels and for the X-ray tomography of large size wooden artifacts, recently installed in a protected area, is presented. The results of a K-edge radiography facility that will soon be installed in the same area are also shown.

  13. Geophysics of Geothermal Areas: State of the Art and Future Development

    Science.gov (United States)

    Mabey, Don R.

    In May 1980 a workshop organized by the Advanced School of Geophysics of the Ettore Majorana Center for Scientific Culture was held in Erice, Italy. The purpose was to present the state of the art and future development of geophysics as related to exploration for geothermal resources and the environmental impact of the development of geothermal systems. The workshop was addressed to “younger researchers working in scientific institutions and in public or private agencies and who are particularly interested in these aspects of the energy problem.” Fourteen formal lectures were presented to the workshop. This volume contains papers based on 10 of these lectures with a preface, forward, and introduction by the editors. The ten papers are “Heat Transfer in Geothermal Areas,” “Interpretation of Conductive Heat Flow Anomalies,” “Deep Electromagnetic Soundings in Geothermal Exploration,” “A Computation Method for dc Geoelectric Fields,” “Measurement of Ground Deformation in Geothermal Areas,” “Active Seismic Methods in Geothermal Exploration,” “The Role of Geophysical Investigations in the Discovery of the Latera Geothermal Field,” “Geothermal Resources Exploration in the European Community: The Geophysical Case,” “Activity Performed by AGIP (ENI Group) in the Field of Geothermal Energy,” and “Geothermal Exploration in the Western United States.” Six of the authors are from Italy, and one each is from Iceland, the Netherlands, West Germany, and the United States. All of the papers are in English.

  14. The Brazilian state-of-the-art of hydrolysis; Estado da arte da hidrolise no Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Carioca, Jose Osvaldo Beserra; Paula, Haroldo Cesar Beserra de; Lal Arora, Harbans; Selvam, P.V. Pannir [Nucleo de Fontes Nao-Convencionais de Energia, Fortaleza, CE, (Brazil)

    1988-12-31

    This paper presents a study of the state-of-the-art of technologies developed for acid and enzymatic hydrolysis of lignin and cellulose materials in Brazil. The information collected leads us to conclude that Brazil has achieved a high level of technological development. However, the industrial projects for production of alcohol from cassava have not proved successful due mainly to lack of agricultural experience and its low productivity. (author) 26 refs., 13 figs., 2 tabs.

  15. State of the art of solid state dosimetry; Estado da arte em dosimetria do estado solido

    Energy Technology Data Exchange (ETDEWEB)

    Souza, Susana O., E-mail: sosouza@ufs.br [Universidade Federal de Sergipe (UFS), Sao Cristovao, SE (Brazil); Yamamoto, Takayoshi [Radioisotope Research Center, Osaka University (Japan); D' Errico, Francesco, E-mail: francesco.derrico@yale.edu [Yale University, School of Medicine, CT (United States)

    2014-07-01

    Passive solid-state detectors still dominate the personal dosimetry field. This article provides state of the art in this field and summarizes the most recent works presented on TL, OSL and RPL during the 17th International Conference on Solid State Dosimetry held in Recife in September 2013. The Article contains in particular the techniques Thermoluminescence (TL), Optically Stimulated Luminescence (OSL), radio photoluminescence (RPL). Thermoluminescence has the biggest advantage of the wide availability of commercial materials for dosimetry, and the nature tissue-equivalent of several of these materials. The limitation of the TL dosimetry presents fading luminance signal and the need for high temperatures to obtain the signal. The Optically Stimulated Luminescence has the advantages of high sensitivity, the possibility of multiple reading, while its limit is the need to use response compensating filters in addition to the high cost of equipment and dosimeters still restricted very few options trading . The radio photoluminescence has a reading that is completely non-destructive, but their dosimeters present lack of tissue-equivalent and a high cost. Presents the details of the techniques and the advantages and limitations of each of these will be discussed.

  16. Attractive PHHP interactions revealed by state-of-the-art ab initio calculations.

    Science.gov (United States)

    Yourdkhani, Sirous; Jabłoński, Mirosław; Echeverría, Jorge

    2017-10-25

    We report in this work a combined structural and state-of-the-art computational study of homopolar P-HH-P intermolecular contacts. Database surveys have shown the abundance of such surprisingly unexplored contacts, which are usually accompanied by other weak interactions in the solid state. By means of a detailed theoretical study utilizing SAPT(DFT), MP2, SCS-MP2, MP2C and CCSD(T) methods and both aug-cc-pVXZ and aug-cc-pCVXZ (X = D, T, Q, 5) basis sets as well as extrapolation to the CBS limit, we have shown that P-HH-P contacts are indeed attractive and considerably strong. SAPT(DFT) calculations have revealed the dispersive nature of the P-HH-P interaction with only minor contribution of the inductive term, whereas the first-order electrostatic term is clearly overbalanced by the first-order exchange energy. In general the computed interaction energies follow the trend: E ≈ E < E < E. Our results have also shown that the aug-cc-pVDZ (or aug-cc-pCVDZ) basis set is not yet well balanced and that the second-order dispersion energy term is the slowest converging among all SAPT(DFT) energy components. Compared to aug-cc-pVXZ basis sets, their core-correlation counterparts have a modest influence on all supermolecular interaction energies and a negligible influence on both the SAPT(DFT) interaction energy and its components.

  17. An Interactive Approach to Learning and Teaching in Visual Arts Education

    Science.gov (United States)

    Tomljenovic, Zlata

    2015-01-01

    The present research focuses on modernising the approach to learning and teaching the visual arts in teaching practice, as well as examining the performance of an interactive approach to learning and teaching in visual arts classes with the use of a combination of general and specific (visual arts) teaching methods. The study uses quantitative…

  18. Ecological effects assessment: requirements vs state-of-the-art

    International Nuclear Information System (INIS)

    McKenzie, D.H.; Thomas, J.M.; Eberhardt, L.L.

    1981-05-01

    Concerns for environmental quality, the ecologist's understanding of ecosystems, and the ability to quantitatively sample and evaluate hypotheses have contributed to current requirements and the state-of-the-art in ecological effects assessments in refard to nuclear power plants. The current cooling system approaches, data collection programs, and ecological effects assessments reflect these contributions. Over a decade of experience provides the basis for a timely review and evaluation of current proactice. The magnitude of economic and environmental resources being committed to cooling system alternatives mandates that the decision-making process result in as many optimal choices as possible. In addition, the resources being devoted to environmental data collection and integration provide considerable motivation for providing meaningful input to the decision-making process. It is maintained that the input should be as quantitative and as free from subjective content as is reasonably possible. An alternative viewpoint suggests that the past several decades of experience be considered but a first step, and the current task to be one of designing a second step

  19. Supplier selection problem: A state-of-the-art review

    Directory of Open Access Journals (Sweden)

    Nilesh R. Ware

    2012-08-01

    Full Text Available In the global competitiveness and growing market environment, “Actual competition is not between firms against firm, than supplier against supplier”. Globally in the fastest market development world gets closer and closer. Consumers prefer fast delivery, economical product, excellent service and high quality product with desired service level. For successful management of this supply chain, supplier considered as the base source for all processes. Therefore, an efficient supplier selection and evaluation process needs to be incorporate. The main purpose of this paper is to provide an extensive state-of-the-art literature review and critique of the studies related to various aspects of supplier selection problem over the past two decades. Research papers appearing in the reputed and leading international journals from 1991 to 2011 are gathered and analyzed. Primary focus is given on more than 200 published and unpublished works. It has been referred extensively to carry out state-of-the-art review for supplier selection problem. Finally, paper provides future perspective based on current research trends available in the published literature.

  20. State of art in FE-based fuel performance codes

    International Nuclear Information System (INIS)

    Kim, Hyo Chan; Yang, Yong Sik; Kim, Dae Ho; Bang, Je Geon; Kim, Sun Ki; Koo, Yang Hyun

    2013-01-01

    Finite element (FE) method that is reliable and proven solution in mechanical field has been introduced into fuel performance codes for multidimensional analysis. The present state of the art in numerical simulation of FE-based fuel performance predominantly involves 2-D axisymmetric model and 3-D volumetric model. The FRAPCON and FRAPTRAN own 1.5-D and 2-D FE model to simulate PCMI and cladding ballooning. In 2-D simulation, the FALCON code, developed by EPRI, is a 2-D (R-Z and R-θ) fully thermal-mechanically coupled steady-state and transient FE-based fuel behavior code. The French codes TOUTATIS and ALCYONE which are 3-D, and typically used to investigate localized behavior. In 2008, the Idaho National Laboratory (INL) has been developing multidimensional (2-D and 3-D) nuclear fuel performance code called BISON. In this paper, the current state of FE-based fuel performance code and their models are presented. Based on investigation into the codes, requirements and direction of development for new FE-based fuel performance code can be discussed. Based on comparison of models in FE-based fuel performance code, status of art in the codes can be discussed. A new FE-based fuel performance code should include typical pellet and cladding models which all codes own. In particular, specified pellet and cladding model such as gaseous swelling and high burnup structure (HBS) model should be developed to improve accuracy of code as well as consider AC condition. To reduce computation cost, the approximated gap and the optimized contact model should be also developed. Nuclear fuel operates in an extreme environment that induces complex multiphysics phenomena, occurring over distances ranging from inter-atomic spacing to meters, and times scales ranging from microseconds to years. This multiphysics behavior is often tightly coupled, a well known example being the thermomechanical behavior. Adding to this complexity, important aspects of fuel behavior are inherently

  1. Art as behaviour--an ethological approach to visual and verbal art, music and architecture.

    Science.gov (United States)

    Sütterlin, Christa; Schiefenhövel, Wulf; Lehmann, Christian; Forster, Johanna; Apfelauer, Gerhard

    2014-01-01

    In recent years, the fine arts, architecture, music and literature have increasingly been examined from the vantage point of human ethology and evolutionary psychology. In 2011 the authors formed the research group 'Ethology of the Arts' concentrating on the evolution and biology of perception and behaviour. These novel approaches aim at a better understanding of the various facets represented by the arts by taking into focus possible phylogenetic adaptations, which have shaped the artistic capacities of our ancestors. Rather than culture specificity, which is stressed e.g. by cultural anthropology and numerous other disciplines, universal human tendencies to perceive, feel, think and behave are postulated. Artistic expressive behaviour is understood as an integral part of the human condition, whether expressed in ritual, visual, verbal or musical art. The Ethology of the Arts-group's research focuses on visual and verbal art, music and built environment/architecture and is designed to contribute to the incipient interdisciplinarity in the field of evolutionary art research.

  2. Statistical dynamic image reconstruction in state-of-the-art high-resolution PET

    International Nuclear Information System (INIS)

    Rahmim, Arman; Cheng, J-C; Blinder, Stephan; Camborde, Maurie-Laure; Sossi, Vesna

    2005-01-01

    Modern high-resolution PET is now more than ever in need of scrutiny into the nature and limitations of the imaging modality itself as well as image reconstruction techniques. In this work, we have reviewed, analysed and addressed the following three considerations within the particular context of state-of-the-art dynamic PET imaging: (i) the typical average numbers of events per line-of-response (LOR) are now (much) less than unity (ii) due to the physical and biological decay of the activity distribution, one requires robust and efficient reconstruction algorithms applicable to a wide range of statistics and (iii) the computational considerations in dynamic imaging are much enhanced (i.e., more frames to be stored and reconstructed). Within the framework of statistical image reconstruction, we have argued theoretically and shown experimentally that the sinogram non-negativity constraint (when using the delayed-coincidence and/or scatter-subtraction techniques) is especially expected to result in an overestimation bias. Subsequently, two schemes are considered: (a) subtraction techniques in which an image non-negativity constraint has been imposed and (b) implementation of random and scatter estimates inside the reconstruction algorithms, thus enabling direct processing of Poisson-distributed prompts. Both techniques are able to remove the aforementioned bias, while the latter, being better conditioned theoretically, is able to exhibit superior noise characteristics. We have also elaborated upon and verified the applicability of the accelerated list-mode image reconstruction method as a powerful solution for accurate, robust and efficient dynamic reconstructions of high-resolution data (as well as a number of additional benefits in the context of state-of-the-art PET)

  3. The backstroke swimming start: state of the art.

    Science.gov (United States)

    de Jesus, Karla; de Jesus, Kelly; Fernandes, Ricardo J; Vilas-Boas, João Paulo; Sanders, Ross

    2014-09-29

    As sprint swimming events can be decided by margins as small as .01 s, thus, an effective start is essential. This study reviews and discusses the 'state of the art' literature regarding backstroke start biomechanics from 23 documents. These included two swimming specific publications, eight peer-reviewed journal articles, three from the Biomechanics and Medicine in Swimming Congress series, eight from the International Society of Biomechanics in Sports Conference Proceedings, one from a Biomechanics Congress and one academic (PhD) thesis. The studies had diverse aims, including swimmers' proficiency levels and data collection settings. There was no single consensus for defining phase descriptions; and kinematics, kinetics and EMG approaches were implemented in laboratory settings. However, researchers face great challenges in improving methods of quantifying valid, reliable and accurate data between laboratory and competition conditions. For example, starting time was defined from the starting signal to distances as disparate as ∼5 m to 22.86 m in several studies. Due to recent rule changes, some of the research outcomes now refer to obsolete backstroke start techniques, and only a few studies considered the actual international rules. This literature review indicated that further research is required, in both laboratory and competition settings focusing on the combined influences of the current rules and block configuration on backstroke starting performances.

  4. Some Aspects of the State-of-the-Arts in Biomedical Science ...

    African Journals Online (AJOL)

    Summary: In the biomedical sciences, there is need to generate solutions for Africa's health and economic problems through the impact of university research. To guide organizational transformation, the author here presents some aspects of the state-of-the-arts of biomedical science research in advanced countries using a ...

  5. Management and prevention of chronic obstructive pulmonary disease exacerbations: a state of the art review

    Directory of Open Access Journals (Sweden)

    Wedzicha Jadwiga A

    2009-08-01

    Full Text Available Abstract Exacerbations of chronic obstructive pulmonary disease (COPD are important events in the natural history of this prevalent and devastating condition. This review provides a concise, state of the art summary on prevention and management of exacerbations. Considerable new data underpins evidence in support of many preventative interventions, pharmacological and non-pharmacological, that are now available. Challenges remain in developing new approaches, and delivering those that already exist to the right patient at the right time. Management of an exacerbation remains stepwise according to clinical severity, but there is now additional focus on addressing comorbidities and taking the opportunity at acute events to optimise preventative strategies for the future. Ultimately, exacerbations are heterogeneous events in a heterogeneous disease, and an individualised approach is paramount.

  6. State-of-the-Art in Open Courseware Initiatives Worldwide

    Science.gov (United States)

    Vladoiu, Monica

    2011-01-01

    We survey here the state-of-the-art in open courseware initiatives worldwide. First, the MIT OpenCourseWare project is overviewed, as it has been the real starting point of the OCW movement. Usually, open courseware refers to a free and open digital publication of high quality university level educational materials that are organized as courses,…

  7. CMOS image sensors: State-of-the-art

    Science.gov (United States)

    Theuwissen, Albert J. P.

    2008-09-01

    This paper gives an overview of the state-of-the-art of CMOS image sensors. The main focus is put on the shrinkage of the pixels : what is the effect on the performance characteristics of the imagers and on the various physical parameters of the camera ? How is the CMOS pixel architecture optimized to cope with the negative performance effects of the ever-shrinking pixel size ? On the other hand, the smaller dimensions in CMOS technology allow further integration on column level and even on pixel level. This will make CMOS imagers even smarter that they are already.

  8. Management of infected pancreatic necrosis: state of the art

    Directory of Open Access Journals (Sweden)

    Roberto Rasslan

    Full Text Available ABSTRACT Pancreatic necrosis occurs in 15% of acute pancreatitis. The presence of infection is the most important factor in the evolution of pancreatitis. The diagnosis of infection is still challenging. Mortality in infected necrosis is 20%; in the presence of organic dysfunction, mortality reaches 60%. In the last three decades, there has been a real revolution in the treatment of infected pancreatic necrosis. However, the challenges persist and there are many unsolved questions: antibiotic treatment alone, tomography-guided percutaneous drainage, endoscopic drainage, video-assisted extraperitoneal debridement, extraperitoneal access, open necrosectomy? A step up approach has been proposed, beginning with less invasive procedures and reserving the operative intervention for patients in which the previous procedure did not solve the problem definitively. Indication and timing of the intervention should be determined by the clinical course. Ideally, the intervention should be done only after the fourth week of evolution, when it is observed a better delimitation of necrosis. Treatment should be individualized. There is no procedure that should be the first and best option for all patients. The objective of this work is to critically review the current state of the art of the treatment of infected pancreatic necrosis.

  9. State-of-the-art Versus Time-triggered Object Tracking in Advanced Driver Assistance Systems

    Directory of Open Access Journals (Sweden)

    Moritz Koplin

    2013-04-01

    Full Text Available Most state-of-the-art driver assistance systems cannot guarantee that real-time images of object states are updated within a given time interval, because the object state observations are typically sampled by uncontrolled sensors and transmitted via an indeterministic bus system such as CAN. To overcome this shortcoming, a paradigm shift toward time-triggered advanced driver assistance systems based on a deterministic bus system, such as FlexRay, is under discussion. In order to prove the feasibility of this paradigm shift, this paper develops different models of a state-of-the-art and a time-triggered advanced driver assistance system based on multi-sensor object tracking and compares them with regard to their mean performance. The results show that while the state-of-the-art model is advantageous in scenarios with low process noise, it is outmatched by the time-triggered model in the case of high process noise, i.e., in complex situations with high dynamic.

  10. Can Computers Be Used for Whole Language Approaches to Reading and Language Arts?

    Science.gov (United States)

    Balajthy, Ernest

    Holistic approaches to the teaching of reading and writing, most notably the Whole Language movement, reject the philosophy that language skills can be taught. Instead, holistic teachers emphasize process, and they structure the students' classroom activities to be rich in language experience. Computers can be used as tools for whole language…

  11. The self-consistent multiparticle-multihole configuration mixing. Motivations, state of the art and perspectives

    Energy Technology Data Exchange (ETDEWEB)

    Pillet, N.; Dupuis, M.; Hupin, G.; Berger, J.F. [DAM, CEA, Arpajon (France); Robin, C. [Western Michigan University, Department of Physics, Kalamazoo, MI (United States)

    2017-03-15

    The main objective of this paper is to review the state of the art of the multiparticle-multihole configuration mixing approach which was proposed and implemented using the Gogny interaction ∝ 10 years ago. Various theoretical aspects are re-analyzed when a Hamiltonian description is chosen: the link with exact many-body theories, the impact of truncations in the multiconfigurational space, the importance of defining single-particle orbitals which are consistent with the correlations introduced in the many-body wave function, the role of the self-consistency, and more practically the numerical convergence algorithm. Several applications done with the phenomenological effective Gogny interaction are discussed. Finally, future directions to extend and generalize the method are discussed. (orig.)

  12. The self-consistent multiparticle-multihole configuration mixing. Motivations, state of the art and perspectives

    Science.gov (United States)

    Pillet, N.; Robin, C.; Dupuis, M.; Hupin, G.; Berger, J.-F.

    2017-03-01

    The main objective of this paper is to review the state of the art of the multiparticle-multihole configuration mixing approach which was proposed and implemented using the Gogny interaction ˜ 10 years ago. Various theoretical aspects are re-analyzed when a Hamiltonian description is chosen: the link with exact many-body theories, the impact of truncations in the multiconfigurational space, the importance of defining single-particle orbitals which are consistent with the correlations introduced in the many-body wave function, the role of the self-consistency, and more practically the numerical convergence algorithm. Several applications done with the phenomenological effective Gogny interaction are discussed. Finally, future directions to extend and generalize the method are discussed.

  13. The self-consistent multiparticle-multihole configuration mixing. Motivations, state of the art and perspectives

    International Nuclear Information System (INIS)

    Pillet, N.; Dupuis, M.; Hupin, G.; Berger, J.F.; Robin, C.

    2017-01-01

    The main objective of this paper is to review the state of the art of the multiparticle-multihole configuration mixing approach which was proposed and implemented using the Gogny interaction ∝ 10 years ago. Various theoretical aspects are re-analyzed when a Hamiltonian description is chosen: the link with exact many-body theories, the impact of truncations in the multiconfigurational space, the importance of defining single-particle orbitals which are consistent with the correlations introduced in the many-body wave function, the role of the self-consistency, and more practically the numerical convergence algorithm. Several applications done with the phenomenological effective Gogny interaction are discussed. Finally, future directions to extend and generalize the method are discussed. (orig.)

  14. State of the art on the probabilistic safety assessment (P.S.A.)

    International Nuclear Information System (INIS)

    Devictor, N.; Bassi, A.; Saignes, P.; Bertrand, F.

    2008-01-01

    The use of Probabilistic Safety Assessment (PSA) is internationally increasing as a means of assessing and improving the safety of nuclear and non-nuclear facilities. To support the development of a competence on Probabilistic Safety Assessment, a set of states of the art regarding these tools and their use has been made between 2001 and 2005, in particular on the following topics: - Definition of the PSA of level 1, 2 and 3; - Use of PSA in support to design and operation of nuclear plants (risk-informed applications); - Applications to Non Reactor Nuclear Facilities. The report compiled in a single document these states of the art in order to ensure a broader use; this work has been done in the frame of the Project 'Reliability and Safety of Nuclear Facility' of the Nuclear Development and Innovation Division of the Nuclear Energy Division. As some of these states of the art have been made in support to exchanges with international partners and were written in English, a section of this document is written in English. This work is now applied concretely in support to the design of 4. Generation nuclear systems as Sodium-cooled Fast Reactors and especially Gas-cooled Fast Reactor, that have been the subject of communications during the conferences ANS (Annual Meeting 2007), PSA'08, ICCAP'08 and in the journal Science and Technology of Nuclear Installations. (authors)

  15. Simulation of pollutants transfer in soils - State-of-the-art. State-of-the-art of the simulation of pollutants transfer in soils - Final report

    International Nuclear Information System (INIS)

    Bourgois, J.; Vaillant, Herve; Moszkowicz, P.; Alimi Ichola, Ibrahim; Foret, Suzanne

    1997-02-01

    Industrial companies use and produce numerous substances which can induce a pollution of our environment and especially of soil and groundwater. Thus, it's necessary to estimate the risk of an environmental impact from an accidental or chronic, real or potential pollution. Modelling, which allow the simulation of pollutant migration, can be used as a decision support system, either for the pollution control and prevention of the resource, or for the monitoring of the remediation of polluted sites. In the first part of this study, we established a state of the art on modelling of pollutant migration in soils. In the second part, we focused on the main simulation tools currently available on the market, and on the main agencies or laboratories working on this subject, especially in France. At the end of this study, we drew some conclusions concerning modelling of pollutant migration in soils and the main points which will form the subject of further studies: - sensitivity analysis of model to input parameters and ranking of the main parameters, - achievement of a database on the state of the art of the results on modelling realized on case studies, - development of a mobility indicator of pollutant in soil, - application field and relevance of the models. (authors)

  16. An Interdisciplinary Approach for Understanding Artworks: The Role of Music in Visual Arts Education

    Science.gov (United States)

    Pavlou, Victoria; Athansiou, Georgina

    2014-01-01

    In a world that is becoming increasingly more visual, there is a greater need to educate children to better understand images. A school subject that deals directly with image understanding is visual arts. This article discusses an interdisciplinary approach to promote art understanding, within a multimodal environment that combines art and music.…

  17. An Interactive Approach to Learning and Teaching in Visual Arts Education

    Directory of Open Access Journals (Sweden)

    Zlata Tomljenović

    2015-09-01

    Full Text Available The present research focuses on modernising the approach to learning and teaching the visual arts in teaching practice, as well as examining the performance of an interactive approach to learning and teaching in visual arts classes with the use of a combination of general and specific (visual arts teaching methods. The study uses quantitative analysis of data on the basis of results obtained from a pedagogical experiment. The subjects of the research were 285 second- and fourth-grade students from four primary schools in the city of Rijeka, Croatia. Paintings made by the students in the initial and final stage of the pedagogical experiment were evaluated. The research results confirmed the hypotheses about the positive effect of interactive approaches to learning and teaching on the following variables: (1 knowledge and understanding of visual arts terms, (2 abilities and skills in the use of art materials and techniques within the framework of planned painting tasks, and (3 creativity in solving visual arts problems. The research results can help shape an optimised model for the planning and performance of visual arts education, and provide guidelines for planning professional development and the further professional education of teachers, with the aim of establishing more efficient learning and teaching of the visual arts in primary school.

  18. Text mining for adverse drug events: the promise, challenges, and state of the art.

    Science.gov (United States)

    Harpaz, Rave; Callahan, Alison; Tamang, Suzanne; Low, Yen; Odgers, David; Finlayson, Sam; Jung, Kenneth; LePendu, Paea; Shah, Nigam H

    2014-10-01

    Text mining is the computational process of extracting meaningful information from large amounts of unstructured text. It is emerging as a tool to leverage underutilized data sources that can improve pharmacovigilance, including the objective of adverse drug event (ADE) detection and assessment. This article provides an overview of recent advances in pharmacovigilance driven by the application of text mining, and discusses several data sources-such as biomedical literature, clinical narratives, product labeling, social media, and Web search logs-that are amenable to text mining for pharmacovigilance. Given the state of the art, it appears text mining can be applied to extract useful ADE-related information from multiple textual sources. Nonetheless, further research is required to address remaining technical challenges associated with the text mining methodologies, and to conclusively determine the relative contribution of each textual source to improving pharmacovigilance.

  19. Augmented Reality and Mobile Learning: The State of the Art

    Science.gov (United States)

    FitzGerald, Elizabeth; Ferguson, Rebecca; Adams, Anne; Gaved, Mark; Mor, Yishay; Thomas, Rhodri

    2013-01-01

    In this paper, the authors examine the state of the art in augmented reality (AR) for mobile learning. Previous work in the field of mobile learning has included AR as a component of a wider toolkit but little has been done to discuss the phenomenon in detail or to examine in a balanced fashion its potential for learning, identifying both positive…

  20. Introduction of computers in education : state of the art in eight countries

    NARCIS (Netherlands)

    Plomp, T.; Pelgrum, W.J.

    1991-01-01

    In 1989, the IEA Computers in Education study collected data on computer use in elementary, lower- and upper secondary education in 22 countries. This paper presents some preliminary results for lower secondary education in Belgium-Flemish, Belgium-French, France, Greece, Japan, Luxembourg, The

  1. Electron beam melting state-of-the-art 1984

    International Nuclear Information System (INIS)

    Bakish, R.

    1984-01-01

    In 1984 electron beam melting and refining appear poised for an important new growth phase. The driving force for this phase is improved production economics made possible by technological advances. There is also a new and exciting growth application for electron beam melting: its use for surface properties beneficiation. This article is based in part on the content of the Conference on Electron Beam Melting and Refining, The State-of-the-Art 1983, held in November 1983 in Reno, Nevada

  2. Conference on "State of the Art in Global Optimization : Computational Methods and Applications"

    CERN Document Server

    Pardalos, P

    1996-01-01

    Optimization problems abound in most fields of science, engineering, and technology. In many of these problems it is necessary to compute the global optimum (or a good approximation) of a multivariable function. The variables that define the function to be optimized can be continuous and/or discrete and, in addition, many times satisfy certain constraints. Global optimization problems belong to the complexity class of NP-hard prob­ lems. Such problems are very difficult to solve. Traditional descent optimization algorithms based on local information are not adequate for solving these problems. In most cases of practical interest the number of local optima increases, on the aver­ age, exponentially with the size of the problem (number of variables). Furthermore, most of the traditional approaches fail to escape from a local optimum in order to continue the search for the global solution. Global optimization has received a lot of attention in the past ten years, due to the success of new algorithms for solvin...

  3. Digital Breast Tomosynthesis: State of the Art

    Science.gov (United States)

    Vedantham, Srinivasan; Vijayaraghavan, Gopal R.; Kopans, Daniel B.

    2015-01-01

    This topical review on digital breast tomosynthesis (DBT) is provided with the intent of describing the state of the art in terms of technology, results from recent clinical studies, advanced applications, and ongoing efforts to develop multimodality imaging systems that include DBT. Particular emphasis is placed on clinical studies. The observations of increase in cancer detection rates, particularly for invasive cancers, and the reduction in false-positive rates with DBT in prospective trials indicate its benefit for breast cancer screening. Retrospective multireader multicase studies show either noninferiority or superiority of DBT compared with mammography. Methods to curtail radiation dose are of importance. © RSNA, 2015 PMID:26599926

  4. Whole abdomen irradiation in epithelial ovarian cancer - state of the art

    International Nuclear Information System (INIS)

    Gocheva, L.

    2009-01-01

    Epithelial ovarian cancer (OC) as a malignancy which poses multiple challenges has led to growing attention and concern during recent years. The not very noteworthy treatment results achieved during the last three decades with contemporary chemotherapeutic schemes have led to the need for research and development of new therapeutic approaches, as well as to a resurgence of interest in radiotherapy (RT) as part of a combined modality approach and as salvage therapy for patients with small volume persistent disease after primary cytoreductive surgery and chemotherapy. This article reviews the state of the art of whole abdomen irradiation (WAI) (excluding the moving strip field technique) as part of the complex treatment of epithelial OC. The prognostic factors and risk groups of epithelial OC are discussed as indicators for WAI, giving in detail the applied treatment modalities, fractionation and total doses. Toxicity and second primary malignancies following WAI are analyzed. The clinical experience accumulated during the last decades, as adjuvant, consolidative, salvage and palliative WAI in combined treatment of epithelial OC, is presented. Current issues in the radiotherapeutic management are discussed along with ideas for future clinical research directions. (author)

  5. State of the art-hydraulic yaw systems for wind turbines

    DEFF Research Database (Denmark)

    Stubkier, Søren; Pedersen, Henrik C.; Andersen, Torben Ole

    2011-01-01

    This paper addresses the yawing systems of Horizontal Axis Wind Turbines (HAWT’s). HAWT’s represents close to all of the commercial large wind turbines sold today and must be considered state-of-the art within wind turbine technology. Two choices exists when considering components for the active ...

  6. Intracytoplasmic sperm injection: state of the art in humans.

    Science.gov (United States)

    Palermo, G D; O'Neill, C L; Chow, S; Cheung, S; Parrella, A; Pereira, N; Rosenwaks, Z

    2017-12-01

    Among infertile couples, 25% involve both male and female factors, while male factor alone accounts for another 25% due to oligo-, astheno-, teratozoospermia, a combination of the three, or even a complete absence of sperm cells in the ejaculate and can lead to a poor prognosis even with the help of assisted reproductive technology (ART). Intracytoplasmic sperm injection (ICSI) has been with us now for a quarter of a century and in spite of the controversy generated since its inception, it remains in the forefront of the techniques utilized in ART. The development of ICSI in 1992 has drastically decreased the impact of male factor, resulting in millions of pregnancies worldwide for couples who, without ICSI, would have had little chance of having their own biological child. This review focuses on the state of the art of ICSI regarding utility of bioassays that evaluate male factor infertility beyond the standard semen analysis and describes the current application and advances in regard to ICSI, particularly the genetic and epigenetic characteristics of spermatozoa and their impact on reproductive outcome. © 2017 Society for Reproduction and Fertility.

  7. Setting ART initiation targets in response to changing guidelines: The importance of addressing both steady-state and backlog.

    Science.gov (United States)

    Martin, Catherine; Naidoo, Nicolette P; Venter, W D Francois; Jaffer, Ambereen; Barker, Pierre M

    2014-05-12

    Target setting is useful in planning, assessing and improving antiretroviral treatment (ART) programmes. In the past 4 years, the ART initiation environment has been transformed due to the change in eligibility criteria (starting ART at a CD4+ count ART. To describe and illustrate the use of a target-setting model for estimating district-based targets in the era of an expanding ART programme and changing CD4+ count thresholds for ART initiation. Using previously described models and data for annual new HIV infections, we estimated both steady-state need for ART initiation and backlog in a North West Province district, accounting for the shift in eligibility. Comparison of actual v. targeted ART initiations was undertaken. The change in CD4+ count threshold adds a once-off group of newly eligible patients to the pool requiring ART - the backlog. The steady-state remains unchanged as it is determined by the annual rate of new HIV infections in previous years. The steady-state need for the district was 639 initiations/month, and the backlog was ~15,388 patients. After the shift in eligibility in September 2011, the steady-state target was exceeded over several months with some backlog addressed. Of the total backlog for this district, 72% remains to be cleared. South Africa has two pools of patients who need ART: the steady-state of HIV-infected patients entering the programme each year, determined by historical infection rates; and the backlog created by the shift in eligibility. The healthcare system needs to build long- term capacity to meet the steady-state need for ART and additional capacity to address the backlog.

  8. Arts-Based Learning: A New Approach to Nursing Education Using Andragogy.

    Science.gov (United States)

    Nguyen, Megan; Miranda, Joyal; Lapum, Jennifer; Donald, Faith

    2016-07-01

    Learner-oriented strategies focusing on learning processes are needed to prepare nursing students for complex practice situations. An arts-based learning approach uses art to nurture cognitive and emotional learning. Knowles' theory of andragogy aims to develop the skill of learning and can inform the process of implementing arts-based learning. This article explores the use and evaluation of andragogy-informed arts-based learning for teaching nursing theory at the undergraduate level. Arts-based learning activities were implemented and then evaluated by students and instructors using anonymous questionnaires. Most students reported that the activities promoted learning. All instructors indicated an interest in integrating arts-based learning into the curricula. Facilitators and barriers to mainstreaming arts-based learning were highlighted. Findings stimulate implications for prospective research and education. Findings suggest that arts-based learning approaches enhance learning by supporting deep inquiry and different learning styles. Further exploration of andragogy-informed arts-based learning in nursing and other disciplines is warranted. [J Nurs Educ. 2016;55(7):407-410.]. Copyright 2016, SLACK Incorporated.

  9. Arts Entrepreneurship Education in the UK and Germany: An Empirical Survey among Lecturers in Fine Art

    Science.gov (United States)

    Thom, Marco

    2017-01-01

    Purpose: The purpose of this paper is to report on the current state of arts entrepreneurship education at higher educational institutions (HEIs) in the UK and Germany. It is based on findings from questionnaire surveys among 210 lecturers in fine art at 89 HEIs in the UK and Germany. Design/methodology/approach: This paper explores issues related…

  10. PRA: an evaluation of state-of-the-art

    International Nuclear Information System (INIS)

    Joksimovich, V.

    1985-01-01

    Some elements of the probabilistic risk assessment (PRA) methodology can be characterized as mature and are even ready for some kind of a standardization effort. Other elements are still, however, in a rapid state of evolution. Questions are continuously being asked regarding maturity of PRA techniques vis-a-vis a regulatory decision-making process. Establishing a framework for evaluating state-of-the-art in any technological field is a challenging task. An implementation of a selected framework to a satisfactory conclusion is a monumental task. Of course, these types of issues can be discussed meaningfully only if they are tied to a particular application. The author's participation in the NSF-sponsored risk assessment project is discussed in the paper. The evaluation employed here makes use of the following five evaluation criteria: logical soundness, completeness, accuracy, acceptability, and practicality

  11. Mining Tacitus: secrets of empire, nature and art in the reason of state.

    Science.gov (United States)

    Keller, Vera

    2012-06-01

    A new political practice, the 'reason of state', informed the ends and practices of natural study in the late sixteenth century. Informed by the study of the Roman historian Tacitus, political writers gathered 'secrets of empire' from both history and travel. Following the economic reorientation of 'reason of state' by Giovanni Botero (1544-1617), such secrets came to include bodies of useful particulars concerning nature and art collected by an expanding personnel of intelligencers. A comparison between various writers describing wide-scale collections, such as Botero, Francis Bacon (1561-1626), Jakob Bornitz (1560-1625) and Matthias Bernegger (1582-1640), reveals that seventeenth-century natural intelligencers across Europe not only were analogous to political intelligencers, but also were sometimes one and the same. Those seeking political prudence cast themselves as miners, prying precious particulars from the recesses of history, experience and disparate disciplines, including mathematics, alchemy and natural philosophy. The seventeenth-century practice of combining searches for secrets of empire, nature and art contests a frequent historiographical divide between empirical science and Tacitism or reason of state. It also points to the ways political cunning shaped the management of information for both politics and the study of nature and art.

  12. Proceedings of B Factories, the state of the art in accelerators, detectors and physics

    International Nuclear Information System (INIS)

    Hitlin, D.

    1992-11-01

    The conference B Factories, The State of the Art in Accelerators, Detectors and Physics was held at Stanford Linear Accelerator Center on April 6-10, 1992. The guiding principle of the conference was to bring together accelerator physicists and high energy experimentalists and theorists at the same time, with the goal of encouraging communication in defining and solving problems in a way which cut across narrow areas of specialization. Thus the conference was, in large measure, two distinct conferences, one involving accelerator specialists, the other theorists and experimentalists. There were initial and closing plenary sessions, and three separate tracks of parallel sessions, called Accelerator, Detector/Physics and Joint Interest sessions. This report contains the papers of this conference, the general topics of these cover: vacuum system, lattice design, beam-beam interactions, rf systems, feedback systems, measuring instrumentation, the interaction region, radiation background, particle detectors, particle tracking and identification, data acquisition, and computing system, and particle theory

  13. Proceedings of B Factories, the state of the art in accelerators, detectors and physics

    Energy Technology Data Exchange (ETDEWEB)

    Hitlin, D. (ed.) (California Inst. of Tech., Pasadena, CA (United States))

    1992-11-01

    The conference B Factories, The State of the Art in Accelerators, Detectors and Physics was held at Stanford Linear Accelerator Center on April 6-10, 1992. The guiding principle of the conference was to bring together accelerator physicists and high energy experimentalists and theorists at the same time, with the goal of encouraging communication in defining and solving problems in a way which cut across narrow areas of specialization. Thus the conference was, in large measure, two distinct conferences, one involving accelerator specialists, the other theorists and experimentalists. There were initial and closing plenary sessions, and three separate tracks of parallel sessions, called Accelerator, Detector/Physics and Joint Interest sessions. This report contains the papers of this conference, the general topics of these cover: vacuum system, lattice design, beam-beam interactions, rf systems, feedback systems, measuring instrumentation, the interaction region, radiation background, particle detectors, particle tracking and identification, data acquisition, and computing system, and particle theory.

  14. An integrated computer design environment for the development of micro-computer critical software

    International Nuclear Information System (INIS)

    De Agostino, E.; Massari, V.

    1986-01-01

    The paper deals with the development of micro-computer software for Nuclear Safety System. More specifically, it describes an experimental work in the field of software development methodologies to be used for the implementation of micro-computer based safety systems. An investigation of technological improvements that are provided by state-of-the-art integrated packages for micro-based systems development has been carried out. The work has aimed to assess a suitable automated tools environment for the whole software life-cycle. The main safety functions, as DNBR, KW/FT, of a nuclear power reactor have been implemented in a host-target approach. A prototype test-bed microsystem has been implemented to run the safety functions in order to derive a concrete evaluation on the feasibility of critical software according to new technological trends of ''Software Factories''. (author)

  15. Catalytic Reforming of Oxygenates: State of the Art and Future Prospects.

    Science.gov (United States)

    Li, Di; Li, Xinyu; Gong, Jinlong

    2016-10-12

    This Review describes recent advances in the design, synthesis, reactivity, selectivity, structural, and electronic properties of the catalysts for reforming of a variety of oxygenates (e.g., from simple monoalcohols to higher polyols, then to sugars, phenols, and finally complicated mixtures like bio-oil). A comprehensive exploration of the structure-activity relationship in catalytic reforming of oxygenates is carried out, assisted by state-of-the-art characterization techniques and computational tools. Critical emphasis has been given on the mechanisms of these heterogeneous-catalyzed reactions and especially on the nature of the active catalytic sites and reaction pathways. Similarities and differences (reaction mechanisms, design and synthesis of catalysts, as well as catalytic systems) in the reforming process of these oxygenates will also be discussed. A critical overview is then provided regarding the challenges and opportunities for research in this area with a focus on the roles that systems of heterogeneous catalysis, reaction engineering, and materials science can play in the near future. This Review aims to present insights into the intrinsic mechanism involved in catalytic reforming and provides guidance to the development of novel catalysts and processes for the efficient utilization of oxygenates for energy and environmental purposes.

  16. State of art of nuclear telerobots

    Energy Technology Data Exchange (ETDEWEB)

    Yoon, Ji Sup; Oh, S C; Park, Y S; Kim, K S

    1997-03-01

    A state-of-the-art survey on telerobotics technology for nuclear applications is made with view to provide technical data base to interested users. Most of the information are gathered from G7 countries with some addition of Korean status of development. Although the bulk of information is focussed on mobile robots, graphic simulation for man-machine interface is also included in the survey. Examples of telerobotics application to nuclear work are investigated. (author). 108 refs., 9 tabs., 64 figs

  17. Thermoluminescence dosimetry: State-of-the-art and frontiers of future research

    International Nuclear Information System (INIS)

    Horowitz, Y.S.

    2014-01-01

    The state-of-the-art in the use of thermoluminescence for the measurement of energy imparted by ionizing radiation is discussed. Emphasis is on the advantages obtainable by the use of computerized glow curve analysis in (i) quality control, (ii) low dose environmental dosimetry, (iii) medical applications (especially precision) and microdosimetric applications, and (iv) mixed field ionization-density–dosimetry. Possible frontiers of future research are highlighted: (i) vector representation in glow curve analysis, (ii) combined OSL/TL measurements, (iii) detection of sub-ionization electrons, (iv) requirements for new TL materials and (v) theoretical subjects involving kinetic modeling invoking localized/delocalized recombination applied to dose response and track structure theory including creation of defects. - Highlights:: • State of the art in thermoluminescence dosimetry. • Benefits of computerized glow curve deconvolution. • Frontiers of future research:new materials, mixed-field dosimetry. • Localized/delocalized kinetic theory:ionization density dependence. • Kinetic theory:creation of defects:track structure theory

  18. State of the art on bioethanol production

    International Nuclear Information System (INIS)

    Barisano, D.; De Bari, I.; Viola, E.; Zimbardi, F.; Braccio, G.; Cantarella, M.; Gallifuoco, A.

    2001-01-01

    The state of the art, deals with the ethanol production from current processes based on the use of sugar and starch as feedstock and those under development based on lignocellulosic biomass. In the first section are reported the commercially available processes together with hints to the newest technologies. As regard the ethanol production from lignocellulosics, it has been collected data on the biomass availability in Europe as energy crops, industrial crops, agricultural residues and domestic waste. It is provided a bibliographic study on the technologies and processes under development worldwide for the conversion of lignocellulosics into ethanol. Finally, a brief discussion on the economics highlights the near term viability of producing ethanol by this way [it

  19. State of the Art on Alternative Fuels in Aviation. Executive summary

    NARCIS (Netherlands)

    Blakey, S.; Novelli, P.; Costes, P.; Bringtown, S.; Christensen, D.; Sakintuna, B.; Peineke, C.; Jongschaap, R.E.E.; Conijn, J.G.; Rutgers, B.; Valot, L.; Joubert, E.; Perelgritz, J.F.; Filogonio, A.; Roetger, T.; Prieur, A.; Starck, L.; Jeuland, N.; Bogers, P.; Midgley, R.; Bauldreay, J.; Rollin, G.; Rye, L.; Wilson, C.

    2010-01-01

    This paper summarises the findings from the SWAFEA preliminary state of the art study. It covers trends in aspects of future air transport, potential candidate fuels and associated feedstock along with sustainability and economical issues relevant for alternative fuels in aviation..

  20. Cultivating Demand for the Arts: Arts Learning, Arts Engagement, and State Arts Policy

    Science.gov (United States)

    Zakaras, Laura; Lowell, Julia F.

    2008-01-01

    To shed light on the decline in demand for the nonprofit arts, the authors describe what it means to cultivate demand for the arts, examine how well U.S. institutions are serving this function, and discuss whether it is in the public interest to make such cultivation a higher priority than it has been in the past. The authors propose that a strong…

  1. Initial Development and Testing of a State-of-the-Art Method to Quantify Hydrologic Model Uncertainty

    Science.gov (United States)

    2013-09-01

    H. Teller , and E. Teller . 1953. Equation of state calculations by fast computing machines . J Chem Phys, 21: 1087-1092. Skahill, B. E. 2012. Practice...of DE-MC sampler burn-in, a hybrid semi- automated approach was implemented, consistent with available guidance regarding practical application of...treatment of jump proposal dimensions that are out of bounds, and a hybrid, heuristic, semi- automated approach for assessing convergence of the DE-MC

  2. The Art of Morandi at the Interface of Analysis and Art Criticism

    Directory of Open Access Journals (Sweden)

    J. David Miller

    2010-12-01

    Full Text Available This study of Giorgio Morandi, the renowned 20th century Italian painter, begins with traditional applied analysis, relating his art to his life experience and his psychology. While this approach suggests that creating art was Morandi’s only significant outlet for personal feelings and fantasies, it is limited by a lack of biographical data. Consequently, I have adopted a second approach, as well, considering Morandi’s art as the visual equivalent of words from an analyst’s couch: I have noted my subjective responses and associations, comparing them with those of a consensus of art critics. From this perspective, I believe Morandi’s art demonstrates basic concepts of analytic process in a vivid and memorable way

  3. Computer holography: 3D digital art based on high-definition CGH

    International Nuclear Information System (INIS)

    Matsushima, K; Arima, Y; Nishi, H; Yamashita, H; Yoshizaki, Y; Ogawa, K; Nakahara, S

    2013-01-01

    Our recent works of high-definition computer-generated holograms (CGH) and the techniques used for the creation, such as the polygon-based method, silhouette method and digitized holography, are summarized and reviewed in this paper. The concept of computer holography is proposed in terms of integrating and crystalizing the techniques into novel digital art.

  4. Optimization of a Lattice Boltzmann Computation on State-of-the-Art Multicore Platforms

    Energy Technology Data Exchange (ETDEWEB)

    Williams, Samuel; Carter, Jonathan; Oliker, Leonid; Shalf, John; Yelick, Katherine

    2009-04-10

    We present an auto-tuning approach to optimize application performance on emerging multicore architectures. The methodology extends the idea of search-based performance optimizations, popular in linear algebra and FFT libraries, to application-specific computational kernels. Our work applies this strategy to a lattice Boltzmann application (LBMHD) that historically has made poor use of scalar microprocessors due to its complex data structures and memory access patterns. We explore one of the broadest sets of multicore architectures in the HPC literature, including the Intel Xeon E5345 (Clovertown), AMD Opteron 2214 (Santa Rosa), AMD Opteron 2356 (Barcelona), Sun T5140 T2+ (Victoria Falls), as well as a QS20 IBM Cell Blade. Rather than hand-tuning LBMHD for each system, we develop a code generator that allows us to identify a highly optimized version for each platform, while amortizing the human programming effort. Results show that our auto-tuned LBMHD application achieves up to a 15x improvement compared with the original code at a given concurrency. Additionally, we present detailed analysis of each optimization, which reveal surprising hardware bottlenecks and software challenges for future multicore systems and applications.

  5. Two-dimensional systems from introduction to state of the art

    CERN Document Server

    Benzaouia, Abdellah; Tadeo, Fernando

    2016-01-01

    A solution permitting the stabilization of 2-dimensional (2-D) continuous-time saturated system under state feedback control is presented in this book. The problems of delay and saturation are treated at the same time. The authors obtain novel results on continuous 2-D systems using the unidirectional Lyapunov function. The control synthesis and the saturation and delay conditions are presented as linear matrix inequalities. Illustrative examples are worked through to show the effectiveness of the approach and many comparisons are made with existing results. The second half of the book moves on to consider robust stabilization and filtering of 2-D systems with particular consideration being given to 2-D fuzzy systems. Solutions for the filter-design problems are demonstrated by computer simulation. The text builds up to the development of state feedback control for 2-D Takagi–Sugeno systems with stochastic perturbation. Conservatism is reduced by using slack matrices and the coupling between the Lyapunov ma...

  6. Analysis and simulation of emergency departments: state of the art and prospects

    OpenAIRE

    Vanbrabant, Lien; Braekers, Kris; Ramaekers, Katrien

    2017-01-01

    This abstract gives a brief overview of the state of the art on the analysis and simulation of emergency departments in hospitals. Based on this, research opportunities which will be addressed during my PhD are identified.

  7. Performance Measurement in Belgian Hospitals : a state-of-the-art

    OpenAIRE

    Van Caillie, Didier; Rouhana, Rima; Santin, Sarah

    2007-01-01

    This communication proposes a global state-of-the-art around the central question : "How is performance measured and controlled in Belgian hospitals. As a first step in a global research project dedicated to the use of Balanced ScoreCard in publics hospitals around the world, it is essentially focused on global economic aspects and on major macroeconomic statistics.

  8. Survey of the state of art in robotics and artificial intelligence, Volume 2

    Energy Technology Data Exchange (ETDEWEB)

    Thieme, G; Lux, P; Knappmann, R J; Schmidt, U

    1981-07-01

    This survey presents the state of the art in robotics and AI with emphasis on control and intelligence. It gives an introduction and summary description of robots and AI, identifies main application areas in space and benefits of the new technologies. Basic methods and concepts are illustrated. The state of the art, evolution trends and problem areas are described for industrial robots and space systems. Two reference missions are used to identify space opportunities. The potential application of existing know-how to space usage is identified. Recommendations for future research and development are given to overcome the problem areas. The survey comprises inventories of relevant publications, firms and institutions and know-how.

  9. All-optical reservoir computing.

    Science.gov (United States)

    Duport, François; Schneider, Bendix; Smerieri, Anteo; Haelterman, Marc; Massar, Serge

    2012-09-24

    Reservoir Computing is a novel computing paradigm that uses a nonlinear recurrent dynamical system to carry out information processing. Recent electronic and optoelectronic Reservoir Computers based on an architecture with a single nonlinear node and a delay loop have shown performance on standardized tasks comparable to state-of-the-art digital implementations. Here we report an all-optical implementation of a Reservoir Computer, made of off-the-shelf components for optical telecommunications. It uses the saturation of a semiconductor optical amplifier as nonlinearity. The present work shows that, within the Reservoir Computing paradigm, all-optical computing with state-of-the-art performance is possible.

  10. Computational methods in power system analysis

    CERN Document Server

    Idema, Reijer

    2014-01-01

    This book treats state-of-the-art computational methods for power flow studies and contingency analysis. In the first part the authors present the relevant computational methods and mathematical concepts. In the second part, power flow and contingency analysis are treated. Furthermore, traditional methods to solve such problems are compared to modern solvers, developed using the knowledge of the first part of the book. Finally, these solvers are analyzed both theoretically and experimentally, clearly showing the benefits of the modern approach.

  11. State of the art of parallel scientific visualization applications on PC clusters; Etat de l'art des applications de visualisation scientifique paralleles sur grappes de PC

    Energy Technology Data Exchange (ETDEWEB)

    Juliachs, M

    2004-07-01

    In this state of the art on parallel scientific visualization applications on PC clusters, we deal with both surface and volume rendering approaches. We first analyze available PC cluster configurations and existing parallel rendering software components for parallel graphics rendering. CEA/DIF has been studying cluster visualization since 2001. This report is part of a study to set up a new visualization research platform. This platform consisting of an eight-node PC cluster under Linux and a tiled display was installed in collaboration with Versailles-Saint-Quentin University in August 2003. (author)

  12. Current State-of-the-Art MRI for Comprehensive Evaluation of Potential Living Liver Donors.

    Science.gov (United States)

    Jhaveri, Kartik S; Guo, Lijun; Guimarães, Luís

    2017-07-01

    This review focuses on the role of state-of-the-art MRI-based techniques for comprehensive evaluation of living donors providing single-visit assessment of the liver vasculature via MR angiography, of the biliary tract via conventional T2-weighted MR cholangiography and T1-weighted gadoxetate disodium-enhanced MR cholangiography, and of hepatic steatosis via T2*-corrected multiecho chemical shift-based water-fat separation MRI and high-speed T2-corrected multiecho MR spectroscopy. By using current state-of-the-art techniques, MRI can provide a one-stop-shop method for evaluation of the potential living liver donors.

  13. Exchange rate predictability and state-of-the-art models

    OpenAIRE

    Yeșin, Pınar

    2016-01-01

    This paper empirically evaluates the predictive performance of the International Monetary Fund's (IMF) exchange rate assessments with respect to future exchange rate movements. The assessments of real trade-weighted exchange rates were conducted from 2006 to 2011, and were based on three state-of-the-art exchange rate models with a medium-term focus which were developed by the IMF. The empirical analysis using 26 advanced and emerging market economy currencies reveals that the "diagnosis" of ...

  14. The state-of-the-art in research on Science teaching for deaf students

    Directory of Open Access Journals (Sweden)

    Ronaldo Santos Santana

    2018-05-01

    Full Text Available This study aimed to highlight the state-of-the-art in research on Science teaching for deaf students from 2012 to 2017, in order to outline an overview of the latest studies in the area, as well as their trends and main considerations. For that, a state-of-the-art research was carried out and, for the construction of the data corpus, abstracts of papers published in scientific journals, course conclusion papers, Masters thesis and Doctoral dissertations were used. From the data analysis, categories were elaborated and trends and challenges in the field were made explicit. The results demonstrate that research in this field is in imminent growth and they are being articulated to the theoretical frameworks that underpin the teaching of Science for hearing students.

  15. Reinforcement Learning State-of-the-Art

    CERN Document Server

    Wiering, Marco

    2012-01-01

    Reinforcement learning encompasses both a science of adaptive behavior of rational beings in uncertain environments and a computational methodology for finding optimal behaviors for challenging problems in control, optimization and adaptive behavior of intelligent agents. As a field, reinforcement learning has progressed tremendously in the past decade. The main goal of this book is to present an up-to-date series of survey articles on the main contemporary sub-fields of reinforcement learning. This includes surveys on partially observable environments, hierarchical task decompositions, relational knowledge representation and predictive state representations. Furthermore, topics such as transfer, evolutionary methods and continuous spaces in reinforcement learning are surveyed. In addition, several chapters review reinforcement learning methods in robotics, in games, and in computational neuroscience. In total seventeen different subfields are presented by mostly young experts in those areas, and together the...

  16. Brain-computer interface research a state-of-the-art summary

    CERN Document Server

    Allison, Brendan; Edlinger, Günter; Leuthardt, E C

    Brain-computer interfaces (BCIs) are rapidly developing into a mainstream, worldwide research endeavor. With so many new groups and projects, it can be difficult to identify the best ones. This book summarizes ten leading projects from around the world. About 60 submissions were received in 2011 for the highly competitive BCI Research Award, and an international jury selected the top ten. This Brief gives a concise but carefully illustrated and fully up-to-date description of each of these projects, together with an introduction and concluding chapter by the editors.

  17. Sensitivity study of state-of-the-art common cause failure analysis

    International Nuclear Information System (INIS)

    Guey, Ching

    2004-01-01

    Common cause failures (CCFs) have been touted as one of the major contributors of plant risk due to its pervasive nature and somewhat conservative approaches taken in most Probabilistic Risk Assessment (PRA) studies. The objectives of this study are twofold: First, to gain a better understanding on the impact of various CCF failure probability on the overall plant risk. Secondly, to appreciate the state-of-the-art CCF modelling and data limitations for applications to a full-scale plant risk assessment. The sensitivity study of varying the CCF parameters for different cases indicates that CCF data differences based on the various cases commonly adopted in the PRAs yield core damage frequency variations between 8.5% to -25.6% of the baseline case. It appears that only if CCFs are guaranteed to occur, the core damage frequency would change significantly, by approximately a factor of 5. This suggests that prevention of CCFs is more important than dwelling on the analytical differences in the finer interpretation of the operating experience to develop the CCF parameters. (author)

  18. State of the art survey of network operating systems development

    Science.gov (United States)

    1985-01-01

    The results of the State-of-the-Art Survey of Network Operating Systems (NOS) performed for Goddard Space Flight Center are presented. NOS functional characteristics are presented in terms of user communication data migration, job migration, network control, and common functional categories. Products (current or future) as well as research and prototyping efforts are summarized. The NOS products which are revelant to the space station and its activities are evaluated.

  19. A Short Survey on the State of the Art in Architectures and Platforms for Large Scale Data Analysis and Knowledge Discovery from Data

    Energy Technology Data Exchange (ETDEWEB)

    Begoli, Edmon [ORNL

    2012-01-01

    Intended as a survey for practicing architects and researchers seeking an overview of the state-of-the-art architectures for data analysis, this paper provides an overview of the emerg- ing data management and analytic platforms including par- allel databases, Hadoop-based systems, High Performance Computing (HPC) platforms and platforms popularly re- ferred to as NoSQL platforms. Platforms are presented based on their relevance, analysis they support and the data organization model they support.

  20. State-of-the-Art Methods for Brain Tissue Segmentation: A Review.

    Science.gov (United States)

    Dora, Lingraj; Agrawal, Sanjay; Panda, Rutuparna; Abraham, Ajith

    2017-01-01

    Brain tissue segmentation is one of the most sought after research areas in medical image processing. It provides detailed quantitative brain analysis for accurate disease diagnosis, detection, and classification of abnormalities. It plays an essential role in discriminating healthy tissues from lesion tissues. Therefore, accurate disease diagnosis and treatment planning depend merely on the performance of the segmentation method used. In this review, we have studied the recent advances in brain tissue segmentation methods and their state-of-the-art in neuroscience research. The review also highlights the major challenges faced during tissue segmentation of the brain. An effective comparison is made among state-of-the-art brain tissue segmentation methods. Moreover, a study of some of the validation measures to evaluate different segmentation methods is also discussed. The brain tissue segmentation, content in terms of methodologies, and experiments presented in this review are encouraging enough to attract researchers working in this field.

  1. State of the Art in Transfer Functions for Direct Volume Rendering

    KAUST Repository

    Ljung, Patric; Krü ger, Jens; Groller, Eduard; Hadwiger, Markus; Hansen, Charles D.; Ynnerman, Anders

    2016-01-01

    A central topic in scientific visualization is the transfer function (TF) for volume rendering. The TF serves a fundamental role in translating scalar and multivariate data into color and opacity to express and reveal the relevant features present in the data studied. Beyond this core functionality, TFs also serve as a tool for encoding and utilizing domain knowledge and as an expression for visual design of material appearances. TFs also enable interactive volumetric exploration of complex data. The purpose of this state-of-the-art report (STAR) is to provide an overview of research into the various aspects of TFs, which lead to interpretation of the underlying data through the use of meaningful visual representations. The STAR classifies TF research into the following aspects: dimensionality, derived attributes, aggregated attributes, rendering aspects, automation, and user interfaces. The STAR concludes with some interesting research challenges that form the basis of an agenda for the development of next generation TF tools and methodologies. © 2016 The Author(s) Computer Graphics Forum © 2016 The Eurographics Association and John Wiley & Sons Ltd. Published by John Wiley & Sons Ltd.

  2. State of the Art in Transfer Functions for Direct Volume Rendering

    KAUST Repository

    Ljung, Patric

    2016-07-04

    A central topic in scientific visualization is the transfer function (TF) for volume rendering. The TF serves a fundamental role in translating scalar and multivariate data into color and opacity to express and reveal the relevant features present in the data studied. Beyond this core functionality, TFs also serve as a tool for encoding and utilizing domain knowledge and as an expression for visual design of material appearances. TFs also enable interactive volumetric exploration of complex data. The purpose of this state-of-the-art report (STAR) is to provide an overview of research into the various aspects of TFs, which lead to interpretation of the underlying data through the use of meaningful visual representations. The STAR classifies TF research into the following aspects: dimensionality, derived attributes, aggregated attributes, rendering aspects, automation, and user interfaces. The STAR concludes with some interesting research challenges that form the basis of an agenda for the development of next generation TF tools and methodologies. © 2016 The Author(s) Computer Graphics Forum © 2016 The Eurographics Association and John Wiley & Sons Ltd. Published by John Wiley & Sons Ltd.

  3. Combinatorial computational chemistry approach to the design of metal catalysts for deNOx

    International Nuclear Information System (INIS)

    Endou, Akira; Jung, Changho; Kusagaya, Tomonori; Kubo, Momoji; Selvam, Parasuraman; Miyamoto, Akira

    2004-01-01

    Combinatorial chemistry is an efficient technique for the synthesis and screening of a large number of compounds. Recently, we introduced the combinatorial approach to computational chemistry for catalyst design and proposed a new method called ''combinatorial computational chemistry''. In the present study, we have applied this combinatorial computational chemistry approach to the design of precious metal catalysts for deNO x . As the first step of the screening of the metal catalysts, we studied Rh, Pd, Ag, Ir, Pt, and Au clusters regarding the adsorption properties towards NO molecule. It was demonstrated that the energetically most stable adsorption state of NO on Ir model cluster, which was irrespective of both the shape and number of atoms including the model clusters

  4. PEOPLE RETRIEVAL BY MEANS OF COMPOSITE PICTURES: PROBLEM STATE-OF-THE-ART AND TECHNOLOGIES

    Directory of Open Access Journals (Sweden)

    Georgy A. Kukharev

    2014-11-01

    Full Text Available We discuss the problem of people retrieval by means of composite pictures constructed according to descriptive portrait. An overview of the problem state-of-the-art is provided beginning from the basic concepts and terminology to a modern technology for composite picture creation, real-world scenarios and search results. The development history of systems for forming composite portraits (photo robots and sketches and the ideas implemented in these systems are provided. The problem of automatic comparison of composite pictures with the original ones is discussed, and the reasons for unattainability of stable retrieval of originals by a composite picture in real-world scenarios are revealed. Requirements to composite pictures databases in addition to the existing benchmark databases of facial images and also methods for implementation of such databases are formulated. Approaches for generation of sketches population from an initial one that increase effectiveness of identikit-based photo image retrieval systems are proposed. The method of similarity index increasing in the couple identikit-photograph based on computation of an average identikit from the created population is provided. It is shown that such composite pictures are more similar to original portraits and their use in the discussed search problem can lead to good results. Thus the created identikits meet the requirements of the truthful scenario as take into account the possibility of incomplete information in descriptions. Results of experiments on CUHK Face Sketch and CUHK Face Sketch FERET databases and also open access identikits and corresponding photos are discussed.

  5. Link Prediction in Social Networks: the State-of-the-Art

    OpenAIRE

    Wang, Peng; Xu, Baowen; Wu, Yurong; Zhou, Xiaoyu

    2014-01-01

    In social networks, link prediction predicts missing links in current networks and new or dissolution links in future networks, is important for mining and analyzing the evolution of social networks. In the past decade, many works have been done about the link prediction in social networks. The goal of this paper is to comprehensively review, analyze and discuss the state-of-the-art of the link prediction in social networks. A systematical category for link prediction techniques and problems ...

  6. Integrated Simulation for HVAC Performance Prediction: State-of-the-Art Illustration

    NARCIS (Netherlands)

    Hensen, J.L.M.; Clarke, J.A.

    2000-01-01

    This paper aims to outline the current state-of-the-art in integrated building simulation for performance prediction of heating, ventilating and air-conditioning (HVAC) systems. The ESP-r system is used as an example where integrated simulation is a core philosophy behind the development. The

  7. State-of-the-art review of some artificial intelligence applications in pile foundations

    Institute of Scientific and Technical Information of China (English)

    Mohamed A. Shahin

    2016-01-01

    Geotechnical engineering deals with materials (e.g. soil and rock) that, by their very nature, exhibit varied and uncertain behavior due to the imprecise physical processes associated with the formation of these materials. Modeling the behavior of such materials in geotechnical engineering applications is complex and sometimes beyond the ability of most traditional forms of physically-based engineering methods. Artificial intelligence (AI) is becoming more popular and particularly amenable to modeling the complex behavior of most geotechnical engineering applications because it has demonstrated superior predictive ability compared to traditional methods. This paper provides state-of-the-art review of some selected AI techniques and their applications in pile foundations, and presents the salient features associated with the modeling development of these AI techniques. The paper also discusses the strength and limitations of the selected AI techniques compared to other available modeling approaches.

  8. A project based learning experience through best use of state-of-the-art technology

    Directory of Open Access Journals (Sweden)

    Juan José López Berrio

    2016-01-01

    Full Text Available Our proposal consists in activating the most important talent in the education institutions (their students, converting them in the change movement they need. How do we do that? We attract them through an enriching and disruptive programme, that suggest them a real entrepreneurship challenge, guiding and empowering them to reach the goals planned. Our vehicle is the Innovation Lab, a permanent program, where through a project based learning and working as a real and modern startup, the students work and collaborate using state of the art technology and methodologies, such as cloud computing, design thinking, flipped classroom, gamification, etc., by combining on-line work and sessions at school. The idea is revolutionary and innovative but also perfectly aligned with the content of the Horizon 2020-Schools Edition. We have achieved great results, both qualitative and quantitative, as you would be able to see along the article.

  9. Developing a Distributed Computing Architecture at Arizona State University.

    Science.gov (United States)

    Armann, Neil; And Others

    1994-01-01

    Development of Arizona State University's computing architecture, designed to ensure that all new distributed computing pieces will work together, is described. Aspects discussed include the business rationale, the general architectural approach, characteristics and objectives of the architecture, specific services, and impact on the university…

  10. The Buddha in the Digital Computer: Art and Technology in Zen and the Art of Motorcycle Maintenance.

    Science.gov (United States)

    Williams, Edwin W.

    The novel, "Zen and the Art of Motorcycle Maintenance" attempts to reconcile the dichotomy that exists between art and technology. The main character, Pirsig, believes that technology, or the making of things, is essentially art for two reasons: the Greeks never separated art from manufacture and real technology does not exploit nature.…

  11. Art: The Telling of History through Technology.

    Science.gov (United States)

    Scali, Nancy

    1990-01-01

    Describes several writing projects that use computers to expose students to art, cultural history, and present day technology. Suggests activities for Prehistoric art, Egyptian art, African art, Japanese art, and Native American art. (MG)

  12. A state space approach for piecewise-linear recurrent neural networks for identifying computational dynamics from neural measurements.

    Directory of Open Access Journals (Sweden)

    Daniel Durstewitz

    2017-06-01

    Full Text Available The computational and cognitive properties of neural systems are often thought to be implemented in terms of their (stochastic network dynamics. Hence, recovering the system dynamics from experimentally observed neuronal time series, like multiple single-unit recordings or neuroimaging data, is an important step toward understanding its computations. Ideally, one would not only seek a (lower-dimensional state space representation of the dynamics, but would wish to have access to its statistical properties and their generative equations for in-depth analysis. Recurrent neural networks (RNNs are a computationally powerful and dynamically universal formal framework which has been extensively studied from both the computational and the dynamical systems perspective. Here we develop a semi-analytical maximum-likelihood estimation scheme for piecewise-linear RNNs (PLRNNs within the statistical framework of state space models, which accounts for noise in both the underlying latent dynamics and the observation process. The Expectation-Maximization algorithm is used to infer the latent state distribution, through a global Laplace approximation, and the PLRNN parameters iteratively. After validating the procedure on toy examples, and using inference through particle filters for comparison, the approach is applied to multiple single-unit recordings from the rodent anterior cingulate cortex (ACC obtained during performance of a classical working memory task, delayed alternation. Models estimated from kernel-smoothed spike time data were able to capture the essential computational dynamics underlying task performance, including stimulus-selective delay activity. The estimated models were rarely multi-stable, however, but rather were tuned to exhibit slow dynamics in the vicinity of a bifurcation point. In summary, the present work advances a semi-analytical (thus reasonably fast maximum-likelihood estimation framework for PLRNNs that may enable to recover

  13. Computer analysis of lighting style in fine art: steps towards inter-artist studies

    Science.gov (United States)

    Stork, David G.

    2011-03-01

    Stylometry in visual art-the mathematical description of artists' styles - has been based on a number of properties of works, such as color, brush stroke shape, visual texture, and measures of contours' curvatures. We introduce the concept of quantitative measures of lighting, such as statistical descriptions of spatial coherence, diuseness, and so forth, as properties of artistic style. Some artists of the high Renaissance, such as Leonardo, worked from nature and strove to render illumination "faithfully" photorealists, such as Richard Estes, worked from photographs and duplicated the "physics based" lighting accurately. As such, each had dierent motivations, methodologies, stagings, and "accuracies" in rendering lighting clues. Perceptual studies show that observers are poor judges of properties of lighting in photographs such as consistency (and thus by extension in paintings as well); computer methods such as rigorous cast-shadow analysis, occluding-contour analysis and spherical harmonic based estimation of light fields can be quite accurate. For this reasons, computer lighting analysis can provide a new tools for art historical studies. We review lighting analysis in paintings such as Vermeer's Girl with a pearl earring, de la Tour's Christ in the carpenter's studio, Caravaggio's Magdalen with the smoking flame and Calling of St. Matthew) and extend our corpus to works where lighting coherence is of interest to art historians, such as Caravaggio's Adoration of the Shepherds or Nativity (1609) in the Capuchin church of Santa Maria degli Angeli. Our measure of lighting coherence may help reveal the working methods of some artists and in diachronic studies of individual artists. We speculate on artists and art historical questions that may ultimately profit from future renements to these new computational tools.

  14. Wireless Sensor Network Security Enhancement Using Directional Antennas: State of the Art and Research Challenges.

    Science.gov (United States)

    Curiac, Daniel-Ioan

    2016-04-07

    Being often deployed in remote or hostile environments, wireless sensor networks are vulnerable to various types of security attacks. A possible solution to reduce the security risks is to use directional antennas instead of omnidirectional ones or in conjunction with them. Due to their increased complexity, higher costs and larger sizes, directional antennas are not traditionally used in wireless sensor networks, but recent technology trends may support this method. This paper surveys existing state of the art approaches in the field, offering a broad perspective of the future use of directional antennas in mitigating security risks, together with new challenges and open research issues.

  15. Computer-oriented approach to fault-tree construction

    International Nuclear Information System (INIS)

    Salem, S.L.; Apostolakis, G.E.; Okrent, D.

    1976-11-01

    A methodology for systematically constructing fault trees for general complex systems is developed and applied, via the Computer Automated Tree (CAT) program, to several systems. A means of representing component behavior by decision tables is presented. The method developed allows the modeling of components with various combinations of electrical, fluid and mechanical inputs and outputs. Each component can have multiple internal failure mechanisms which combine with the states of the inputs to produce the appropriate output states. The generality of this approach allows not only the modeling of hardware, but human actions and interactions as well. A procedure for constructing and editing fault trees, either manually or by computer, is described. The techniques employed result in a complete fault tree, in standard form, suitable for analysis by current computer codes. Methods of describing the system, defining boundary conditions and specifying complex TOP events are developed in order to set up the initial configuration for which the fault tree is to be constructed. The approach used allows rapid modifications of the decision tables and systems to facilitate the analysis and comparison of various refinements and changes in the system configuration and component modeling

  16. State-of-the-art of biodegradable composite materials

    International Nuclear Information System (INIS)

    Baley, Ch.; Grohens, Y.; Pillin, I.

    2004-01-01

    Nowadays, the market demand for environment friendly materials is in strong growth. The biodegradable composites (biodegradable fibres and polymers) mainly extracted from renewable resources will be a major contributor to the production of new industrial high performance products partially solving the problem of waste management. At the end of the lifetime, a structural bio-composite could be be crushed and recycled through a controlled industrial composting process. This the state-of-the-art report focuses on the biopolymers the vegetable fibres properties, the mechanisms of biodegradation and the examples of biodegradable composites. Eco-design of new products requires these new materials for which a life cycle analysis is nevertheless necessary to validate their environmental benefits. (authors)

  17. INFORMATION STORAGE AND RETRIEVAL, A STATE-OF-THE-ART REPORT

    Science.gov (United States)

    The objective of the study was to compile relevant background and interpretive material and prepare a state-of-the-art report which would put the...to-person communications. Section III presents basic IS and R concepts and techniques. It traces the history of traditional librarianship through...the process of communication between the originators and users of information. Section V categorizes the information system operations required to

  18. Analysis of Respiratory Sounds: State of the Art

    Directory of Open Access Journals (Sweden)

    Sandra Reichert

    2008-01-01

    Full Text Available Objective This paper describes state of the art, scientific publications and ongoing research related to the methods of analysis of respiratory sounds. Methods and material Review of the current medical and technological literature using Pubmed and personal experience. Results The study includes a description of the various techniques that are being used to collect auscultation sounds, a physical description of known pathologic sounds for which automatic detection tools were developed. Modern tools are based on artificial intelligence and on technics such as artificial neural networks, fuzzy systems, and genetic algorithms… Conclusion The next step will consist in finding new markers so as to increase the efficiency of decision aid algorithms and tools.

  19. Environmental impacts and benefits of state-of-the-art technologies for E-waste management.

    Science.gov (United States)

    Ikhlayel, Mahdi

    2017-10-01

    This study aims to evaluate the environmental impacts and benefits of state-of-the-art technologies for proper e-waste handling using Jordan as a case study. Life Cycle Assessment (LCA) was employed to evaluate five advanced management systems represent state-of-the-art treatment technologies, including sanitary landfilling; proper recycling of metals, materials, and precious metals (PMs); and incineration of plastic and the hazardous portion of printed circuit boards (PCBs). Six e-waste products that contribute the most to the e-waste in Jordan were included in the assessment of each scenario, which resulted in 30 total cases of e-waste management. The findings indicated that landfills for the entire components of the e-waste stream are the worst option and should be avoided. The most promising e-waste management scenario features integrated e-waste processes based on the concept of Integrated Waste Management (IWM), including recycling materials such as non-PMs and PMs, incinerating plastic and the hazardous content of PCBs using the energy recovered from incineration, and using sanitary landfills of residues. For this scenario, the best environmental performance was obtained for the treatment of mobile phones. Incineration of the portion of hazardous waste using energy recovery is an option that deserves attention. Because scenario implementation depends on more than just the environmental benefits (e.g., economic cost and technical aspects), the study proposes a systematic approach founded on the IWM concept for e-waste management scenario selection. Copyright © 2017 Elsevier Ltd. All rights reserved.

  20. MRI Sequences in Head & Neck Radiology - State of the Art.

    Science.gov (United States)

    Widmann, Gerlig; Henninger, Benjamin; Kremser, Christian; Jaschke, Werner

    2017-05-01

    Background  Magnetic resonance imaging (MRI) has become an essential imaging modality for the evaluation of head & neck pathologies. However, the diagnostic power of MRI is strongly related to the appropriate selection and interpretation of imaging protocols and sequences. The aim of this article is to review state-of-the-art sequences for the clinical routine in head & neck MRI and to describe the evidence for which medical question these sequences and techniques are useful. Method  Literature review of state-of-the-art sequences in head & neck MRI. Results and Conclusion  Basic sequences (T1w, T2w, T1wC+) and fat suppression techniques (TIRM/STIR, Dixon, Spectral Fat sat) are important tools in the diagnostic workup of inflammation, congenital lesions and tumors including staging. Additional sequences (SSFP (CISS, FIESTA), SPACE, VISTA, 3D-FLAIR) are used for pathologies of the cranial nerves, labyrinth and evaluation of endolymphatic hydrops in Menière's disease. Vessel and perfusion sequences (3D-TOF, TWIST/TRICKS angiography, DCE) are used in vascular contact syndromes, vascular malformations and analysis of microvascular parameters of tissue perfusion. Diffusion-weighted imaging (EPI-DWI, non-EPI-DWI, RESOLVE) is helpful in cholesteatoma imaging, estimation of malignancy, and evaluation of treatment response and posttreatment recurrence in head & neck cancer. Understanding of MRI sequences and close collaboration with referring physicians improves the diagnostic confidence of MRI in the daily routine and drives further research in this fascinating image modality. Key Points:   · Understanding of MRI sequences is essential for the correct and reliable interpretation of MRI findings.. · MRI protocols have to be carefully selected based on relevant clinical information.. · Close collaboration with referring physicians improves the output obtained from the diagnostic possibilities of MRI.. Citation Format · Widmann G, Henninger B, Kremser C et

  1. art and culture administration in Edo State

    African Journals Online (AJOL)

    imitch

    its environment the social, political, economic, aesthetic and religious norms and .... December, 2009, the Ministry of Arts, Culture and Tourism did organize a well ... and Social Welfare Departments and the mass media in the state so that the ...

  2. Artificial intelligence, expert systems, computer vision, and natural language processing

    Science.gov (United States)

    Gevarter, W. B.

    1984-01-01

    An overview of artificial intelligence (AI), its core ingredients, and its applications is presented. The knowledge representation, logic, problem solving approaches, languages, and computers pertaining to AI are examined, and the state of the art in AI is reviewed. The use of AI in expert systems, computer vision, natural language processing, speech recognition and understanding, speech synthesis, problem solving, and planning is examined. Basic AI topics, including automation, search-oriented problem solving, knowledge representation, and computational logic, are discussed.

  3. Laser Beam Machining (LBM), State of the Art and New Opportunities

    NARCIS (Netherlands)

    Meijer, J.

    2004-01-01

    An overview is given of the state of the art of laser beam machining in general with special emphasis on applications of short and ultrashort lasers. In laser welding the trend is to apply optical sensors for process control. Laser surface treatment is mostly used to apply corrosion and wear

  4. An Iterated Tabu Search Approach for the Clique Partitioning Problem

    Directory of Open Access Journals (Sweden)

    Gintaras Palubeckis

    2014-01-01

    all cliques induced by the subsets is as small as possible. We develop an iterated tabu search (ITS algorithm for solving this problem. The proposed algorithm incorporates tabu search, local search, and solution perturbation procedures. We report computational results on CPP instances of size up to 2000 vertices. Performance comparisons of ITS against state-of-the-art methods from the literature demonstrate the competitiveness of our approach.

  5. Negociaciones de paz en Colombia, 1982-2009. Un estado del arte Peace Negotiations in Colombia, 1982-2009. A State of the Art

    Directory of Open Access Journals (Sweden)

    Alderid Gutiérrez Loaiza

    2012-06-01

    Full Text Available En Colombia se han realizado diversos procesos de paz con grupos armados al margen de la ley. Este fenómeno ha provocado una producción académica considerable que estudia uno o varios de los procesos. A pesar de esta riqueza bibliográfica, no existen estudios que realicen una sistematización de ellos. Este artículo hace una selección de 123 trabajos sobre los procesos de paz en Colombia entre 1982 y 2009. Bajo la metodología de estado del arte analiza libros, capítulos de libro, revistas y documentos electrónicos, en los cuales muestra la posición de los autores frente a los procesos de paz, el enfoque que utilizan, entre otras características. Además, se entrega la bibliografía clasificada por temáticas.Colombia has made several peace processes with armed groups operating outside the law. This phenomenon has caused considerable academic output that studying one or more processes. Despite this wealth of literature, those studies have not made a classification of them. This article makes a selection of 123 works on peace processes in Colombia between 1982 and 2009. Under the state of the art methodology, it discussed books, book chapters, journals and documents online, which show the position of authors about the peace process, the approach used, among others characteristics. In addition, the literature has been classified by topics in this article.

  6. State of the art of parallel scientific visualization applications on PC clusters; Etat de l'art des applications de visualisation scientifique paralleles sur grappes de PC

    Energy Technology Data Exchange (ETDEWEB)

    Juliachs, M

    2004-07-01

    In this state of the art on parallel scientific visualization applications on PC clusters, we deal with both surface and volume rendering approaches. We first analyze available PC cluster configurations and existing parallel rendering software components for parallel graphics rendering. CEA/DIF has been studying cluster visualization since 2001. This report is part of a study to set up a new visualization research platform. This platform consisting of an eight-node PC cluster under Linux and a tiled display was installed in collaboration with Versailles-Saint-Quentin University in August 2003. (author)

  7. IEC planning: eight state-of-the-art principles.

    Science.gov (United States)

    Middleton, J

    1983-12-01

    Considerable experience and research has been accumulated in the last 20 years on the ways in which information/education/communication (IEC) programs can be effectively designed, implemented, and evaluated. Possibly more effort has focused on population and family planning IEC than on any other sectoral program of development communication. Several principles have emerged which, taken together, define the state of the art in the field. These principles provide a framework of experience which can guide the development of comprehensive IEC programs. They include: policy and resource assessment; audience analysis; strategy design; message research and pretesting; participation and feedback; management; evaluation; and collaboration. The nature of the national policy base for population and family planning programs will determine the goals and approaches of the IEC program. Strong policies of limitation on popultion growth lead to equally strong and pervasive IEC efforts designed to directly affect contraceptive behavior. Assessment of existing policy is an essential aspect of the design of an effective IEC program. Policies establish the rationale and boundaries for action. Population and family planning programs are concerned with some of the most intimate human behavior. Consequently, structured and sensitive audience analysis has become an integral part of the design of IEC programs. The design of communication strategy requires clearly stated objectives. Principles of human learning are used to structure information appropriately. Message research and pretesting have become integral components of the strategy design process. Small scale research on specific objectives is necessary to establish the basis for message design. Audience participation and feedback in remaining phases of program development and implementation are important. The management of an IEC program requires a specific combination of planning, flexibility, and creativity. Evaluation of program

  8. Feasibility of computed tomography-guided core needle biopsy in producing state-of-the-art clinical management in Chinese lung cancer.

    Science.gov (United States)

    Chen, Hua-Jun; Yang, Jin-Ji; Fang, Liang-Yi; Huang, Min-Min; Yan, Hong-Hong; Zhang, Xu-Chao; Xu, Chong-Rui; Wu, Yi-Long

    2014-03-01

    A satisfactory biopsy determines the state-of-the-art management of lung cancer in this era of personalized medicine. This study aimed to investigate the suitability and efficacy of computed tomography (CT)-guided core needle biopsy in clinical management. A cohort of 353 patients with clinically suspected lung cancer was enrolled in the study. Patient factors and biopsy variables were recorded. Epidermal growth factor receptor (EGFR) gene mutations and echinoderm microtubule-associated protein-like 4 (EML4)-anaplastic lymphoma kinase (ALK) rearrangement were detected in tumor specimens. Adequacy of biopsic obtainment for clinical trial screening and tissue bank establishment were reviewed. Overall diagnostic accuracy of malignancy achieved 98.5%. The median biopsy time of the cohort was 20 minutes. In patients with non-small cell lung cancer (NSCLC), 99.3% (287/289) were diagnosed as specific histologic subtypes, and two patients (0.7%) were determined as NSCLC not otherwise specified (NOS). EGFR mutations were analyzed in 81.7% (236/289) of patients with NSCLC, and 98.7% (233/236) showed conclusive results. EML4-ALK gene fusion was tested in 43.9% (127/289) of NSCLC patients, and 98.4% (125/127) showed conclusive results: 6.4% (8/125) of those had gene fusion. Ninety-six NSCLC patients participated in clinical trial screening and provided mandatory tumor slides for molecular profiling. Pathological evaluation was fulfilled in 90 patients (93.8%); 99.4% (320/322) of patients with malignancy provided extra tissue for the establishment of a tumor bank. CT-guided core needle biopsy provided optimal clinical management in this era of translational medicine. The biopsic modality should be prioritized in selected lung cancer patients.

  9. State of the Art in Photon-Density Estimation

    DEFF Research Database (Denmark)

    Hachisuka, Toshiya; Jarosz, Wojciech; Georgiev, Iliyan

    2013-01-01

    scattering. Since its introduction, photon-density estimation has been significantly extended in computer graphics with the introduction of: specialized techniques that intelligently modify the positions or bandwidths to reduce visual error using a small number of photons, approaches that eliminate error...

  10. State of the Art in Photon Density Estimation

    DEFF Research Database (Denmark)

    Hachisuka, Toshiya; Jarosz, Wojciech; Bouchard, Guillaume

    2012-01-01

    scattering. Since its introduction, photon-density estimation has been significantly extended in computer graphics with the introduction of: specialized techniques that intelligently modify the positions or bandwidths to reduce visual error using a small number of photons, approaches that eliminate error...

  11. Art, Objects, and Beautiful Stories: A "New" Approach to Spiritual Care.

    Science.gov (United States)

    Smith, Aaron P B; Read, Julia E

    2017-06-01

    The use of story, and the use of art or various arts-based techniques have become popular in a number of helping professions, including spiritual care. There remains a gap in the literature, however, in which an approach comprised of both story and art or objects is explored. This paper addresses this gap by discussing the experience, theory, benefits, and technique of combining story and art or object-based techniques for the provision of spiritual care.

  12. Computer assisted orthopaedic and trauma surgery. State of the art and future perspectives

    NARCIS (Netherlands)

    Schep, N. W. L.; Broeders, I. A. M. J.; van der Werken, Chr

    2003-01-01

    In recent years computer technologies have become more and more integrated in surgical procedures. The potential advantages of computer assisted surgery (CAS) are: increase of accuracy of surgical interventions, less invasive operations, better planning and simulation and reduction of radiation

  13. State of the art and an integrated proposal to assess the energy gap in the implementation of cogeneration in industrial sector

    International Nuclear Information System (INIS)

    Escudero A, Ana C; Botero B, Sergio

    2009-01-01

    This paper shows the state of the art of decision making methodologies and theories that are in the literature and address topics related to the implementation of cogeneration systems. These topics are energy efficiency, new technologies adoption. These are analyzed in how they try to explain a complex phenomenon such as the energy gap (low implementation of technically and economically feasible energy efficiency projects), and classifying them in four methodological approaches. Based on the analysis of these approaches, a conceptual proposal is proposed, setting the decision maker as the central object of study, and the real (not the ideal) decision making process as a mechanism that facilitates the identification and understanding of the phenomenon from the bounded rationality principles.

  14. FIPRED state of art

    International Nuclear Information System (INIS)

    Ohai, D.; Meleg, T.; Dumitrescu, I.; Benga, D.

    2009-01-01

    Full text: The paper presents the FIPRED (Fission Product Release from Debris Bed) Project state of art (UO 2 sintered pellets oxidation). The FIPRED Project is dedicated to the study of the fission products released from irradiated pellets present in debris bed. The fission product release is produced by oxidative self disintegration of sintered pellets at air ingress and it depends on temperature. The experimental program covered experiments of 300-1400 deg. C in air diluted with nitrogen at different concentrations of oxygen and different steam-air mixture. The experiments were performed using the SETARAM thermo-gravimetric equipment and the FIPRED EQ equipment designed and manufactured especially for this type of experiment. The powders (fragments), resulted from UO 2 pellets self disintegration, were characterized by sieving and SEM. The self disintegration mechanism was demonstrated using the experimental result obtained and thermodynamically data of uranium oxides. (authors)

  15. Native American Arts and Crafts of the United States. Bibliography 1.

    Science.gov (United States)

    Indian Arts and Crafts Board, Washington, DC.

    The selected readings listed in this annotated bibliography are suggested as an introduction to the varied arts and crafts created from prehistoric to modern times by Native American peoples of the United States. The publications are organized by culture area to encompass major media practiced by Native American artists and craftsmen of these…

  16. Grate monitoring systems, state of the art; Metoder foer rosteroevervakning, dagslaegesbestaemning

    Energy Technology Data Exchange (ETDEWEB)

    Blom, Elisabet [Aaf Processdesign AB, Linkoeping (Sweden)

    2001-01-01

    During a number of years research and development projects have been made to present methods of monitoring the grate in a grate fired boiler. The monitoring is interesting in order to be able to increase efficiency, increase burn-out of ash, improve the status of emissions, improve transportation of ash and fuel through the furnace, reduce costs for operation and maintenance, handle greater loads etc. Improvement of the combustion has been concentrated to the development of the gas phase combustion. In the past few years the computer development has progressed rapidly and the use of optical monitoring methods have been made possible for monitoring grates. To analyse state of the art of optical grate monitoring systems three different methods have been used, literature search, inquiry where plant owners were asked if they have used grate monitoring systems and if so what experiences they have, and interviews with scientists and users. The inquiry investigation was made during spring 2000 and supplemented with a few known users of grate monitoring systems in august 2000. The interviews were made during august 2000. The methods which have been examined are: Video monitoring; Computer vision; IR-pyrometry; IR-camera technology; Laser measuring methods; Acoustic pyrometry. The survey showed that video monitoring is useful to monitor the fuel bed and an aid to the operators. A good cooling and cleansing system is essential to make the system reliable. If the system is aided with computer vision the computer will show numbers which can be used in the control system. These have been tried at a couple of sites but the system is still being developed and no sites uses this function fully automated. Infrared measurements have been tried in number of research projects. The IR-pyrometer technique is good for measuring temperature but the reliability is too low for some of the users. IR-cameras are used in several waste incineration plants to control the combustion. The systems

  17. State-of-the-art review of some artificial intelligence applications in pile foundations

    Directory of Open Access Journals (Sweden)

    Mohamed A. Shahin

    2016-01-01

    Full Text Available Geotechnical engineering deals with materials (e.g. soil and rock that, by their very nature, exhibit varied and uncertain behavior due to the imprecise physical processes associated with the formation of these materials. Modeling the behavior of such materials in geotechnical engineering applications is complex and sometimes beyond the ability of most traditional forms of physically-based engineering methods. Artificial intelligence (AI is becoming more popular and particularly amenable to modeling the complex behavior of most geotechnical engineering applications because it has demonstrated superior predictive ability compared to traditional methods. This paper provides state-of-the-art review of some selected AI techniques and their applications in pile foundations, and presents the salient features associated with the modeling development of these AI techniques. The paper also discusses the strength and limitations of the selected AI techniques compared to other available modeling approaches.

  18. Electrostatic Discharge (ESD and Electrical Overstress (EOS: The state of the art in components to systems

    Directory of Open Access Journals (Sweden)

    Steven H. Voldman

    2017-06-01

    Full Text Available Electrostatic Discharge (ESD, Electrical Overstress (EOS and electromagnetic compatibility (EMC continue to impact semiconductor manufacturing, semiconductor components and systems as technologies scale from micro- to nano-electronics. The range of concern for components include semiconductor components, magnetic recording industry, MEMs, and for products from disk drives, cell phones, notebooks, tablets, laptops, and desktop computers. The objective of this lecture is to address the state of the art of electrostatic discharge (ESD and electrical overstress (EOS in today’s electronic components and systems. The tutorial provides a clear picture of ESD, EOS and EMC phenomena, sources, physics, failure mechanisms, testing and qualification of components and systems. The conclusion of this talk is that ESD and EOS continue to be a concern in technologies from micro-electronics to nano-structures, and will remain a reliability and quality issue in the future.

  19. Entrepreneurship Education: State of the Art

    Directory of Open Access Journals (Sweden)

    José Carlos Sánchez García

    2017-10-01

    Full Text Available Job uncertainty and ambiguity is a reality in many current societies, therefore, the idea of self-employment has taken a more active role, not only out of necessity, but also because it brings innovation and development to societies. In view of this situation, the following question arises: how can we strengthen the entrepreneurial spirit of our students? This article has the objective to collect theoretical information of the state of the art on entrepreneurship education: what it has been, what it is, and what can it be, in order to present the current condition of the topic, both in the psychological and pedagogical field. To achieve this objective, information from 108 research sources, mainly from scientific articles and books was collected, concluding that, although generally, entrepreneurship education has significantly contributed to the creation of businesses, developing countries, specifically, those in Latin America, still require extra effort to fully implement entrepreneurship topic in the curriculums, particularly because of challenges such as political instability, technology and international competition.

  20. State Arts Agencies 1965-2003. Whose Interests to Serve?

    National Research Council Canada - National Science Library

    Lowell, Julia

    2004-01-01

    ... (referred to as state arts agencies, or SAAs). In fiscal year (FY) 2003, a record 43 of 56 SAAs reported year-over-year declines in the general fund appropriations budgeted to them by their state legislatures...

  1. Trends in Continuity and Interpolation for Computer Graphics.

    Science.gov (United States)

    Gonzalez Garcia, Francisco

    2015-01-01

    In every computer graphics oriented application today, it is a common practice to texture 3D models as a way to obtain realistic material. As part of this process, mesh texturing, deformation, and visualization are all key parts of the computer graphics field. This PhD dissertation was completed in the context of these three important and related fields in computer graphics. The article presents techniques that improve on existing state-of-the-art approaches related to continuity and interpolation in texture space (texturing), object space (deformation), and screen space (rendering).

  2. Cluster-based localization and tracking in ubiquitous computing systems

    CERN Document Server

    Martínez-de Dios, José Ramiro; Torres-González, Arturo; Ollero, Anibal

    2017-01-01

    Localization and tracking are key functionalities in ubiquitous computing systems and techniques. In recent years a very high variety of approaches, sensors and techniques for indoor and GPS-denied environments have been developed. This book briefly summarizes the current state of the art in localization and tracking in ubiquitous computing systems focusing on cluster-based schemes. Additionally, existing techniques for measurement integration, node inclusion/exclusion and cluster head selection are also described in this book.

  3. Giant magnetoresistance (GMR) sensors from basis to state-of-the-art applications

    CERN Document Server

    Reig, Candid; Mukhopadhyay, Subhas Chandra

    2013-01-01

    Since the discovery of the giant magnetoresistance (GMR) effect in 1988, spintronics has been presented as a new technology paradigm, awarded by the Nobel Prize in Physics in 2007. Initially used in read heads of hard disk drives, and while disputing a piece of the market to the flash memories, GMR devices have broadened their range of usage by growing towards magnetic field sensing applications in a huge range of scenarios. Potential applications at the time of the discovery have become real in the last two decades. Definitively, GMR was born to stand. In this sense, selected successful approaches of GMR based sensors in different applications: space, automotive, microelectronics, biotechnology … are collected in the present book. While keeping a practical orientation, the fundamentals as well as the current trends and challenges of this technology are also analyzed. In this sense, state of the art contributions from academy and industry can be found through the contents. This book can be used by starting ...

  4. State-of-the-art report on radioactive waste disposal

    International Nuclear Information System (INIS)

    Larsson, A.

    1989-01-01

    In view of the considerable work required to develop repositories for radioactive waste, an extensive international co-operation has evolved within the area. The work has also engaged the IAEA to a great extent. The Agency has published a number of reports, covering different aspects of waste disposal. Following a recommendation by its Technical Review Committee on Underground Disposal (TRCUD) the Agency will publish a ''state-of-the-art'' report on radioactive waste disposal. The report is still in the preparation stage. In this article the principal subjects of the future report are discussed

  5. Pragmatics: The State of the Art: An Online Interview with Keith Allan

    Science.gov (United States)

    Allan, Keith; Salmani Nodoushan, Mohammad Ali

    2015-01-01

    This interview was conducted with Professor Keith Allan with the aim of providing a brief but informative summary of the state of the art of pragmatics. In providing answers to the interview questions, Professor Allan begins with a definition of pragmatics as it is practiced today, i.e., the study of the meanings of utterances with attention to…

  6. Arts-Based Research: Trojan Horses and Shibboleths. The Liabilities of a Hybrid Research Approach. "What Hath Eisner Wrought?"

    Science.gov (United States)

    Pariser, David

    2009-01-01

    The term "arts-based research" has been debated for some time now. In an article strongly in favor of this approach Bean (2007) identifies three species: "Research on the arts (italics in the original) (art history, visual and cultural studies, media studies etc.)...Research for the arts, refers to research into applied techniques, materials and…

  7. Reduced order methods for modeling and computational reduction

    CERN Document Server

    Rozza, Gianluigi

    2014-01-01

    This monograph addresses the state of the art of reduced order methods for modeling and computational reduction of complex parametrized systems, governed by ordinary and/or partial differential equations, with a special emphasis on real time computing techniques and applications in computational mechanics, bioengineering and computer graphics.  Several topics are covered, including: design, optimization, and control theory in real-time with applications in engineering; data assimilation, geometry registration, and parameter estimation with special attention to real-time computing in biomedical engineering and computational physics; real-time visualization of physics-based simulations in computer science; the treatment of high-dimensional problems in state space, physical space, or parameter space; the interactions between different model reduction and dimensionality reduction approaches; the development of general error estimation frameworks which take into account both model and discretization effects. This...

  8. The Phylogeny and Ontogeny of Art.

    Science.gov (United States)

    Youngblood, Michael S.

    1987-01-01

    Argues all humans are profoundly capable of learning about, appreciating, and making art. Points out that for decades educators have stressed a nondirective approach to elementary art education in order to encourage self-expression. Concludes this approach should be re-examined; that art educators must constructively criticize children's art and…

  9. State of the art in power cable design, failure mechanisms and testing

    International Nuclear Information System (INIS)

    Orton, H.

    2005-01-01

    This presentation describes state of the art in power cable design, failure mechanisms and testing. It gives a history of cable usage and design of cables, describes different cable types, assessment of the condition of cables, aging and failures, testing and diagnostics

  10. Creative Approaches to Information Literacy for Creative Arts Students

    Science.gov (United States)

    Appleton, Leo; Grandal Montero, Gustavo; Jones, Abigail

    2017-01-01

    This paper discusses the information literacy requirements of art and design students, and how traditional approaches to information literacy education are not always appropriate for these particular students. The paper argues that different, creative, and innovative approaches to information literacy training need to be developed with the…

  11. Macro-defect free cements. State of art

    International Nuclear Information System (INIS)

    Holanda, J.N.F.; Povoa, G.E.A.M.; Souza, G.P.; Pinatti, D.G.

    1998-01-01

    The purpose of this work is to prevent a state of art about macro-defect-free cement pastes (MDF cement ) of high mechanical strength. This new type of cement paste is obtained through addition of a water-soluble polymer, followed by intense shear mixing and application of low compacting pressure. It is presented fundamental aspects related to the processing of this MDF paste, as well as its main properties and applications are discussed. (author)

  12. Merging the Internet and Hypermedia in the English Language Arts.

    Science.gov (United States)

    Reed, W. Michael; Wells, John G.

    1997-01-01

    Discussion of hypermedia and computer-mediated communication focuses on a project that merges a language arts Internet resource with a hypermedia-based knowledge construction approach to learning. Highlights include constructing a HyperCard-based program on Shakespeare's "Hamlet," gophers and search engines, downloading, collaborative…

  13. Systems Bioinformatics: increasing precision of computational diagnostics and therapeutics through network-based approaches.

    Science.gov (United States)

    Oulas, Anastasis; Minadakis, George; Zachariou, Margarita; Sokratous, Kleitos; Bourdakou, Marilena M; Spyrou, George M

    2017-11-27

    Systems Bioinformatics is a relatively new approach, which lies in the intersection of systems biology and classical bioinformatics. It focuses on integrating information across different levels using a bottom-up approach as in systems biology with a data-driven top-down approach as in bioinformatics. The advent of omics technologies has provided the stepping-stone for the emergence of Systems Bioinformatics. These technologies provide a spectrum of information ranging from genomics, transcriptomics and proteomics to epigenomics, pharmacogenomics, metagenomics and metabolomics. Systems Bioinformatics is the framework in which systems approaches are applied to such data, setting the level of resolution as well as the boundary of the system of interest and studying the emerging properties of the system as a whole rather than the sum of the properties derived from the system's individual components. A key approach in Systems Bioinformatics is the construction of multiple networks representing each level of the omics spectrum and their integration in a layered network that exchanges information within and between layers. Here, we provide evidence on how Systems Bioinformatics enhances computational therapeutics and diagnostics, hence paving the way to precision medicine. The aim of this review is to familiarize the reader with the emerging field of Systems Bioinformatics and to provide a comprehensive overview of its current state-of-the-art methods and technologies. Moreover, we provide examples of success stories and case studies that utilize such methods and tools to significantly advance research in the fields of systems biology and systems medicine. © The Author 2017. Published by Oxford University Press.

  14. UNIQUE EXAMPLE OF MODERN CERAMIC ART IN THE UNITED STATES OF AMERICA: BONNIE SEEMAN

    Directory of Open Access Journals (Sweden)

    Gul Erbay Asliturk

    2016-04-01

    Full Text Available The purpose of this study is to examine the life and artwork of Bonnie Seeman from U.S.A. and to comment on her place in modern ceramic art. The area of study is composed of Bonnie Seeman’s artwork. Therefore, the researcher conducted an interview at the artist’s workshop. The artist’s life was recorded firsthand as told by herself as well as the shape, technique and essence of her art. The researcher determined that Bonnie Seeman was preferring forms of daily-use ceramics when the information told by the artist, the artworks in collections and the literature about the artist were considered. In addition, she succeed to be included in modern American ceramic art with her grotesque approach of producing traditional forms, which were caused by her loosing loved ones and experiencing health problems during her early art life.

  15. A survey of process control computers at the Idaho Chemical Processing Plant

    International Nuclear Information System (INIS)

    Dahl, C.A.

    1989-01-01

    The Idaho Chemical Processing Plant (ICPP) at the Idaho National Engineering Laboratory is charged with the safe processing of spent nuclear fuel elements for the United States Department of Energy. The ICPP was originally constructed in the late 1950s and used state-of-the-art technology for process control at that time. The state of process control instrumentation at the ICPP has steadily improved to keep pace with emerging technology. Today, the ICPP is a college of emerging computer technology in process control with some systems as simple as standalone measurement computers while others are state-of-the-art distributed control systems controlling the operations in an entire facility within the plant. The ICPP has made maximal use of process computer technology aimed at increasing surety, safety, and efficiency of the process operations. Many benefits have been derived from the use of the computers for minimal costs, including decreased misoperations in the facility, and more benefits are expected in the future

  16. Protocol for a systematic review of the use of narrative storytelling and visual-arts-based approaches as knowledge translation tools in healthcare

    Science.gov (United States)

    2013-01-01

    Background The arts are powerful, accessible forms of communication that have the potential to impart knowledge by attracting interest and developing meaningful connections. Knowledge translation aims to reduce the ‘evidence-practice’ gap by developing, implementing and evaluating strategies designed to enhance awareness and promote behavior change congruent with research evidence. Increasingly, innovative approaches such as narrative storytelling and other arts-based interventions are being investigated to bridge the growing gap between practice and research. This study is the first to systematically identify and synthesize current research on narrative storytelling and visual art to translate and disseminate health research. Methods A health research librarian will develop and implement search strategies designed to identify relevant evidence. Studies will be included if they are primary research employing narrative storytelling and/or visual art as a knowledge translation strategy in healthcare. Two reviewers will independently perform study selection, quality assessment, and data extraction using standard forms. Disagreements will be resolved through discussion or third party adjudication. Data will be grouped and analyzed by research design, type of knowledge translation strategy (that is, a narrative or visual-arts-based approach), and target audience. An overall synthesis across all studies will be conducted. Discussion The findings from this research project will describe thestate of the science’ regarding the use of narrative storytelling and visual art as knowledge translation strategies. This systematic review will provide critical information for: (1) researchers conducting knowledge translation intervention studies; (2) nursing, medicine, and allied healthcare professionals; (3) healthcare consumers, including patients and families; and (4) decision makers and knowledge users who are charged to increase use of the latest research in

  17. Protocol for a systematic review of the use of narrative storytelling and visual-arts-based approaches as knowledge translation tools in healthcare.

    Science.gov (United States)

    Scott, Shannon D; Brett-MacLean, Pamela; Archibald, Mandy; Hartling, Lisa

    2013-03-20

    The arts are powerful, accessible forms of communication that have the potential to impart knowledge by attracting interest and developing meaningful connections. Knowledge translation aims to reduce the 'evidence-practice' gap by developing, implementing and evaluating strategies designed to enhance awareness and promote behavior change congruent with research evidence. Increasingly, innovative approaches such as narrative storytelling and other arts-based interventions are being investigated to bridge the growing gap between practice and research. This study is the first to systematically identify and synthesize current research on narrative storytelling and visual art to translate and disseminate health research. A health research librarian will develop and implement search strategies designed to identify relevant evidence. Studies will be included if they are primary research employing narrative storytelling and/or visual art as a knowledge translation strategy in healthcare. Two reviewers will independently perform study selection, quality assessment, and data extraction using standard forms. Disagreements will be resolved through discussion or third party adjudication. Data will be grouped and analyzed by research design, type of knowledge translation strategy (that is, a narrative or visual-arts-based approach), and target audience. An overall synthesis across all studies will be conducted. The findings from this research project will describe the 'state of the science' regarding the use of narrative storytelling and visual art as knowledge translation strategies. This systematic review will provide critical information for: (1) researchers conducting knowledge translation intervention studies; (2) nursing, medicine, and allied healthcare professionals; (3) healthcare consumers, including patients and families; and (4) decision makers and knowledge users who are charged to increase use of the latest research in healthcare settings.

  18. Software Systems for High-performance Quantum Computing

    Energy Technology Data Exchange (ETDEWEB)

    Humble, Travis S [ORNL; Britt, Keith A [ORNL

    2016-01-01

    Quantum computing promises new opportunities for solving hard computational problems, but harnessing this novelty requires breakthrough concepts in the design, operation, and application of computing systems. We define some of the challenges facing the development of quantum computing systems as well as software-based approaches that can be used to overcome these challenges. Following a brief overview of the state of the art, we present models for the quantum programming and execution models, the development of architectures for hybrid high-performance computing systems, and the realization of software stacks for quantum networking. This leads to a discussion of the role that conventional computing plays in the quantum paradigm and how some of the current challenges for exascale computing overlap with those facing quantum computing.

  19. Bidirectional Texture Function Modeling: State of the Art Survey

    Czech Academy of Sciences Publication Activity Database

    Filip, Jiří; Haindl, Michal

    2009-01-01

    Roč. 31, č. 11 (2009), s. 1921-1940 ISSN 0162-8828 R&D Projects: GA MŠk 1M0572; GA ČR GA102/08/0593; GA AV ČR 1ET400750407 Grant - others:EC Marie Curie(BE) 41358; GA MŠk(CZ) 2C06019 Institutional research plan: CEZ:AV0Z10750506 Keywords : BTF * surface texture * 3D texture Subject RIV: BD - Theory of Information Impact factor: 4.378, year: 2009 http://library.utia.cas.cz/separaty/2009/RO/filip-bidirectional texture function modeling state of the art survey.pdf

  20. From computer-assisted intervention research to clinical impact: The need for a holistic approach.

    Science.gov (United States)

    Ourselin, Sébastien; Emberton, Mark; Vercauteren, Tom

    2016-10-01

    The early days of the field of medical image computing (MIC) and computer-assisted intervention (CAI), when publishing a strong self-contained methodological algorithm was enough to produce impact, are over. As a community, we now have substantial responsibility to translate our scientific progresses into improved patient care. In the field of computer-assisted interventions, the emphasis is also shifting from the mere use of well-known established imaging modalities and position trackers to the design and combination of innovative sensing, elaborate computational models and fine-grained clinical workflow analysis to create devices with unprecedented capabilities. The barriers to translating such devices in the complex and understandably heavily regulated surgical and interventional environment can seem daunting. Whether we leave the translation task mostly to our industrial partners or welcome, as researchers, an important share of it is up to us. We argue that embracing the complexity of surgical and interventional sciences is mandatory to the evolution of the field. Being able to do so requires large-scale infrastructure and a critical mass of expertise that very few research centres have. In this paper, we emphasise the need for a holistic approach to computer-assisted interventions where clinical, scientific, engineering and regulatory expertise are combined as a means of moving towards clinical impact. To ensure that the breadth of infrastructure and expertise required for translational computer-assisted intervention research does not lead to a situation where the field advances only thanks to a handful of exceptionally large research centres, we also advocate that solutions need to be designed to lower the barriers to entry. Inspired by fields such as particle physics and astronomy, we claim that centralised very large innovation centres with state of the art technology and health technology assessment capabilities backed by core support staff and open

  1. An Inquiry of How Art Education Policies Are Reflected in Art Teacher Preparation: Examining the Standards for Visual Arts and Art Teacher Certification

    Science.gov (United States)

    Lim, Kyungeun

    2017-01-01

    Policy changes influence various aspects of art education such as K-12 art education curricula, state licensure systems, and contexts of art teacher preparation. Despite strong relationships between art education policy and practical fields, few studies have attempted to understand art education from the perspective of policy analysis. This study…

  2. Probabilistic safety analysis and risk-based inspection of nuclear research reactors: state-of-the-art and implementation proposal

    Energy Technology Data Exchange (ETDEWEB)

    Marques, Raíssa O.; Vasceoncelos, Vanderley de; Soares, Wellington A.; Silva Júnior, Silvério F.; Raso, Amanda L.; Mesquita, Amir Z., E-mail: raissaomarques@gmail.com, E-mail: vasconv@cdtn.br, E-mail: soaresw@cdtn.br, E-mail: silvasf@cdtn.br, E-mail: amandaraso@hotmail.com, E-mail: amir@cdtn.br [Centro de Desenvolvimento da Tecnologia Nuclear (CDTN/CNEN-MG), Belo Horizonte, MG (Brazil)

    2017-07-01

    Industrial facilities systems deteriorate over time during operation, thus increasing the possibility of accidents. Risk-Based Inspection (RBI) classifies such systems by their risk information with the purpose of prioritizing inspection efforts. RBI can reduce inspection activities, resulting in lower risk levels, and maintaining reliability and safety in acceptable levels. Risk-Informed In-Service Inspection (RI-ISI) is a RBI approach used in nuclear industry. RI-ISI uses outcomes from Probabilistic Safety Analysis (PSA) of Nuclear Power Plants (NPP) to plan In-Service Inspections (ISI). Despite nuclear research reactors are simpler and have lower risks than power reactors, the application of PSA to them may be useful for safety improvements once they are more flexible, provide easier access to its core, and allow changes in fuel configurations in case of experimental tests. Ageing management of structures, systems and components important to safety of a nuclear research reactor throughout its lifetime is also required to assure continued adequacy of safety levels, reliable operation, and compliance with operational limits and conditions. This includes periodic review of ISI programs in which monitoring of material deterioration and aging effects are considered, and that can be supported by the RBI approach. A review of state-of-the-art of PSA and RBI applications to nuclear reactors is presented in this work. Advantages to apply these methodologies are also analyzed. PSA and RBI implementation proposal applied to nuclear research reactors is also presented, as well as its application to a TRIGA research nuclear reactor using computer codes developed by ReliaSoft® Corporation. (author)

  3. Probabilistic safety analysis and risk-based inspection of nuclear research reactors: state-of-the-art and implementation proposal

    International Nuclear Information System (INIS)

    Marques, Raíssa O.; Vasceoncelos, Vanderley de; Soares, Wellington A.; Silva Júnior, Silvério F.; Raso, Amanda L.; Mesquita, Amir Z.

    2017-01-01

    Industrial facilities systems deteriorate over time during operation, thus increasing the possibility of accidents. Risk-Based Inspection (RBI) classifies such systems by their risk information with the purpose of prioritizing inspection efforts. RBI can reduce inspection activities, resulting in lower risk levels, and maintaining reliability and safety in acceptable levels. Risk-Informed In-Service Inspection (RI-ISI) is a RBI approach used in nuclear industry. RI-ISI uses outcomes from Probabilistic Safety Analysis (PSA) of Nuclear Power Plants (NPP) to plan In-Service Inspections (ISI). Despite nuclear research reactors are simpler and have lower risks than power reactors, the application of PSA to them may be useful for safety improvements once they are more flexible, provide easier access to its core, and allow changes in fuel configurations in case of experimental tests. Ageing management of structures, systems and components important to safety of a nuclear research reactor throughout its lifetime is also required to assure continued adequacy of safety levels, reliable operation, and compliance with operational limits and conditions. This includes periodic review of ISI programs in which monitoring of material deterioration and aging effects are considered, and that can be supported by the RBI approach. A review of state-of-the-art of PSA and RBI applications to nuclear reactors is presented in this work. Advantages to apply these methodologies are also analyzed. PSA and RBI implementation proposal applied to nuclear research reactors is also presented, as well as its application to a TRIGA research nuclear reactor using computer codes developed by ReliaSoft® Corporation. (author)

  4. State of the art on historic building insulation materials and retrofit strategies

    DEFF Research Database (Denmark)

    Blumberga, Andra; Kass, Kristaps; Kamendere, Edite

    2016-01-01

    This report provides an analysis and evaluation of a state-of-the-art of internal insulation materials and methods for application in historic buildings, and review on methods, tools and guidelines used as decision making tools for implementation of internal insulation in historic buildings. Hist...

  5. Critical Analysis of Underground Coal Gasification Models. Part II: Kinetic and Computational Fluid Dynamics Models

    Directory of Open Access Journals (Sweden)

    Alina Żogała

    2014-01-01

    Originality/value: This paper presents state of art in the field of coal gasification modeling using kinetic and computational fluid dynamics approach. The paper also presents own comparative analysis (concerned with mathematical formulation, input data and parameters, basic assumptions, obtained results etc. of the most important models of underground coal gasification.

  6. Transitions in the computational power of thermal states for measurement-based quantum computation

    International Nuclear Information System (INIS)

    Barrett, Sean D.; Bartlett, Stephen D.; Jennings, David; Doherty, Andrew C.; Rudolph, Terry

    2009-01-01

    We show that the usefulness of the thermal state of a specific spin-lattice model for measurement-based quantum computing exhibits a transition between two distinct 'phases' - one in which every state is a universal resource for quantum computation, and another in which any local measurement sequence can be simulated efficiently on a classical computer. Remarkably, this transition in computational power does not coincide with any phase transition, classical, or quantum in the underlying spin-lattice model.

  7. Modeling surface topography of state-of-the-art x-ray mirrors as a result of stochastic polishing process: recent developments

    Science.gov (United States)

    Yashchuk, Valeriy V.; Centers, Gary; Tyurin, Yuri N.; Tyurina, Anastasia

    2016-09-01

    Recently, an original method for the statistical modeling of surface topography of state-of-the-art mirrors for usage in xray optical systems at light source facilities and for astronomical telescopes [Opt. Eng. 51(4), 046501, 2012; ibid. 53(8), 084102 (2014); and ibid. 55(7), 074106 (2016)] has been developed. In modeling, the mirror surface topography is considered to be a result of a stationary uniform stochastic polishing process and the best fit time-invariant linear filter (TILF) that optimally parameterizes, with limited number of parameters, the polishing process is determined. The TILF model allows the surface slope profile of an optic with a newly desired specification to be reliably forecast before fabrication. With the forecast data, representative numerical evaluations of expected performance of the prospective mirrors in optical systems under development become possible [Opt. Eng., 54(2), 025108 (2015)]. Here, we suggest and demonstrate an analytical approach for accounting the imperfections of the used metrology instruments, which are described by the instrumental point spread function, in the TILF modeling. The efficacy of the approach is demonstrated with numerical simulations for correction of measurements performed with an autocollimator based surface slope profiler. Besides solving this major metrological problem, the results of the present work open an avenue for developing analytical and computational tools for stitching data in the statistical domain, obtained using multiple metrology instruments measuring significantly different bandwidths of spatial wavelengths.

  8. Plugging wells for abandonment: a state-of-the-art study and recommended procedures

    International Nuclear Information System (INIS)

    Herndon, J.; Smith, D.K.

    1976-09-01

    The state-of-the-art of borehole plugging of abandoned oil wells and the tools and materials used are discussed. Special problems encountered are considered and several case studies are outlined. The special procedures which must be followed if the plugged borehole is to be considered as a repository for radioactive wastes are discussed and special recommendations are made. A state-by-state summary is given of the regulatory requirements for borehole plugging

  9. Knowledge discovery in traditional Chinese medicine: state of the art and perspectives.

    Science.gov (United States)

    Feng, Yi; Wu, Zhaohui; Zhou, Xuezhong; Zhou, Zhongmei; Fan, Weiyu

    2006-11-01

    As a complementary medical system to Western medicine, traditional Chinese medicine (TCM) provides a unique theoretical and practical approach to the treatment of diseases over thousands of years. Confronted with the increasing popularity of TCM and the huge volume of TCM data, historically accumulated and recently obtained, there is an urgent need to explore these resources effectively by the techniques of knowledge discovery in database (KDD). This paper aims at providing an overview of recent KDD studies in TCM field. A literature search was conducted in both English and Chinese publications, and major studies of knowledge discovery in TCM (KDTCM) reported in these materials were identified. Based on an introduction to the state of the art of TCM data resources, a review of four subfields of KDTCM research was presented, including KDD for the research of Chinese medical formula, KDD for the research of Chinese herbal medicine, KDD for TCM syndrome research, and KDD for TCM clinical diagnosis. Furthermore, the current state and main problems in each subfield were summarized based on a discussion of existing studies, and future directions for each subfield were also proposed accordingly. A series of KDD methods are used in existing KDTCM researches, ranging from conventional frequent itemset mining to state of the art latent structure model. Considerable interesting discoveries are obtained by these methods, such as novel TCM paired drugs discovered by frequent itemset analysis, functional community of related genes discovered under syndrome perspective by text mining, the high proportion of toxic plants in the botanical family Ranunculaceae disclosed by statistical analysis, the association between M-cholinoceptor blocking drug and Solanaceae revealed by association rule mining, etc. It is particularly inspiring to see some studies connecting TCM with biomedicine, which provide a novel top-down view for functional genomics research. However, further developments

  10. Nuclear scanning microprobe: state of the art, applications and progress trends

    International Nuclear Information System (INIS)

    Ponomarev, A.G.

    2011-01-01

    The physical principles of nuclear scanning microprobe are considered. The analysis of state of the art of the microprobe setup from point of view of its spatial resolution and sensitivity of microanalysis techniques is given. The regions of nuclear microprobe applications are reviewed. The ways of spatial resolution and data acquisition system improvement under consideration of microprobe setup progress trends are considered. (authors)

  11. State of the art of environmentally friendly sample preparation approaches for determination of PBDEs and metabolites in environmental and biological samples: A critical review.

    Science.gov (United States)

    Berton, Paula; Lana, Nerina B; Ríos, Juan M; García-Reyes, Juan F; Altamirano, Jorgelina C

    2016-01-28

    Green chemistry principles for developing methodologies have gained attention in analytical chemistry in recent decades. A growing number of analytical techniques have been proposed for determination of organic persistent pollutants in environmental and biological samples. In this light, the current review aims to present state-of-the-art sample preparation approaches based on green analytical principles proposed for the determination of polybrominated diphenyl ethers (PBDEs) and metabolites (OH-PBDEs and MeO-PBDEs) in environmental and biological samples. Approaches to lower the solvent consumption and accelerate the extraction, such as pressurized liquid extraction, microwave-assisted extraction, and ultrasound-assisted extraction, are discussed in this review. Special attention is paid to miniaturized sample preparation methodologies and strategies proposed to reduce organic solvent consumption. Additionally, extraction techniques based on alternative solvents (surfactants, supercritical fluids, or ionic liquids) are also commented in this work, even though these are scarcely used for determination of PBDEs. In addition to liquid-based extraction techniques, solid-based analytical techniques are also addressed. The development of greener, faster and simpler sample preparation approaches has increased in recent years (2003-2013). Among green extraction techniques, those based on the liquid phase predominate over those based on the solid phase (71% vs. 29%, respectively). For solid samples, solvent assisted extraction techniques are preferred for leaching of PBDEs, and liquid phase microextraction techniques are mostly used for liquid samples. Likewise, green characteristics of the instrumental analysis used after the extraction and clean-up steps are briefly discussed. Copyright © 2015 Elsevier B.V. All rights reserved.

  12. Combined Antimicrobial Activity of Photodynamic Inactivation and Antimicrobials–State of the Art

    Directory of Open Access Journals (Sweden)

    Agata Wozniak

    2018-05-01

    Full Text Available Antimicrobial photodynamic inactivation (aPDI is a promising tool for the eradication of life-threatening pathogens with different profiles of resistance. This study presents the state-of-the-art published studies that have been dedicated to analyzing the bactericidal effects of combining aPDI and routinely applied antibiotics in in vitro (using biofilm and planktonic cultures and in vivo experiments. Furthermore, the current paper reviews the methodology used to obtain the published data that describes the synergy between these antimicrobial approaches. The authors are convinced that even though the combined efficacy of aPDI and antimicrobials could be investigated with the wide range of methods, the use of a unified experimental methodology that is in agreement with antimicrobial susceptibility testing (AST is required to investigate possible synergistic cooperation between aPDI and antimicrobials. Conclusions concerning the possible synergistic activity between the two treatments can be drawn only when appropriate assays are employed. It must be noticed that some of the described papers were just aimed at determination if combined treatments exert enhanced antibacterial outcome, without following the standard methodology to evaluate the synergistic effect, but in most of them (18 out of 27 authors indicated the existence of synergy between described antibacterial approaches. In general, the increase in bacterial inactivation was observed when both therapies were used in combination.

  13. An ART iterative reconstruction algorithm for computed tomography of diffraction enhanced imaging

    International Nuclear Information System (INIS)

    Wang Zhentian; Zhang Li; Huang Zhifeng; Kang Kejun; Chen Zhiqiang; Fang Qiaoguang; Zhu Peiping

    2009-01-01

    X-ray diffraction enhanced imaging (DEI) has extremely high sensitivity for weakly absorbing low-Z samples in medical and biological fields. In this paper, we propose an Algebra Reconstruction Technique (ART) iterative reconstruction algorithm for computed tomography of diffraction enhanced imaging (DEI-CT). An Ordered Subsets (OS) technique is used to accelerate the ART reconstruction. Few-view reconstruction is also studied, and a partial differential equation (PDE) type filter which has the ability of edge-preserving and denoising is used to improve the image quality and eliminate the artifacts. The proposed algorithm is validated with both the numerical simulations and the experiment at the Beijing synchrotron radiation facility (BSRF). (authors)

  14. Report of the Subpanel on Theoretical Computing of the High Energy Physics Advisory Panel

    International Nuclear Information System (INIS)

    1984-09-01

    The Subpanel on Theoretical Computing of the High Energy Physics Advisory Panel (HEPAP) was formed in July 1984 to make recommendations concerning the need for state-of-the-art computing for theoretical studies. The specific Charge to the Subpanel is attached as Appendix A, and the full membership is listed in Appendix B. For the purposes of this study, theoretical computing was interpreted as encompassing both investigations in the theory of elementary particles and computation-intensive aspects of accelerator theory and design. Many problems in both areas are suited to realize the advantages of vectorized processing. The body of the Subpanel Report is organized as follows. The Introduction, Section I, explains some of the goals of computational physics as it applies to elementary particle theory and accelerator design. Section II reviews the availability of mainframe supercomputers to researchers in the United States, in Western Europe, and in Japan. Other promising approaches to large-scale computing are summarized in Section III. Section IV details the current computing needs for problems in high energy theory, and for beam dynamics studies. The Subpanel Recommendations appear in Section V. The Appendices attached to this Report give the Charge to the Subpanel, the Subpanel membership, and some background information on the financial implications of establishing a supercomputer center

  15. Neurofeedback therapy for enhancing visual attention: state-of-the-art and challenges

    Directory of Open Access Journals (Sweden)

    Mehdi Ordikhani-Seyedlar

    2016-08-01

    Full Text Available We have witnessed a rapid development of brain-computer interfaces (BCIs linking the brain to external devices. BCIs can be utilized to treat neurological conditions and even to augment brain functions. BCIs offer a promising treatment for mental disorders, including disorders of attention. Here we review the current state of the art and challenges of attention-based BCIs, with a focus on visual attention. Attention-based BCIs utilize electroencephalograms (EEGs or other recording techniques to generate neurofeedback, which patients use to improve their attention, a complex cognitive function. Although progress has been made in the studies of neural mechanisms of attention, extraction of attention-related neural signals needed for BCI operations is a difficult problem. To attain good BCI performance, it is important to select the features of neural activity that represent attentional signals. BCI decoding of attention-related activity may be hindered by the presence of different neural signals. Therefore, BCI accuracy can be improved by signal processing algorithms that dissociate signals of interest from irrelevant activities. Notwithstanding recent progress, optimal processing of attentional neural signals remains a fundamental challenge for the development of efficient therapies for disorders of attention.

  16. State of the art and prospectives of smart rotor control for wind turbines

    International Nuclear Information System (INIS)

    Barlas, T K; Kuik, G A M van

    2007-01-01

    The continued reduction in cost of energy of wind turbines, especially with the increasingly upscaling of the rotor, will require contribution from technology advances in many areas. Reducing loads on the rotor can offer great reduction to the total cost of wind turbines. With the increasing size of wind turbine blades, the need for more sophisticated load control techniques has induced the interest for locally distributed aerodynamic control systems with built-in intelligence on the blades. Such concepts are often named in popular terms 'smart structures' or 'smart rotor control'. This paper focuses on research regarding active rotor control and smart structures for load reduction. It presents an overview of available knowledge and future concepts on the application of active aerodynamic control and smart structures for wind turbine applications. The goal of the paper is to provide a perspective on the current status and future directions of the specific area of research. It comprises a novel attempt to summarize and analyze possible advanced control systems for future wind turbines. The overview builds on existing research on helicopter rotors and expands similar concepts for wind turbine applications, based on ongoing research in the field. Research work has been analyzed through UPWIND project's work package on Smart Rotor Blades and Rotor Control. First, the specifications of unsteady loads, the state of the art of modern control for load reduction and the need for more advanced and detailed active aerodynamic control are analyzed. Also, overview of available knowledge in application of active aerodynamic control on rotating blades, from helicopter research, is provided. Concepts, methods, and achieved results are presented. Furthermore, R and D so far and up-to-date ongoing progress of similar applications for wind turbines are presented. Feasibility studies for wind turbine applications, preliminary performance evaluation and novel computational and

  17. Remote and continuous gamma spectrometry for environmental radiation protection: state of the art technology and perspectives

    International Nuclear Information System (INIS)

    Van Put, Ph.; Lellis, C.; Debauche, A.; Lacroix, J-P.

    2004-01-01

    The instruments technologies for radiological protection of the environment have been considerably enhanced since the last 20 years. From very simple warning bells in the early 80s, the instruments have been sophisticated nowadays to a degree where their performances can be compared to the performances achieved in low level laboratories. This presentation will briefly overview the evolution of these instruments by comparing their technology, their methodology and their performances. Next, it will present the concepts of the state of the art technology in the field of continuous monitoring of the environment. A discussion will follow on the performances and the limitations of this technology. Finally, the presentation will highlight the future perspective of developments by taking into account recent progress in the field of radiation detectors, telecommunication and computer sciences among others. (authors)

  18. Arts-based and creative approaches to dementia care.

    Science.gov (United States)

    McGreevy, Jessica

    2016-02-01

    This article presents a review of arts-based and creative approaches to dementia care as an alternative to antipsychotic medications. While use of antipsychotics may be appropriate for some people, the literature highlights the success of creative approaches and the benefits of their lack of negative side effects associated with antipsychotics. The focus is the use of biographical approaches, music, dance and movement to improve wellbeing, enhance social networks, support inclusive practice and enable participation. Staff must be trained to use these approaches. A case study is presented to demonstrate how creative approaches can be implemented in practice and the outcomes that can be expected when used appropriately.

  19. The artful mind meets art history: toward a psycho-historical framework for the science of art appreciation.

    Science.gov (United States)

    Bullot, Nicolas J; Reber, Rolf

    2013-04-01

    Research seeking a scientific foundation for the theory of art appreciation has raised controversies at the intersection of the social and cognitive sciences. Though equally relevant to a scientific inquiry into art appreciation, psychological and historical approaches to art developed independently and lack a common core of theoretical principles. Historicists argue that psychological and brain sciences ignore the fact that artworks are artifacts produced and appreciated in the context of unique historical situations and artistic intentions. After revealing flaws in the psychological approach, we introduce a psycho-historical framework for the science of art appreciation. This framework demonstrates that a science of art appreciation must investigate how appreciators process causal and historical information to classify and explain their psychological responses to art. Expanding on research about the cognition of artifacts, we identify three modes of appreciation: basic exposure to an artwork, the artistic design stance, and artistic understanding. The artistic design stance, a requisite for artistic understanding, is an attitude whereby appreciators develop their sensitivity to art-historical contexts by means of inquiries into the making, authorship, and functions of artworks. We defend and illustrate the psycho-historical framework with an analysis of existing studies on art appreciation in empirical aesthetics. Finally, we argue that the fluency theory of aesthetic pleasure can be amended to meet the requirements of the framework. We conclude that scientists can tackle fundamental questions about the nature and appreciation of art within the psycho-historical framework.

  20. State of the art toward defining the role of radiation therapy in the management of small cell bronchogenic carcinoma

    International Nuclear Information System (INIS)

    Salazar, O.M.; Creech, R.H.

    1980-01-01

    This review article with 70 references discusses the state of the art in defining the role of radiotherapy in managing small cell bronchogenic carcinoma (SCBC). It reviews the history of therapeutic approaches to SCBC. Several issues of particular interest to limited disease are discussed. They are: local radiation therapy for limited disease, combined radiation therapy and chemotherapy in limited disease, combination chemotherapy alone for limited disease, and an overview of the treatment of limited disease. A section on extensive disease discusses the role of radiation therapy and chemotherapy, chemotherapy only for extensive disease, and an overview of the treatment of extensive disease. An additional section discusses the use of elective brain irradiation in small cell bronchogenic carcinoma

  1. Modelling and simulation SSM: latest state of the art technology

    CSIR Research Space (South Africa)

    Jahajeeah, N

    2005-10-01

    Full Text Available as one phase ? One Phase model ?Wider volume solid fraction 0 – 1 ? Implementation in Power Law Cut-Off Model (PLCO) of Procast Supporting the Manufacturing and Materials Industry in its quest for global competitiveness Assumptions of the PLCO Model... and Materials Industry in its quest for global competitiveness Modelling and Simulation SSM Latest state of the art technology N Jahajeeah Supporting the Manufacturing and Materials Industry in its quest for global competitiveness BEHAVIOUR OF THIXOTROPIC...

  2. Exploiting stock data: a survey of state of the art computational techniques aimed at producing beliefs regarding investment portfolios

    Directory of Open Access Journals (Sweden)

    Mario Linares Vásquez

    2008-01-01

    Full Text Available Selecting an investment portfolio has inspired several models aimed at optimising the set of securities which an in-vesttor may select according to a number of specific decision criteria such as risk, expected return and planning hori-zon. The classical approach has been developed for supporting the two stages of portfolio selection and is supported by disciplines such as econometrics, technical analysis and corporative finance. However, with the emerging field of computational finance, new and interesting techniques have arisen in line with the need for the automatic processing of vast volumes of information. This paper surveys such new techniques which belong to the body of knowledge con-cerning computing and systems engineering, focusing on techniques particularly aimed at producing beliefs regar-ding investment portfolios.

  3. State of art and perspectives of using renewable energy sources

    International Nuclear Information System (INIS)

    Berkovskij, B.M.; Mikhalevich, A.A.

    1996-01-01

    State of art of renewable energy sources for the beginning of the nineties and perspectives up to 2020 are considered by the forecast of the European Commission. The program of the World Sun Summit up to 1996-2005 is presented

  4. Design and Construction of Computer-Assisted Instructional Material: A Handbook for Reading/Language Arts Teachers.

    Science.gov (United States)

    Balajthy, Ernest

    Intended for reading and language arts teachers at all educational levels, this guide presents information to be used by teachers in constructing their own computer assisted educational software using the BASIC programming language and Apple computers. Part 1 provides an overview of the components of traditional tutorial and drill-and-practice…

  5. Artful creation

    DEFF Research Database (Denmark)

    Darsø, Lotte

    2013-01-01

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

  6. Leadless Pacemakers: State of the Art and Future Perspectives.

    Science.gov (United States)

    Della Rocca, Domenico G; Gianni, Carola; Di Biase, Luigi; Natale, Andrea; Al-Ahmad, Amin

    2018-03-01

    Leadless pacemaker therapy is a new technology that aims at avoiding lead- and pocket-related complications of conventional transvenous and epicardial pacing. To date, 2 self-contained leadless pacemakers for right ventricular pacing have been clinically available: the Nanostim Leadless Pacemaker System and the Micra Transcatheter Pacing System. Additionally, a new multicomponent leadless pacemaker for endocardial left ventricular pacing has been proposed as an alternative choice for cardiac resynchronization therapy. In this review, we describe the state of the art of leadless pacing and compare the currently available devices with traditional transvenous leadless pacemakers. Copyright © 2017 Elsevier Inc. All rights reserved.

  7. New Approaches to the Computer Simulation of Amorphous Alloys: A Review.

    Science.gov (United States)

    Valladares, Ariel A; Díaz-Celaya, Juan A; Galván-Colín, Jonathan; Mejía-Mendoza, Luis M; Reyes-Retana, José A; Valladares, Renela M; Valladares, Alexander; Alvarez-Ramirez, Fernando; Qu, Dongdong; Shen, Jun

    2011-04-13

    In this work we review our new methods to computer generate amorphous atomic topologies of several binary alloys: SiH, SiN, CN; binary systems based on group IV elements like SiC; the GeSe 2 chalcogenide; aluminum-based systems: AlN and AlSi, and the CuZr amorphous alloy. We use an ab initio approach based on density functionals and computationally thermally-randomized periodically-continued cells with at least 108 atoms. The computational thermal process to generate the amorphous alloys is the undermelt-quench approach, or one of its variants, that consists in linearly heating the samples to just below their melting (or liquidus) temperatures, and then linearly cooling them afterwards. These processes are carried out from initial crystalline conditions using short and long time steps. We find that a step four-times the default time step is adequate for most of the simulations. Radial distribution functions (partial and total) are calculated and compared whenever possible with experimental results, and the agreement is very good. For some materials we report studies of the effect of the topological disorder on their electronic and vibrational densities of states and on their optical properties.

  8. The NASA computer science research program plan

    Science.gov (United States)

    1983-01-01

    A taxonomy of computer science is included, one state of the art of each of the major computer science categories is summarized. A functional breakdown of NASA programs under Aeronautics R and D, space R and T, and institutional support is also included. These areas were assessed against the computer science categories. Concurrent processing, highly reliable computing, and information management are identified.

  9. State of art of nanotechnology applications in the meat chain: A qualitative synthesis.

    Science.gov (United States)

    Belluco, Simone; Gallocchio, Federica; Losasso, Carmen; Ricci, Antonia

    2018-05-03

    Nanotechnology is a promising area in industry with a broad range of applications including in the agri-food sector. Several studies have investigated the potential benefits deriving from use of nanomaterials in the context of the whole food chain drawing scenarios of benefits but also potential for concerns. Among the agri-food sector, animal production has potential for nanomaterial application but also for safety concerns due to the possibility of nanomaterial accumulation along the farm-to-fork path. Scope and Approach: The aim of this work was to define the state of the art of nanomaterial applications in the animal production sector by assessing data belonging to recently publishes studies. To do this, a qualitative synthesis approach was applied to build a fit-for-purpose framework and to summarise relevant themes in the context of effectiveness, feasibility and health concerns. Key findings and conclusions: Nanomaterials have potential for use in a wide range of applications from feed production and farming to food packaging, including several detection tools designed for the benefit of consumer protection. The current high degree of variability in nanomaterials tested and in study designs impairs external validation of research results. Further research is required to clearly define which safe nanomaterial applications have the potential to reach the market.

  10. Correlation methods in optical metrology with state-of-the-art x-ray mirrors

    Science.gov (United States)

    Yashchuk, Valeriy V.; Centers, Gary; Gevorkyan, Gevork S.; Lacey, Ian; Smith, Brian V.

    2018-01-01

    The development of fully coherent free electron lasers and diffraction limited storage ring x-ray sources has brought to focus the need for higher performing x-ray optics with unprecedented tolerances for surface slope and height errors and roughness. For example, the proposed beamlines for the future upgraded Advance Light Source, ALS-U, require optical elements characterized by a residual slope error of optics with a length of up to one meter. However, the current performance of x-ray optical fabrication and metrology generally falls short of these requirements. The major limitation comes from the lack of reliable and efficient surface metrology with required accuracy and with reasonably high measurement rate, suitable for integration into the modern deterministic surface figuring processes. The major problems of current surface metrology relate to the inherent instrumental temporal drifts, systematic errors, and/or an unacceptably high cost, as in the case of interferometry with computer-generated holograms as a reference. In this paper, we discuss the experimental methods and approaches based on correlation analysis to the acquisition and processing of metrology data developed at the ALS X-Ray Optical Laboratory (XROL). Using an example of surface topography measurements of a state-of-the-art x-ray mirror performed at the XROL, we demonstrate the efficiency of combining the developed experimental correlation methods to the advanced optimal scanning strategy (AOSS) technique. This allows a significant improvement in the accuracy and capacity of the measurements via suppression of the instrumental low frequency noise, temporal drift, and systematic error in a single measurement run. Practically speaking, implementation of the AOSS technique leads to an increase of the measurement accuracy, as well as the capacity of ex situ metrology by a factor of about four. The developed method is general and applicable to a broad spectrum of high accuracy measurements.

  11. Computational methods for high-energy source shielding

    International Nuclear Information System (INIS)

    Armstrong, T.W.; Cloth, P.; Filges, D.

    1983-01-01

    The computational methods for high-energy radiation transport related to shielding of the SNQ-spallation source are outlined. The basic approach is to couple radiation-transport computer codes which use Monte Carlo methods and discrete ordinates methods. A code system is suggested that incorporates state-of-the-art radiation-transport techniques. The stepwise verification of that system is briefly summarized. The complexity of the resulting code system suggests a more straightforward code specially tailored for thick shield calculations. A short guide line to future development of such a Monte Carlo code is given

  12. The Impact of Computer and Communications Technology on Recruiter Productivity and Quality of Life

    National Research Council Canada - National Science Library

    Blackstone, Tanja

    2003-01-01

    .... A test group of recruiters was given a set of tools, which included state of the art laptop computers, computer projection equipment, communications and database software, Internet and Intranet...

  13. State of the art in HGPT (Heuristically Based Generalized Perturbation) methodology

    International Nuclear Information System (INIS)

    Gandini, A.

    1993-01-01

    A distinctive feature of heuristically based generalized perturbation theory (HGPT) methodology consists in the systematic use of importance conservation concepts. As well known, this use leads to fundamental reciprocity relationships from which perturbation, or sensitivity, expressions can be derived. The state of the art of the HGPT methodology is here illustrated. The application to a number of specific nonlinear fields of interest is commented. (author)

  14. Multimodality imaging and state-of-art GPU technology in discriminating benign from malignant breast lesions on real time decision support system

    International Nuclear Information System (INIS)

    Kostopoulos, S; Glotsos, D; Kalatzis, I; Asvestas, P; Cavouras, D; Sidiropoulos, K; Dimitropoulos, N

    2014-01-01

    The aim of this study was to design a pattern recognition system for assisting the diagnosis of breast lesions, using image information from Ultrasound (US) and Digital Mammography (DM) imaging modalities. State-of-art computer technology was employed based on commercial Graphics Processing Unit (GPU) cards and parallel programming. An experienced radiologist outlined breast lesions on both US and DM images from 59 patients employing a custom designed computer software application. Textural features were extracted from each lesion and were used to design the pattern recognition system. Several classifiers were tested for highest performance in discriminating benign from malignant lesions. Classifiers were also combined into ensemble schemes for further improvement of the system's classification accuracy. Following the pattern recognition system optimization, the final system was designed employing the Probabilistic Neural Network classifier (PNN) on the GPU card (GeForce 580GTX) using CUDA programming framework and C++ programming language. The use of such state-of-art technology renders the system capable of redesigning itself on site once additional verified US and DM data are collected. Mixture of US and DM features optimized performance with over 90% accuracy in correctly classifying the lesions

  15. Promises and Pitfalls of Computer-Supported Mindfulness: Exploring a Situated Mobile Approach

    Directory of Open Access Journals (Sweden)

    Ralph Vacca

    2017-12-01

    Full Text Available Computer-supported mindfulness (CSM is a burgeoning area filled with varied approaches such as mobile apps and EEG headbands. However, many of the approaches focus on providing meditation guidance. The ubiquity of mobile devices may provide new opportunities to support mindfulness practices that are more situated in everyday life. In this paper, a new situated mindfulness approach is explored through a specific mobile app design. Through an experimental design, the approach is compared to traditional audio-based mindfulness meditation, and a mind wandering control, over a one-week period. The study demonstrates the viability for a situated mobile mindfulness approach to induce mindfulness states. However, phenomenological aspects of the situated mobile approach suggest both promises and pitfalls for computer-supported mindfulness using a situated approach.

  16. Antiphospholipid Syndrome during pregnancy: the state of the art

    Science.gov (United States)

    Di Prima, Fosca A. F.; Valenti, Oriana; Hyseni, Entela; Giorgio, Elsa; Faraci, Marianna; Renda, Eliana; De Domenico, Roberta; Monte, Santo

    2011-01-01

    Obstetric complications are the hallmark of antiphospholipid syndrome. Recurrent miscarriage, early delivery, oligohydramnios, prematurity, intrauterine growth restriction, fetal distress, fetal or neonatal thrombosis, pre-eclampsia/eclampsia, HELLP syndrome, arterial or venous thrombosis and placental insufficiency are the most severe APS-related complication for pregnant women. Antiphospholipid antibodies promote activation of endothelial cells, monocytes and platelets, causing an overproduction of tissue factor and thromboxane A2. Complement activation might have a central pathogenetic role. These factors, associated with the typical changes in the hemostatic system during normal pregnancy, result in a hypercoagulable state. This is responsible of thrombosis that is presumed to provoke many of the pregnancy complications associated with APS. Obstetric care is based on combined medical-obstetric high-risk management and treatment with the association between aspirin and heparin. This review aims to deter- mine the current state of the art of APS by investigating the knowledge achievements of recent years, to provide the most appropriate diagnostic and therapeutic management for pregnant women suffering from this syndrome. PMID:22439075

  17. Conservation physiology of marine fishes: state of the art and prospects for policy

    NARCIS (Netherlands)

    Mckenzie, David J.; Axelsson, Michael; Chabot, Denis; Claireaux, Guy; Cooke, Steven J.; Corner, Richard A.; Boeck, De Gudrun; Domenici, Paolo; Guerreiro, Pedro M.; Hamer, Bojan; Jørgensen, Christian; Killen, Shaun S.; Lefevre, Sjannie; Marras, Stefano; Michaelidis, Basile; Nilsson, Göran E.; Peck, Myron A.; Perez-Ruzafa, Angel; Rijnsdorp, Adriaan D.; Shiels, Holly A.; Steffensen, John F.; Svendsen, Jon C.; Svendsen, Morten B.S.; Teal, Lorna R.; Meer, Van Der Jaap; Wang, Tobias; Wilson, Jonathan M.; Wilson, Rod W.; Metcalfe, Julian D.

    2016-01-01

    The state of the art of research on the environmental physiology of marine fishes is reviewed from the perspective of how it can contribute to conservation of knowledge for conservation of marine fishes is the limited knowledge base; international collaboration is needed to study the environmental

  18. Conservation physiology of marine fishes: state of the art and prospects for policy

    DEFF Research Database (Denmark)

    McKenzie, David J.; Axelsson, Michael; Chabot, Denis

    2016-01-01

    The state of the art of research on the environmental physiology of marine fishes is reviewed from the perspective of how it can contribute to conservation of biodiversity and fishery resources. A major constraint to application of physiological knowledge for conservation of marine fishes is the ...

  19. The impact of the ART approach on the treatment pattern in a public oral health service in South Africa.

    NARCIS (Netherlands)

    Mickenautsch, S.

    2007-01-01

    The Atraumatic Restorative Treatment (ART) approach stands for restoring and preventing carious lesions in tooth surfaces without the use of the drill. It was introduced in South Africa in 1996 and adopted by all dental schools. However, no information was available on the introduction of ART into

  20. State-of-art report III/1984 (June 29 to November 27, 1984)

    International Nuclear Information System (INIS)

    1985-01-01

    The state-of-art report III/1984 gives a survey of the activities of the Nuclear Committee (KTA) and its panels and of KTA regulation projects in the period between the 35th and 36th KTA meeting. The state-of-art report is designed to give fast, synoptical, adequate information on the current state of KTA work. With regulation projects, data which are subject to miner variations only, for instance concerning the contents or organization of a regulation project, data on the flow of work, members of the panels, are included in the KTA manual. In case of alterations, the data in the KTA manual are updated by replacing the respective pages. (orig./HP) [de

  1. Advancement of the state system of accounting for mainframe to personal computer (PC) technology

    International Nuclear Information System (INIS)

    Proco, G.; Nardi, J.

    1999-01-01

    The advancement of the U.S. government's state system of accounting from a mainframe computer to a personal computer (PC) had been successfully completed. The accounting system, from 1965 until 1995 a mainframe application, was replaced in September 1995 by an accounting system employing local area network (LAN) capabilities and other state-of-the-art characteristics. The system is called the Nuclear Materials Management and Safeguards System (NMMSS), tracking nuclear material activities and providing accounting reports for a variety of government and private users. The uses of the system include not only the tracking of nuclear materials for international and domestic safeguards purposes but also serving to facilitate the government's resource management purposes as well. The system was converted to PC hardware and fourth generation software to improve upon the mainframe system. The change was motivated by the desire to have a system amenable to frequent modifications, to improve upon services to users and to reduce increasing operating costs. Based on two years of operating the new system, it is clear that these objectives were met. Future changes to the system are inevitable and the national system of accounting for nuclear materials has the technology base to meet the challenges with proven capability. (author)

  2. Passive Optical Access Networks: State of the Art and Future Evolution

    Directory of Open Access Journals (Sweden)

    Tommaso Muciaccia

    2014-10-01

    Full Text Available In the very last years, optical access networks are growing very rapidly, from both the network operators and the research interests points of view. Fiber To The Home (FTTH is already a reality in plenty of real contexts and there has been a further stimulus to the proposal of new solutions and the investigation of new possibilities, in order to optimize network performance and reduce capital and operational expenditure. A complete and systematic overview of passive optical access networks is presented in this paper, concerning both the hot research topics and the main operative issues about the design guidelines and the deployment of Passive Optical Networks (PON architectures, nowadays the most commonly implemented approach to realize optical fiber links in the access networks. A comparison of advantages and disadvantages of different multiplexing techniques is discussed, with specific reference to WDM-based networks, almost universally considered as the enabling technology for future proof bandwidth requirements. An exhaustive summary is also given about the-state-of-the-art of modulation and encoding techniques recently proposed by the scientific community, as well as the open challenges (such as colorless and coolerless ONUs for telecom companies and international standardization compliance.

  3. Summary of State-of-the-Art Power Conversion Systems for Energy Storage Applications

    Energy Technology Data Exchange (ETDEWEB)

    Atcitty, S.; Gray-Fenner, A.; Ranade, S.

    1998-09-01

    The power conversion system (PCS) is a vital part of many energy storage systems. It serves as the interface between the storage device, an energy source, and an AC load. This report summarizes the results of an extensive study of state-of-the-art power conversion systems used for energy storage applications. The purpose of the study was to investigate the potential for cost reduction and performance improvement in these power conversion systems and to provide recommendations for fiture research and development. This report provides an overview of PCS technology, a description of several state-of-the-art power conversion systems and how they are used in specific applications, a summary of four basic configurations for l:he power conversion systems used in energy storage applications, a discussion of PCS costs and potential cost reductions, a summary of the stancku-ds and codes relevant to the technology, and recommendations for future research and development.

  4. Case studies in intelligent computing achievements and trends

    CERN Document Server

    Issac, Biju

    2014-01-01

    Although the field of intelligent systems has grown rapidly in recent years, there has been a need for a book that supplies a timely and accessible understanding of this important technology. Filling this need, Case Studies in Intelligent Computing: Achievements and Trends provides an up-to-date introduction to intelligent systems.This edited book captures the state of the art in intelligent computing research through case studies that examine recent developments, developmental tools, programming, and approaches related to artificial intelligence (AI). The case studies illustrate successful ma

  5. Computational Approach for Studying Optical Properties of DNA Systems in Solution

    DEFF Research Database (Denmark)

    Nørby, Morten Steen; Svendsen, Casper Steinmann; Olsen, Jógvan Magnus Haugaard

    2016-01-01

    In this paper we present a study of the methodological aspects regarding calculations of optical properties for DNA systems in solution. Our computational approach will be built upon a fully polarizable QM/MM/Continuum model within a damped linear response theory framework. In this approach...... the environment is given a highly advanced description in terms of the electrostatic potential through the polarizable embedding model. Furthermore, bulk solvent effects are included in an efficient manner through a conductor-like screening model. With the aim of reducing the computational cost we develop a set...... of averaged partial charges and distributed isotropic dipole-dipole polarizabilities for DNA suitable for describing the classical region in ground-state and excited-state calculations. Calculations of the UV-spectrum of the 2-aminopurine optical probe embedded in a DNA double helical structure are presented...

  6. Fine pitch thermosonic wire bonding: analysis of state-of-the-art manufacturing capability

    Science.gov (United States)

    Cavasin, Daniel

    1995-09-01

    A comprehensive process characterization was performed at the Motorola plastic package assembly site in Selangor, Malaysia, to document the current fine pitch wire bond process capability, using state-of-the-art equipment, in an actual manufacturing environment. Two machines, representing the latest technology from two separate manufacturers, were operated one shift per day for five days, bonding a 132 lead Plastic Quad Flat Pack. Using a test device specifically designed for fine pitch wire bonding, the bonding programs were alternated between 107 micrometers and 92 micrometers pad pitch, running each pitch for a total of 1600 units per machine. Wire, capillary type, and related materials were standardized and commercially available. A video metrology measurement system, with a demonstrated six sigma repeatability band width of 0.51 micrometers , was utilized to measure the bonded units for bond dimensions and placement. Standard Quality Assurance (QA) metrics were also performed. Results indicate that state-of-the-art thermosonic wire bonding can achieve acceptable assembly yields at these fine pad pitches.

  7. Brain-computer interface research a state-of-the-art summary 3

    CERN Document Server

    Guger, Christoph; Allison, Brendan

    2014-01-01

    This book provides a cutting-edge overview of the latest developments in Brain-Computer-Interfaces (BCIs), reported by leading research groups. As the reader will discover, BCI research is moving ahead rapidly, with many new ideas, research initiatives, and improved technologies, e.g. BCIs that enable people to communicate just by thinking - without any movement at all. Several different groups are helping severely disabled users communicate using BCIs, and BCI technology is also being extended to facilitate recovery from stroke, epilepsy, and other conditions. Each year, hundreds of the top

  8. Computational Approaches to the Determination of the Molecular Geometry of Acrolein in its T_1(n,π*) State

    Science.gov (United States)

    McAnally, Michael O.; Hlavacek, Nikolaus C.; Drucker, Stephen

    2012-06-01

    The spectroscopically derived inertial constants for acrolein (propenal) in its T_1(n,π*) state were used to test predictions from a variety of computational methods. One focus was on multiconfigurational methods, such as CASSCF and CASPT2, that are applicable to excited states. We also examined excited-state methods that utilize single reference configurations, including EOM-EE-CCSD and TD-PBE0. Finally, we applied unrestricted ground-state techniques, such as UCCSD(T) and the more economical UPBE0 method, to the T_1(n,π*) excited state under the constraint of C_s symmetry. The unrestricted ground-state methods are applicable because at a planar geometry, the T_1(n,π*) state of acrolein is the lowest-energy state of its spin multiplicity. Each of the above methods was used with a triple zeta quality basis set to optimize the T_1(n,π*) geometry. This procedure resulted in the following sets of inertial constants: Inertial constants (cm-1) of acrolein in its T_1(n,π*) state Method A B C Method A B C CASPT2(6,5) 1.667 0.1491 0.1368 UCCSD(T)^b 1.668 0.1480 0.1360 CASSCF(6,5) 1.667 0.1491 0.1369 UPBE0 1.699 0.1487 0.1367 EOM-EE-CCSD 1.675 0.1507 0.1383 TD-PBE0 1.719 0.1493 0.1374 Experiment^a 1.662 0.1485 0.1363 The two multiconfigurational methods produce the same inertial constants, and those constants agree closely with experiment. However the sets of computed bond lengths differ significantly for the two methods. In the CASSCF calculation, the lengthening of the C=O and C=C bonds and the shortening of the C--C bond are more pronounced than in CASPT2. O. S. Bokareva et al., Int. J. Quant. Chem. {108}, 2719 (2008).

  9. Seismic response of buried pipelines: a state-of-the-art review

    International Nuclear Information System (INIS)

    Datta, T.K.

    1999-01-01

    A state-of-the-art review of the seismic response of buried pipelines is presented. The review includes modeling of soil-pipe system and seismic excitation, methods of response analysis of buried pipelines, seismic behavior of buried pipelines under different parametric variations, seismic stresses at the bends and intersections of network of pipelines. pipe damage in earthquakes and seismic risk analysis of buried pipelines. Based on the review, the future scope of work on the subject is outlined. (orig.)

  10. Radioactive waste management: State of the art in the world. Part 2

    International Nuclear Information System (INIS)

    Pahissa Campa, Jaime; Pahissa, Marta H. de

    2001-01-01

    In the former number of this publication, the management of low and intermediate level wastes (LILW) was described as well as an overview of the state of art in the world. This report summarizes the strategies for high level waste management including final disposal. What is being done on an international basis in this field in different countries will be described in the next number of this review. (author)

  11. An excited-state approach within full configuration interaction quantum Monte Carlo

    International Nuclear Information System (INIS)

    Blunt, N. S.; Smart, Simon D.; Booth, George H.; Alavi, Ali

    2015-01-01

    We present a new approach to calculate excited states with the full configuration interaction quantum Monte Carlo (FCIQMC) method. The approach uses a Gram-Schmidt procedure, instantaneously applied to the stochastically evolving distributions of walkers, to orthogonalize higher energy states against lower energy ones. It can thus be used to study several of the lowest-energy states of a system within the same symmetry. This additional step is particularly simple and computationally inexpensive, requiring only a small change to the underlying FCIQMC algorithm. No trial wave functions or partitioning of the space is needed. The approach should allow excited states to be studied for systems similar to those accessible to the ground-state method due to a comparable computational cost. As a first application, we consider the carbon dimer in basis sets up to quadruple-zeta quality and compare to existing results where available

  12. The science and art of simulation I exploring, understanding, knowing

    CERN Document Server

    Kaminski, Andreas; Gehring, Petra

    2017-01-01

    The new book series “The Science and Art of Simulation” (SAS) addresses computer simulations as a scientific activity and engineering artistry (in the sense of a technē). The first volume is devoted to three topics: 1. The Art of Exploring Computer Simulations Philosophy began devoting attention to computer simulations at a relatively early stage. Since then, the unquestioned point of view has been that computer simulation is a new scientific method; the philosophy of simulation is therefore part of the philosophy of science. The first section of this volume discusses this implicit, unchallenged assumption by addressing, from different perspectives, the question of how to explore (and how not to explore) research on computer simulations. Scientists discuss what is still lacking or considered problematic, while philosophers draft new directions for research, and both examine the art of exploring computer simulations. 2. The Art of Understanding Computer Simulations The results of computer simulations are ...

  13. Blade root design a state of the art survey

    Energy Technology Data Exchange (ETDEWEB)

    Sandberg, O

    1988-06-01

    This report was conceived in the wake of recent blade root failures in several horizontal axis turbines. Ten blade root designs are presented. They are considered to represent the state of the art. The information was obtained partly from literature partly from a few important projects with little or no documentation. Suggestions are made how to proceed in the development of the bonded bolt type of root retention. Presently the conclusion is that this type of arrangement seems the most promising. Developments in this field should be closely monitored, however. For this type of very high cycle fatigue designs there is a need for two redundant design principles. (author).

  14. Improved Models to Integrated Berth Allocation-Quay Crane Assignment Problem: A Computational Comparison and Novel Solution Approaches

    DEFF Research Database (Denmark)

    Iris, Cagatay; Pacino, Dario; Røpke, Stefan

    of the vessels primarily depends on the number of containers to be handled and the number of cranes deployed, it would be beneficial to consider the integration of those two problems. This work extends the state-of-the-art by strengthening the current best mathematical formulation. Computational experiments...

  15. Corpora and Language Assessment: The State of the Art

    Science.gov (United States)

    Park, Kwanghyun

    2014-01-01

    This article outlines the current state of and recent developments in the use of corpora for language assessment and considers future directions with a special focus on computational methodology. Because corpora began to make inroads into language assessment in the 1990s, test developers have increasingly used them as a reference resource to…

  16. The state-of-the-art in short-term prediction of wind power. A literature overview

    Energy Technology Data Exchange (ETDEWEB)

    Giebel, G.; Brownsword, R.; Kariniotakis, G.

    2003-08-01

    Based on an appropriate questionnaire (WP1.1) and some other works already in progress, this report details the state-of-the-art in short term prediction of wind power, mostly summarising nearly all existing literature on the topic. (au)

  17. The state-of-the-art in the rehabilitation of a PIONEER Crane

    Directory of Open Access Journals (Sweden)

    Cosmin Bledea

    2005-10-01

    Full Text Available The paper is focused on the analysis about the state of stress in the girder of a PIONEER crane with a prescribed vertical loading of 0,75 tones belonging to the thermal power-station Timisoara. The analysis has been performed with a FEA software (COSMOS/M which is able to conduct to important results regarding the map of stress, especially in areas where high stress concentration are present. There have been automatically combined a wide range of finite elements: shell, brick, beam,truss-cable simulating the different zones of the girder. The combination of the most advanced standard components as well the implementation of the modular product concepts and the state-of-the-art regarding the design of cranes must be in a perfect agreement with the state of stress in the metallic structure. In the end, a comparison between the FEA results and the classical calculus with the strength of materials theory has been performed.

  18. Towards data oriented analysis of the art market: survey and outlook

    Directory of Open Access Journals (Sweden)

    Dominik Filipiak

    2016-07-01

    Full Text Available Due to the constantly growing interest in alternati ve investments, the art market has become the subject of numerous studies. By publishing sales data, many services and auction houses provide a foundati on for further research on the latest trends. Determining the definiti on of the arti sti c value or formalisation of appraisal may be considered quite complex. Statistical analysis, econometric methods or data mining techniques could pave the way towards bett er understanding of the mechanisms occurring on the art market. The goal of this paper is to identify, describe and compare solutions (and related challenges that help to analyse, make decisions and defi ne state of the art in the context of the intersecti on of econometrics on art markets and computer science. This work is also a starting point for further research.

  19. Big-hole drilling - the state of the art

    International Nuclear Information System (INIS)

    Lackey, M.D.

    1983-01-01

    The art of big-hole drilling has been in a continual state of evolution at the Nevada Test Site since the start of underground testing in 1961. Emplacement holes for nuclear devices are still being drilled by the rotary-drilling process, but almost all the hardware and systems have undergone many changes during the intervening years. The current design of bits, cutters, and other big-hole-drilling hardware results from contributions of manufacturers and Test Site personnel. The dual-string, air-lift, reverse-circulation system was developed at the Test Site. Necessity was really the Mother of this invention, but this circulation system is worthy of consideration under almost any condition. Drill rigs for big-hole drilling are usually adaptations of large oil-well drill rigs with minor modifications required to handle the big bits and drilling assemblies. Steel remains the favorite shaft lining material, but a lot of thought is being given to concrete linings, especially precast concrete

  20. Glacial isostatic adjustment and sea-level change. State of the art report

    International Nuclear Information System (INIS)

    Whitehouse, Pippa

    2009-04-01

    This report outlines the physics of glacial isostatic adjustment (GIA), how this affects sea-level, and the methods which are employed by researchers to study and understand these processes. The report describes the scientific background into the processes and methods presented in SKB TR-06-23 (INIS ref 38-021351). The purpose of this report is to provide a reference document for people who require a more in-depth understanding of GIA processes than is presented in the earlier report. The key components of the GIA system are described, and this is followed by a concise description of the processes that take place within and between these components during a glacial cycle. The report contains 4 chapters: Chapter 1, 'Introduction'; Chapter 2, 'GIA systems', describes the three main systems which are involved in the GIA process; the solid Earth, the hydrosphere and the cryosphere. The various parameters which govern the behaviour of these systems, and must be known in order to model GIA processes, are defined. Chapter 3, 'Governing equations', lays out the physics of GIA and derives the equations which must be solved to determine the redistribution of water over the surface of the Earth, and the solid Earth response. Secondary processes, such as ocean syphoning, are also described. The driving forces behind glacial cycles are briefly discussed. The methods used to solve these equations are laid out in chapter 4, 'State-of-the-art GIA models'. In this chapter, the different approaches used by different groups of researchers are discussed, as are the relative accuracy of the methods. Recent improvements to the theory are described, as are current shortcomings of the models. The various data sets used to calibrate and verify the accuracy of the modelling are also briefly described in this chapter. In the past few years advances in computational speed have enabled researchers to develop models which attempt to account for the effects 3-D Earth structure upon GIA processes

  1. A state space approach for the eigenvalue problem of marine risers

    KAUST Repository

    Alfosail, Feras

    2017-10-05

    A numerical state-space approach is proposed to examine the natural frequencies and critical buckling limits of marine risers. A large axial tension in the riser model causes numerical limitations. These limitations are overcome by using the modified Gram–Schmidt orthonormalization process as an intermediate step during the numerical integration process with the fourth-order Runge–Kutta scheme. The obtained results are validated against those obtained with other numerical methods, such as the finite-element, Galerkin, and power-series methods, and are found to be in good agreement. The state-space approach is shown to be computationally more efficient than the other methods. Also, we investigate the effect of a high applied tension, a high apparent weight, and higher-order modes on the accuracy of the numerical scheme. We demonstrate that, by applying the orthonormalization process, the stability and convergence of the approach are significantly improved.

  2. Looking at Op Art from a computational viewpoint.

    Science.gov (United States)

    Zanker, Johannes M

    2004-01-01

    Arts history tells an exciting story about repeated attempts to represent features that are crucial for the understanding of our environment and which, at the same time, go beyond the inherently two-dimensional nature of a flat painting surface: depth and motion. In the twentieth century, Op artists such as Bridget Riley began to experiment with simple black and white patterns that do not represent motion in an artistic way but actually create vivid dynamic illusions in static pictures. The cause of motion illusions in such paintings is still a matter of debate. The role of involuntary eye movements in this phenomenon is studied here with a computational approach. The possible consequences of shifting the retinal image of synthetic wave gratings, dubbed as 'riloids', were analysed by a two-dimensional array of motion detectors (2DMD model), which generates response maps representing the spatial distribution of motion signals generated by such a stimulus. For a two-frame sequence reflecting a saccadic displacement, these motion signal maps contain extended patches in which local directions change only little. These directions, however, do not usually precisely correspond to the direction of pattern displacement that can be expected from the geometry of the curved gratings as an instance of the so-called 'aperture problem'. The patchy structure of the simulated motion detector response to the displacement of riloids resembles the motion illusion, which is not perceived as a coherent shift of the whole pattern but as a wobbling and jazzing of ill-defined regions. Although other explanations are not excluded, this might support the view that the puzzle of Op Art motion illusions could potentially have an almost trivial solution in terms of small involuntary eye movement leading to image shifts that are picked up by well-known motion detectors in the early visual system. This view can have further consequences for our understanding of how the human visual system usually

  3. A state-of-the-art report on software operation structure of the digital control computer system

    International Nuclear Information System (INIS)

    Kim, Bong Kee; Lee, Kyung Hoh; Joo, Jae Yoon; Jang, Yung Woo; Shin, Hyun Kook

    1994-06-01

    CANDU Nuclear Power Plants including Wolsong 1 and 2/3/4 are controlled by a real-time plant control computer system. This report was written to provide an overview on the station control computer software which belongs to one of the most advanced real-time computing application area, along with the Fuel Handling Machine design concepts. The combination of well designed control computer and Fuel Handling Machine allow changing fuel bundles while the plant is in operation. Design methodologies and software structure are discussed along with the interface between the two systems. 29 figs., 2 tabs., 20 refs. (Author)

  4. A state-of-the-art report on software operation structure of the digital control computer system

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Bong Kee; Lee, Kyung Hoh; Joo, Jae Yoon; Jang, Yung Woo; Shin, Hyun Kook [Korea Atomic Energy Research Institute, Taejon (Korea, Republic of)

    1994-06-01

    CANDU Nuclear Power Plants including Wolsong 1 and 2/3/4 are controlled by a real-time plant control computer system. This report was written to provide an overview on the station control computer software which belongs to one of the most advanced real-time computing application area, along with the Fuel Handling Machine design concepts. The combination of well designed control computer and Fuel Handling Machine allow changing fuel bundles while the plant is in operation. Design methodologies and software structure are discussed along with the interface between the two systems. 29 figs., 2 tabs., 20 refs. (Author).

  5. Parameter retrieval of chiral metamaterials based on the state-space approach.

    Science.gov (United States)

    Zarifi, Davoud; Soleimani, Mohammad; Abdolali, Ali

    2013-08-01

    This paper deals with the introduction of an approach for the electromagnetic characterization of homogeneous chiral layers. The proposed method is based on the state-space approach and properties of a 4×4 state transition matrix. Based on this, first, the forward problem analysis through the state-space method is reviewed and properties of the state transition matrix of a chiral layer are presented and proved as two theorems. The formulation of a proposed electromagnetic characterization method is then presented. In this method, scattering data for a linearly polarized plane wave incident normally on a homogeneous chiral slab are combined with properties of a state transition matrix and provide a powerful characterization method. The main difference with respect to other well-established retrieval procedures based on the use of the scattering parameters relies on the direct computation of the transfer matrix of the slab as opposed to the conventional calculation of the propagation constant and impedance of the modes supported by the medium. The proposed approach allows avoiding nonlinearity of the problem but requires getting enough equations to fulfill the task which was provided by considering some properties of the state transition matrix. To demonstrate the applicability and validity of the method, the constitutive parameters of two well-known dispersive chiral metamaterial structures at microwave frequencies are retrieved. The results show that the proposed method is robust and reliable.

  6. An overview of computer-based natural language processing

    Science.gov (United States)

    Gevarter, W. B.

    1983-01-01

    Computer based Natural Language Processing (NLP) is the key to enabling humans and their computer based creations to interact with machines in natural language (like English, Japanese, German, etc., in contrast to formal computer languages). The doors that such an achievement can open have made this a major research area in Artificial Intelligence and Computational Linguistics. Commercial natural language interfaces to computers have recently entered the market and future looks bright for other applications as well. This report reviews the basic approaches to such systems, the techniques utilized, applications, the state of the art of the technology, issues and research requirements, the major participants and finally, future trends and expectations. It is anticipated that this report will prove useful to engineering and research managers, potential users, and others who will be affected by this field as it unfolds.

  7. State-of-the-art mass spectrometer system for determination of uranium and plutonium isotopic distributions in process samples

    International Nuclear Information System (INIS)

    Polson, C.A.

    1983-01-01

    A Finnigan MAT 261 automated thermal ionization mass spectrometer system was purchased by the Savannah River Plant. The MAT 261 is a highly precise, fully automated instrument. Many features make this instrument the state-of-the-art technology in precision isotopic composition measurements. A unique feature of the MAT 261 is the ion detection system which permits measurement of the three uranium or plutonium masses simultaneously. All Faraday cup measuring channels are of the same design and each is equipped with a dedicated amplifier. Each amplifier is connected to a linear voltage/frequency measuring system for ion current integration. These outputs are fed into a Hewlett-Packard 9845T desk-top computer. The computer, and the Finnigan developed software package, control filament heating cycles, sample preconditioning, ion beam focusing, carrousel rotation, mass selection, and data collection and reduction. Precision, accuracy, and linearity were determined under normal laboratory conditions using a NBS uranium suite of standards. These results along with other development in setting up the instrument are presented

  8. State-of-the-art report of spent fuel management technology

    International Nuclear Information System (INIS)

    Ro, S. G.; Park, S. W.; Shin, Y. J. and others

    1998-06-01

    Essential technologies for a long-term management of domestic nuclear fuel have been described in this report. The technologies of interest are advanced processes for spent fuel management, spent fuel examination technology, evaluation of radiation effect on equipment, chemical characterization of spent fuel, and hot cell-related technology state of the art for the above-mentioned technologies has been reviewed and analyzed in detail. As a result, a future R and D direction that seems to be appropriate for us is drawn up in due consideration of in- and out-circumstances encountered with. (author). 304 refs., 28 tabs., 43 figs

  9. Probabilistic Damage Characterization Using the Computationally-Efficient Bayesian Approach

    Science.gov (United States)

    Warner, James E.; Hochhalter, Jacob D.

    2016-01-01

    This work presents a computationally-ecient approach for damage determination that quanti es uncertainty in the provided diagnosis. Given strain sensor data that are polluted with measurement errors, Bayesian inference is used to estimate the location, size, and orientation of damage. This approach uses Bayes' Theorem to combine any prior knowledge an analyst may have about the nature of the damage with information provided implicitly by the strain sensor data to form a posterior probability distribution over possible damage states. The unknown damage parameters are then estimated based on samples drawn numerically from this distribution using a Markov Chain Monte Carlo (MCMC) sampling algorithm. Several modi cations are made to the traditional Bayesian inference approach to provide signi cant computational speedup. First, an ecient surrogate model is constructed using sparse grid interpolation to replace a costly nite element model that must otherwise be evaluated for each sample drawn with MCMC. Next, the standard Bayesian posterior distribution is modi ed using a weighted likelihood formulation, which is shown to improve the convergence of the sampling process. Finally, a robust MCMC algorithm, Delayed Rejection Adaptive Metropolis (DRAM), is adopted to sample the probability distribution more eciently. Numerical examples demonstrate that the proposed framework e ectively provides damage estimates with uncertainty quanti cation and can yield orders of magnitude speedup over standard Bayesian approaches.

  10. Software process improvement: a systematic mapping study on the state of the art

    Directory of Open Access Journals (Sweden)

    Marco Kuhrmann

    2016-05-01

    Full Text Available Software process improvement (SPI has been around for decades: frameworks are proposed, success factors are studied, and experiences have been reported. However, the sheer mass of concepts, approaches, and standards published over the years overwhelms practitioners as well as researchers. What is out there? Are there new trends and emerging approaches? What are open issues? Still, we struggle to answer these questions about the current state of SPI and related research. In this article, we present results from an updated systematic mapping study to shed light on the field of SPI, to develop a big picture of the state of the art, and to draw conclusions for future research directions. An analysis of 769 publications draws a big picture of SPI-related research of the past quarter-century. Our study shows a high number of solution proposals, experience reports, and secondary studies, but only few theories and models on SPI in general. In particular, standard SPI models like CMMI and ISO/IEC 15,504 are analyzed, enhanced, and evaluated for applicability in practice, but these standards are also critically discussed, e.g., from the perspective of SPI in small-to-medium-sized companies, which leads to new specialized frameworks. New and specialized frameworks account for the majority of the contributions found (approx. 38%. Furthermore, we find a growing interest in success factors (approx. 16% to aid companies in conducting SPI and in adapting agile principles and practices for SPI (approx. 10%. Beyond these specific topics, the study results also show an increasing interest into secondary studies with the purpose of aggregating and structuring SPI-related knowledge. Finally, the present study helps directing future research by identifying under-researched topics awaiting further investigation.

  11. Overview of ACTYS project on development of indigenous state-of-the-art code suites for nuclear activation analysis

    International Nuclear Information System (INIS)

    Subhash, P.V.; Tadepalli, Sai Chaitanya; Deshpande, Shishir P.; Kanth, Priti; Srinivasan, R.

    2017-01-01

    Rigorous activation calculations are warranted for safer and efficient design of future fusion machines. Suitable activation codes, which yield accurate results with faster performance yet include all fusion relevant reactions are a prerequisite. To meet these, an indigenous project called ACTYS-Project is initiated and as a result, four state-of-art codes are developed so far. The goal of this project is to develop indigenous state-of-the-art code suites for nuclear activation analysis

  12. The benefit of combining a deep neural network architecture with ideal ratio mask estimation in computational speech segregation to improve speech intelligibility

    DEFF Research Database (Denmark)

    Bentsen, Thomas; May, Tobias; Kressner, Abigail Anne

    2018-01-01

    Computational speech segregation attempts to automatically separate speech from noise. This is challenging in conditions with interfering talkers and low signal-to-noise ratios. Recent approaches have adopted deep neural networks and successfully demonstrated speech intelligibility improvements....... A selection of components may be responsible for the success with these state-of-the-art approaches: the system architecture, a time frame concatenation technique and the learning objective. The aim of this study was to explore the roles and the relative contributions of these components by measuring speech......, to a state-of-the-art deep neural network-based architecture. Another improvement of 13.9 percentage points was obtained by changing the learning objective from the ideal binary mask, in which individual time-frequency units are labeled as either speech- or noise-dominated, to the ideal ratio mask, where...

  13. Numerical and symbolic scientific computing

    CERN Document Server

    Langer, Ulrich

    2011-01-01

    The book presents the state of the art and results and also includes articles pointing to future developments. Most of the articles center around the theme of linear partial differential equations. Major aspects are fast solvers in elastoplasticity, symbolic analysis for boundary problems, symbolic treatment of operators, computer algebra, and finite element methods, a symbolic approach to finite difference schemes, cylindrical algebraic decomposition and local Fourier analysis, and white noise analysis for stochastic partial differential equations. Further numerical-symbolic topics range from

  14. The State of the Art in Cold Forging Lubrication

    DEFF Research Database (Denmark)

    Bay, Niels

    1994-01-01

    The manufature of components in steel, aluminium and copper alloys by cold forging production has increased ever since the 1950's. Typical processes are forward rod extrusion and backward can extrusion, upsetting, ironing, tube extrusion and radial extrusion. The tribological conditions in cold...... forging are extremely severe due to large surface expansion and normal pressure in the tool/workpiece interface combined with elevated tool temperatures. Except for the more simple cold forging operations successful production therefore requires advanced lubrication systems. The present paper gives...... a detailed description of the state of art for lubricant systems for cold forging of C-steels and low alloy steels as well as aluminium alloys including all the basic operations such as cleaning of the slugs, application of eventual conversion coating and lubrication. As regards cold forging of steel...

  15. Solar water detoxification: state of the art of the research in Spain

    International Nuclear Information System (INIS)

    Perez Martinez, M.; Cuesta Santianes, J.; Cabrera Jimenez, J. A.; Garcia Garcia, D.; Trevino Sanchez, A. C.; Berges Garcia, A.

    2010-01-01

    The CIEMAT's Foresight and Technology Watch Unit, whose technology watch management system is certified by Aenor as per standards UNE 16006:2006, has developed this study in order to review the state of the art of national research on solar water detoxification. to reach this goal, data bases of scientific publications, research projects and patents have been used. The technology watch information management solution VICUBO, developed by E-intelligent, was used as support tool for the afore-mentioned standard. (Author) 3 refs.

  16. A state-of-the-art passive gamma-ray assay system

    International Nuclear Information System (INIS)

    Sampson, T.E.; Parker, J.L.; Cowder, L.R.; Kern, E.A.; Garcia, D.L.; Ensslin, N.

    1987-01-01

    We report details of the development of a high-accuracy, high-precision system for the non-destructive assay of 235 U in solution. The system can measure samples with concentrations ranging from 0.0001 to 500 g 235 U/l using 200-ml samples at low concentrations, 30-ml samples at high concentrations, and 1000-s measurement times. The accuracy and precision goals of 0.1% were essentially attained for concentrations above 100 g/l. This at-line system, designed for a production plant environment, represents a significant improvement in the state of the art

  17. On the state of the art: risk communication to decision-makers

    International Nuclear Information System (INIS)

    Bier, V.M.

    2001-01-01

    This paper reviews the state of the art on risk communication to decision-makers, with an emphasis on issues involved in communicating technical results. In particular, the paper discusses the treatment of uncertainty, variability, and dependence. It also reviews suggestions from the literature regarding the appropriate format of risk communication messages to decision-makers. Due to the lack of detailed empirical investigations and definitive results about this topic, the paper is not intended to be a comprehensive review, but rather as an exploration of key issues in this area

  18. Computer-Assisted Diagnosis of the Sleep Apnea-Hypopnea Syndrome: A Review

    Science.gov (United States)

    Alvarez-Estevez, Diego; Moret-Bonillo, Vicente

    2015-01-01

    Automatic diagnosis of the Sleep Apnea-Hypopnea Syndrome (SAHS) has become an important area of research due to the growing interest in the field of sleep medicine and the costs associated with its manual diagnosis. The increment and heterogeneity of the different techniques, however, make it somewhat difficult to adequately follow the recent developments. A literature review within the area of computer-assisted diagnosis of SAHS has been performed comprising the last 15 years of research in the field. Screening approaches, methods for the detection and classification of respiratory events, comprehensive diagnostic systems, and an outline of current commercial approaches are reviewed. An overview of the different methods is presented together with validation analysis and critical discussion of the current state of the art. PMID:26266052

  19. Microwave ablation of renal tumors: state of the art and development trends.

    Science.gov (United States)

    Floridi, Chiara; De Bernardi, Irene; Fontana, Federico; Muollo, Alessandra; Ierardi, Anna Maria; Agostini, Andrea; Fonio, Paolo; Squillaci, Ettore; Brunese, Luca; Fugazzola, Carlo; Carrafiello, Gianpaolo

    2014-07-01

    In the last decades an increased incidence of new renal tumor cases has been for clinically localized, small tumors elderly patients, with medical comorbidities whom the risk of surgical complications may pose a greater risk of death than that due to the tumor itself. In these patients, unsuitable for surgical approach, thermal ablation represents a valid alternative to traditional surgery. Thermal ablation is a less invasive, less morbid treatment option thanks to reduced blood loss, lower incidence of complications during the procedure and a less long convalescence. At present, the most widely used thermal ablative techniques are cryoablation, radiofrequency ablation and microwave ablation (MWA). MWA offers many benefits of other ablation techniques and offers several other advantages: higher intratumoral temperatures, larger tumor ablation volumes, faster ablation times, the ability to use multiple applicators simultaneously, optimal heating of cystic masses and tumors close to the vessels and less procedural pain. This review aims to provide the reader with an overview about the state of the art of microwave ablation for renal tumors and to cast a glance on the new development trends of this technique.

  20. Monitoring self-adaptive applications within edge computing frameworks: A state-of-the-art review

    NARCIS (Netherlands)

    Taherizadeh, S.; Jones, A.C.; Taylor, I.; Zhao, Z.; Stankovski, V.

    Recently, a promising trend has evolved from previous centralized computation to decentralized edge computing in the proximity of end-users to provide cloud applications. To ensure the Quality of Service (QoS) of such applications and Quality of Experience (QoE) for the end-users, it is necessary to

  1. Global and Mexican analytical review of the state of the art on Ecosystem and Environmental services: A geographical approach

    Directory of Open Access Journals (Sweden)

    Maria Perevochtchikova

    2013-12-01

    Full Text Available The term Ecosystem Services (ES was introduced in the Rio Declaration in 1992, within a strong international movement for sustainable natural resource management. Back then, the innovative principle concerned the environmental functions that maintain life support systems. To illustrate this further, pollination, oxygen production, temperature regulation, water storage, filtering and distribution, among others, were listed and previously taken for granted until human action contested them. The first compensation schemes for Environmental Services were proposed in 1997 as one of the tools of the new environmental policy directed towards the principles of sustainable development. Since then, the topic of ES has received remarkable global response, which is reflected by the implementation of payment programs and by the development of research in many countries worldwide. This paper analyses the state of the art of the research carried out so far on ES and Environmental Services from the global and the Mexican perspectives. It is based upon the review of 1,781 scientific papers published in international peer reviewed journals between 1992 and 2012. Furthermore, the present study provides a sound geographical overview of the main ES topics studied and of the relative emission of papers per region, country or state. Results are finally presented and discussed in the light of their deficits and of the challenges ahead.

  2. Shader programming for computational arts and design: A comparison between creative coding frameworks

    OpenAIRE

    Gomez, Andres Felipe; Colubri, Andres; Charalambos, Jean Pierre

    2016-01-01

    We describe an Application Program Interface (API) that facilitates the use of GLSL shaders in computational design, interactive arts, and data visualization. This API was first introduced in the version 2.0 of Processing, a programming language and environment widely used for teaching and production in the context of media arts and design, and has been recently completed in the 3.0 release. It aims to incorporate low-level shading programming into code-based design, by int...

  3. The state-of-the-art in short-term prediction of wind power. A literature overview

    Energy Technology Data Exchange (ETDEWEB)

    Giebel, G.; Draxl, C. (Risoe DTU, Roskilde (Denmark)); Brownsword, R. (Rutherford Appleton Laboratory (RAL), Oxford (United Kingdom)); Kariniotakis, G. (ARMINES, Paris (France)); Denhard, M. (ECMWF, Reading (United Kingdom))

    2011-01-15

    This Deliverable of ANEMOS.plus (Advanced Tools for the Management of Electricity Grids with Large-Scale Wind Generation) and SafeWind projects presents the state of the art in wind power forecasting. More than 380 references of journal and conference papers have been reviewed. (LN)

  4. Experimental magic state distillation for fault-tolerant quantum computing.

    Science.gov (United States)

    Souza, Alexandre M; Zhang, Jingfu; Ryan, Colm A; Laflamme, Raymond

    2011-01-25

    Any physical quantum device for quantum information processing (QIP) is subject to errors in implementation. In order to be reliable and efficient, quantum computers will need error-correcting or error-avoiding methods. Fault-tolerance achieved through quantum error correction will be an integral part of quantum computers. Of the many methods that have been discovered to implement it, a highly successful approach has been to use transversal gates and specific initial states. A critical element for its implementation is the availability of high-fidelity initial states, such as |0〉 and the 'magic state'. Here, we report an experiment, performed in a nuclear magnetic resonance (NMR) quantum processor, showing sufficient quantum control to improve the fidelity of imperfect initial magic states by distilling five of them into one with higher fidelity.

  5. Artificial immune system applications in computer security

    CERN Document Server

    Tan, Ying

    2016-01-01

    This book provides state-of-the-art information on the use, design, and development of the Artificial Immune System (AIS) and AIS-based solutions to computer security issues. Artificial Immune System: Applications in Computer Security focuses on the technologies and applications of AIS in malware detection proposed in recent years by the Computational Intelligence Laboratory of Peking University (CIL@PKU). It offers a theoretical perspective as well as practical solutions for readers interested in AIS, machine learning, pattern recognition and computer security. The book begins by introducing the basic concepts, typical algorithms, important features, and some applications of AIS. The second chapter introduces malware and its detection methods, especially for immune-based malware detection approaches. Successive chapters present a variety of advanced detection approaches for malware, including Virus Detection System, K-Nearest Neighbour (KNN), RBF networ s, and Support Vector Machines (SVM), Danger theory, ...

  6. Earthquake Forecasting Methodology Catalogue - A collection and comparison of the state-of-the-art in earthquake forecasting and prediction methodologies

    Science.gov (United States)

    Schaefer, Andreas; Daniell, James; Wenzel, Friedemann

    2015-04-01

    Earthquake forecasting and prediction has been one of the key struggles of modern geosciences for the last few decades. A large number of approaches for various time periods have been developed for different locations around the world. A categorization and review of more than 20 of new and old methods was undertaken to develop a state-of-the-art catalogue in forecasting algorithms and methodologies. The different methods have been categorised into time-independent, time-dependent and hybrid methods, from which the last group represents methods where additional data than just historical earthquake statistics have been used. It is necessary to categorize in such a way between pure statistical approaches where historical earthquake data represents the only direct data source and also between algorithms which incorporate further information e.g. spatial data of fault distributions or which incorporate physical models like static triggering to indicate future earthquakes. Furthermore, the location of application has been taken into account to identify methods which can be applied e.g. in active tectonic regions like California or in less active continental regions. In general, most of the methods cover well-known high-seismicity regions like Italy, Japan or California. Many more elements have been reviewed, including the application of established theories and methods e.g. for the determination of the completeness magnitude or whether the modified Omori law was used or not. Target temporal scales are identified as well as the publication history. All these different aspects have been reviewed and catalogued to provide an easy-to-use tool for the development of earthquake forecasting algorithms and to get an overview in the state-of-the-art.

  7. CEN standards for solar thermal systems - State of the art and expectted impact

    NARCIS (Netherlands)

    Ree, B.G.C. van der; Pauschinger, Th.

    1996-01-01

    Since 1994, the European Committee for Standardization (CEN) Technical Committee TC 312 has been active in producing European Standards for thermal solar energy systems and components. In this paper, an overview of the present State of the Art of the draft standards is presented. These standards

  8. Conference Report: The Hunt for the Nibelungen Treasure. BVM Conference: "Qualitative Market Research—State of the Art and Prospects"

    OpenAIRE

    Thomas Kühn

    2005-01-01

    On March 9th, 2005, a conference entitled "Qualitative Market Research—State of the Art and Prospects" was held in Frankfurt/M., organized by the Association of German Social and Market Researchers (BVM e.V.). Because of the great interest generated by the conference it was repeated on April 20th, 2005. The aim of the conference was to bring together market research professionals from the supply and demand sector to discuss the state of the art of qualitative market research in Germany. Withi...

  9. The state-of-the-art port of entry workshop

    Energy Technology Data Exchange (ETDEWEB)

    Godfrey, B.

    1995-05-01

    The increased demand for freight movements through international ports of entry and the signing of the North American Free Trade Agreement (NAFTA) have increased freight traffic at border ports of entry. The State-of-the-Art Port of Entry Workshop initiated a dialogue among technologists and stakeholders to explore the potential uses of technology at border crossings and to set development priorities. International ports of entry are both information and labor intensive, and there are many promising technologies that could be used to provide timely information and optimize inspection resources. Participants universally held that integration of technologies and operations is critical to improving port services. A series of Next Steps was developed to address stakeholder issues and national priorities, such as the National Transportation Policy and National Drug Policy. This report documents the views of the various stakeholders and technologists present at the workshop and outlines future directions of study.

  10. State of the art report on aging reliability analysis

    International Nuclear Information System (INIS)

    Choi, Sun Yeong; Yang, Joon Eon; Han, Sang Hoon; Ha, Jae Joo

    2002-03-01

    The goal of this report is to describe the state of the art on aging analysis methods to calculate the effects of component aging quantitatively. In this report, we described some aging analysis methods which calculate the increase of Core Damage Frequency (CDF) due to aging by including the influence of aging into PSA. We also described several research topics required for aging analysis for components of domestic NPPs. We have described a statistical model and reliability physics model which calculate the effect of aging quantitatively by using PSA method. It is expected that the practical use of the reliability-physics model will be increased though the process with the reliability-physics model is more complicated than statistical model

  11. Six-qubit two-photon hyperentangled cluster states: Characterization and application to quantum computation

    International Nuclear Information System (INIS)

    Vallone, Giuseppe; Donati, Gaia; Ceccarelli, Raino; Mataloni, Paolo

    2010-01-01

    Six-qubit cluster states built on the simultaneous entanglement of two photons in three independent degrees of freedom, that is, polarization and a double longitudinal momentum, have been recently demonstrated. We present here the peculiar entanglement properties of the linear cluster state |L-tildeC 6 > related to the three degrees of freedom. This state has been adopted to realize various kinds of controlled not (cnot) gates, obtaining high values of the fidelity of the expected output states for all considered cases. Our results demonstrate that these states may represent a promising approach toward scalable quantum computation in a medium-term time scale. The future perspectives of a hybrid approach to one-way quantum computing based on multiple degrees of freedom and multiphoton cluster states are also discussed in the conclusion of this article.

  12. Desiccant cooling: State-of-the-art assessment

    Energy Technology Data Exchange (ETDEWEB)

    Pesaran, A.A.; Penney, T.R.; Czanderna, A.W.

    1992-10-01

    The objectives of this document are to present an overview of the work accomplished to date on desiccant cooling to provide assessment of the state of the art of desiccant cooling technology in the field of desiccant material dehumidifier components, desiccant systems, and models. The report also discusses the factors that affect the widespread acceptance of desiccant cooling technology. This report is organized as follows. First, a basic description and historical overview of desiccant cooling technology is provided. Then, the recent research and development (R D) program history (focusing on DOE's funded efforts) is discussed. The status of the technology elements (materials, components, systems) is discussed in detail and a preliminary study on the energy impact of desiccant technology is presented. R D needs for advancing the technology in the market are identified. The National Renewable Energy Laboratory's unique desiccant test facilities and their typical outputs are described briefly. Finally, the results of a comprehensive literature search on desiccant cooling are presented in a bibliography. The bibliography contains approximately 900 citations on desiccant cooling.

  13. Desiccant cooling: State-of-the-art assessment

    Energy Technology Data Exchange (ETDEWEB)

    Pesaran, A.A.; Penney, T.R.; Czanderna, A.W.

    1992-10-01

    The objectives of this document are to present an overview of the work accomplished to date on desiccant cooling to provide assessment of the state of the art of desiccant cooling technology in the field of desiccant material dehumidifier components, desiccant systems, and models. The report also discusses the factors that affect the widespread acceptance of desiccant cooling technology. This report is organized as follows. First, a basic description and historical overview of desiccant cooling technology is provided. Then, the recent research and development (R&D) program history (focusing on DOE`s funded efforts) is discussed. The status of the technology elements (materials, components, systems) is discussed in detail and a preliminary study on the energy impact of desiccant technology is presented. R&D needs for advancing the technology in the market are identified. The National Renewable Energy Laboratory`s unique desiccant test facilities and their typical outputs are described briefly. Finally, the results of a comprehensive literature search on desiccant cooling are presented in a bibliography. The bibliography contains approximately 900 citations on desiccant cooling.

  14. Electrochemical biosensors for Salmonella: State of the art and challenges in food safety assessment.

    Science.gov (United States)

    Silva, Nádia F D; Magalhães, Júlia M C S; Freire, Cristina; Delerue-Matos, Cristina

    2018-01-15

    According to the recent statistics, Salmonella is still an important public health issue in the whole world. Legislated reference methods, based on counting plate methods, are sensitive enough but are inadequate as an effective emergency response tool, and are far from a rapid device, simple to use out of lab. An overview of the commercially available rapid methods for Salmonella detection is provided along with a critical discussion of their limitations, benefits and potential use in a real context. The distinguished potentialities of electrochemical biosensors for the development of rapid devices are highlighted. The state-of-art and the newest technologic approaches in electrochemical biosensors for Salmonella detection are presented and a critical analysis of the literature is made in an attempt to identify the current challenges towards a complete solution for Salmonella detection in microbial food control based on electrochemical biosensors. Copyright © 2017 Elsevier B.V. All rights reserved.

  15. State of the Art in Pediatric Lung Transplantation.

    Science.gov (United States)

    Lancaster, Timothy S; Eghtesady, Pirooz

    2018-04-24

    Pediatric lung transplantation is a highly specialized therapy for end stage pulmonary disease in children, performed in only a handful of transplant centers around the world. Advancement in the field has been made on many fronts in recent years, including in public policy and organ allocation strategies, donor selection and management, emerging technologies for donor lung rehabilitation and bridge-to-transplant support of listed candidates, and ongoing refinement of surgical techniques. Despite this progress, children continue to suffer discrepant waitlist mortality and longer waiting times than their adult counterparts, and face special challenges of donor availability and size matching. Here we review the current state of the art in pediatric lung transplantation, reviewing progress made to date and further opportunities to improve care for this unique group of patients. Copyright © 2018 Elsevier Inc. All rights reserved.

  16. MOO: Using a Computer Gaming Environment to Teach about Community Arts

    Science.gov (United States)

    Garber, Elizabeth

    2004-01-01

    In this paper, the author discusses the use of an interactive computer technology, "MOO" (Multi-user domain, Object-Oriented), in her art education classes for preservice teachers. A MOO is a text-based environment wherein interactivity is centered on text exchanges made between users based on problems or other materials created by teachers. The…

  17. Selective Snapshot of State-of-the-Art Artificial Intelligence & Robotics with Reference to the Icarus Starship

    Science.gov (United States)

    Ellery, A.

    Since the remarkable British Interplanetary Society starship study of the late 1970s - Daedalus - there have been significant developments in the areas of artificial intelligence and robotics. These will be critical technologies for any starship as indeed they are for the current generation of exploratory spacecraft and in-situ planetary robotic explorers. Although early visions of truly intelligent robots have yet to materialize (reasons for which will be outlined), there are nonetheless revolutionary developments which have attempted to address at least some of these earlier unperceived deficiencies. The current state of the art comprises a number of separate strands of research which provide components of robotic intelligence though no over- arching approach has been forthcoming. The first question to be considered is the level of intelligent functionality required to support a long-duration starship mission. This will, at a minimum, need to be extensive imposed by the requirement for complex reconfigurability and repair. The second question concerns the tools that we have at our disposal to implement the required intelligent functions of the starship. These are based on two very different approaches - good old-fashioned artificial intelligence (GOFAI) based on logical theorem-proving and knowledge-encoding recently augmented by modal, temporal, circumscriptive and fuzzy logics to address the well-known “frame problem”; and the more recent soft computing approaches based on artificial neural networks, evolutionary algorithms and immunity models and their variants to implement learning. The former has some flight heritage through the Remote Agent architecture whilst the latter has yet to be deployed on any space mission. However, the notion of reconfigurable hardware of recent interest in the space community warrants the use of evolutionary algorithms and neural networks implemented on field programmable gate array technology, blurring the distinction between