WorldWideScience

Sample records for techniques selected papers

  1. Selected papers

    CERN Document Server

    Elgot, Calvin C

    1982-01-01

    Cal Elgot was a very serious and thoughtful researcher, who with great determi­ nation attempted to find basic explanations for certain mathematical phenomena­ as the selection of papers in this volume well illustrate. His approach was, for the most part, rather finitist and constructivist, and he was inevitably drawn to studies of the process of computation. It seems to me that his early work on decision problems relating automata and logic, starting with his thesis under Roger Lyndon and continuing with joint work with Biichi, Wright, Copi, Rutledge, Mezei, and then later with Rabin, set the stage for his attack on the theory of computation through the abstract treatment of the notion of a machine. This is also apparent in his joint work with A. Robinson reproduced here and in his joint papers with John Shepherdson. Of course in the light of subsequent work on decision problems by Biichi, Rabin, Shelah, and many, many others, the subject has been placed on a completely different plane from what it was whe...

  2. Selected papers

    CERN Document Server

    Tamm, I E; Frenkel, V Ya

    1991-01-01

    I.E. Tamm is one of the great figures of 20th-century physics and the mentor of the late A.D. Sakharov. Together with I.M. Frank, he received the Nobel Prize in 1958 for the explanation of the Cherenkov effect. This book contains an annotated selection of his most important contributions to physics literature and essays on his contemporaries - Mandelstam, Einstein, Landau and Bohr as well as his contributions to the Pugwash conferences. About a third of the selections originally appeared in Russian and are now available to Western readers. This volume includes a preface by Sir Rudolf Peierls, a biography compiled by Tamm's former students, V.Ya. Frenkel and B.M. Bolotovskii, and a complete bibliography. This monograph on quantum theory, science history, particles and fields and the Cherenkov effect is intended for students, researchers, mathematicians and natural scientists in general.

  3. Inkjet printed paper based frequency selective surfaces and skin mounted RFID tags: The interrelation between silver nanoparticle ink, paper substrate and low temperature sintering technique

    NARCIS (Netherlands)

    Sanchez-Romaguera, V.; Wünscher, S.; Turki, B.M.; Abbel, R.; Barbosa, S.; Tate, D.J.; Oyeka, D.; Batchelor, J.C.; Parker, E.A.; Schubert, U.S.; Yeates, S.G.

    2015-01-01

    Inkjet printing of functional frequency selective surfaces (FSS) and radio frequency identification (RFID) tags on commercial paper substrates using silver nanoparticle inks sintered using low temperature thermal, plasma and photonic techniques is reported. Printed and sintered FSS devices demonstra

  4. Sustainable agriculture - selected papers

    OpenAIRE

    Krasowicz, Stanisław; Wrzaszcz, Wioletta; Zegar, Jozef St.

    2007-01-01

    The concept of research on socially sustainable agriculture. Features of sustainable agriculture. Sustainability of private farms in the light of selected criteria. Subsistence agricultural holdings and the sustainable development of agriculture. Sustainable farms in the light of the FADN data. Description of organic holdings in Poland.

  5. Selected papers in hydrologic sciences

    Science.gov (United States)

    A collection of short topical papers providing significant results of hydrologic studies by the U.S. Geological Survey, Department of the Interior, has been published as “Selected Papers in the Hydrologic Sciences, Volume 1” (Water-Supply Paper 2262). Edited by Eric L. Meyer, “Selected Papers in the Hydrologic Sciences“ is a new journal-type publication that will be a part of the existing U.S. Geological Survey Water-Supply Paper series. The “journal” is aimed at meeting the widespread public and professional interest of the hydrologic community in timely results from hydrologic studies derived from federal research programs, federal-state cooperative programs, and some work done on behalf of other federal agencies.This first volume, comprising eight papers, addresses a broad array of topics covering sediment chemistry, pesticides, toxic metals, and streamflow characteristics. Included are papers on a technique to measure oxygen in the root zone of saturated and unsaturated soils; measurement of surface runoff and collection of sediment samples from small areas; organic carbon in volcanic ash from Mount St. Helens, Washington; organochlorine pesticide and polychlorinated biphenyl in the Schuylkill River, Pennsylvania; interference of cadmium carbonate precipitation in the determination of cation exchange separation factors; confidence limtis for determining concentrations of tracer particles in sediment samples; determination of aquatic humic substances in natural water; and use of channel cross-section properties for estimating streamflow characteristics.

  6. Abstracts of Selected Papers

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    The present inflation is compound inflation influenced by internal and external factors. The paper brings forward three stages of supply changes of working-age population: 1) Not until 2010, the first stage can be described as a buyer's market of labor, i

  7. Abstracts of Selected Papers

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    On the Social Solidarity of Organization An Empirical Analysis Li Hanlin Abstract: Based on the 2002 survey data, this paper tries to measure solidarity in organization. The operationalization for this measurement goes from two points of view. One is from the degree of cohesion and another one is from the degree of vulnerability. To observe and measure the degree of cohesion three subscales like social support, vertical integration and organizational identity have been used. To observe and measure the degree of vulnerability other three subscales like dissatisfaction, relative deprivation and anomie have been used. The paper tries to explore finally under which condition the organization behavior and behavior orientation could go to the similarity or make some difference. Key words: Organization Cohesion Vulnerability Organization Behavior

  8. Selected papers on classical analysis

    CERN Document Server

    Nomizu, Katsumi

    2001-01-01

    This volume contains papers that originally appeared in Japanese in the journal Sūgaku. Ordinarily the papers would appear in the AMS translation of that journal, but to expedite publication, the Society has chosen to publish them as a volume of selected papers. The papers here are in the general area of mathematical analysis as it pertains to free probability theory.

  9. Quantum interaction. Revised selected papers

    Energy Technology Data Exchange (ETDEWEB)

    Song, Dawei; Zhang, Peng; Wang, Lei [Aberdeen Univ. (United Kingdom). School of Computing; Melucci, Massimo [Padua Univ., Padova (Italy). Dept. of Information Engineering; Frommholz, Ingo [Bedfordshire Univ. (United Kingdom); Arafat, Sachi (eds.) [Glasgow Univ. (United Kingdom). School of Computing Science

    2011-07-01

    This book constitutes the thoroughly refereed post-conference proceedings of the 5th International Symposium on Quantum Interaction, QI 2011, held in Aberdeen, UK, in June 2011. The 26 revised full papers and 6 revised poster papers, presented together with 1 tutorial and 1 invited talk were carefully reviewed and selected from numerous submissions during two rounds of reviewing and improvement. The papers show the cross-disciplinary nature of quantum interaction covering topics such as computation, cognition, mechanics, social interaction, semantic space and information representation and retrieval. (orig.)

  10. Rabi N. Bhattacharya selected papers

    CERN Document Server

    Waymire, Edward

    2016-01-01

    This volume presents some of the most influential papers published by Rabi N. Bhattacharya, along with commentaries from international experts, demonstrating his knowledge, insight, and influence in the field of probability and its applications. For more than three decades, Bhattacharya has made significant contributions in areas ranging from theoretical statistics via analytical probability theory, Markov processes, and random dynamics to applied topics in statistics, economics, and geophysics. Selected reprints of Bhattacharya’s papers are divided into three sections: Modes of Approximation, Large Times for Markov Processes, and Stochastic Foundations in Applied Sciences. The accompanying articles by the contributing authors not only help to position his work in the context of other achievements, but also provide a unique assessment of the state of their individual fields, both historically and for the next generation of researchers. Rabi N. Bhattacharya: Selected Papers will be a valuable resource for yo...

  11. Selected papers on optomechanical design

    Science.gov (United States)

    O'Shea, Donald C.

    The papers included in this volume deal with a variety of topics in optical and optoelectronic science, engineering, and technology under the following headings: design, materials, tolerancing and specification, mounting, mechanical analysis, thermal analysis, stabilization, baffling, assembly and alignment, and scanning. Particular topics discussed include selection of materials and processes for metal optics, trends and limits in the production of optical elements and optical systems, aerospace mounts for down-to-earth optics, and thermal effects in optical systems. Papers are also presented on integrating Nd:YAG lasers into optical systems, line-of-sight steering and stabilization, and motors and control systems for rotating mirror deflectors.

  12. Selected papers from ESSDERC 2014

    Science.gov (United States)

    Bez, Roberto; Meneghesso, Gaudenzio; Pavan, Paolo; Zanoni, Enrico

    2015-11-01

    This special issue of Solid State Electronics includes 28 paper selected from the best presentations given at the 44th European Solid-State Device Research Conference (ESSDERC 2014, September 22-26, 2014 - Venice, Italy). These papers cover different topics in the research on solid-state devices. These topics are used also to organize the conference presentations in 7 tracks: Advanced CMOS: Devices, Process and Integration; Microwave, Opto and Power Solid-State Devices; Modeling and Simulation; Characterization, Reliability and Yield; Advanced and Emerging Memories; MEMS, NEMS, Bio-sensors and Display Technologies; Emerging non-CMOS Devices and Technologies.

  13. CHROMATOGRAPHIC TECHNIQUES IN PHARMACEUTICAL ANALYSIS IN POIAND: HISTORY AND THE PRESENCE ON THE BASIS OF PAPERS PUBLISHED IN SELECTED POLISH PHARMACEUTICAL JOURNALS IN XX CENTURY.

    Science.gov (United States)

    Bilek, Maciej; Namieśnik, Jacek

    2016-01-01

    For a long time, chromatographic techniques and techniques related to them have stimulated the development of new procedures in the field of pharmaceutical analysis. The newly developed methods, characterized by improved metrological parameters, allow for more accurate testing of, among others, the composition of raw materials, intermediates and final products. The chromatographic techniques also enable studies on waste generated in research laboratories and factories producing pharmaceuticals and parapharmaceuticals. Based on the review of reports published in Polish pharmaceutical journals, we assessed the impact of chromatographic techniques on the development of pharmaceutical analysis. The first chromatographic technique used in pharmaceutical analysis was a so-called capillary analysis. It was applied in the 1930s to control the identity of pharmaceutical formulations. In the 1940s and 1950s, the chromatographic techniques were mostly a subject of review publications, while their use in experimental work was rare. Paper chromatography and thin layer chromatography were introduced in the 1960s and 1970s, respectively. These new analytical tools have contributed to the intensive development of research in the field of phytochemistry and the analysis of herbal medicines. The development of colunm chromatography-based techniques, i.e., gas chromatography and high performance liquid chromatography took place in the end of 20th century. Both aforementioned techniques were widely applied in pharmaceutical analysis, for example, to assess the stability of drugs, test for impurities and degradation products as well as in pharmacokinetics studies. The first decade of 21" century was the time of new detection methods in gas and liquid chromatography. The information sources used to write this article were Polish pharmaceutical journals, both professional and scientific, originating from the interwar and post-war period, i.e., "Kronika Farmaceutyczna", "Farmacja Wsp

  14. Open Education. Introduction to selected papers

    Directory of Open Access Journals (Sweden)

    Inés Gil-Jaurena

    2017-06-01

    Full Text Available This issue of Open Praxis compiles selected papers presented at the Open Education Consortium Global Conference, held in Cape Town (South Africa on March 8-10, 2017. Additionaly, the Innovative Practice section includes three papers.

  15. Biomolecule immobilization techniques for bioactive paper fabrication.

    Science.gov (United States)

    Kong, Fanzhi; Hu, Yim Fun

    2012-04-01

    Research into paper-based sensors or functional materials that can perform analytical functions with active recognition capabilities is rapidly expanding, and significant research effort has been made into the design and fabrication of bioactive paper at the biosensor level to detect potential health hazards. A key step in the fabrication of bioactive paper is the design of the experimental and operational procedures for the immobilization of biomolecules such as antibodies, enzymes, phages, cells, proteins, synthetic polymers and DNA aptamers on a suitably prepared paper membrane. The immobilization methods are concisely categorized into physical absorption, bioactive ink entrapment, bioaffinity attachment and covalent chemical bonding immobilization. Each method has individual immobilization characteristics. Although every biomolecule-paper combination has to be optimized before use, the bioactive ink entrapment method is the most commonly used approach owing to its general applicability and biocompatibility. Currently, there are four common applications of bioactive paper: (1) paper-based bioassay or paper-based analytical devices for sample conditioning; (2) counterfeiting and countertempering in the packaging and construction industries; (3) pathogen detection for food and water quality monitoring; and (4) deactivation of pathogenic bacteria using antimicrobial paper. This article reviews and compares the different biomolecule immobilization techniques and discusses current trends. Current, emerging and future applications of bioactive paper are also discussed.

  16. Selected papers for global `95 concerning plutonium

    Energy Technology Data Exchange (ETDEWEB)

    Sutcliffe, W.G. [ed.

    1996-06-14

    This report contains selected papers from the Global `95 Conference ``Evaluation of Emerging Nuclear Fuel Cycle Systems,`` held in Versailles, Sept. 11-14, 1995. The 11 papers in Part I are from ``Benefits and Risks of Reprocessing`` sessions. The 7 papers in Part II are some of the more interesting poster papers that relate to the use of Pu for power generation. Finally, the 3 papers are on the topic of management and disposition of Pu from retired nuclear weapons.

  17. Special Issue: Selected papers from ECS'97

    DEFF Research Database (Denmark)

    1999-01-01

    This Special Issue of Analog Integrated Circuits and Signal Processing presents extended versions of selected papers from the First Electronic Circuits and Systems Conference (ECS'97) which was held on September 4-5, 1997, in Bratislava, Slovakia.......This Special Issue of Analog Integrated Circuits and Signal Processing presents extended versions of selected papers from the First Electronic Circuits and Systems Conference (ECS'97) which was held on September 4-5, 1997, in Bratislava, Slovakia....

  18. Special Issue: Selected papers from ECS'97

    DEFF Research Database (Denmark)

    1999-01-01

    This Special Issue of Analog Integrated Circuits and Signal Processing presents extended versions of selected papers from the First Electronic Circuits and Systems Conference (ECS'97) which was held on September 4-5, 1997, in Bratislava, Slovakia.......This Special Issue of Analog Integrated Circuits and Signal Processing presents extended versions of selected papers from the First Electronic Circuits and Systems Conference (ECS'97) which was held on September 4-5, 1997, in Bratislava, Slovakia....

  19. Editorial: Extended papers selected from ESSDERC 2015

    NARCIS (Netherlands)

    Grasser, Tibor; Schmitz, Jurriaan; Lemme, Max C.

    2016-01-01

    This special issue of Solid State Electronics includes 28 papers which have been carefully selected from the best presentations given at the 45th European Solid-State Device Research Conference (ESSDERC 2015) held from September 14–18, 2015 in Graz, Austria. These papers cover a wide range of topics

  20. Foreseeing techniques and control of emissions in thermal power plants. Workshop Latin American. [Selected Papers]; Control y tecnicas de prevision de las emisiones de centrales termoelectricas

    Energy Technology Data Exchange (ETDEWEB)

    Saldana, R.; Morales, F.; Urrutia, M. [eds.] [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1996-12-31

    This document contains the conference proceedings of the Latin-American Workshop ``Control and Prevision Techniques of Emissions in Power Plants`` carried out in Cuernavaca, Mexico on June 1996, with the participation of representatives of Argentina, Chile, Guatemala, Colombia, Ecuador, Mexico, Nicaragua, Panama and Venezuela, as well as specialists from the European Union. The core issue analyzed in this workshop was the control and the evaluation techniques of polluting emissions in Power Plants [Espanol] Este documento contiene las memorias de conferencia del Taller Latinoamericano ``Control y tecnicas de prevision de las emisiones de centrales termoelectricas`` que se llevo a cabo en Cuernavaca, Mexico en junio de 1996. Participaron representantes de Argentina, Chile, Guatemala, Colombia, Ecuador, Mexico, Nicaragua, Panama y Venezuela, asi como especialistas de la Union Europea. El tema central tratado en este taller fue el control y tecnicas de evaluacion de las emisiones contaminantes en centrales termoelectricas

  1. Extended papers selected from ESSDERC 2015

    Science.gov (United States)

    Grasser, Tibor; Schmitz, Jurriaan; Lemme, Max C.

    2016-11-01

    This special issue of Solid State Electronics includes 28 papers which have been carefully selected from the best presentations given at the 45th European Solid-State Device Research Conference (ESSDERC 2015) held from September 14-18, 2015 in Graz, Austria. These papers cover a wide range of topics related to the research on solid-state devices. These topics are used also to organize the conference submissions and presentations into 7 tracks: CMOS Processes, Devices and Integration; Opto-, Power- and Microwave Devices; Modeling & Simulation; Characterization, Reliability & Yield; Advanced & Emerging Memories; MEMS, Sensors & Display Technologies; Emerging Non-CMOS Devices & Technologies.

  2. Classroom Observation Techniques. IDEA Paper No. 4.

    Science.gov (United States)

    Acheson, Keith A.

    Techniques for observing the classroom behavior of teachers and students are examined. These techniques provide a framework for analyzing and understanding classroom interaction, for making decisions about what should be happening, and for changing instructional behavior when it is necessary. The observation methods allow collection, analysis, and…

  3. Selected papers on noise and stochastic processes

    CERN Document Server

    Wax, Nelson

    1954-01-01

    Six classic papers on stochastic process, selected to meet the needs of physicists, applied mathematicians, and engineers. Contents: 1.Chandrasekhar, S.: Stochastic Problems in Physics and Astronomy. 2. Uhlenbeck, G. E. and Ornstein, L. S.: On the Theory of the Browninan Motion. 3. Ming Chen Wang and Uhlenbeck, G. E.: On the Theory of the Browninan Motion II. 4. Rice, S. O.: Mathematical Analysis of Random Noise. 5. Kac, Mark: Random Walk and the Theory of Brownian Motion. 6. Doob, J. L.: The Brownian Movement and Stochastic Equations. Unabridged republication of the Dover reprint (1954). Pre

  4. EDITORIAL: Selected papers from Photon 02

    Science.gov (United States)

    Jones, Julian

    2003-07-01

    Photon02 was the first in a new series of conferences, organized by the UK Consortium for Photonics and Optics (UKCPO). The UKCPO is the forum for all organizations having an interest in optical science and technology, and sought to create in Photon 02 the UK's largest optics event of 2002. Photon 02 brought together the Applied Optics and Optoelectronics conference of the Institute of Physics, the Photonex national exhibition and an Industry Technology Programme. The meeting was held in Cardiff in September 2002 and attracted nearly 400 conference participants and over 800 visitors to the exhibition. This Special Issue of Journal of Optics A: Pure and Applied Optics brings together a selection of papers based on presentations given at the Applied Optics and Optoelectronics conference or, in one or two cases, related work by conference presenters. Whilst the Institute of Physics is an international organization, there is a significant concentration within its membership from the United Kingdom and the Republic of Ireland, as reflected by the selected papers. A collection of a dozen papers or so cannot hope to be a representative sample of work in optics in the UK and Ireland. Nevertheless, some themes of current importance are evident. The UK and Ireland have always been strongly represented in the optical fibre community, represented in this Special Issue by papers on tapered plastic optical fibres (Wong et al), chirped fibre Bragg gratings (Floreani et al) and, with pre-eminence in the field of optical fibre sensors, by papers on UV monitoring (McSherry et al) and alcohol concentration measurement (King et al). One of the most exciting emerging areas in optics worldwide is in structured optical materials, sometimes called `photonic crystals' (Wilson et al), including synthetic opals (Withnall et al) and surface plasmons (reviewed by Zayats and Smolyaninov). Closely associated is the field of diffractive optics, including scalar diffraction theory (Mezouari and

  5. A Comparative Analysis of Biomarker Selection Techniques

    Directory of Open Access Journals (Sweden)

    Nicoletta Dessì

    2013-01-01

    Full Text Available Feature selection has become the essential step in biomarker discovery from high-dimensional genomics data. It is recognized that different feature selection techniques may result in different set of biomarkers, that is, different groups of genes highly correlated to a given pathological condition, but few direct comparisons exist which quantify these differences in a systematic way. In this paper, we propose a general methodology for comparing the outcomes of different selection techniques in the context of biomarker discovery. The comparison is carried out along two dimensions: (i measuring the similarity/dissimilarity of selected gene sets; (ii evaluating the implications of these differences in terms of both predictive performance and stability of selected gene sets. As a case study, we considered three benchmarks deriving from DNA microarray experiments and conducted a comparative analysis among eight selection methods, representatives of different classes of feature selection techniques. Our results show that the proposed approach can provide useful insight about the pattern of agreement of biomarker discovery techniques.

  6. Selected papers on analysis and differential equations

    CERN Document Server

    Nomizu, Katsumi

    2003-01-01

    This volume contains translations of papers that originally appeared in the Japanese journal, Sugaku. The papers range over a variety of topics, including nonlinear partial differential equations, C^*-algebras, and Schrödinger operators.

  7. Selected papers on analysis and differential equations

    CERN Document Server

    Society, American Mathematical

    2010-01-01

    This volume contains translations of papers that originally appeared in the Japanese journal Sūgaku. These papers range over a variety of topics in ordinary and partial differential equations, and in analysis. Many of them are survey papers presenting new results obtained in the last few years. This volume is suitable for graduate students and research mathematicians interested in analysis and differential equations.

  8. Selected papers on analysis and related topics

    CERN Document Server

    2008-01-01

    This volume contains translations of papers that originally appeared in the Japanese journal Sūgaku. The papers range over a variety of topics, including operator algebras, analysis, and statistics. This volume is suitable for graduate students and research mathematicians interested in analysis and its applications.

  9. Selected papers on probability and statistics

    CERN Document Server

    2009-01-01

    This volume contains translations of papers that originally appeared in the Japanese journal Sūgaku. The papers range over a variety of topics in probability theory, statistics, and applications. This volume is suitable for graduate students and research mathematicians interested in probability and statistics.

  10. Selected papers on analysis, probability, and statistics

    CERN Document Server

    Nomizu, Katsumi

    1994-01-01

    This book presents papers that originally appeared in the Japanese journal Sugaku. The papers fall into the general area of mathematical analysis as it pertains to probability and statistics, dynamical systems, differential equations and analytic function theory. Among the topics discussed are: stochastic differential equations, spectra of the Laplacian and Schrödinger operators, nonlinear partial differential equations which generate dissipative dynamical systems, fractal analysis on self-similar sets and the global structure of analytic functions.

  11. Selected papers in k-theory

    CERN Document Server

    Ivanov, Simeon

    1992-01-01

    This book contains papers ranging over a number of topics relating to K-theory, including algebraic number theory, Grothendieck and Whitehead groups, group representation theory, linear algebraic groups, selfadjoint operator algebras, linear operators, homology and cohomology, and the use of K-theory in geometry.

  12. Selected papers of Richard Feynman with commentary

    CERN Document Server

    2000-01-01

    These scientific papers of Richard Feynman are renowned for their brilliant content and the author's striking original style. They are grouped by topic: path integral approach to the foundations of quantum mechanics and quantum field theory, renormalized quantum electrodynamics, theory of superfluid liquid helium, theory of the Fermi interaction, polarons, gravitation, partons, computer theory, etc. Comments on Feynman's topics are provided by the editor, together with biographical notes and a complete bibliography of Feynman's publications.

  13. Selected papers on harmonic analysis, groups, and invariants

    CERN Document Server

    Nomizu, Katsumi

    1997-01-01

    This volume contains papers that originally appeared in Japanese in the journal Sūgaku. Ordinarily the papers would appear in the AMS translation of that journal, but to expedite publication the Society has chosen to publish them as a volume of selected papers. The papers range over a variety of topics, including representation theory, differential geometry, invariant theory, and complex analysis.

  14. SELECTIVE PRESSURE IMPRESSION TECHNIQUE: AN OVERVIEW

    Directory of Open Access Journals (Sweden)

    Arun

    2014-07-01

    Full Text Available Impression is basically an interaction between tissues and impression material. The variety of impression materials and the range of working characteristics of these materials, make possible the development of impression procedures best suited for specific conditions. Our method for making impressions should be based on the basic principles of maximum area coverage and intimate contact so as to achieve the objectives of retention, support, stability, esthetics, preservation of ridge (supporting structures. Various impression techniques have been mentioned in the literature for recording impression of edentulous ridges. These techniques have been classified by different authors as functional, mucostatic, mucocompressive, selective pressure, minimal pressure etc. However none of these techniques has been designated as the ‘time best’ for a particular patient though selective pressure technique has got much attention in the literature. This article is presenting a critical review on the selective pressure impression technique used for edentulous patients.

  15. Implementing Variable Selection Techniques in Regression.

    Science.gov (United States)

    Thayer, Jerome D.

    Variable selection techniques in stepwise regression analysis are discussed. In stepwise regression, variables are added or deleted from a model in sequence to produce a final "good" or "best" predictive model. Stepwise computer programs are discussed and four different variable selection strategies are described. These…

  16. A Survey Paper on Fuzzy Image Segmentation Techniques

    Directory of Open Access Journals (Sweden)

    Ms. R. Saranya Pon Selvi

    2014-03-01

    Full Text Available The image segmentation plays an important role in the day-to-day life. The new technologies are emerging in the field of Image processing, especially in the domain of segmentation.Segmentation is considered as one of the main steps in image processing. It divides a digital image into multiple regions in order to analyze them. It is also used to distinguish different objects in the image. Several image segmentation techniques have been developed by the researchers in order to make images smooth and easy to evaluate. This paper presents a brief outline on some of the most commonly used segmentation techniques like thresholding, Region based, Model based, Edge detection..etc. mentioning its advantages as well as the drawbacks. Some of the techniques are suitable for noisy images.

  17. Mathematical foundation of geodesy selected papers of Torben Krarup

    CERN Document Server

    Borre, K

    2006-01-01

    This volume contains selected papers by Torben Krarup, one of the most important geodesists of the 20th century. The collection includes the famous booklet "A Contribution to the Mathematical Foundation of Physical Geodesy" from 1969, the unpublished "Molodenskij letters" from 1973, the final version of "Integrated Geodesy" from 1978, "Foundation of a Theory of Elasticity for Geodetic Networks" from 1974, as well as trend-setting papers on the theory of adjustment.

  18. Selecting a Sustainable Disinfection Technique for Wastewater Reuse Projects

    Directory of Open Access Journals (Sweden)

    Jorge Curiel-Esparza

    2014-09-01

    Full Text Available This paper presents an application of the Analytical Hierarchy Process (AHP by integrating a Delphi process for selecting the best sustainable disinfection technique for wastewater reuse projects. The proposed methodology provides project managers a tool to evaluate problems with multiple criteria and multiple alternatives which involve non-commeasurable decision criteria, with expert opinions playing a major role in the selection of these treatment technologies. Five disinfection techniques for wastewater reuse have been evaluated for each of the nine criteria weighted according to the opinions of consulted experts. Finally, the VIKOR method has been applied to determine a compromise solution, and to establish the stability of the results. Therefore, the expert system proposed to select the optimal disinfection alternative is a hybrid method combining the AHP with the Delphi method and the VIKOR technique, which is shown to be appropriate in realistic scenarios where multiple stakeholders are involved in the selection of a sustainable disinfection technique for wastewater reuse projects.

  19. Steganographic Techniques of Data Hiding Using Digital Images (Review Paper

    Directory of Open Access Journals (Sweden)

    Babloo Saha

    2012-01-01

    Full Text Available Steganography is an art that involves communication of secret data in an appropriate carrier, e.g., image, audio, video or TCP/IP header file. Steganography’s goal is to hide the very existence of embedded data so as not to arouse an eavesdropper’s suspicion. For hiding secret data in digital images, large varieties of steganographic techniques are available, some are more complex than others, and all of them have their respective pros and cons. Steganography has various useful applications and the technique employed depends on the requirements of the application to be designed for. For instance. applications may require absolute invisibility of the secret data, larger secret data to be hidden or high degree of robustness of the carrier. This paper intends to give thorough understanding and evolution of different existing digital image steganography techniques of data hiding in spatial, transform and compression domains. It covers and integrates recent research work without going in to much detail of steganalysis, which is the art and science of defeating steganography.Defence Science Journal, 2012, 62(1, pp.11-18, DOI:http://dx.doi.org/10.14429/dsj.62.1436

  20. Energy-efficient computing and networking. Revised selected papers

    Energy Technology Data Exchange (ETDEWEB)

    Hatziargyriou, Nikos; Dimeas, Aris [Ethnikon Metsovion Polytechneion, Athens (Greece); Weidlich, Anke (eds.) [SAP Research Center, Karlsruhe (Germany); Tomtsi, Thomai

    2011-07-01

    This book constitutes the postproceedings of the First International Conference on Energy-Efficient Computing and Networking, E-Energy, held in Passau, Germany in April 2010. The 23 revised papers presented were carefully reviewed and selected for inclusion in the post-proceedings. The papers are organized in topical sections on energy market and algorithms, ICT technology for the energy market, implementation of smart grid and smart home technology, microgrids and energy management, and energy efficiency through distributed energy management and buildings. (orig.)

  1. Open Peer Review by a Selected-Papers Network

    Directory of Open Access Journals (Sweden)

    Christopher eLee

    2012-01-01

    Full Text Available A Selected-Papers (SP Network is a network in which researchers who read, write and review articles subscribe to each other based on common interests. Instead of reviewing a manuscript in secret for the Editor of a journal, each reviewer simply publishes his review (typically of a paper he wishes to recommend on the SP network,which automatically forwards it to his subscribers. I present a three phase plan for building a basic SP network,discovering and measuring the detailed structure of research communities, and transforming the SP network itself into an effective publisher of research articles in areas that are not well-supported by existing journals. I show how the SP network provides a new way of measuring impact, catalyzes the emergence of new subfields, and accelerates discovery in existing fields, by providing each reader a fine-grained filter for high-impact.

  2. Birds and frogs selected papers, 1990-2014

    CERN Document Server

    Dyson, Freeman J

    2015-01-01

    This book is a sequel to the volume of selected papers of Dyson up to 1990 that was published by the American Mathematical Society in 1996. The present edition comprises a collection of the most interesting writings of Freeman Dyson, all personally selected by the author, from the period 1990–2014. The five sections start off with an Introduction, followed by Talks about Science, Memoirs, Politics and History, and some Technical Papers. The most noteworthy is a lecture entitled Birds and Frogs to the American Mathematical Society that describes two kinds of mathematicians with examples from real life. Other invaluable contributions include an important tribute to C. N. Yang written for his retirement banquet at Stony Brook University, as well as a historical account of the Operational Research at RAF Bomber Command in World War II provocatively titled A Failure of Intelligence. The final section carries the open-ended question of whether any conceivable experiment could detect single gravitons to provide d...

  3. Selection of productivity improvement techniques via mathematical modeling

    Directory of Open Access Journals (Sweden)

    Mahassan M. Khater

    2011-07-01

    Full Text Available This paper presents a new mathematical model to select an optimal combination of productivity improvement techniques. The proposed model of this paper considers four-stage cycle productivity and the productivity is assumed to be a linear function of fifty four improvement techniques. The proposed model of this paper is implemented for a real-world case study of manufacturing plant. The resulted problem is formulated as a mixed integer programming which can be solved for optimality using traditional methods. The preliminary results of the implementation of the proposed model of this paper indicate that the productivity can be improved through a change on equipments and it can be easily applied for both manufacturing and service industries.

  4. Statistical modelling in biostatistics and bioinformatics selected papers

    CERN Document Server

    Peng, Defen

    2014-01-01

    This book presents selected papers on statistical model development related mainly to the fields of Biostatistics and Bioinformatics. The coverage of the material falls squarely into the following categories: (a) Survival analysis and multivariate survival analysis, (b) Time series and longitudinal data analysis, (c) Statistical model development and (d) Applied statistical modelling. Innovations in statistical modelling are presented throughout each of the four areas, with some intriguing new ideas on hierarchical generalized non-linear models and on frailty models with structural dispersion, just to mention two examples. The contributors include distinguished international statisticians such as Philip Hougaard, John Hinde, Il Do Ha, Roger Payne and Alessandra Durio, among others, as well as promising newcomers. Some of the contributions have come from researchers working in the BIO-SI research programme on Biostatistics and Bioinformatics, centred on the Universities of Limerick and Galway in Ireland and fu...

  5. Proceedings Types for Proofs and Programs, Revised Selected Papers

    CERN Document Server

    Hirschowitz, Tom

    2011-01-01

    Types for Proofs and Programs is the annual meeting of the Types Project, whose aim is to develop the technology of formal reasoning and computer programming based on Type Theory. This is done by improving the languages and computerised tools for reasoning, and by applying the technology in several domains such as analysis of programming languages, certified software, formalisation of mathematics and mathematics education. The 2009 meeting took place in Aussois, France, and we thank the invited speakers Richard Garner, Peter Hancock, Pawe{\\l} Urzyczyn for excellent talks. The present volume consists of papers not necessarily presented at the workshop, selected by Thorsten Altenkirch, Tom Hirschowitz, Christophe Raffalli, and Alan Schmitt, with help from Matthieu Sozeau and Makarius Wenzel.

  6. Open peer review by a selected-papers network.

    Science.gov (United States)

    Lee, Christopher

    2012-01-01

    A selected-papers (SP) network is a network in which researchers who read, write, and review articles subscribe to each other based on common interests. Instead of reviewing a manuscript in secret for the Editor of a journal, each reviewer simply publishes his review (typically of a paper he wishes to recommend) to his SP network subscribers. Once the SP network reviewers complete their review decisions, the authors can invite any journal editor they want to consider these reviews and initial audience size, and make a publication decision. Since all impact assessment, reviews, and revisions are complete, this decision process should be short. I show how the SP network can provide a new way of measuring impact, catalyze the emergence of new subfields, and accelerate discovery in existing fields, by providing each reader a fine-grained filter for high-impact. I present a three phase plan for building a basic SP network, and making it an effective peer review platform that can be used by journals, conferences, users of repositories such as arXiv, and users of search engines such as PubMed. I show how the SP network can greatly improve review and dissemination of research articles in areas that are not well-supported by existing journals. Finally, I illustrate how the SP network concept can work well with existing publication services such as journals, conferences, arXiv, PubMed, and online citation management sites.

  7. Center-configuration selection technique for the reconfigurable modular robot

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    The reconfigurable modular robot has an enormous amount of configurations to adapt to various environments and tasks. It greatly increases the complexity of configuration research in that the possible configuration number of the reconfigurable modular robot grows exponentially with the increase of module number. Being the initial configuration or the basic configuration of the reconfigurable robot, the center-configuration plays a crucial role in system's actual applications. In this paper, a novel center-configuration selection technique has been proposed for reconfigurable modular robots. Based on the similarities between configurations' transformation and graph theory, configuration network has been applied in the modeling and analyzing of these configurations. Configuration adjacency matrix, reconfirmation cost matrix, and center-configuration coefficient have been defined for the configuration network correspondingly. Being similar to the center-location problem, the center configuration has been selected according to the largest center-configuration coefficient. As an example of the reconfigurable robotic system, AMOEBA-I, a three-module reconfigurable robot with nine configurations which was developed in Shenyang Institute of Automation (SIA), Chinese Academy of Sciences (CAS), has been introduced briefly. According to the numerical simulation result, the center-configuration coefficients for these nine configurations have been calculated and compared to validate this technique. Lastly, a center- configuration selection example is provided with consideration of the adjacent configurations. The center-configuration selection technique proposed in this paper is also available to other reconfigurable modular robots.

  8. The General Technique of Selected Harmonics Elimination for Multilevel Converters

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    For high power applications, multilevel converters have many advantages in comparison with other circuit topologies with output transformers. Cascaded inverters are one type of multilevel converters, they are easy to implement, very suitable for modularized layout and packaging. Their manufacturing cost is low. A multilevel PWM technique, called as General Technique of Selected Harmonics Elimination(GTSHE), is proposed in the paper. A general harmonic elimination equation for N cells, M pulses per half cycle, nth harmonic is derived, and verified by simulation results.

  9. Methodological Aspects of Project Techniques Selection for Innovation Project Management

    Directory of Open Access Journals (Sweden)

    Anna Yakovleva

    2014-06-01

    Full Text Available Project Management offers a variety of methodologies which provides managers with different techniques and tools to use during project planning and implementation. At the same time there is a substantial lack of systematized approaches to the management of innovation projects. In this article key factors in the selection of appropriate techniques in innovation project management will first be identified. Theoretical analysis of different project management standards and possibility of their use will then be discussed. In addition how the techniques can be applied will be investigated through academic paper analysis. . This research makes a theoretical contribution to the field of project management by selecting and determining which project management techniques can be adapted and applied to innovation projects. Recommendations for practical application are based on theoretical findings of the research. These include two main factors, which are: influencing the choice of project management techniques and the structure of project selection process. The significance of the results obtained is confirmed by creation of theoretical knowledge, which permits to thoroughly understand and capture issues which may emerge during innovation project planning and implementation, through the use of established project management methodology. Keywords: Project management, Innovation, Project management standard, innovation project, PMBoK, PRINCE2, ICB.

  10. On the selection of dimension reduction techniques for scientific applications

    Energy Technology Data Exchange (ETDEWEB)

    Fan, Y J; Kamath, C

    2012-02-17

    Many dimension reduction methods have been proposed to discover the intrinsic, lower dimensional structure of a high-dimensional dataset. However, determining critical features in datasets that consist of a large number of features is still a challenge. In this paper, through a series of carefully designed experiments on real-world datasets, we investigate the performance of different dimension reduction techniques, ranging from feature subset selection to methods that transform the features into a lower dimensional space. We also discuss methods that calculate the intrinsic dimensionality of a dataset in order to understand the reduced dimension. Using several evaluation strategies, we show how these different methods can provide useful insights into the data. These comparisons enable us to provide guidance to a user on the selection of a technique for their dataset.

  11. Selected papers on number theory and algebraic geometry

    CERN Document Server

    Nomizu, Katsumi

    1996-01-01

    This book presents papers that originally appeared in the Japanese journal Sugaku from the Mathematical Society of Japan. The papers explore the relationship between number theory and algebraic geometry.

  12. Comments on the Co-Emergence of Machine Techniques, Paper-and-Pencil Techniques, and Theoretical Reflection

    Science.gov (United States)

    Monaghan, John; Ozmantar, Mehmet Fatih

    2006-01-01

    We comment on the paper "The co-emergence of machine techniques, paper-and-pencil techniques, and theoretical reflection: A study of CAS use in secondary school algebra" by Carolyn Kieran and Paul Drijvers. We look at aspects of Kieran and Drijvers' analysis with regard to "task-technique-theory" in the light of a model of abstraction in context…

  13. Comments on the Co-Emergence of Machine Techniques, Paper-and-Pencil Techniques, and Theoretical Reflection

    Science.gov (United States)

    Monaghan, John; Ozmantar, Mehmet Fatih

    2006-01-01

    We comment on the paper "The co-emergence of machine techniques, paper-and-pencil techniques, and theoretical reflection: A study of CAS use in secondary school algebra" by Carolyn Kieran and Paul Drijvers. We look at aspects of Kieran and Drijvers' analysis with regard to "task-technique-theory" in the light of a model of abstraction in context…

  14. Early Admissions at Selective Colleges. NBER Working Paper No. 14844

    Science.gov (United States)

    Avery, Christopher; Levin, Jonathan D.

    2009-01-01

    Early admissions is widely used by selective colleges and universities. We identify some basic facts about early admissions policies, including the admissions advantage enjoyed by early applicants and patterns in application behavior, and propose a game-theoretic model that matches these facts. The key feature of the model is that colleges want to…

  15. Papers

    DEFF Research Database (Denmark)

    Thoft-Christensen, Palle

    The chapters in this Volume 7 of a series of PAPERS are based on papers published in the period 2004 - 2008 authored/co-authored by Palle Thoft-Christensen......The chapters in this Volume 7 of a series of PAPERS are based on papers published in the period 2004 - 2008 authored/co-authored by Palle Thoft-Christensen...

  16. Papers

    DEFF Research Database (Denmark)

    Thoft-Christensen, Palle

    The chapters in this Volume 7 of a series of PAPERS are based on papers published in the period 2004 - 2008 authored/co-authored by Palle Thoft-Christensen......The chapters in this Volume 7 of a series of PAPERS are based on papers published in the period 2004 - 2008 authored/co-authored by Palle Thoft-Christensen...

  17. Selective therapeutic hypothermia: A review of invasive and noninvasive techniques

    OpenAIRE

    David Straus; Vinay Prasad; Lorenzo Munoz

    2011-01-01

    OBJECTIVE: Therapeutic hypothermia is a promising treatment to prevent secondary neurologic injury. Clinical utility is limited by systemic complications of global hypothermia. Selective brain cooling remains a largely uninvestigated application. We review techniques of inducing selective brain cooling. METHOD: Literature review. RESULTS: Strategies of inducing selective brain cooling were divided between non-invasive and invasive techniques. Non-invasive techniques were surface cooling and c...

  18. Thirty years of the Landau Institute selected papers

    CERN Document Server

    Khalatnikov, I M

    1996-01-01

    The Landau Institute for Theoretical Physics was created in 1965 by a group of LD Landau's pupils. Very soon, it was widely recognized as one of the world's leading centers in theoretical physics. According to Science Magazine, the Institute in the eighties had the highest citation index among all the scientific organizations in the former Soviet Union. This collection of the best papers of the Institute reflects the development of the many directions in the exact sciences during the last 30 years. The reader can find the original formulations of well-known notions in condensed matter theory,

  19. Machine learning techniques to select variable stars

    Science.gov (United States)

    García-Varela, Alejandro; Pérez, Muriel; Sabogal, Beatriz; Quiroz, Adolfo

    2017-09-01

    In order to perform a supervised classification of variable stars, we propose and evaluate a set of six features extracted from the magnitude density of the light curves. They are used to train automatic classification systems using state-of-the-art classifiers implemented in the R statistical computing environment. We find that random forests is the most successful method to select variables.

  20. Foundations of Information Science Selected papers from FIS 2002

    Directory of Open Access Journals (Sweden)

    Pedro C. Marijuán

    2003-01-01

    Full Text Available The accompanying papers in the first issue of Entropy, volume 5, 2003 were presented at the electronic conference on Foundations of Information Science FIS 2002 (http://www.mdpi.net/fis2002/. The running title of this FIS e-conference was THE NATURE OF INFORMATION: CONCEPTIONS, MISCONCEPTIONS, AND PARADOXES. It was held on the Internet from 6 to 10 May 2002, and was followed by a series of discussions –structured as focused sessions– which took place in the net from 10 May 2002 until 31 January 2003 (more than 400 messages were exchanged, see: http://fis.iguw.tuwien.ac.at/mailings/. This Introduction will briefly survey the problems around the concept of information, will present the central ideas of the FIS initiative, and will contrast some of the basic differences between information and mechanics (reductionism.

  1. NEXT GENERATION NUCLEAR PLANT LICENSING BASIS EVENT SELECTION WHITE PAPER

    Energy Technology Data Exchange (ETDEWEB)

    Mark Holbrook

    2010-09-01

    The Next Generation Nuclear Plant (NGNP) will be a licensed commercial high temperature gas-cooled reactor (HTGR) plant capable of producing the electricity and high temperature process heat for industrial markets supporting a range of end-user applications. The NGNP Project has adopted the 10 CFR 52 Combined License (COL) application process, as recommended in the Report to Congress, dated August 2008, as the foundation for the NGNP licensing strategy. NRC licensing of the NGNP plant utilizing this process will demonstrate the efficacy of licensing future HTGRs for commercial industrial applications. This white paper is one in a series of submittals that will address key generic issues of the COL priority licensing topics as part of the process for establishing HTGR regulatory requirements.

  2. Machine learning techniques to select variable stars

    Directory of Open Access Journals (Sweden)

    García-Varela Alejandro

    2017-01-01

    Full Text Available In order to perform a supervised classification of variable stars, we propose and evaluate a set of six features extracted from the magnitude density of the light curves. They are used to train automatic classification systems using state-of-the-art classifiers implemented in the R statistical computing environment. We find that random forests is the most successful method to select variables.

  3. Appraisal and Analysis on Diversified Web Service Selection Techniques based on QoS Factors

    Directory of Open Access Journals (Sweden)

    N.Balaji

    Full Text Available Numerous monumental changes have been made in the existing web service selection to provide quality of services. The quality of service is a major bottle neck in the recent development. Hitherto various QoS based Web Service Selection Techniques exist. But these techniques lacks in functional and non-functional attributes. This paper consists with the following tasks; segregate various QoS based Web Service selection techniques with their respective merits and demerits, an extensive comparative study on different QoS aware service selection techniques with respect to the user requirements and multiple QoS properties and preferences. This paper also evaluates the performance of discussed techniques based on the strength of various QoS aware Web service selection functionalitiesusing a set of evaluation metrics.

  4. Selected supplies prognosis problems of aviation techniques

    Science.gov (United States)

    Żurek, J.; Czapla, R.

    2016-06-01

    Aviation technology, i.e. aircraft, control and airfield infrastructure wear out, become defective and need servicing. It seems indispensible to maintain facilities and spare parts at a level necessary to keep the technology in commission. The paper discusses the factors influencing spare parts supply requirements to secure air operations. Aviation technology has been classified with regard to various criteria, which influence the choice of supply management strategies, along with availability and aircraft exploitation cost. The method of optimization of the stock for a complex system characterized by series reliability structure according to the wear-out and cost criteria assuming Poisson's process of demand has been presented.

  5. NVC Based Model for Selecting Effective Requirement Elicitation Technique

    Directory of Open Access Journals (Sweden)

    Md. Rizwan Beg

    2012-10-01

    Full Text Available Requirement Engineering process starts from gathering of requirements i.e.; requirements elicitation. Requirementselicitation (RE is the base building block for a software project and has very high impact onsubsequent design and builds phases as well. Accurately capturing system requirements is the major factorin the failure of most of software projects. Due to the criticality and impact of this phase, it is very importantto perform the requirements elicitation in no less than a perfect manner. One of the most difficult jobsfor elicitor is to select appropriate technique for eliciting the requirement. Interviewing and Interactingstakeholder during Elicitation process is a communication intensive activity involves Verbal and Nonverbalcommunication (NVC. Elicitor should give emphasis to Non-verbal communication along with verbalcommunication so that requirements recorded more efficiently and effectively. In this paper we proposea model in which stakeholders are classified by observing non-verbal communication and use it as a basefor elicitation technique selection. We also propose an efficient plan for requirements elicitation which intendsto overcome on the constraints, faced by elicitor.

  6. Construction of flexible metal-organic framework (MOF) papers through MOF growth on filter paper and their selective dye capture.

    Science.gov (United States)

    Park, Jeehyun; Oh, Moonhyun

    2017-09-14

    The conjugation of metal-organic frameworks (MOFs) with other materials is an excellent strategy for the production of advanced materials having desired properties and so appropriate applicability. In particular, the integration of MOFs with a flexible paper is expected to form valuable materials in separation technology. Here we report a simple method for the generation of MOF papers through the compact and uniform growth of MOF nanoparticles on the cellulose surface of a carboxymethylated filter paper. The resulting MOF papers show a selective capture ability for negatively charged organic dyes and they can be used for dye separation through simple filtration of a dye solution on the MOF papers. In addition, MOF papers can be reused after a simple washing process without losing their effective dye capture ability.

  7. Green supplier selection and order allocation in a low-carbon paper industry

    DEFF Research Database (Denmark)

    Govindan, Kannan; Sivakumar, R.

    2016-01-01

    manufacturing industry is presented to elucidate the effectiveness of the proposed model. The results demonstrate a 26.2 % reduction of carbon emission by using recycle products in the production process. The firm benefits by forming a systematic methodology for green supplier evaluation and order allocation......The low-carbon supply chain is one of the predominant topics towards a green economy and it establishes the opportunity to reduce carbon emissions across the product value chain. This paper focuses on recycling and optimized sourcing in the paper industry as a case company. The main objective......-phase hybrid approach. The first phase presents the rating and selection of potential suppliers by considering economics (cost), operational factors (quality and delivery), and environmental criteria (recycle capability and GHG emission control) using Fuzzy Technique for Order of Preference by Similarity...

  8. Selective therapeutic hypothermia: A review of invasive and noninvasive techniques

    Directory of Open Access Journals (Sweden)

    David Straus

    2011-12-01

    Full Text Available OBJECTIVE: Therapeutic hypothermia is a promising treatment to prevent secondary neurologic injury. Clinical utility is limited by systemic complications of global hypothermia. Selective brain cooling remains a largely uninvestigated application. We review techniques of inducing selective brain cooling. METHOD: Literature review. RESULTS: Strategies of inducing selective brain cooling were divided between non-invasive and invasive techniques. Non-invasive techniques were surface cooling and cooling via the upper airway. Invasive cooling methods include transvascular and compartmental (epidural, subdural, subarachnoid and intraventricular cooling methods to remove heat from the brain. CONCLUSION: Selective brain cooling may offer the best strategy for achieving hypothermic neuroprotection. Non-invasive strategies have proven disappointing in human trials. There is a paucity of human experiments using invasive methods of selective brain cooling. Further application of invasive cooling strategies is needed.

  9. 纸质食品接触材料的多环芳烃气相色谱/质谱-选择离子监测法测定%Determination of polycyclic aromatic hydrocarbons in paper packaging materials intended to come into contact with foodstuffs by gas chromatography/mass spectrometry-selected ion monitor technique

    Institute of Scientific and Technical Information of China (English)

    王成云; 杨左军; 徐嵘

    2014-01-01

    An effective gas chromatography/mass spectrometry-selected ion monitoring method was established for the simultaneous determination of the contents of 18 kinds of banned polycyclic aromatic hydrocarbons (PAHs) in paper packaging materials intended to come into contact with foodstuffs. PAHs in paper packaging materials intended to come into contact with foodstuffs were ifrst ultrasonically extracted at 40℃, using hexane/acetone (1:1) as the extraction solvent, then the extract was purified by silica solid phase extraction column, followed by the analysis of gas chromatography/mass spectrometry-selected ion monitor technique. The concentration of each analytes was calibrated by external standard method. The detection limits changed from 0.1μg/kg to 1.0μg/kg at the condition of signal to noise (S/N) of 3. The spiked average recoveries varied from 55.98% to 95.62% while the relative standard deviation (RSD) changed from 2.87% to 6.98%. At the same time, the coefficients were all larger than 0.997. The proposed method was simple, rapid, accurate and sensitive, and could satisfy completely the demand of the analysis of PAHs in paper packaging materials intended to come into contact with foodstuffs. This method was applied to the simultaneous determination of PAHs in commercially available paper packaging materials intended to come into contact with foodstuffs and phennanthrene of high content was detected in a warm beige regenerated packing bag.%建立了一个气相色谱/质谱-选择离子监测方法,对纸质食品接触材料中18种禁用多环芳烃进行了同时测定,该方法以正己烷/丙酮(1∶1)为提取溶剂,40℃下超声提取纸质食品接触材料中的多环芳烃,提取产物经硅胶固相萃取柱净化后进行气相色谱/质谱-选择离子监测法测定,外标法定量。在S/N=3的条件下,各目标化合物的检出限为0.1~1.0μg/kg。方法的加标平均回收率为55.98~95.62%,相对标准偏差为2.87~6

  10. Comparison of efficacy of pulverization and sterile paper point techniques for sampling root canals.

    Science.gov (United States)

    Tran, Kenny T; Torabinejad, Mahmoud; Shabahang, Shahrokh; Retamozo, Bonnie; Aprecio, Raydolfo M; Chen, Jung-Wei

    2013-08-01

    The purpose of this study was to compare the efficacy of the pulverization and sterile paper point techniques for sampling root canals using 5.25% NaOCl/17% EDTA and 1.3% NaOCl/MTAD (Dentsply, Tulsa, OK) as irrigation regimens. Single-canal extracted human teeth were decoronated and infected with Enterococcus faecalis. Roots were randomly assigned to 2 irrigation regimens: group A with 5.25% NaOCl/17% EDTA (n = 30) and group B with 1.3% NaOCl/MTAD (n = 30). After chemomechanical debridement, bacterial samplings were taken using sterile paper points and pulverized powder of the apical 5 mm root ends. The sterile paper point technique did not show growth in any samples. The pulverization technique showed growth in 24 of the 60 samples. The Fisher exact test showed significant differences between sampling techniques (P technique showed no difference between irrigation regimens. However, 17 of the 30 roots in group A and 7 of the 30 roots in group B resulted in growth as detected by pulverization technique. Data showed a significant difference between irrigation regimens (P = .03) in pulverization technique. The pulverization technique was more efficacious in detecting viable bacteria. Furthermore, this technique showed that 1.3% NaOCl/MTAD regimen was more effective in disinfecting root canals. Published by Elsevier Inc.

  11. Special Issue of Selected Papers from Visualization and Data Analysis 2011

    Science.gov (United States)

    Kao, David L.; Wong, Pak Chung

    2012-01-01

    This special issue features the best papers that were selected from the 18th SPIE Conference on Visualization and Data Analysis (VDA 2011). This annual conference is a major international forum for researchers and practitioners interested in data visualization and analytics research, development, and applications. VDA 2011 received 42 high-quality submissions from around the world. Twenty-four papers were selected for full conference papers. The top five papers have been expanded and reviewed for this special issue.

  12. A Study on Feature Selection Techniques in Educational Data Mining

    CERN Document Server

    Ramaswami, M

    2009-01-01

    Educational data mining (EDM) is a new growing research area and the essence of data mining concepts are used in the educational field for the purpose of extracting useful information on the behaviors of students in the learning process. In this EDM, feature selection is to be made for the generation of subset of candidate variables. As the feature selection influences the predictive accuracy of any performance model, it is essential to study elaborately the effectiveness of student performance model in connection with feature selection techniques. In this connection, the present study is devoted not only to investigate the most relevant subset features with minimum cardinality for achieving high predictive performance by adopting various filtered feature selection techniques in data mining but also to evaluate the goodness of subsets with different cardinalities and the quality of six filtered feature selection algorithms in terms of F-measure value and Receiver Operating Characteristics (ROC) value, generat...

  13. Novel technique for mode selection in a multimode fiber laser.

    Science.gov (United States)

    Daniel, J M O; Chan, J S P; Kim, J W; Sahu, J K; Ibsen, M; Clarkson, W A

    2011-06-20

    A simple technique for transverse mode selection in a large-mode-area (multimode) fiber laser is described. The technique exploits the different spectral responses of feedback elements based on a fiber Bragg grating and a volume Bragg grating to achieve wavelength-dependent mode filtering. This approach has been applied to a cladding-pumped thulium-doped fiber laser with a multimode core to achieve a single-spatial-mode output beam with a beam propagation factor (M2) of 1.05 at 1923 nm. Without mode selection the free-running fiber laser has a multimode output beam with an M2 parameter of 3.3. Selective excitation of higher order modes is also possible via the technique and preliminary results for laser oscillation on the LP11 mode are also discussed along with the prospects for scaling to higher power levels.

  14. A Paper on Automatic Fabrics Fault Processing Using Image Processing Technique In MATLAB

    Directory of Open Access Journals (Sweden)

    R.Thilepa

    2011-02-01

    Full Text Available The main objective of this paper is to elaborate how defective fabric parts can beprocessed using Matlab with image processing techniques. In developing countries like Indiaespecially in Tamilnadu, Tirupur the Knitwear capital of the country in three decades yields amajor income for the country. The city also employs either directly or indirectly more than 3lakhs of people and earns almost an income of 12, 000 crores per annum for the country in pastthree decades [2]. To upgrade this process the fabrics when processed in textiles the fault presenton the fabrics can be identified using Matlab with Image processing techniques. This imageprocessing technique is done using Matlab 7.3 and for the taken image, Noise Filtering,Histogram and Thresholding techniques are applied for the image and the output is obtained inthis paper. This research thus implements a textile defect detector with system visionmethodology in image processing.

  15. Aerosol model selection and uncertainty modelling by adaptive MCMC technique

    Directory of Open Access Journals (Sweden)

    M. Laine

    2008-12-01

    Full Text Available We present a new technique for model selection problem in atmospheric remote sensing. The technique is based on Monte Carlo sampling and it allows model selection, calculation of model posterior probabilities and model averaging in Bayesian way.

    The algorithm developed here is called Adaptive Automatic Reversible Jump Markov chain Monte Carlo method (AARJ. It uses Markov chain Monte Carlo (MCMC technique and its extension called Reversible Jump MCMC. Both of these techniques have been used extensively in statistical parameter estimation problems in wide area of applications since late 1990's. The novel feature in our algorithm is the fact that it is fully automatic and easy to use.

    We show how the AARJ algorithm can be implemented and used for model selection and averaging, and to directly incorporate the model uncertainty. We demonstrate the technique by applying it to the statistical inversion problem of gas profile retrieval of GOMOS instrument on board the ENVISAT satellite. Four simple models are used simultaneously to describe the dependence of the aerosol cross-sections on wavelength. During the AARJ estimation all the models are used and we obtain a probability distribution characterizing how probable each model is. By using model averaging, the uncertainty related to selecting the aerosol model can be taken into account in assessing the uncertainty of the estimates.

  16. Detection techniques of selective forwarding attacks in wireless sensor networks: a survey

    CERN Document Server

    Sharma, Preeti; Saluja, Krishan Kumar

    2012-01-01

    The wireless sensor network has become a hot research area due its wide range of application in military and civilian domain, but as it uses wireless media for communication these are easily prone to security attacks. There are number of attacks on wireless sensor networks like black hole attack, sink hole attack, Sybil attack, selective forwarding attacks etc. in this paper we will concentrate on selective forwarding attacks In selective forwarding attacks, malicious nodes behave like normal nodes and selectively drop packets. The selection of dropping nodes may be random. Identifying such attacks is very difficult and sometimes impossible. In this paper we have listed up some detection techniques, which have been proposed by different researcher in recent years, there we also have tabular representation of qualitative analysis of detection techniques

  17. Progress of Space Charge Research on Oil-Paper Insulation Using Pulsed Electroacoustic Techniques

    Directory of Open Access Journals (Sweden)

    Chao Tang

    2016-01-01

    Full Text Available This paper focuses on the space charge behavior in oil-paper insulation systems used in power transformers. It begins with the importance of understanding the space charge behavior in oil-paper insulation systems, followed by the introduction of the pulsed electrostatic technique (PEA. After that, the research progress on the space charge behavior of oil-paper insulation during the recent twenty years is critically reviewed. Some important aspects such as the environmental conditions and the acoustic wave recovery need to be addressed to acquire more accurate space charge measurement results. Some breakthroughs on the space charge behavior of oil-paper insulation materials by the research team at the University of Southampton are presented. Finally, future work on space charge measurement of oil-paper insulation materials is proposed.

  18. Correction to the 2005 paper: "Digit Selection for SRT Division and Square Root"

    OpenAIRE

    Kornerup, Peter

    2014-01-01

    It has been pointed out by counterexamples in a 2013 paper in the IEEE Transactions on Computers [1], that there is an error in the previously ibid.\\ in 2005 published paper [2] on the construction of valid digit selection tables for SRT type division and square root algorithms. The error has been corrected, and new results found on selection constants for maximally redundant digit sets.

  19. The technique of flashback in selected Northern Sotho literary texts

    Directory of Open Access Journals (Sweden)

    M.J. Mojalefa

    2005-07-01

    Full Text Available This article aims at investigating and explaining the application of the technique of flashback in selected Northern Sotho literary texts. Five kinds of flashback are distinguished, namely external retrospection, internal retrospection, mixed retrospection, flashback to complicate events and flashback of similar events. These kinds of flashback have certain and specific functions, such as reminding readers of past events, foregrounding themes of the text, and so on. This technique is evident in a text when ordinary, everyday events turn out to be the key to surprising secrets that are revealed later. Though flashback seems to be similar to foreshadowing (prolepsis in that both techniques contain features of repetition and the narration of a specific experience, the techniques, however, differ in that flashback focuses on the elements of secrecy, suspense and surprise, and foreshadowing does not. This article also reveals that a relationship between flashback and the structure of detective stories can be indicated.

  20. Separation and analysis techniques for bound and unbound alkyl ketene dimer (AKD in paper: A review

    Directory of Open Access Journals (Sweden)

    Sunil Kumar

    2016-11-01

    Full Text Available Alkyl ketene dimer (AKD is the reactive synthetic sizing agent that is used in alkaline or neutral papermaking conditions to provide certain level of hydrophobicity to the paper and board. The sizing mechanism of AKD involves its reaction with the hydroxyl groups on cellulose. However, all of AKD does not chemically react with fibers; some of it may undergo hydrolysis in water to form unstable β-keto acids, which decarboxylate to the corresponding ketone. This portion of AKD remains non-reacted (unbound and adsorbs onto fibers. The sizing effect depends mainly on the quantity of chemically reacted (bound AKD in paper, while the role of unbound forms, that is ketone and oligomer, is still not clear. Both bound and unbound portions of AKD have their own effect on paper. It is important to know the proportion of bound and unbound form of AKD in paper. The different techniques have been adopted for the separation and analysis of bound and unbound AKD present in paper. The aim of this paper is to review and summarize the various techniques provided by the researchers to separate the different forms of AKD and highlight the most important aspects for their separation.

  1. Solvent-dependent on/off valving using selectively permeable barriers in paper microfluidics

    NARCIS (Netherlands)

    Salentijn, G.I.J.; Hamidon, N.N.; Verpoorte, E.

    2016-01-01

    We report on a new way to control solvent flows in paper microfluidic devices, based on the local patterning of paper with alkyl ketene dimer (AKD) to form barriers with selective permeability for different solvents. Production of the devices is a two-step process. In the first step, AKD-treated pap

  2. Advanced energy sources and conversion techniques. Proceedings of a seminar. Volume 1. [35 papers

    Energy Technology Data Exchange (ETDEWEB)

    None

    1958-11-01

    The Seminar was organized as a series of tutorial presentations and round table discussions on a technical level to implement the following: (a) to identify and explore present and projected needs for energy sources and conversion techniques for military applications; (b) to exchange information on current and planned efforts in these fields; (c) to examine the effect of anticipated scientific and technological advances on these efforts; and (d) to present suggested programs aimed at satisfying the military needs for energy sources and conversion techniques. Volume I contains all of the unclassified papers presented at the Seminar. (W.D.M.)

  3. TOPSIS Based Multi-Criteria Decision Making of Feature Selection Techniques for Network Traffic Dataset

    Directory of Open Access Journals (Sweden)

    Raman Singh

    2014-01-01

    Full Text Available Intrusion detection systems (IDS have to process millions of packets with many features, which delay the detection of anomalies. Sampling and feature selection may be used to reduce computation time and hence minimizing intrusion detection time. This paper aims to suggest some feature selection algorithm on the basis of The Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS. TOPSIS is used to suggest one or more choice(s among some alternatives, having many attributes. Total ten feature selection techniques have been used for the analysis of KDD network dataset. Three classifiers namely Naïve Bayes, J48 and PART have been considered for this experiment using Weka data mining tool. Ranking of the techniques using TOPSIS have been calculated by using MATLAB as a tool. Out of these techniques Filtered Subset Evaluation has been found suitable for intrusion detection in terms of very less computational time with acceptable accuracy.

  4. Peak broadening in paper chromatography and related techniques : IV. The mechanism of the mass transfer term in paper chromatography

    NARCIS (Netherlands)

    Ligny, C.L. de; Remijnse, A.G.

    1968-01-01

    The mechanism of peak broadening in paper chromatography is investigated by comparing the peak widths obtained in chromatography with those caused only by diffusion, for a set of amino acids of widely differing RF values and with eight kinds of Whatman paper. The results show that longitudinal diff

  5. How to Select a Journal to Submit and Publish Your Biomedical Paper?

    Directory of Open Access Journals (Sweden)

    Farhad Shokraneh

    2012-03-01

    Full Text Available Introduction: selection of journal for publication purpose is one of concerns of biomedical researchers. They apply various criteria to choose appropriate journal. Here, we have tried to collect main criteria biomedical researchers use to select a journal to submit their work. Methods: we collected these criteria through focus group conversations with researchers during our careers, feedbacks from participants of our scientific writing workshops and non-systematic reviewing of some related literature. Results: we have presented a summative and informative guidance in selection of biomedical journals for biomedical paper submission and publication. Conclusion: Categorized criteria as a mnemonic tool for authors may help the authors in journal selection process.

  6. Modified Nucleoside Triphosphates for in-vitro Selection Techniques

    Science.gov (United States)

    Iribarren, Adolfo; Dellafiore, María; Montserrat, Javier

    2016-05-01

    The development of SELEX (Selective Enhancement of Ligands by Exponential Enrichment) provides a powerful tool for the search of functional oligonucleotides with the ability to bind ligands with high affinity and selectivity (aptamers) and for the discovery of nucleic acid sequences with diverse enzymatic activities (ribozymes and DNAzymes). This technique has been extensively applied to the selection of natural DNA or RNA molecules but, in order to improve chemical and structural diversity as well as for particular applications where further chemical or biological stability is necessary, the extension of this strategy to modified oligonucleotides is desirable. Taking into account these needs, this review intends to collect the research carried out during the past years, focusing mainly on the use of modified nucleotides in SELEX and the development of mutant enzymes for broadening nucleoside triphosphates acceptance. In addition, comments regarding the synthesis of modified nucleoside triphosphate will be briefly discussed.

  7. SEMANTIC WEB SERVICES – DISCOVERY, SELECTION AND COMPOSITION TECHNIQUES

    Directory of Open Access Journals (Sweden)

    Sowmya Kamath S

    2013-02-01

    Full Text Available Web services are already one of the most important resources on the Internet. As an integrated solution for realizing the vision of the Next Generation Web, semantic web services combine semantic web technology with web service technology, envisioning automated life cycle management of web services. This paper discusses the significance and importance of service discovery & selection to business logic, and the requisite current research in the various phases of the semantic web service lifecycle like discovery and selection. We also present several different composition strategies, based on current research, and provide an outlook towards critical future work.

  8. Analysis of liquid penetration in paper structures by advanced imaging techniques

    Science.gov (United States)

    Arthur, Beth Ann

    Ink penetration in paper is influenced by the structure of the interfiber and intrafiber void spaces and the surface characteristics of the fibers. This dissertation describes new techniques to determine the influence of the fiber surfaces and the cell wall internal structure on ink spreading and penetration. The location and penetration of ink is demonstrated by optical, scanning electron, confocal laser scanning, and transmission electron (TEM) microscopy methods. Ink penetration, as determined by each of these methods, is compared. The hemicelluloses of the fiber's internal void surfaces can be determined by immunochemical labeling in conjunction with TEM imaging. It is demonstrated through the use of primary monoclonal antibodies with specificity for hemicelluloses with a secondary colloidal gold marker. This technique provides a way to visualize the location of hemicelluloses inside the cell wall and on the surfaces of nanopores. Combining paper structure with fluid spreading and wicking models can identify the influence of fiber surfaces and the cell wall on drop absorption. Ink spreading coefficients for such modeling are determined through a series of designed experiments (DoE) and comparisons to a theoretical sessile drop. Application: Microscopic techniques used to determine biological and physical locations in plants on a fibrous level also can be used to study ink diffusion, water uptake, and other characteristics of fibrous material. Key Words: Immunolableing of hemicelluloses, DoE, drop spread modeling, ink diffusion.

  9. A Novel Technique of Error Concealment Method Selection in Texture Images Using ALBP Classifier

    Directory of Open Access Journals (Sweden)

    Z. Tothova

    2010-06-01

    Full Text Available There are many error concealment techniques for image processing. In the paper, the focus is on restoration of image with missing blocks or macroblocks. Different methods can be optimal for different kinds of images. In recent years, great attention was dedicated to textures, and specific methods were developed for their processing. Many of them use classification of textures as an integral part. It is also of an advantage to know the texture classification to select the best restoration technique. In the paper, selection based on texture classification with advanced local binary patterns and spatial distribution of dominant patterns is proposed. It is shown, that for classified textures, optimal error concealment method can be selected from predefined ones, resulting then in better restoration. For testing, three methods of extrapolation and texture synthesis were used.

  10. The Effectiveness of Song Technique in Teaching Paper Based TOEFL (PBT’S Listening Comprehension Section

    Directory of Open Access Journals (Sweden)

    Heri Kuswoyo

    2013-07-01

    Full Text Available Among three sections that follow the Paper-Based TOEFL (PBT, many test takers find listening comprehension section is the most difficult. Thus, in this research the researcher aims to explore how students learn PBT’s listening comprehension section effectively through song technique. This sounds like a more interesting and engaging way to learn language because music is a very powerful motivational tool for learning language. To reach the goal of this study, the researcher applied the grammar approach. It is an appropriate approach since the main idea of grammar-based listening exercises is to analyze the language by its components and reconstruct an incomplete text. Besides, the researcher employed an English song as the media the researcher uses the top- down model for the Listening Process.  In this research, the writer tries to share his experience in teaching listening in English department of Teknokrat College by implementing song technique.

  11. Feature Selection for Generator Excitation Neurocontroller Development Using Filter Technique

    Directory of Open Access Journals (Sweden)

    Abdul Ghani Abro

    2011-09-01

    Full Text Available Essentially, motive behind using control system is to generate suitable control signal for yielding desired response of a physical process. Control of synchronous generator has always remained very critical in power system operation and control. For certain well known reasons power generators are normally operated well below their steady state stability limit. This raises demand for efficient and fast controllers. Artificial intelligence has been reported to give revolutionary outcomes in the field of control engineering. Artificial Neural Network (ANN, a branch of artificial intelligence has been used for nonlinear and adaptive control, utilizing its inherent observability. The overall performance of neurocontroller is dependent upon input features too. Selecting optimum features to train a neurocontroller optimally is very critical. Both quality and size of data are of equal importance for better performance. In this work filter technique is employed to select independent factors for ANN training.

  12. Study of Stability Constants of Fe (Iii And Mn (Ii with Chloramphenicol by Paper Electrophoretic Technique

    Directory of Open Access Journals (Sweden)

    Arvind Singh

    2014-12-01

    Full Text Available Stabilty constant of binary complexes of Fe(III and Mn(II with medicinally important ligand chloramphenicol antibiotics in solution were determined by paper electrophoretic technique. Stability constant of the complexes were determined at 25°C temperature and 0.1M (HClO4 ionic strength. Our study is based upon the migration of a spot of metal ions on a paper strip at different pH against mobility gives information about the binary complexes and permits to calculate their stability constant. The stability constant data revealed that chloramphenicol may be used as chelating agent in chelation for medical treatment of metal overload or poisoning.

  13. Computational Linguistics in the Netherlands 2007 : Selected papers from the eighteenth CLIN meeting (CLIN 2007)

    NARCIS (Netherlands)

    Verberne, Suzan; Halteren, Hans van; Coppen, Peter-Arno

    2008-01-01

    This book contains a selection of the papers presented at the eighteenth edition of the Computational Linguistics in the Netherlands (CLIN) conference. The 18th CLIN edition took place at the Radboud University Nijmegen on December 7th, 2007. It was organized by the Language and Speech group at the

  14. Computational Linguistics in the Netherlands 2004 : Selected papers from the fifteenth CLIN meeting

    NARCIS (Netherlands)

    Wouden, Ton van der; Poß, Michaela; Reckman, Hilke; Cremers, Crit

    2005-01-01

    This volume contains a selection of the papers presented at the fifteenth installment of Computational Linguistics in the Netherlands, held at Leiden University on Friday, December 17th, 2004. Organized by the computational linguists of what was at that time called the Leiden Centre for Linguistics

  15. Romance Languages and Linguistic Theory 2013: Selected Papers from 'Going Romance' Amsterdam 2013

    NARCIS (Netherlands)

    Aboh, E.O.; Schaeffer, J.C.; Sleeman, P.

    2015-01-01

    The Going Romance conferences are a major European annual discussion forum for theoretically relevant research on Romance languages. This volume assembles a selection of the papers that were presented at the 27th edition of Going Romance, which was organized by the University of Amsterdam in

  16. Computational Linguistics in the Netherlands 2007 : Selected papers from the eighteenth CLIN meeting (CLIN 2007)

    NARCIS (Netherlands)

    Verberne, Suzan; Halteren, Hans van; Coppen, Peter-Arno

    This book contains a selection of the papers presented at the eighteenth edition of the Computational Linguistics in the Netherlands (CLIN) conference. The 18th CLIN edition took place at the Radboud University Nijmegen on December 7th, 2007. It was organized by the Language and Speech group at the

  17. IV international conference on computational methods in marine engineering : selected papers

    CERN Document Server

    Oñate, Eugenio; García-Espinosa, Julio; Kvamsdal, Trond; Bergan, Pål; MARINE 2011

    2013-01-01

    This book contains selected papers from the Fourth International Conference on Computational Methods in Marine Engineering, held at Instituto Superior Técnico, Technical University of Lisbon, Portugal in September 2011.  Nowadays, computational methods are an essential tool of engineering, which includes a major field of interest in marine applications, such as the maritime and offshore industries and engineering challenges related to the marine environment and renewable energies. The 2011 Conference included 8 invited plenary lectures and 86 presentations distributed through 10 thematic sessions that covered many of the most relevant topics of marine engineering today. This book contains 16 selected papers from the Conference that cover “CFD for Offshore Applications”, “Fluid-Structure Interaction”, “Isogeometric Methods for Marine Engineering”, “Marine/Offshore Renewable Energy”, “Maneuvering and Seakeeping”, “Propulsion and Cavitation” and “Ship Hydrodynamics”.  The papers we...

  18. Educational assessment center techniques for entrance selection in medical school.

    Science.gov (United States)

    ten Cate, Olle; Smal, Ko

    2002-07-01

    Dutch higher education is freely accessible for those who have proper high school qualifications. However, admission to medical schools has been limited by government to regulate manpower planning. Selection has been carried out by a national lottery approach since 1972, but in 2000, the Dutch government asked medical schools to experiment with qualitative selection procedures at their own institutions. The University Medical Center Utrecht School of Medical Sciences has used a technique derived from assessment-center approaches to assist in the medical school admission process. Dutch assessment centers use observation procedures in which candidates act in simulated activities that are characteristic of the vacant position. In April 2001, 61 candidates for 23 places were invited for selection days. After a selection interview, candidates were asked to perform activities that are characteristic of course requirements: (1) studying a three-to-five page text about diagnostic and therapeutic procedures of disease A during one hour; (2) explaining the studied procedures to another candidate and receiving information about disease B, studied by this other candidate, during one hour; (3) answering the questions of a standardized patient about disease A in 15 minutes; and (4) answering the questions of a standardized patient about disease B in 15 minutes. A three-person selection committee behind a one-way screen observed the two 15-minute interviews with the standardized patients. The selection committee independently scored content quality of the information that was given to the standardized patients as well as the quality of attitude towards and communication with both patients. The average scores for these three criteria were weighted equally to arrive at a total score. In addition, each candidate received a score resulting from the interview with the other candidate who explained disease B. This score was combined with the other three to a final score. The Utrecht

  19. Application of the laser spectroscopy techniques for analysis of pigments on paper

    Science.gov (United States)

    Komar, Katarzyna; Śliwiński, Gerard

    2005-09-01

    Techniques of laser emission spectroscopy such as LIPS and LIF are applied to identify pastels and pigments composition for the use in conservation of historical documents. The question of data reliable for pigment identification by these techniques is considered. For model samples made of the cotton paper of chemical composition corresponding to the historical ones, and coated with pastels of different colors the LIPS and LIF spectra are recorded. Samples are excited by the pulsed Nd:YAG laser operating at 355 or 266 nm. The reference Raman spectra are collected, too. Bands characteristic for the blue pigments: PB15, PB29; violet one PV16, and yellow PY 184 are identified exclusively by LIPS in agreement with literature. Also additives such as the barium white found in the Scarlet pastel, and ultramarine (Na8-10[Al6Si6O24]S2-4) with titanium white (TiO2) in the Phthalo Blue are identified, and confirmed by the Raman technique as well. The pigments anthraquinone (PR 168), isoindolinone (PY 110) and monoazo (PY 74) are not revealed. In the LIF spectra only a broad band centered at 612 nm and corresponding to anthraquinone (red pastel) can be clearly assigned.

  20. Analytical Technique of Selection of Constructive Parameters Pneumatichydraulic Springs

    Directory of Open Access Journals (Sweden)

    A. A. Tsipilev

    2014-01-01

    Full Text Available The article "Technique for Analytical Selection of Design Parameters of Pneumatichydraulic Springs concerns the ride smoothness of high-speed vehicles. Author of article Tsipilev A.A. is an assistant at chair "Multi-purpose Tracked Vehicles and Mobile Robots" of BMSTU. The article represents a synthesis of known information on the springing systems and an analysis of relation between spring design data and running gear. It describes standard units of running gear of vehicle in the context of springing systems. Classification of springing systems is considered. Modernization general policy for existing suspensions and prospects for creation of new ones are given. The article considers a design of various pneumatic-hydraulic springs to be set on domestic tracked vehicles. A developed technique allows us to have elastic characteristics of pneumatic-hydraulic springs of various types using these design data and kinematics of the running gear. The article provides recommendations to calculate characteristics of springing systems. The adequacy analysis of the given technique based on the comparison of real and rated characteristics of the existing suspension is conducted. This article can be useful to the experts dealing with springing systems of wheel and tracked vehicles.

  1. Solvent-dependent on/off valving using selectively permeable barriers in paper microfluidics.

    Science.gov (United States)

    Salentijn, G Ij; Hamidon, N N; Verpoorte, E

    2016-03-21

    We report on a new way to control solvent flows in paper microfluidic devices, based on the local patterning of paper with alkyl ketene dimer (AKD) to form barriers with selective permeability for different solvents. Production of the devices is a two-step process. In the first step, AKD-treated paper (hydrophobic) is exposed to oxygen plasma for re-hydrophilization. 3D-printed masks are employed to shield certain areas of this paper to preserve well-defined hydrophobic patterns. In the second step, concentrated AKD in hexane is selectively deposited onto already hydrophobic regions of the paper to locally increase the degree of hydrophobicity. Hydrophilic areas formed in the previous oxygen plasma step are protected from AKD by wetting them with water first to prevent the AKD hexane solution from entering them (hydrophilic exclusion). Characterization of the patterns after both steps shows that reproducible patterns are obtained with linear dependence on the dimensions of the 3D-printed masks. This two-step methodology leads to differential hydrophobicity on the paper: (i) hydrophilic regions, (ii) low-load AKD gates, and (iii) high-load AKD walls. The gates are impermeable to water, yet can be penetrated by most alcohol/water mixtures; the walls cannot. This concept for solvent-dependent on/off valving is demonstrated in two applications. In the first example, a device was developed for multi-step chemical reactions. Different compounds can be spotted separately (closed gates). Upon elution with an alcohol/water mixture, the gates become permeable and the contents are combined. In the second example, volume-defined sampling is introduced. Aqueous sample is allowed to wick into a device and fill a sample chamber. The contents of this sample chamber are eluted perpendicularly with an alcohol/water mixture through a selectively permeable gate. This system was tested with dye solution, and a linear dependence of magnitude of the signal on the sample chamber size was

  2. Application of Fisher Score and mRMR Techniques for Feature Selection in Compressed Medical Images

    Directory of Open Access Journals (Sweden)

    Vamsidhar Enireddy

    2015-12-01

    Full Text Available In nowadays there is a large increase in the digital medical images and different medical imaging equipments are available for diagnoses, medical professionals are increasingly relying on computer aided techniques for both indexing these images and retrieving similar images from large repositories. To develop systems which are computationally less intensive without compromising on the accuracy from the high dimensional feature space is always challenging. In this paper an investigation is made on the retrieval of compressed medical images. Images are compressed using the visually lossless compression technique. Shape and texture features are extracted and best features are selected using the fisher technique and mRMR. Using these selected features RNN with BPTT was utilized for classification of the compressed images.

  3. On Transmit Antenna Selection for Multiuser MIMO Systems with Dirty Paper Coding

    CERN Document Server

    Mohaisen, Manar

    2010-01-01

    In this paper, we address the transmit antenna selection in multi-user MIMO systems with precoding. The optimum and reduced complexity sub-optimum antenna selection algorithms are introduced. QR-decomposition (QRD) based antenna selection is investigated and the reason behind its sub-optimality is analytically derived. We introduce the conventional QRD-based algorithm and propose an efficient QRD-based transmit antenna scheme (maxR) that is both implementation and performance efficient. Moreover, we derive explicit formulae for the computational complexities of the aforementioned algorithms. Simulation results and analysis demonstrate that the proposed maxR algorithm requires only 1% of the computational efforts required by the optimal algorithm for a degradation of 1dB and 0.1dB in the case of linear zero-forcing and Tomlinson-Harashima precoding schemes, respectively.

  4. An improvement direction for filter selection techniques using information theory measures and quadratic optimization

    Directory of Open Access Journals (Sweden)

    Waad Bouaguel

    2012-08-01

    Full Text Available Filter selection techniques are known for their simplicity and efficiency. However this kind of methods doesn’t take into consideration the features inter-redundancy. Consequently the un-removed redundant features remain in the final classification model, giving lower generalization performance. In this paper we propose to use a mathematical optimization method that reduces inter-features redundancy and maximize relevance between each feature and the target variable.

  5. A highly facile and selective Chemo-Paper-Sensor (CPS) for detection of strontium.

    Science.gov (United States)

    Kang, Sung-Min; Jang, Sung-Chan; Huh, Yun Suk; Lee, Chang-Soo; Roh, Changhyun

    2016-06-01

    Chemosensors have attracted increasing attention for their usefulness on-site detection and monitoring. In this study, we elucidated a novel, facile, and highly selective Chemo-Paper-Sensor (CPS) for detection and monitoring of strontium (Sr(2+)) ions, which means a potent colorimetric sensor based on a Chrysoidine G (CG)-coated paper strip. The CPS for highly selective colorimetric detection of strontium ion was handily analyzed to determine the red-green-blue (RGB) value using portable devices such as desktop digital scanner and mobile phone camera, quantitatively. Interestingly, an orange to dark orange color transition was observed when the aqueous and solid paper colorimetric sensor was introduced to Sr(2+) ion, respectively. It was demonstrated that the value of the signal has a linear relationship with concentrations of the strontium in the 500 ppm to 100 ppb range with a detection limit of 200 ppb. We believe that a newly developed Chemo-Paper-Sensor will be useful in a wide range of sensing applications.

  6. A RANDOMIZED SELECTIVE ENCRYPTION USING HASHING TECHNIQUE FOR SECURING VIDEO STREAMS

    Directory of Open Access Journals (Sweden)

    Lizyflorance. C

    2012-11-01

    Full Text Available Digital video transmissions are widely used in network nowadays. Hence, securing its contents and keeping privacy is vital. Several encryption algorithms have been proposed earlier to achieve securevideo transmission. But altogether attaining efficiency, security and flexibility is a major challenge. To transmit a digital video, encryption is necessary to protect its contents from attacks. As the size of the videos are usually large their contents has to be compressed before transmission. Encryption is applied on the video content after compression. One of the encryption technique selective encryption is used for encrypting video. It encrypts only a subset of data. The selective encryption algorithm reduces the amount of the data to be encrypted and achieves a required level of security. In this paper we study the existing selective encryption algorithm and its classifications. The challenges in the selective encryptionalgorithms and some future directions are presented.

  7. Review paper of gateway selection schemes for MANET of NEMO (MANEMO)

    Science.gov (United States)

    Mahmood, Z.; Hashim, A.; Khalifa, O.; Anwar, F.; Hameed, S.

    2013-12-01

    The fast growth of Internet applications brings with it new challenges for researchers to provide new solutions that guarantee better Internet access for mobile hosts and networks. The globally reachable, Home-Agent based, infrastructure Network Mobility (NEMO) and the local, multi-hop, and infrastructure-less Mobile Ad hoc Network (MANET) developed by Internet Engineering Task Force (IETF) support different topologies of the mobile networks. A new architecture was proposed by combining both topologies to obtain Mobile Ad Hoc NEMO (MANEMO). However, the integration of NEMO and MANET introduces many challenges such as network loops, sub-optimal route, redundant tunnel problem, absence of communication without Home Agent reachability, and exit router selection when multiple Exit Routers to the Internet exist. This paper aims to review the different proposed models that could be used to implement the gateway selection mechanism and it highlights the strengths as well as the limitations of these approaches.

  8. Quantum mechanics, high energy physics and accelerators selected papers of John S Bell (with commentary)

    CERN Document Server

    Bell, John Stewart; Gottfried, Kurt; Veltman, Martinus J G

    1994-01-01

    The scientific career of John Stewart Bell was distinguished by its breadth and its quality. He made several very important contributions to scientific fields as diverse as accelerator physics, high energy physics and the foundations of quantum mechanics. This book contains a large part of J S Bell's publications, including those that are recognized as his most important achievements, as well as others that are for no good reason less well known. The selection was made by Mary Bell, Martinus Veltman and Kurt Gottfried, all of whom were involved with John Bell both personally and professionally throughout a large part of his life. An introductory chapter has been written to help place the selected papers in a historical context and to review their significance. This book comprises an impressive collection of outstanding scientific work of one of the greatest scientists of the recent past, and it will remain important and influential for a long time to come.

  9. A win-win technique of stabilizing sand dune and purifying paper mill black-liquor

    Institute of Scientific and Technical Information of China (English)

    WANG Hanjie; Penning de Vries FRITS; JIN Yongcan

    2009-01-01

    The principle and technique were reported here to produce lignin-based sand stabilizing material (LSSM) using extracted lignin from black liquor of straw paper mills. Field tests by using LSSM to stabilize and green sand dunes started in 2002. The field experiment was carried out in August 2005 when the newly formed plant community was 3 years old. The results from the comprehensive field experiment demonstrated that unlike polyvinyl acetate or foamed asphalt commonly used for dune stabilization, LSSM was plant-friendly material and could be used in combination with seeding and planting of desert species. By the help of LSSM, the desert species (i.e., Agriophyllum squarrosum (L.) Moq. and Artemisia desertorum Spreng. etc.) could be used to form community in 2-3 yeas and to stabilize sand dune effectively. The newly formed community was sustainable under an extremely dry climate conditions. The organic matter and total nitrogen in the soil increased significantly as the community were formed, while the change in P and K contents of the soil was negligible.

  10. Highly selective and reversible chemosensor for Pd(2+) detected by fluorescence, colorimetry, and test paper.

    Science.gov (United States)

    Wang, Mian; Liu, Xiaomei; Lu, Huizhe; Wang, Hongmei; Qin, Zhaohai

    2015-01-21

    A "turn-on" fluorescent and colorimetric chemosensor (RBS) for Pd(2+) has been designed and synthesized through introduction of sulfur as a ligand atom to Rhodamine B. RBS exhibits high selectivity (freedom from the interference of Hg(2+ )in particular) and sensitivity toward Pd(2+) with a detection limit as low as 2.4 nM. RBS is also a reversible sensor, and it can be made into test paper to detect Pd(2+) in pure water. Compared to the chemosensors that introduced phosphorus to Rhodamine to detect Pd(2+), RBS can be synthesized more simply and economically.

  11. Through measurement to knowledge the selected papers of Heike Kamerlingh onnes 1853–1926

    CERN Document Server

    Goudaroulis, Yorgos

    1991-01-01

    "Tile; D'apC:Tile; l. DpWTa ()coi 7rpo7rapod)w £ D'T}K,mi'. "between us and Goodness the gods have placed the sweat of our brows". This quote from Isiodos, the first lyrical poet, is jotted on a sheet of paper found among the papers of Heike Kamerlingh Onnes at the Boerhaave Museum, Leiden. On this same sheet, one can also read quotes from Schiller, Goethe, Shakespeare, Homer, Pindar and Dante. Each quote is for somebody or something. It appears to have been a game played at least by Ehrenfest and Crommelin -an unmistakable sign of these two physicists's deep culture. This particular quote was for the "Werkplaats", the Physical Laboratory of the University of Leiden. Our purpose in putting together the Selected Papers of its first Director, Kamerlingh Onnes (1853-1926), is to try and articulate the dominant trends of a different type of culture at Leiden: its physics culture during the years that established low temperature physics as a distinct branch of physics. Our aims in choosing the particular papers a...

  12. Studies on selected polymeric materials using the photoacoustic spectroscopic technique

    Institute of Scientific and Technical Information of China (English)

    Hukum Singh

    2011-01-01

    Polymethylmethacrylate-graft-polybisphenol-A-carbonate (PMMA-G-PC) with 50% grafting is synthesized. The acid (0.18 M, 100 ml) in air at (45±12) ℃ for 3.0 h. Condensation of (PMMA-G-PC) with N-[p-(carboxyl phenyl amino acetic acid)] hydrazide (PCPH) affords polybisphenol-A-carbonate-graft-polymethylmethacrylate hydrazide (PCGH).The photoacoustic (PA) spectra of (PCGH) are recorded in a wavelength range from 200 nm to 800 nm at a modulation frequency of 22 Hz, and compared with those of pure polybisphenol-A-carbonate (PC), (PMMA-G-PC) and (PCPH).In the present work, a non-destructive and non-contact analytical method, namely the photoacoustic technique, is successfully implemented for optical and thermal characterization of selected polymeric materials. The indigenous PA spectrometer used in the present study consists of a 300-W xenon arc lamp, a lock-in amplifier, a chopper, a (1/8)-m monochromator controlled by computer and a home-made PA cell.

  13. Selection for individual recognition and the evolution of polymorphic identity signals in Polistes paper wasps.

    Science.gov (United States)

    Sheehan, M J; Tibbetts, E A

    2010-03-01

    Individual recognition (IR) requires individuals to uniquely identify their social partners based on phenotypic variation. Because IR is so specific, distinctive phenotypes that stand out from the crowd facilitate efficient recognition. Over time, the benefits of unique appearances are predicted to produce a correlation between IR and phenotypic variation. Here, we test whether there is an association between elevated phenotypic polymorphism and IR in paper wasps. Previous work has shown that Polistes fuscatus use variable colour patterns for IR. We test whether two less variable wasp species, Polistes dominulus and Polistes metricus, are capable of IR. As predicted, neither species is capable of IR, suggesting that highly variable colour patterns are confined to Polistes species with IR. This association suggests that elevated phenotypic variation in taxa with IR may be the result of selection for identity signals rather than neutral processes. Given that IR is widespread among social taxa, selection for identity signalling may be an underappreciated mechanism for the origin and maintenance of polymorphism.

  14. York Papers in Lingustics 13. Selected Papers from the Sociolinguistics Symposium (7th, York, England, April 14-16, 1988). Special Number.

    Science.gov (United States)

    Livesey, Paul, Ed.; Verma, Mahenra K., Ed.

    The 25 selected papers contained in this volume reflect the current diversity of interests and research methods within the field of sociolinguistics. Titles include: "What is a Language?"; "The Unreality of Quantitative Figures"; "Addressee-Oriented Features in Spoken Discourse"; "Women's Speech, Women's…

  15. Survey of Techniques for Deep Web Source Selection and Surfacing the Hidden Web Content

    Directory of Open Access Journals (Sweden)

    Khushboo Khurana

    2016-05-01

    Full Text Available Large and continuously growing dynamic web content has created new opportunities for large-scale data analysis in the recent years. There is huge amount of information that the traditional web crawlers cannot access, since they use link analysis technique by which only the surface web can be accessed. Traditional search engine crawlers require the web pages to be linked to other pages via hyperlinks causing large amount of web data to be hidden from the crawlers. Enormous data is available in deep web that can be useful to gain new insight for various domains, creating need to access the information from the deep web by developing efficient techniques. As the amount of Web content grows rapidly, the types of data sources are proliferating, which often provide heterogeneous data. So we need to select Deep Web Data sources that can be used by the integration systems. The paper discusses various techniques that can be used to surface the deep web information and techniques for Deep Web Source Selection.

  16. 3D visualization using pulsed and CW digital holographic tomography techniques (Invited Paper)

    Institute of Scientific and Technical Information of China (English)

    G. Nehmetallah; P. P. Banerjee; D. Ferree; R. Kephart; S. Praharaj

    2011-01-01

    We outline the use of digital holographic tomography to determine the three-dimensional (3D) shapes of falling and static objects, such as lenslets and water droplets. Reconstruction of digitally recorded inline holograms is performed using multiplicative and Radon transform techniques to reveal the exact 3D shapes of the objects.%We outline the use of digital holographic tomography to determine the three-dimensional (3D) shapes of falling and static objects,such as lenslets and water droplets.Reconstruction of digitally recorded inline holograms is performed using multiplicative and Radon transform techniques to reveal the exact 3D shapes of the objects.

  17. Influence of pretreatment techniques on anaerobic digestion of pulp and paper mill sludge: A review.

    Science.gov (United States)

    Veluchamy, C; Kalamdhad, Ajay S

    2017-09-01

    Pulp and paper industry is one of the most polluting, energy and water intensive industries in the world. Produced pulp and paper mill sludge (PPMS) faces a major problem for handling and its management. An anaerobic digestion has become an alternative source. This review provides a detailed summary of anaerobic digestion of PPMS - An overview of the developments and improvement opportunities. This paper explores the different pretreatment methods to enhance biogas production from the PPMS. First, the paper gives an overview of PPMS production, and then it reviews PPMS as a substrate for anaerobic digestion with or without pretreatment. Finally, it discuss the optimal condition and concentration of organic and inorganic compounds required for the anaerobic metabolic activity. Future research should focus on the combination of different pretreatment technologies, relationship between sludge composition, reactor design and its operation, and microbial community dynamics. Copyright © 2017 Elsevier Ltd. All rights reserved.

  18. A framework for landfill site selection using geographic information systems and multi criteria decision making technique

    Science.gov (United States)

    Mat, Nur Azriati; Benjamin, Aida Mauziah; Abdul-Rahman, Syariza; Wibowo, Antoni

    2016-10-01

    The solid waste disposal is one of the facilities which can cause harm to human health and also contribute to severe environmental pollution if it is not properly managed. Therefore, an effective decision on a landfill site selection in order to identify the most suitable area as a new landfill is very important. Since 25 years ago, the integration of geographic information systems (GIS) and multi criteria decision analysis (MCDA) has drawn significant interest among researchers. This integrated technique is commonly used for land use planning and selecting a new landfill site is one of the plan. This paper proposes a framework of landfill site selection with a consideration of resource requirement. This framework is developed by using the integration of GIS and MCDA to identify an appropriate location for landfill siting. A list of selection criteria obtained from the literature considered in selecting the best landfill site is also presented. The results of this study could later be used to help the waste management team in developing an efficient solid waste management system.

  19. High-Rate Disinfection Techniques for Combined Sewer Overflow (Proceedings Paper)

    Science.gov (United States)

    This paper presents high-rate disinfection technologies for combined sewer overflow (CSO). The high-rate disinfection technologies of interest are: chlorination/dechlorination, ultraviolet light irradiation (UV), chlorine dioxide (ClO2 ), ozone (O3), peracetic acid (CH3COOOH ), a...

  20. Peak broadening in paper chromatography and related techniques : V. Conditions for minimum separation time

    NARCIS (Netherlands)

    Lygny, C.L. de; Kok, E.C.M.

    1968-01-01

    In paper and thin-layer chromatography peak broadening is a function of the mean flow rate of the eluent, which in turn is a function of the distances of the starting point and solvent front from the eluent in the tank. Starting from the relationship between peak broadening and the positions of sta

  1. Approximate calculational techniques for radiation protection applications (collection of papers presented at the November 1985 American Nuclear Society meeting)

    Energy Technology Data Exchange (ETDEWEB)

    Rice, A.F.; Roussin, R.W. (comps.)

    1986-09-01

    Although radiation protection principles are, on the whole, well understood and a whole series of computer codes exist for their solution, it is felt that there is a need for practical, approximate techniques to be used by the practicing nuclear engineer for a variety of applications. Within the context of approximate techniques, the papers presented cover a broad overview of specific problems, for example, skyshine and penetration analysis, with applications extending from general nuclear reactor design to spent fuel storage and fusion. Separate abstracts have been prepared for individual papers.

  2. Individual patient information to select patients for different radiation techniques

    NARCIS (Netherlands)

    Quik, E. H.; Feenstra, T. L.; Postmus, D.; Slotman, B. J.; Leemans, C. R.; Krabbe, P. F. M.; Langendijk, J. A.

    2016-01-01

    Background and purpose: Proton therapy is an emerging technique in radiotherapy which results in less dose to the normal tissues with similar target dose than photon therapy, the current standard. Patient-level simulation models support better decision making on which patients would benefit most. Ma

  3. The effect of selected staining techniques on bull sperm morphometry.

    Science.gov (United States)

    Banaszewska, Dorota; Andraszek, Katarzyna; Czubaszek, Magdalena; Biesiada-Drzazga, Barbara

    2015-08-01

    Sperm morphometry has some value as an indicator of reproductive capacity in males. In laboratory practice a variety of slide-staining methods are used during morphological evaluation of semen to predict male fertility. The aim of this study was to determine the effect of staining of semen using four different techniques on the morphometry of the bull sperm cell. The material for the study consisted of semen collected from test bulls of the Black-and-White variety of Holstein-Friesians. The results obtained in the study indicate differences in the dimensions of bull sperm heads when different slide staining techniques were used. The most similar results for sperm head dimensions were obtained in the case of SpermBlue(®) and eosin+gentian violet complex, although statistically significant differences were found between all the staining techniques. Extreme values were noted for the other staining techniques - lowest for the Papanicolaou and highest for silver nitrate, which may indicate more interference in the cell by the reagents used in the staining process. However, silver nitrate staining was best at identifying the structures of the sperm cell. Hence it is difficult to determine which of the staining methods most faithfully reveals the dimensions and shape of the bull sperm.

  4. A new technique to efficiently select Compton-thick AGN

    CERN Document Server

    Severgnini, P; Della Ceca, R

    2012-01-01

    We present a new efficient diagnostic method, based on mid-infrared and X-ray data, to select local (z-0.2. We build up a sample of 43 CT AGN candidates using data from IRAS-PSC and 2XMM catalogue. In order to test the efficiency of the proposed method in selecting CT AGN we use the results of the X-ray spectral analysis performed on all the sources of our sample. After taking into account the different selection effects, we have estimated the number of CT in the local Universe and their density down to the IRAS flux limit of F25=0.5Jy. We find that the diagnostic plot proposed here is an efficient method to select Compton-thick AGN in the nearby Universe since ~84% of the sources populating the proposed CT region are actually CT AGN. Twenty percent are newly-discovered CT AGN. We then estimate the surface density of CT AGN down to the IRAS PSC catalogue flux limit (F25=0.5Jy) that turns out to be ~3e-3 src deg-2. After estimating an equivalent IR-hard X-ray limiting flux, we compare our result with those fou...

  5. An Approximation Technique For Variable Selection Using Cost Criteria

    Science.gov (United States)

    Ryan, Thomas P.

    1978-01-01

    The problem of selecting regression variables using cost criteria is considered. A method is presented which approximates the optimal solution of one of several criterion functions which might be employed. Examples are given and the results are compared with the results of other methods. (Author/JKS)

  6. Tunnel-Site Selection by Remote Sensing Techniques

    Science.gov (United States)

    A study of the role of remote sensing for geologic reconnaissance for tunnel-site selection was commenced. For this study, remote sensing was defined...conventional remote sensing . Future research directions are suggested, and the extension of remote sensing to include airborne passive microwave

  7. A Manual for Selecting Sampling Techniques in Research

    OpenAIRE

    Alvi, Mohsin

    2016-01-01

    The Manual for Sampling Techniques used in Social Sciences is an effort to describe various types of sampling methodologies that are used in researches of social sciences in an easy and understandable way. Characteristics, benefits, crucial issues/ draw backs, and examples of each sampling type are provided separately. The manual begins by describing What is Sampling and its Purposes then it moves forward discussing the two broader types: probability sampling and non-probability sampling. Lat...

  8. Carotid endovascular interventions: patient selection, devices, techniques and tips.

    Science.gov (United States)

    Bosiers, M; Deloose, K; Peeters, P

    2010-02-01

    The optimal treatment of patients with asymptomatic or symptomatic carotid artery disease (CAD) has been a long-lasting debate. The choice between carotid endarterectomy (CEA), carotid artery stenting (CAS) and/or optimal medical therapy to treat patients with CAD, depends on their risk profile. Recent data from EVA-3S, SPACE randomized trials failed to demonstrate non-inferiority for CAS over CEA. However, other publications suggest that with growing experience and the development of dedicated CAS technology, CAS can be performed safely and efficiently. The success of carotid stenting does not solely depend on the operator's skills and experience, but also on the adequate selection of carotid stents and cerebral protection devices. Currently, CAS practitioners are confronted with a large number of dedicated CAS devices (stents and embolic protection devices). This wide array of products makes individual treatment strategies difficult to generalise as no single device possesses all of the optimal features to treat all types of carotid plaques and patients. This article reviews the principles of patient selection and device selection in contemporary CAS practice.

  9. Guest Editor's introduction: Selected papers from the 4th USENIX Conference on Object-Oriented Technologies and Systems

    Science.gov (United States)

    Sventek, Joe

    1998-12-01

    Hewlett-Packard Laboratories, 1501 Page Mill Road, Palo Alto, CA 94304, USA Introduction The USENIX Conference on Object-Oriented Technologies and Systems (COOTS) is held annually in the late spring. The conference evolved from a set of C++ workshops that were held under the auspices of USENIX, the first of which met in 1989. Given the growing diverse interest in object-oriented technologies, the C++ focus of the workshop eventually became too narrow, with the result that the scope was widened in 1995 to include object-oriented technologies and systems. COOTS is intended to showcase advanced R&D efforts in object-oriented technologies and software systems. The conference emphasizes experimental research and experience gained by using object-oriented techniques and languages to build complex software systems that meet real-world needs. COOTS solicits papers in the following general areas: application of, and experiences with, object-oriented technologies in particular domains (e.g. financial, medical, telecommunication); the architecture and implementation of distributed object systems (e.g. CORBA, DCOM, RMI); object-oriented programming and specification languages; object-oriented design and analysis. The 4th meeting of COOTS was held 27 - 30 April 1998 at the El Dorado Hotel, Santa Fe, New Mexico, USA. Several tutorials were given. The technical program proper consisted of a single track of six sessions, with three paper presentations per session. A keynote address and a provocative panel session rounded out the technical program. The program committee reviewed 56 papers, selecting the best 18 for presentation in the technical sessions. While we solicit papers across the spectrum of applications of object-oriented technologies, this year there was a predominance of distributed, object-oriented papers. The accepted papers reflected this asymmetry, with 15 papers on distributed objects and 3 papers on object-oriented languages. The papers in this special issue are

  10. An Experimental Evaluation of the Effectiveness of Selected Techniques and Resources on Instruction in Vocational Agriculture.

    Science.gov (United States)

    Kahler, Alan A.

    The study was designed to test new instructional techniques in vocational agriculture, determine their effectiveness on student achievement, and compare individual and group instructional techniques. Forty-eight randomly selected Iowa high school vocational agriculture programs with enrollments of 35 students or more, were selected for testing the…

  11. Selected papers from the 7th International Conference on Microtechnologies in Medicine and Biology (MMB 2013)

    Science.gov (United States)

    Meng, Ellis; Takayama, Shuichi

    2014-03-01

    In this special section of Journal of Micromechanics and Microengineering are a collection of the best microengineering papers presented at the 7th International Conference on Microtechnologies in Medicine and Biology (MMB 2013) which took place in the seaside town of Marina del Rey, California, USA on 10-12 April, 2013. During the 3-day conference, participants enjoyed talks from 6 invited keynote speakers and 125 flash oral/poster presentations. The MMB conference is a biennial meeting with the primary purpose of fostering interactions between biologists and medical researchers, clinicians, chemists, physicists and engineers to enhance and strengthen the potential microtechnologies that will revolutionize the fields of medicine and biological sciences. The conference possesses a unique format where all poster presenters provide a brief 60 s oral presentation highlighting their research. This format was devised to provide training and exposure for young researchers, especially PhD students and postdocs, in the field and stimulate interdisciplinary exchanges. Therefore, MMB provides an intimate intellectual venue the facilitate discussions and collaborations to advance new research tools and technologies for medicine and biological sciences. The MMB conference series was co-founded by Professor David Beebe (University of Wisconsin—Madison) and Professor André Dittmar (University of Lyon) and was the first international meeting to provide a forum focusing on emerging applications of microtechnologies to unmet needs in medicine and biology. The series was held for the first time in 2000, in Lyon, France and followed by Madison, USA (2002), Oahu Island in Hawaii, USA (2005), Okinawa, Japan (2006), Québec City, Canada (2009), Lucerne, Switzerland (2011), and Marina del Rey, USA (2013). The next conference will be held in Seoul, Korea in 2015. This collection of articles highlights recent progress in microtechnologies with medical and biological applications. We are

  12. Tunable DBR Lasers Fabricated by Selective Area Growth Technique

    Institute of Scientific and Technical Information of China (English)

    LIU Guoli; ZHANG Jingyuan; WANG Xiaojie; ZHANG Baijun; WANG Wei

    2000-01-01

    The tunable ridge waveguide distributed Brag g reflector (DBR) lasers grown by selective area growth and designed for WDM communication systems at 1.55 μm is reported. The threshold of DBR lasers is 62 mA and the output power is more than 8 mW; the isolation resistance between the active region and Bragg region is 30 kΩ; the tuning range is 6.5 nm which can provide 6 WDM channels with a 100 GHz spacing; in thetuning range, the single mode suppression ratio (SMSR) is more than 32 dB and the output power variation of different wavelengths is less than 3 dB.

  13. Editorial: Technology Enhanced Learning: Moving Theory into Practice - Best Papers Selected from the Conference TELearn 2009

    Directory of Open Access Journals (Sweden)

    Nian-Shing Chen

    2010-03-01

    Full Text Available TELearn 2009 has successfully attracted over 91 submissions, from 4 continents, 11 countries. Half of the submissions came from the outside of Taiwan, which indicates TELearn has become a truly international event. This year, TELearn accept 18 full papers, the acceptance rate of full papers is less than 20%. From the 18 full papers, 5 best papers from Japan, Taiwan, USA, Finland and South Africa were included in this special issue to contribute the understanding of social computing in e-learning and raise potential questions which will require reflection.

  14. Decomposition and carbon storage of selected paper products in laboratory-scale landfills

    Energy Technology Data Exchange (ETDEWEB)

    Wang, Xiaoming, E-mail: wangxiaoming_cqu@163.com [Key Laboratory of Three Gorges Reservoir Region' s Eco-Environment, Ministry of Education, National Center for International Research of Low-Carbon and Green Buildings, Chongqing University, Chongqing (China); Department of Civil, Construction, and Environmental Engineering, Campus Box 7908, North Carolina State University, Raleigh, NC 27695-7908 (United States); De la Cruz, Florentino B. [Department of Civil, Construction, and Environmental Engineering, Campus Box 7908, North Carolina State University, Raleigh, NC 27695-7908 (United States); Ximenes, Fabiano [Department of Primary Industries, New South Wales (Australia); Barlaz, Morton A. [Department of Civil, Construction, and Environmental Engineering, Campus Box 7908, North Carolina State University, Raleigh, NC 27695-7908 (United States)

    2015-11-01

    The objective of this study was to measure the anaerobic biodegradation of different types of paper products in laboratory-scale landfill reactors. The study included (a) measurement of the loss of cellulose, hemicellulose, organic carbon, and (b) measurement of the methane yields for each paper product. The test materials included two samples each of newsprint (NP), copy paper (CP), and magazine paper (MG), and one sample of diaper (DP). The methane yields, carbon storage factors and the extent of cellulose and hemicellulose decomposition all consistently show that papers made from mechanical pulps (e.g., NPs) are less degradable than those made from chemical pulps where essentially all lignin was chemically removed (e.g., CPs). The diaper, which is not only made from chemical pulp but also contains some gel and plastic, exhibited limited biodegradability. The extent of biogenic carbon conversion varied from 21 to 96% among papers, which contrasts with the uniform assumption of 50% by the Intergovernmental Panel on Climate Change (IPCC) for all degradable materials discarded in landfills. Biochemical methane potential tests also showed that the solids to liquid ratio used in the test can influence the results. - Highlights: • Decomposition of major paper products measured under simulated landfill conditions • Varied decomposition behaviors across paper types governed by pulp types • A copy paper made from eucalyptus exhibited inhibited decomposition.

  15. Comparing fairness perceptions of personnel selection techniques of American, French and South African job applicants.

    OpenAIRE

    2001-01-01

    The purpose of the study was to determine whether job applicants' perceptions of commonly used selection procedures vary across nationalities, because a negative impression of prospective employers that use selection techniques that are viewed as unfair, may result. In this study the fairness perceptions of 179 South African employees were compared with results obtained with 142 American and 117 French participants with regard to ten selection techniques using the framework of organisational ...

  16. Applied Computational Intelligence in Engineering and Information Technology Revised and Selected Papers from the 6th IEEE International Symposium on Applied Computational Intelligence and Informatics SACI 2011

    CERN Document Server

    Precup, Radu-Emil; Preitl, Stefan

    2012-01-01

    This book highlights the potential of getting benefits from various applications of computational intelligence techniques. The present book is structured such that to include a set of selected and extended papers from the 6th IEEE International Symposium on Applied Computational Intelligence and Informatics SACI 2011, held in Timisoara, Romania, from 19 to 21 May 2011. After a serious paper review performed by the Technical Program Committee only 116 submissions were accepted, leading to a paper acceptance ratio of 65 %. A further refinement was made after the symposium, based also on the assessment of the presentation quality. Concluding, this book includes the extended and revised versions of the very best papers of SACI 2011 and few invited papers authored by prominent specialists. The readers will benefit from gaining knowledge of the computational intelligence and on what problems can be solved in several areas; they will learn what kind of approaches is advised to use in order to solve these problems. A...

  17. Colloquium paper: a role for relaxed selection in the evolution of the language capacity.

    Science.gov (United States)

    Deacon, Terrence W

    2010-05-11

    Explaining the extravagant complexity of the human language and our competence to acquire it has long posed challenges for natural selection theory. To answer his critics, Darwin turned to sexual selection to account for the extreme development of language. Many contemporary evolutionary theorists have invoked incredibly lucky mutation or some variant of the assimilation of acquired behaviors to innate predispositions in an effort to explain it. Recent evodevo approaches have identified developmental processes that help to explain how complex functional synergies can evolve by Darwinian means. Interestingly, many of these developmental mechanisms bear a resemblance to aspects of Darwin's mechanism of natural selection, often differing only in one respect (e.g., form of duplication, kind of variation, competition/cooperation). A common feature is an interplay between processes of stabilizing selection and processes of relaxed selection at different levels of organism function. These may play important roles in the many levels of evolutionary process contributing to language. Surprisingly, the relaxation of selection at the organism level may have been a source of many complex synergistic features of the human language capacity, and may help explain why so much language information is "inherited" socially.

  18. Selective Chemical-Lithographic Reaction Techniques Using Radiation Technology for Biological Application

    Energy Technology Data Exchange (ETDEWEB)

    Shin, Kwan Woo; Kim, Keo Su; Kim, Hyun Jung; Kim, Hee Suk; Lee, Mi Jin [Sogang University, Seoul (Korea, Republic of)

    2010-05-15

    This report, titled 'selective Chemical-Lithographic Reaction Techniques Using Radiation Technology for Biological Application' contains a research summary, 1) development of selective reaction technology using irradiation of electron beams, 2) preparation of functional surfaces using selective radiation technology on carbon-based nanomaterials, and 3) development of bio-applicable biochips using combinatorial surface modification

  19. Children's Developing Sense of Justice. Unit for Child Studies Selected Papers Number 10.

    Science.gov (United States)

    Black, Hedda

    Presented at a 2-day seminar at the School of Education, University of New South Wales, Australia, this paper reviews theories and research findings concerning the development of children's sense of justice. Part I of the paper briefly discusses Jean Piaget's and Lawrence Kohlberg's theories concerning the development of children's moral…

  20. EDITORIAL: Selected papers from the 19th International Colloquium on Magnetic Films and Surfaces

    Science.gov (United States)

    Miyazaki, T.; Inoue, J.

    2007-03-01

    The 19th International Colloquium on Magnetic Films and Surfaces (ICMFS 2006) was held on 14-18 August 2006 at the Sendai International Center in Sendai, Japan. The purpose of the Colloquium was to bring together scientists working on magnetic thin films and surfaces and to provide an opportunity for presentation and discussion of recent experimental and theoretical advances in the field. 285 scientists from 17 countries (Japan: 167, overseas: 118) participated in the Colloquium, as well as 6 family members. There were 56 oral and 178 poster presentations. The oral presentations consisted of 3 plenary talks, 23 invited talks and 30 contributed talks. The number of presentations by scientific category are as follows: Spin dependent transport: 43 Magnetic storage/memory: 9 Magnetization reversal and fast dynamics: 15 Spin injection and spin transfer torque: 26 Magnetic thin films and multilayers: 71 High spin polarization materials: 17 Hard and soft magnetic materials: 3 Magneto-optics: 5 Characterization techniques for thin films and surfaces: 7 Exchange coupling: 13 Micro- and nanopatterned magnetic structures: 18 Micromagnetic modelling: 2 One of the characteristics of the present Colloquium is an increase in the number of presentations in the field of spin-electronics, as seen above. This Cluster Issue of Journal of Physics D: Applied Physics includes several important papers in this rapidly developing field. We believe that, in the future, the field of magnetic materials will maintain its popularity and, on top of that, other fields such as spintronics materials, materials related to life sciences and medicine and also materials related to the environment will be investigated further. The ICMFS Conference started in London in 1964, and is now one of the world-wide conferences on magnetism. The Colloquium has been held in Japan four times now: the previous ones being the 5th ICMFS in the Mount Fuji area, the 10th at Yokohama and the 17th at Kyoto, which was

  1. Muon track reconstruction and data selection techniques in AMANDA

    Energy Technology Data Exchange (ETDEWEB)

    Ahrens, J.; Bai, X.; Bay, R.; Barwick, S.W.; Becka, T.; Becker, J.K.; Becker, K.-H.; Bernardini, E.; Bertrand, D.; Biron, A.; Boersma, D.J.; Boeser, S.; Botner, O.; Bouchta, A.; Bouhali, O.; Burgess, T.; Carius, S.; Castermans, T.; Chirkin, D.; Collin, B.; Conrad, J.; Cooley, J.; Cowen, D.F.; Davour, A.; De Clercq, C.; DeYoung, T.; Desiati, P.; Dewulf, J.-P.; Ekstroem, P.; Feser, T.; Gaug, M.; Gaisser, T.K.; Ganugapati, R.; Geenen, H.; Gerhardt, L.; Gross, A.; Goldschmidt, A.; Hallgren, A.; Halzen, F.; Hanson, K.; Hardtke, R.; Harenberg, T.; Hauschildt, T.; Helbing, K.; Hellwig, M.; Herquet, P.; Hill, G.C.; Hubert, D.; Hughey, B.; Hulth, P.O.; Hultqvist, K.; Hundertmark, S.; Jacobsen, J.; Karle, A.; Kestel, M.; Koepke, L.; Kowalski, M.; Kuehn, K.; Lamoureux, J.I.; Leich, H.; Leuthold, M.; Lindahl, P.; Liubarsky, I.; Madsen, J.; Marciniewski, P.; Matis, H.S.; McParland, C.P.; Messarius, T.; Minaeva, Y.; Miocinovic, P.; Mock, P.C.; Morse, R.; Muenich, K.S.; Nam, J.; Nahnhauer, R.; Neunhoeffer, T.; Niessen, P.; Nygren, D.R.; Oegelman, H.; Olbrechts, Ph.; Perez de los Heros, C.; Pohl, A.C.; Porrata, R.; Price, P.B.; Przybylski, G.T.; Rawlins, K.; Resconi, E.; Rhode, W.; Ribordy, M.; Richter, S.; Rodriguez Martino, J.; Ross, D.; Sander, H.-G.; Schinarakis, K.; Schlenstedt, S.; Schmidt, T.; Schneider, D.; Schwarz, R.; Silvestri, A.; Solarz, M.; Spiczak, G.M.; Spiering, C.; Stamatikos, M.; Steele, D.; Steffen, P.; Stokstad, R.G.; Sulanke, K.-H.; Streicher, O.; Taboada, I.; Thollander, L.; Tilav, S.; Wagner, W.; Walck, C.; Wang, Y.-R.; Wiebusch, C.H. E-mail: wiebusch@physik.uni-wuppertal.de; Wiedemann, C.; Wischnewski, R.; Wissing, H.; Woschnagg, K.; Yodh, G

    2004-05-21

    The Antarctic Muon And Neutrino Detector Array (AMANDA) is a high-energy neutrino telescope operating at the geographic South Pole. It is a lattice of photo-multiplier tubes buried deep in the polar ice between 1500 and 2000 m. The primary goal of this detector is to discover astrophysical sources of high-energy neutrinos. A high-energy muon neutrino coming through the earth from the Northern Hemisphere can be identified by the secondary muon moving upward through the detector. The muon tracks are reconstructed with a maximum likelihood method. It models the arrival times and amplitudes of Cherenkov photons registered by the photo-multipliers. This paper describes the different methods of reconstruction, which have been successfully implemented within AMANDA. Strategies for optimizing the reconstruction performance and rejecting background are presented. For a typical analysis procedure the direction of tracks are reconstructed with about 2 deg. accurac000.

  2. Astronomical Site Selection for Turkey Using GIS Techniques

    CERN Document Server

    Aksaker, Nazim; Erdogan, M Akif; Erdi, Erdem; Kaba, Kazim; Ak, Tansel; Aslan, Zeki; Bakis, Volkan; Demircan, Osman; Evren, Serdar; Keskin, Varol; Kucuk, Ibrahim; Ozdemir, Tuncay; Ozisik, Tuncay; Selam, Selim O

    2015-01-01

    A site selection of potential observatory locations in Turkey have been carried out by using Multi-Criteria Decision Analysis (MCDA) coupled with Geographical Information Systems (GIS) and satellite imagery which in turn reduced cost and time and increased the accuracy of the final outcome. The layers of cloud cover, digital elevation model, artificial lights, precipitable water vapor, aerosol optical thickness and wind speed were studied in the GIS system. In conclusion of MCDA, the most suitable regions were found to be located in a strip crossing from southwest to northeast including also a diverted region in southeast of Turkey. These regions are thus our prime candidate locations for future on-site testing. In addition to this major outcome, this study has also been applied to locations of major observatories sites. Since no goal is set for \\textit{the best}, the results of this study is limited with a list of positions. Therefore, the list has to be further confirmed with on-site tests. A national fundi...

  3. Evaluation of Select Surface Processing Techniques for In Situ Application During the Additive Manufacturing Build Process

    Science.gov (United States)

    Book, Todd A.; Sangid, Michael D.

    2016-07-01

    Although additive manufacturing offers numerous performance advantages for different applications, it is not being used for critical applications due to uncertainties in structural integrity as a result of innate process variability and defects. To minimize uncertainty, the current approach relies on the concurrent utilization of process monitoring, post-processing, and non-destructive inspection in addition to an extensive material qualification process. This paper examines an alternative approach by evaluating the application of select surface process techniques, to include sliding severe plastic deformation (SPD) and fine particle shot peening, on direct metal laser sintering-produced AlSi10Mg materials. Each surface processing technique is compared to baseline as-built and post-processed samples as a proof of concept for surface enhancement. Initial results pairing sliding SPD with the manufacture's recommended thermal stress relief cycle demonstrated uniform recrystallization of the microstructure, resulting in a more homogeneous distribution of strain among the microstructure than as-built or post-processed conditions. This result demonstrates the potential for the in situ application of various surface processing techniques during the layerwise direct metal laser sintering build process.

  4. Decomposition and carbon storage of selected paper products in laboratory-scale landfills.

    Science.gov (United States)

    Wang, Xiaoming; De la Cruz, Florentino B; Ximenes, Fabiano; Barlaz, Morton A

    2015-11-01

    The objective of this study was to measure the anaerobic biodegradation of different types of paper products in laboratory-scale landfill reactors. The study included (a) measurement of the loss of cellulose, hemicellulose, organic carbon, and (b) measurement of the methane yields for each paper product. The test materials included two samples each of newsprint (NP), copy paper (CP), and magazine paper (MG), and one sample of diaper (DP). The methane yields, carbon storage factors and the extent of cellulose and hemicellulose decomposition all consistently show that papers made from mechanical pulps (e.g., NPs) are less degradable than those made from chemical pulps where essentially all lignin was chemically removed (e.g., CPs). The diaper, which is not only made from chemical pulp but also contains some gel and plastic, exhibited limited biodegradability. The extent of biogenic carbon conversion varied from 21 to 96% among papers, which contrasts with the uniform assumption of 50% by the Intergovernmental Panel on Climate Change (IPCC) for all degradable materials discarded in landfills. Biochemical methane potential tests also showed that the solids to liquid ratio used in the test can influence the results.

  5. Modern Japanese Novels in English: A Selected Bibliography. Service Center Paper on Asian Studies, No. 7.

    Science.gov (United States)

    Beauchamp, Nancy Junko

    Selected contemporary Japanese novels translated into English are compiled in this bibliography as a guide for teachers interested in the possibilities offered by Japanese fiction. The bibliography acquaints teachers with available Japanese fiction that can be incorporated into social sciences or humanities courses to introduce Japan to students…

  6. Rational selection of substrates to improve color intensity and uniformity on microfluidic paper-based analytical devices.

    Science.gov (United States)

    Evans, Elizabeth; Gabriel, Ellen Flávia Moreira; Coltro, Wendell Karlos Tomazelli; Garcia, Carlos D

    2014-05-07

    A systematic investigation was conducted to study the effect of paper type on the analytical performance of a series of microfluidic paper-based analytical devices (μPADs) fabricated using a CO2 laser engraver. Samples included three different grades of Whatman chromatography paper, and three grades of Whatman filter paper. According to the data collected and the characterization performed, different papers offer a wide range of flow rate, thickness, and pore size. After optimizing the channel widths on the μPAD, the focus of this study was directed towards the color intensity and color uniformity formed during a colorimetric enzymatic reaction. According to the results herein described, the type of paper and the volume of reagents dispensed in each detection zone can determine the color intensity and uniformity. Therefore, the objective of this communication is to provide rational guidelines for the selection of paper substrates for the fabrication of μPADs.

  7. A Novel Trajectory Clustering technique for selecting cluster heads in Wireless Sensor Networks

    CERN Document Server

    Munaga, Hazarath; Venkateswarlu, N B

    2011-01-01

    Wireless sensor networks (WSNs) suffers from the hot spot problem where the sensor nodes closest to the base station are need to relay more packet than the nodes farther away from the base station. Thus, lifetime of sensory network depends on these closest nodes. Clustering methods are used to extend the lifetime of a wireless sensor network. However, current clustering algorithms usually utilize two techniques; selecting cluster heads with more residual energy, and rotating cluster heads periodically to distribute the energy consumption among nodes in each cluster and lengthen the network lifetime. Most of the algorithms use random selection for selecting the cluster heads. Here, we propose a novel trajectory clustering technique for selecting the cluster heads in WSNs. Our algorithm selects the cluster heads based on traffic and rotates periodically. It provides the first trajectory based clustering technique for selecting the cluster heads and to extenuate the hot spot problem by prolonging the network lif...

  8. Views of a physicist selected papers of N G van Kampen

    CERN Document Server

    Meijer, Paul Herman E

    2000-01-01

    N G van Kampen is a well-known theoretical physicist who has had a long and distinguished career. His research covers scattering theory, plasma physics, statistical mechanics, and various mathematical aspects of physics. In addition to his scientific work, he has written a number of papers about more general aspects of science. An indefatigable fighter for intellectual honesty and clarity, he has pointed out repeatedly that the fundamental ideas of physics have been needlessly obscured.As those papers appeared in various journals, partly in Dutch, it was felt that it would be worthwhile to col

  9. Selected Correspondence from the Papers of Thomas Pettigrew (1791-1865, Surgeon and Antiquary

    Directory of Open Access Journals (Sweden)

    Gabriel Moshenska

    2012-05-01

    Full Text Available The papers of the nineteenth century antiquary and surgeon Thomas Pettigrew are of considerable interest in the histories of science, medicine and archaeology. The letters presented here were received by Pettigrew between 1817 and 1859, and form part of the Pettigrew Papers held at Yale University. They were transcribed during research into Pettigrew’s life and work, focusing in particular on his contributions to archaeology and Egyptology, and are presented in the form of texts. They are likely to be of interest and use to scholars of early nineteenth century intellectual history, and historians of archaeology in particular.

  10. Autonomous selection of PDE inpainting techniques vs. exemplar inpainting techniques for void fill of high resolution digital surface models

    Science.gov (United States)

    Rahmes, Mark; Yates, J. Harlan; Allen, Josef DeVaughn; Kelley, Patrick

    2007-04-01

    High resolution Digital Surface Models (DSMs) may contain voids (missing data) due to the data collection process used to obtain the DSM, inclement weather conditions, low returns, system errors/malfunctions for various collection platforms, and other factors. DSM voids are also created during bare earth processing where culture and vegetation features have been extracted. The Harris LiteSite TM Toolkit handles these void regions in DSMs via two novel techniques. We use both partial differential equations (PDEs) and exemplar based inpainting techniques to accurately fill voids. The PDE technique has its origin in fluid dynamics and heat equations (a particular subset of partial differential equations). The exemplar technique has its origin in texture analysis and image processing. Each technique is optimally suited for different input conditions. The PDE technique works better where the area to be void filled does not have disproportionately high frequency data in the neighborhood of the boundary of the void. Conversely, the exemplar based technique is better suited for high frequency areas. Both are autonomous with respect to detecting and repairing void regions. We describe a cohesive autonomous solution that dynamically selects the best technique as each void is being repaired.

  11. Adolescent Shyness and Self-Esteem. Unit for Child Studies Selected Papers Number 16.

    Science.gov (United States)

    Orr, Fred

    What shyness is and how it affects teenagers, the various ways in which shyness can be manifest in teenagers, and possible causes of shyness, as well as the role of parents and their relationships with shy young people are discussed in this expanded seminar paper. Some situations in which an adolescent might be shy are identified and guidelines…

  12. Adolescent Thinking: Self-Concept, Relationships and Punk. Unit for Child Studies. Selected Papers Number 28.

    Science.gov (United States)

    Phillips, Shelley

    Beginning with the principle that self-concept and self-esteem are learned, this paper describes the adolescent self and its social concomitants. The depiction of adolescence emphasizes adolescents' ability to think abstractly and their knowledge of the mind's ability to process, direct, and manipulate experience. In contrast with the…

  13. Practice Paper of the Academy of Nutrition and Dietetics: Selecting Nutrient-Dense Foods for Good Health.

    Science.gov (United States)

    Hingle, Melanie D; Kandiah, Jayanthi; Maggi, Annette

    2016-09-01

    The 2015 Dietary Guidelines for Americans encourage selection of nutrient-dense foods for health promotion and disease prevention and management. The purpose of this Academy of Nutrition and Dietetics practice paper is to provide an update regarding the science and practice of nutrient-dense food identification and selection. Characterization of tools used to identify nutrient density of foods is provided and recommendations for how registered dietitian nutritionists and nutrition and dietetics technicians, registered, might use available profiling tools to help consumers select nutrient-dense foods is discussed. Copyright © 2016 Academy of Nutrition and Dietetics. Published by Elsevier Inc. All rights reserved.

  14. Selected papers from the 7th International Conference on Biomimetics, Artificial Muscles and Nano-bio (BAMN2013)

    Science.gov (United States)

    Shahinpoor, Mohsen; Oh, Ilkwon

    2014-07-01

    The 7th International Congress on Biomimetics, Artificial Muscles and Nano-Bio was held on the magnificent and beautiful Jeju Island in Korea on 26-30 August 2013. In June 2007, the volcanic island and lava tube cave systems were designated as UNESCO World Natural Heritage Sites for their natural beauty and unique geographical values. The aim of the congress was to offer high-level lectures, extensive discussions and communications covering the state-of-the-art on biomimetics, artificial muscles, and nano-bio technologies providing an overview of their potential applications in the industrial, biomedical, scientific and robotic fields. This conference provided a necessary platform for an ongoing dialogue between researchers from different areas (chemistry, physics, biology, medicine, engineering, robotics, etc) within biomimetics, artificial muscle and nano-bio technologies. This special issue of Smart Materials and Structures is devoted to a selected number of research papers that were presented at BAMN2013. Of the 400 or so papers and over 220 posters presented at this international congress, 15 papers were finally received, reviewed and accepted for this special issue, following the regular peer review procedures of the journal. The special issue covers polymeric artificial muscles, electroactive polymers, multifunctional nanocomposites, and their applications. In particular, electromechanical performance and other characteristics of ionic polymer-metal composites (IPMCs) fabricated with various commercially available ion exchange membranes are discussed. Additionally, the control of free-edge interlaminar stresses in composite laminates using piezoelectric actuators is elaborated on. Further, the electrode effects of a cellulose-based electroactive paper energy harvester are described. Next, a flexible tactile-feedback touch screen using transparent ferroelectric polymer film vibrators is discussed. A broad coverage of bio-applications of IPMC transducers is

  15. Modification of the coaxial technique for selective salpingography with measurement of tubal perfusion pressures.

    Science.gov (United States)

    Papaioannou, Spyros; Afnan, Masoud; McHugo, Josephine M; Coomarasamy, Aravinthan; Ola, Bolarinde; Sharif, Khaldoun

    2003-05-01

    This article describes the use of the fallopotorque catheter system for transcervical selective salpingography and tubal catheterization under fluoroscopic guidance for the diagnosis and treatment of obstruction of the proximal Fallopian tube. The technique of tubal perfusion pressure assessment during the procedure, using the same catheter system, is also described. The relative advantages of this method of selective salpingography and tubal catheterization are then discussed in the background of previously described techniques.

  16. Filter paper-assisted cell transfer (FaCT) technique: A novel cell-sampling technique for intraoperative diagnosis of central nervous system tumors.

    Science.gov (United States)

    Kawamura, Jumpei; Kamoshida, Shingo; Shimakata, Takaaki; Hayashi, Yurie; Sakamaki, Kuniko; Denda, Tamami; Kawai, Kenji; Kuwao, Sadahito

    2017-04-01

    Intraoperative diagnosis of central nervous system (CNS) tumors provides critical guidance to surgeons in the determination of surgical resection margins and treatment. The techniques and preparations used for the intraoperative diagnosis of CNS tumors include frozen sectioning and cytologic methods (squash smear and touch imprint). Cytologic specimens, which do not have freezing artifacts, are important as an adjuvant tool to frozen sections. However, if the amount of submitted tissue samples is limited, then it is difficult to prepare both frozen sections and squash smears or touch imprint specimens from a single sample at the same time. Therefore, the objective of this study was to derive cells directly from filter paper on which tumor samples are placed. The authors established the filter paper-assisted cell transfer (FaCT) smear technique, in which tumor cells are transferred onto a glass slide directly from the filter paper sample spot after the biopsy is removed. Cell yields and diagnostic accuracy of the FaCT smears were assessed in 40 CNS tumors. FaCT smears had ample cell numbers and well preserved cell morphology sufficient for cytologic diagnosis, even if the submitted tissues were minimal. The overall diagnostic concordance rates between frozen sections and FaCT smears were 90% and 87.5%, respectively (no significant differences). When combining FaCT smears with frozen sections, the diagnostic concordance rate rose to 92.5%. The current results suggest that the FaCT smear technique is a simple and effective processing method that has significant value for intraoperative diagnosis of CNS tumors. Cancer Cytopathol 2017;125:277-282. © 2016 American Cancer Society. © 2017 American Cancer Society.

  17. Introduction to the Special Issue on Information: Selected Papers from “FIS 2010 Beijing”

    Directory of Open Access Journals (Sweden)

    Pedro C. Marijuán

    2012-01-01

    Full Text Available During the last two decades, a systematic re-examination of the whole information science field has taken place around the FIS—Foundations of Information Science—initiative. With the occasion of its Fourth Conference in Beijing 2010, a group of selected contributors and leading practitioners of those fields have been invited to contribute to this Special Issue. What is the status of information science today? What is the relationship between information and the laws of nature? Is information merely “physical”? What is the difference between information and computation? Has the genomic revolution changed the contemporary views on information and life? And what about the nature of social information? Cogent answers to these questions and to quite many others are attempted in the contributions that follow.

  18. Nuclear weapons, scientists, and the post-Cold War challenge selected papers on arms control

    CERN Document Server

    Drell, Sidney D

    2007-01-01

    This volume includes a representative selection of Sidney Drell's recent writings and speeches (circa 1993 to the present) on public policy issues with substantial scientific components. Most of the writings deal with national security, nuclear weapons, and arms control and reflect the author's personal involvement in such issues dating back to 1960. Fifteen years after the demise of the Soviet Union, the gravest danger presented by nuclear weapons is the spread of advanced technology that may result in the proliferation of nuclear weapons. Of most concern would be their acquisition by hostile governments and terrorists who are unconstrained by accepted norms of civilized behavior. The current challenges are to prevent this from happening and, at the same time, to pursue aggressively the opportunity to escape from an outdated nuclear deterrence trap.

  19. Diversity Techniques for Single-Carrier Packet Retransmissions over Frequency-Selective Channels

    Directory of Open Access Journals (Sweden)

    Inbar Fijalkow

    2009-01-01

    Full Text Available In data packet communication systems over multipath frequency-selective channels, hybrid automatic repeat request (HARQ protocols are usually used in order to ensure data reliability. For single-carrier packet transmission in slow fading environment, an identical retransmission of the same packet, due to a decoding failure, does not fully exploit the available time diversity in retransmission-based HARQ protocols. In this paper, we compare two transmit diversity techniques, namely, cyclic frequency-shift diversity and bit-interleaving diversity. Both techniques can be integrated in the HARQ scheme in order to improve the performance of the joint detector. Their performance in terms of pairwise error probability is investigated using maximum likelihood detection and decoding. The impact of the channel memory and the modulation order on the performance gain is emphasized. In practice, we use low complexity linear filter-based equalization which can be efficiently implemented in the frequency domain. The use of iterative equalization and decoding is also considered. The performance gain in terms of frame error rate and data throughput is evaluated by numerical simulations.

  20. A Rank Aggregation Algorithm for Ensemble of Multiple Feature Selection Techniques in Credit Risk Evaluation

    Directory of Open Access Journals (Sweden)

    Shashi Dahiya

    2016-10-01

    Full Text Available In credit risk evaluation the accuracy of a classifier is very significant for classifying the high-risk loan applicants correctly. Feature selection is one way of improving the accuracy of a classifier. It provides the classifier with important and relevant features for model development. This study uses the ensemble of multiple feature ranking techniques for feature selection of credit data. It uses five individual rank based feature selection methods. It proposes a novel rank aggregation algorithm for combining the ranks of the individual feature selection methods of the ensemble. This algorithm uses the rank order along with the rank score of the features in the ranked list of each feature selection method for rank aggregation. The ensemble of multiple feature selection techniques uses the novel rank aggregation algorithm and selects the relevant features using the 80%, 60%, 40% and 20% thresholds from the top of the aggregated ranked list for building the C4.5, MLP, C4.5 based Bagging and MLP based Bagging models. It was observed that the performance of models using the ensemble of multiple feature selection techniques is better than the performance of 5 individual rank based feature selection methods. The average performance of all the models was observed as best for the ensemble of feature selection techniques at 60% threshold. Also, the bagging based models outperformed the individual models most significantly for the 60% threshold. This increase in performance is more significant from the fact that the number of features were reduced by 40% for building the highest performing models. This reduces the data dimensions and hence the overall data size phenomenally for model building. The use of the ensemble of feature selection techniques using the novel aggregation algorithm provided more accurate models which are simpler, faster and easy to interpret.

  1. New evaluation methods for conceptual design selection using computational intelligence techniques

    Energy Technology Data Exchange (ETDEWEB)

    Huang, Hong Zhong; Liu, Yu; Li, Yanfeng; Wang, Zhonglai [University of Electronic Science and Technology of China, Chengdu (China); Xue, Lihua [Higher Education Press, Beijing (China)

    2013-03-15

    The conceptual design selection, which aims at choosing the best or most desirable design scheme among several candidates for the subsequent detailed design stage, oftentimes requires a set of tools to conduct design evaluation. Using computational intelligence techniques, such as fuzzy logic, neural network, genetic algorithm, and physical programming, several design evaluation methods are put forth in this paper to realize the conceptual design selection under different scenarios. Depending on whether an evaluation criterion can be quantified or not, the linear physical programming (LPP) model and the RAOGA-based fuzzy neural network (FNN) model can be utilized to evaluate design alternatives in conceptual design stage. Furthermore, on the basis of Vanegas and Labib's work, a multi-level conceptual design evaluation model based on the new fuzzy weighted average (NFWA) and the fuzzy compromise decision-making method is developed to solve the design evaluation problem consisting of many hierarchical criteria. The effectiveness of the proposed methods is demonstrated via several illustrative examples.

  2. Selection of Instructional Methods and Techniques: The Basic Consideration of Teachers at Secondary School Level

    Science.gov (United States)

    Ahmad, Saira Ijaz; Malik, Samina; Irum, Jamila; Zahid, Rabia

    2011-01-01

    The main objective of the study was to identify the instructional methods and techniques used by the secondary school teachers to transfer the instructions to the students and to explore the basic considerations of the teachers about the selection of these instructional methods and techniques. Participants of the study included were 442 teachers…

  3. Efficient Structure-Aware Selection Techniques for 3D Point Cloud Visualizations with 2DOF Input

    NARCIS (Netherlands)

    Yu, Lingyun; Efstathiou, Konstantinos; Isenberg, Petra; Isenberg, Tobias

    2012-01-01

    Data selection is a fundamental task in visualization because it serves as a pre-requisite to many follow-up interactions. Efficient spatial selection in 3D point cloud datasets consisting of thousands or millions of particles can be particularly challenging. We present two new techniques, TeddySele

  4. Efficient Structure-Aware Selection Techniques for 3D Point Cloud Visualizations with 2DOF Input

    NARCIS (Netherlands)

    Yu, Lingyun; Efstathiou, Konstantinos; Isenberg, Petra; Isenberg, Tobias

    2012-01-01

    Data selection is a fundamental task in visualization because it serves as a pre-requisite to many follow-up interactions. Efficient spatial selection in 3D point cloud datasets consisting of thousands or millions of particles can be particularly challenging. We present two new techniques,

  5. Technical Description of the Use of Selective Perfusion Techniques During the Norwood Procedure for Hypoplastic Left Heart Syndrome

    Science.gov (United States)

    Chabot, David Leonard; Polimenakos, Anastasios C.

    2011-01-01

    Abstract: Since the introduction of the Norwood procedure for surgical palliation of hypoplastic left heart syndrome in 1983, refinements have been made to the original procedure to improve patient outcomes while still accomplishing the original goals of the procedure. One of these refinements has been the introduction of regional selective perfusion to limit the duration of circulatory arrest times and optimize the regional flow distribution. In this paper we describe our technique for performing selective cerebral and lower body perfusion during the Norwood procedure. PMID:22416608

  6. Application of data mining techniques to a selected business organization with special reference to buying behavior

    Directory of Open Access Journals (Sweden)

    Tejaswini Abhijit Hilage

    2011-12-01

    Full Text Available Data mining is a new concept & an exploration and analysis of large data sets, in order to discover meaningful patterns and rules. Many organizations are now using the data mining techniques to find outmeaningful patterns from the database. The present paper studies how data mining techniques can be apply to the large database. These data mining techniques give certain behavioral pattern from the database. The results which come after analysis of the database are useful for organization. This paper examines theresult after applying association rule mining technique, rule induction technique and Apriori algorithm. These techniques are applied to the database of shopping mall. Market basket analysis is performing by the above mentioned techniques and some important results are found such as buying behavior.

  7. Application of Data Mining Techniques to a Selected Business Organisation with Special Reference to Buying Behaviour

    CERN Document Server

    Hilage, Tejaswini

    2011-01-01

    Data mining is a new concept & an exploration and analysis of large data sets, in order to discover meaningful patterns and rules. Many organizations are now using the data mining techniques to find out meaningful patterns from the database. The present paper studies how data mining techniques can be apply to the large database. These data mining techniques give certain behavioral pattern from the database. The results which come after analysis of the database are useful for organization. This paper examines the result after applying association rule mining technique, rule induction technique and Apriori algorithm. These techniques are applied to the database of shopping mall. Market basket analysis is performing by the above mentioned techniques and some important results are found such as buying behavior.

  8. Selected applications of photothermal and photoluminescence heterodyne techniques for process control in silicon wafer manufacturing

    Science.gov (United States)

    Ehlert, Andreas; Kerstan, Michael; Lundt, Holger; Huber, Anton; Helmreich, Dieter; Geiler, Hans-Dieter; Karge, Harald; Wagner, Matthias

    1997-02-01

    Two noncontact laser-based heterodyne techniques, photothermal heterodyne (PTH) and photoluminescence heterodyne (PLH), are introduced and applied to processing and quality control in silicon wafer manufacturing. The crystallographic characteristics of process-induced defects in silicon wafers are suitable for the application of PTH and PLH techniques, which are demonstrated on selected examples from different steps of silicon wafer production. Both PLH and PTH techniques meet the demand for nondestructive and on-line-suitable measurement in the semiconductor industry.

  9. The influence of elements of synchronized swimming on technique of the selected swimming strokes

    OpenAIRE

    Široký, Michal

    2015-01-01

    Title: The influence of elements of synchronized swimming on technique of the selected swimming strokes Objectives: The objective of the thesis is to assess the effect of the elements of synchronized swimming at improving the techniques of swimming. Methods: The results were detected by overt observation with active participation and subsequent scaling on the ordinal scale 1 to 5. Results: The results show that the influence of the elements of synchronized swimming on improving the technique ...

  10. Selective Enrichment of a Methanol-Utilizing Consortium Using Pulp and Paper Mill Waste Streams

    Science.gov (United States)

    Mockos, Gregory R.; Smith, William A.; Loge, Frank J.; Thompson, David N.

    Efficient utilization of carbon inputs is critical to the economic viability of the current forest products sector. Input carbon losses occur in various locations within a pulp mill, including losses as volatile organics and wastewater. Opportunities exist to capture this carbon in the form of value-added products such as biodegradable polymers. Wasteactivated sludge from a pulp mill wastewater facility was enriched for 80 days for a methanol-utilizing consortium with the goal of using this consortium to produce biopolymers from methanol-rich pulp mill waste streams. Five enrichment conditions were utilized: three high-methanol streams from the kraft mill foul condensate system, one methanol-amended stream from the mill wastewater plant, and one methanol-only enrichment. Enrichment reactors were operated aerobically in sequencing batch mode at neutral pH and 25°C with a hydraulic residence time and a solids retention time of 4 days. Non-enriched waste activated sludge did not consume methanol or reduce chemical oxygen demand. With enrichment, however, the chemical oxygen demand reduction over 24-h feed/ decant cycles ranged from 79 to 89%, and methanol concentrations dropped below method detection limits. Neither the non-enriched waste-activated sludge nor any of the enrichment cultures accumulated polyhydroxyalkanoates (PHAs) under conditions of nitrogen sufficiency. Similarly, the non-enriched waste activated sludge did not accumulate PHAs under nitrogen-limited conditions. By contrast, enriched cultures accumulated PHAs to nearly 14% on a dry weight basis under nitrogen-limited conditions. This indicates that selectively enriched pulp mill waste activated sludge can serve as an inoculum for PHA production from methanol-rich pulp mill effluents.

  11. Selective enrichment of a methanol-utilizing consortium using pulp and paper mill waste streams.

    Science.gov (United States)

    Mockos, Gregory R; Smith, William A; Loge, Frank J; Thompson, David N

    2008-03-01

    Efficient utilization of carbon inputs is critical to the economic viability of the current forest products sector. Input carbon losses occur in various locations within a pulp mill, including losses as volatile organics and wastewater. Opportunities exist to capture this carbon in the form of value-added products such as biodegradable polymers. Waste-activated sludge from a pulp mill wastewater facility was enriched for 80 days for a methanol-utilizing consortium with the goal of using this consortium to produce biopolymers from methanol-rich pulp mill waste streams. Five enrichment conditions were utilized: three high-methanol streams from the kraft mill foul condensate system, one methanol-amended stream from the mill wastewater plant, and one methanol-only enrichment. Enrichment reactors were operated aerobically in sequencing batch mode at neutral pH and 25 degrees C with a hydraulic residence time and a solids retention time of 4 days. Non-enriched waste activated sludge did not consume methanol or reduce chemical oxygen demand. With enrichment, however, the chemical oxygen demand reduction over 24-h feed/decant cycles ranged from 79 to 89%, and methanol concentrations dropped below method detection limits. Neither the non-enriched waste-activated sludge nor any of the enrichment cultures accumulated polyhydroxyalkanoates (PHAs) under conditions of nitrogen sufficiency. Similarly, the non-enriched waste activated sludge did not accumulate PHAs under nitrogen-limited conditions. By contrast, enriched cultures accumulated PHAs to nearly 14% on a dry weight basis under nitrogen-limited conditions. This indicates that selectively enriched pulp mill waste activated sludge can serve as an inoculum for PHA production from methanol-rich pulp mill effluents.

  12. Selective enrichment of a methanol-utilizing consortium using pulp & paper mill waste streams

    Energy Technology Data Exchange (ETDEWEB)

    Gregory R. Mockos; William A. Smith; Frank J. Loge; David N. Thompson

    2007-04-01

    Efficient utilization of carbon inputs is critical to the economic viability of the current forest products sector. Input carbon losses occur in various locations within a pulp mill, including losses as volatile organics and wastewater . Opportunities exist to capture this carbon in the form of value-added products such as biodegradable polymers. Waste activated sludge from a pulp mill wastewater facility was enriched for 80 days for a methanol-utilizing consortium with the goal of using this consortium to produce biopolymers from methanol-rich pulp mill waste streams. Five enrichment conditions were utilized: three high-methanol streams from the kraft mill foul condensate system, one methanol-amended stream from the mill wastewater plant, and one methanol-only enrichment. Enrichment reactors were operated aerobically in sequencing batch mode at neutral pH and 25°C with a hydraulic residence time and a solids retention time of four days. Non-enriched waste activated sludge did not consume methanol or reduce chemical oxygen demand. With enrichment, however, the chemical oxygen demand reduction over 24 hour feed/decant cycles ranged from 79 to 89 %, and methanol concentrations dropped below method detection limits. Neither the non-enriched waste activated sludge nor any of the enrichment cultures accumulated polyhydroxyalkanoates (PHAs) under conditions of nitrogen sufficiency. Similarly, the non-enriched waste activated sludge did not accumulate PHAs under nitrogen limited conditions. By contrast, enriched cultures accumulated PHAs to nearly 14% on a dry weight basis under nitrogen limited conditions. This indicates that selectively-enriched pulp mill waste activated sludge can serve as an inoculum for PHA production from methanol-rich pulp mill effluents.

  13. Photovoltaic-wind hybrid systems for remote power supply. Workshop. [Selected Papers

    Energy Technology Data Exchange (ETDEWEB)

    Huacuz, J. M.; Urrutia, M. [eds.] [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1997-12-31

    This document include the papers of the RIER Workshop that was hold in Cancun, Mexico, on 21-25 April 1997. This Workshop was organized by the Non-Conventional Energy Unit of the Electrical Research Institute of Mexico (IIE), with the financial contributions from the Mexican National Council for Science and Technology (CONACYT) and the Iberoamerican Network for Rural Electrification with Renewable Energy (RIER) of the Program Science and Technology for Development (CYTED). The purpose of this Workshop was to present works developed on the technology of Photovoltaic-Wind Hybrid Systems, and to discuss both technical and non-technical factors that could foster or inhibit the widespread application this technology [Espanol] Este documento incluye los articulos tecnicos del taller de trabajo RIER, realizado en Cancun, Mexico, del 21 al 25 de abril de 1997. Este taller de trabajo fue organizado por el Instituto de Investigaciones Electricas (IIE), con la contribucion financiera del Consejo Nacional de Ciencia y Tecnologia (CONACYT) y de la Red de Trabajo Iberoamericana para la Electrificacion Rural con Energia Renovable (RIER) del programa Ciencia y Tecnologia para el Desarrollo (CYTED). El proposito de este taller fue presentar trabajos desarrollados sobre la tecnologia de sistemas hibridos fotovoltaicos y de viento, y discutir los factores tecnicos y no tecnicos que pudieran fomentar o detener la amplia aplicacion de esta tecnologia

  14. Fabrication techniques for microfluidic paper-based analytical devices and their applications for biological testing: A review.

    Science.gov (United States)

    Xia, Yanyan; Si, Jin; Li, Zhiyang

    2016-03-15

    Paper is increasingly recognized as a user-friendly and ubiquitous substrate for construction of microfluidic devices. Microfluidic paper-based analytical devices (μPADs) provide an alternative technology for development of affordable, portable, disposable and low-cost diagnostic tools for improving point of care testing (POCT) and disease screening in the developing world, especially in those countries with no- or low-infrastructure and limited trained medical and health professionals. We in this review present fabrication techniques for microfluidic devices and their respective applications for biological detection as reported to date. These include: (i) fabrication techniques: examples of devices fabricated by using two-dimensional (2D) and three-dimensional (3D) methods; (ii) detection application: biochemical, immunological and molecular detection by incorporating efficient detection methods such as, colorimetric detection, electrochemical detection, fluorescence detection, chemiluminescence (CL) detection, electrochemiluninescence (ECL) detection, photoelectrochemi (PEC) detection and so on. In addition, main advantages, disadvantages and future trends for the devices are also discussed in this review.

  15. EDITORIAL: Special section: Selected papers from the Third European Workshop on Monte Carlo Treatment Planning (MCTP2012) Special section: Selected papers from the Third European Workshop on Monte Carlo Treatment Planning (MCTP2012)

    Science.gov (United States)

    Spezi, Emiliano; Leal, Antonio

    2013-04-01

    Fourth International Workshop on Recent Advances in Monte Carlo Techniques for Radiation Therapy Phys. Med. Biol. 57 (11) E01 Spezi E 2010 Special section: Selected papers from the Second European Workshop on Monte Carlo Treatment Planning (MCTP2009) Phys. Med. Biol. 55 (16) E01 Wagner A, Crop F, Lacornerie T, Vandevelde F and Reynaert N 2013 Use of a liquid ionization chamber for stereotactic radiotherapy dosimetry Phys. Med. Biol. 58 2445-59

  16. Reducing wrong patient selection errors: exploring the design space of user interface techniques.

    Science.gov (United States)

    Sopan, Awalin; Plaisant, Catherine; Powsner, Seth; Shneiderman, Ben

    2014-01-01

    Wrong patient selection errors are a major issue for patient safety; from ordering medication to performing surgery, the stakes are high. Widespread adoption of Electronic Health Record (EHR) and Computerized Provider Order Entry (CPOE) systems makes patient selection using a computer screen a frequent task for clinicians. Careful design of the user interface can help mitigate the problem by helping providers recall their patients' identities, accurately select their names, and spot errors before orders are submitted. We propose a catalog of twenty seven distinct user interface techniques, organized according to a task analysis. An associated video demonstrates eighteen of those techniques. EHR designers who consider a wider range of human-computer interaction techniques could reduce selection errors, but verification of efficacy is still needed.

  17. EDITORIAL: Selected papers from the 20th Micromechanics Europe Workshop (MME 09) (Toulouse, France, 20-22 September 2009) Selected papers from the 20th Micromechanics Europe Workshop (MME 09) (Toulouse, France, 20-22 September 2009)

    Science.gov (United States)

    Pons, Patrick

    2010-06-01

    This special section of the Journal of Micromechanics and Microengineering is devoted to the 20th European Workshop on Micromechanics (MME 2009), which was held in Toulouse, France, 20-22 September 2009. The MME workshop series started in 1989 in Twente and was the first European event created in the field of micro machining technology for developing micro components, micro sensors, micro actuators, and micro systems. Over the last two decades the MEMS community has grown considerably, and the MME workshops have sustained this progress through annual meetings all around Europe: Twente (The Netherlands, 1989), Berlin (Germany, 1990), Leuven (Belgium, 1992), Neuchatel (Switzerland, 1993), Pisa (Italy, 1994), Copenhagen (Denmark, 1995), Barcelona (Spain, 1996), Southampton (United Kingdom, 1997), Ulvik (Norway, 1998), Gif-sur-Yvette (France, 1999), Uppsala (Sweden, 2000), Cork (Ireland, 2001), Sinaia (Romania, 2002), Delft (The Netherlands, 2003), Leuven (Belgium, 2004), Goteborg (Sweden, 2005), Southampton (United Kingdom, 2006), Guimaraes (Portugal, 2007) and Aachen (Germany, 2008). For twenty years, MME conferences have provided an excellent opportunity to bring together many, predominantly European, scientists and engineers to present and discuss the latest developments in this field. For the 20th anniversary of the MicroMechanics Europe Workshop, 115 papers from 23 countries were submitted. Selected contributions were presented during four poster sessions, including short oral presentations. A very interesting feature of the MME workshops is their ability to promote young researchers. Six invited speakers from research centres and industry also gave an overview on advanced technological, characterization and simulation tools. The two day workshop was attended by 185 delegates from 22 countries all over Europe, and from Japan, Taiwan, USA and Mexico. On behalf of the MME 2009 Program Committee, I would like to express my sincere gratitude to all authors of

  18. Selected papers from the Fourth Annual q-bio Conference on Cellular Information Processing.

    Science.gov (United States)

    Nemenman, Ilya; Faeder, James R; Hlavacek, William S; Jiang, Yi; Wall, Michael E; Zilman, Anton

    2011-10-01

    This special issue consists of 11 original papers that elaborate on work presented at the Fourth Annual q-bio Conference on Cellular Information Processing, which was held on the campus of St John's College in Santa Fe, New Mexico, USA, 11-14 August 2010. Now in its fourth year, the q-bio conference has changed considerably over time. It is now well established and a major event in systems biology. The 2010 conference saw attendees from all continents (except Antarctica!) sharing novel results and participating in lively discussions at both the oral and poster sessions. The conference was oversubscribed and grew to 27 contributed talks, 16 poster spotlights and 137 contributed posters. We deliberately decreased the number of invited speakers to 21 to leave more space for contributed presentations, and the attendee feedback confirmed that the choice was a success. Although the q-bio conference has grown and matured, it has remained true to the original goal of being an intimate and dynamic event that brings together modeling, theory and quantitative experimentation for the study of cell regulation and information processing. Funded in part by a grant from NIGMS and by DOE funds through the Los Alamos National Laboratory Directed Research and Development program, the conference has continued to exhibit youth and vigor by attracting (and partially supporting) over 100 undergraduate, graduate and postdoctoral researchers. The associated q-bio summer school, which precedes the conference each year, further emphasizes the development of junior scientists and makes q-bio a singular event in its impact on the future of quantitative biology. In addition to an increased international presence, the conference has notably diversified its demographic representation within the USA, including increased participation from the southeastern corner of the country. One big change in the conference this year is our new publication partner, Physical Biology. Although we are very

  19. Review of Romance Languages and Linguistic Theory 2011. Selected Papers from ‘Going Romance’ Utrecht 2011

    Directory of Open Access Journals (Sweden)

    Madalena Colaço

    2016-01-01

    Full Text Available The present volume contains a selection of twelve peer-reviewed papers presented at 'Going Romance' in 2011. Celebrating its 25th edition, the conference took place on December 8-10, in Utrecht, Holland, where the event was first held in 1986. While keeping the focus on the formal study of the Romance languages, the articles represent a wide range of topics related to different research areas, such as phonology, morphology, syntax, semantics and language acquisition. The papers are arranged in alphabetical order by author.

  20. A time-selective technique for free-field reciprocity calibration of condenser microphones

    DEFF Research Database (Denmark)

    Barrera Figueroa, Salvador; Rasmussen, Knud; Jacobsen, Finn

    2003-01-01

    of the diffraction of the body of the microphone, and thus, its sensitivity will change. In the two cases, a technique based on the reciprocity theorem can be applied for obtaining the absolute sensitivity either under uniform pressure or free-field conditions. In this paper, signal-processing techniques...

  1. Biomechanical and energetic determinants of technique selection in classical cross-country skiing.

    Science.gov (United States)

    Pellegrini, Barbara; Zoppirolli, Chiara; Bortolan, Lorenzo; Holmberg, Hans-Christer; Zamparo, Paola; Schena, Federico

    2013-12-01

    Classical cross-country skiing can be performed using three main techniques: diagonal stride (DS), double poling (DP), and double poling with kick (DK). Similar to other forms of human and animal gait, it is currently unclear whether technique selection occurs to minimize metabolic cost or to keep some mechanical factors below a given threshold. The aim of this study was to find the determinants of technique selection. Ten male athletes roller skied on a treadmill at different slopes (from 0° to 7° at 10km/h) and speeds (from 6 to 18km/h at 2°). The technique preferred by skiers was gathered for every proposed condition. Biomechanical parameters and metabolic cost were then measured for each condition and technique. Skiers preferred DP for skiing on the flat and they transitioned to DK and then to DS with increasing slope steepness, when increasing speed all skiers preferred DP. Data suggested that selections mainly occur to remain below a threshold of poling force. Second, critically low values of leg thrust time may limit the use of leg-based techniques at high speeds. A small role has been identified for the metabolic cost of locomotion, which determined the selection of DP for flat skiing.

  2. Review on Feature Selection Techniques and the Impact of SVM for Cancer Classification using Gene Expression Profile

    CERN Document Server

    George, G Victo Sudha; 10.5121/ijcses.2011.2302

    2011-01-01

    The DNA microarray technology has modernized the approach of biology research in such a way that scientists can now measure the expression levels of thousands of genes simultaneously in a single experiment. Gene expression profiles, which represent the state of a cell at a molecular level, have great potential as a medical diagnosis tool. But compared to the number of genes involved, available training data sets generally have a fairly small sample size for classification. These training data limitations constitute a challenge to certain classification methodologies. Feature selection techniques can be used to extract the marker genes which influence the classification accuracy effectively by eliminating the un wanted noisy and redundant genes This paper presents a review of feature selection techniques that have been employed in micro array data based cancer classification and also the predominant role of SVM for cancer classification.

  3. Cloud Package Selection for Academic Requirements using Multi Criteria Decision Making based Modified Ant Colony Optimization Technique

    Directory of Open Access Journals (Sweden)

    C.Madhumathi

    2016-04-01

    Full Text Available Quality of Service (QoS and user satisfaction are two of the major requirements considered by the current cloud service providers. In-order to incorporate these qualities in the cloud resource selection framework, user’s requirements must be clearly known. This paper presents an effective cloud package allocation technique that utilizes the user’s logs and fuzzy user inputs to identify the user requirements to perform optimal allocations. Since cloud packages are predefined and do not correspond to the direct user requirements, optimal package allocation is the only option. This process is carried out by Ant Colony Optimization (ACO. Due to the metaheuristic nature of ACO, the results obtained from this selection technique was found to be optimal and the results were obtained faster even with the usage of a large number of agents (ants. Experiments show that ACO provides optimal and fast allocations.

  4. Integrated ion imprinted polymers-paper composites for selective and sensitive detection of Cd(II) ions

    Energy Technology Data Exchange (ETDEWEB)

    Huang, Kai [State Key Laboratory of Environment Health - Incubation, Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health Wuhan, Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Hubei, 430030, Wuhan (China); Chen, Ying [Hubei Center for Disease Control and Prevention, No. 6 ZhuoDao Quan North Road, 430079, Wuhan (China); Zhou, Feng [State Key Laboratory of Environment Health - Incubation, Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health Wuhan, Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Hubei, 430030, Wuhan (China); Zhao, Xiaoya [Hubei Entry-Exit Inspection and Quarantine Bureau of PRC, No.588 Qingtaidadao Road, Hubei, 430022, Wuhan (China); Liu, Jiafa [Hubei Center for Disease Control and Prevention, No. 6 ZhuoDao Quan North Road, 430079, Wuhan (China); Mei, Surong; Zhou, Yikai [State Key Laboratory of Environment Health - Incubation, Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health Wuhan, Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Hubei, 430030, Wuhan (China); Jing, Tao, E-mail: jingtao@hust.edu.cn [State Key Laboratory of Environment Health - Incubation, Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health Wuhan, Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Hubei, 430030, Wuhan (China)

    2017-07-05

    Highlights: • IIPs are first grafted on the low-cost A4 print paper to develop an integrated paper-based device. • As an imprinted composite, the adsorption capacity is 155.2 mg g{sup –1} and the imprinted factor is more than 3.0. • As an analytical method, the limit of detection is 0.4 ng mL{sup –1}. • Based on the water quality standards, it could be used to determine Cd(II) ions in drinking water. - Abstract: Paper-based sensor is a new alternative technology to develop a portable, low-cost, and rapid analysis system in environmental chemistry. In this study, ion imprinted polymers (IIPs) using cadmium ions as the template were directly grafted on the surface of low-cost print paper based on the reversible addition-fragmentation chain transfer polymerization. It can be applied as a recognition element to selectively capture the target ions in the complex samples. The maximum adsorption capacity of IIPs composites was 155.2 mg g{sup –1} and the imprinted factor was more than 3.0. Then, IIPs-paper platform could be also applied as a detection element for highly selective and sensitive detection of Cd(II) ions without complex sample pretreatment and expensive instrument, due to the selective recognition, formation of dithizone-cadmium complexes and light transmission ability. Under the optimized condition, the linear range was changed from 1 to 100 ng mL{sup –1} and the limit of detection was 0.4 ng mL{sup –1}. The results were in good agreement with the classic ICP-MS method. Furthermore, the proposed method can also be developed for detection of other heavy metals by designing of new IIPs.

  5. Concomitant production of xylanases and cellulases from Trichoderma longibrachiatum MDU-6 selected for the deinking of paper waste.

    Science.gov (United States)

    Chutani, Preeti; Sharma, Krishna Kant

    2016-05-01

    Sixty fungal cultures were isolated from agricultural soil, industrial soil, forest canopy soil having decomposed leaf litter and compost samples collected from different regions of India. Fifteen fungal cultures were selected qualitatively for the production of xylanase and cellulases and were identified employing ITS, NS and MNS primers. The enzyme cocktail consisting of 3811 IU g(-1) of xylanase and 9.9 IU g(-1) of cellulase from Trichoderma longibrachiatum MDU-6 was selected quantitatively for the deinking of diverse paper wastes. The enzyme production increased two fold when produced at tray level in comparison with flasks. The enzyme cocktail was effective in the deinking of old newspaper samples with significant removal of chromophores, phenolics and hydrophobic compounds and less sugar loss. While in case of examination papers and laser printed papers, ink removal was not very significant. Moreover, the sugar loss was significantly high in case of examination papers. The deinking results were further confirmed with FTIR analysis. Deinked newspaper pulp sample shows brightness of 52%, which was 9.6% high than its control sample. The ERIC value for deinked newspaper pulp was found to be 655.9 ppm. Thereafter, the deinked newspaper pulp was examined under light microscope after differential staining with safranin and malachite green and also examined under scanning and transmission electron microscope, which revealed fibrillation and perforation.

  6. Select Papers. Volume 1

    Science.gov (United States)

    2011-08-01

    non- uniform rational B-splines (NURBS), 127 and BRL-CAD TM format. This dual-package development allowed for rapid development of components ...next generation of scientists and engineers. A fundamental component of our outreach program is to provide students research experiences at ARL...summer intern. There, I ran Volume Based Morphometry , an application of Statistical Parametric Mapping that was new to the Hirsch lab. I

  7. Abstracts of Selected Papers

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    Review and Prospect of the Reform of Real Estate Taxes LIU Zuo (Taxation Science Research Institute, State Administration of Taxation, 100038) The reform of real estate taxes of China began from 1986, when real estates of domestic enterprises and Chinese citizens were gradually levied. With hardship and great progress, unified tax of domestic and foreign real estate had been realized during the llth Five-year Plan (2006-- 2010). The reform of the real estate taxes in the 12th Five-year Plan (2006--2010) mainly includes the simplification of tax system, rational adiustment of tax base and tax rate, as well as appropriate decentralization of tax authority. It still had a long way ahead. Keywords. Real Estate Tax, Reform of Real Estate Tax, Sound Tax System

  8. Abstracts of Selected Papers

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    Four Transformations of China Tax Development,Fiscal Policy to Promote Low Carbon Economic Development in China,Establishment and Development of Green Financial System of China,China's Trading Relations with Major Emerging Countries: Analysis Based on Trade Competitiveness and Trade Complementarity

  9. Jan Tinbergen - Selected Papers

    NARCIS (Netherlands)

    J. Tinbergen (Jan); L.H. Klaassen (Leo); L.M. Koyck; H.J. Witteveen

    1959-01-01

    textabstractEdited by L.H. Klaassen, L.M. Koyck and H.J. Witteveen, Presented on the occasion of his 25 years jubilee as a professor at the Netherlands School of Economics at Rotterdam. (With a bibliography of professor Tinbergen's work).

  10. Abstracts of Selected Papers

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    The Summary of Husheng's Study of the History of New Democratic Revolution ,The Summary of Our Country's Food Safety Supervision Research ,Research on the Distribution of Humanities and Social Sciences Academic Productivity during the 11 th five -year plan—— based on Statistical Analysis of National Social Science Foundation of China

  11. Abstracts of Selected Papers

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    Requirement and Orientation Philosophy and of the Innovation of China's Social Sciences He Peiyu, Huang Hai The national 12th fiveyear plan addresses that "we will develop philosophy and social sciences, promoting innovation in academic disciplines, academic viewpoints and research methods, and promoting innovation system construction of philosophy and social sciences, carrying out The Innovation of Philoso- phy and Social Science Engineering, blooming and developing philosophy and social sciences". Our country sets The Innovation of Philosophy and Social Science Engineering for the first time and makes it rise to the national strategic level. This is not only the mission entrusted by the times to people working in the fields of philosophy and social sciences but also the objective requirement of social development. Nowadays,

  12. Abstracts of Selected Papers

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    The Exploration of Philosophy Social Science Innovation Project in the Social Science Evaluation and Incentive Mechanism;The Validity Study on Assessment of Chinese Universities' Scientific Research Ability by Index-h;A Quantitative Analysis on the Ratios of NSTA Winners to Candidates for CAS & CAE

  13. Volume I: Select Papers

    Science.gov (United States)

    2010-08-01

    Single word terminology is much more difficult to access based on the occurrences of homographs . In the NVTC’s dictionary for example, the entry...These unigrams must be verfied with a human ground truth because of the appearance of homographs , as mentioned earlier. The third proposed method

  14. Abstracts of Selected Papers

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    The study design in social science research;Information Asymmetry in Research and Role of Research Management: Problems and Suggestions;Research on Innovation of Social Science Research Institutions' Knowledge Management Systems under Network Environment;The National Social Science Foundation Project in Academy of Social Science System Statistical Analysis in recent 10 years;

  15. Abstracts of Selected Papers

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    The Research Management Methodology in National Survey Chen Chen On the cognition of the national conditions of China, the understanding of Marx doctrine and Chinese reality, both an academic problem, also be a practice problem. Investigation and study is the scientific world outlook and the scientific methodology. National survey is researching on the national conditions,

  16. Effects of implant angulation, material selection, and impression technique on impression accuracy: a preliminary laboratory study.

    Science.gov (United States)

    Rutkunas, Vygandas; Sveikata, Kestutis; Savickas, Raimondas

    2012-01-01

    The aim of this preliminary laboratory study was to evaluate the effects of 5- and 25-degree implant angulations in simulated clinical casts on an impression's accuracy when using different impression materials and tray selections. A convenience sample of each implant angulation group was selected for both open and closed trays in combination with one polyether and two polyvinyl siloxane impression materials. The influence of material and technique appeared to be significant for both 5- and 25-degree angulations (P impression accuracy. The open-tray technique was more accurate with highly nonaxially oriented implants for the small sample size investigated.

  17. Case selection criteria and a simplified technique for placing and finishing direct composite veneers.

    Science.gov (United States)

    Blank, Jeff T

    2002-09-01

    This article addresses the key obstacles clinicians face when considering direct composite veneers as a treatment option for the cosmetic correction of anterior teeth. These obstacles include case selection, material selection, the best technique to allow the expeditious placement of the veneers, and, ultimately, final esthetics. The best clinical situations for choosing direct composite veneers are identified, and a new microhybrid composite resin system, Esthet-X, which offers a simplified solution to shade matching and polishing, is introduced. A clinical case demonstrates a simplified technique for the placement of stratified, polychromatic direct veneers, and describes a new polishing system that generates a microfill type of shine with modern microhybrids.

  18. Integrated DFB-DBR laser modulator grown by selective area metalorganic vapor phase epitaxy growth technique

    Science.gov (United States)

    Tanbun-Ek, T.; Chen, Y. K.; Grenko, J. A.; Byrne, E. K.; Johnson, J. E.; Logan, R. A.; Tate, A.; Sergent, A. M.; Wecht, K. W.; Sciortine, P. F.; Chu, S. N. G.

    1994-12-01

    A device quality of selective epitaxy growth of InGaAsP/InP multiple quantum well (MQW) structure using low-pressure metalorganic vapor phase epitaxy (MOVPE) technique is described. The technique is applied to a monolithically integrated electroabsorption modulator with distributed feedback (DFB) and distributed Bragg reflector (DBR) lasers. Superior device characteristics such as efficient modulation, low threshold current and high efficiency operation of the integrated devices are obtained.

  19. Numerical analysis of radiation propagation in innovative volumetric receivers based on selective laser melting techniques

    Science.gov (United States)

    Alberti, Fabrizio; Santiago, Sergio; Roccabruna, Mattia; Luque, Salvador; Gonzalez-Aguilar, Jose; Crema, Luigi; Romero, Manuel

    2016-05-01

    Volumetric absorbers constitute one of the key elements in order to achieve high thermal conversion efficiencies in concentrating solar power plants. Regardless of the working fluid or thermodynamic cycle employed, design trends towards higher absorber output temperatures are widespread, which lead to the general need of components of high solar absorptance, high conduction within the receiver material, high internal convection, low radiative and convective heat losses and high mechanical durability. In this context, the use of advanced manufacturing techniques, such as selective laser melting, has allowed for the fabrication of intricate geometries that are capable of fulfilling the previous requirements. This paper presents a parametric design and analysis of the optical performance of volumetric absorbers of variable porosity conducted by means of detailed numerical ray tracing simulations. Sections of variable macroscopic porosity along the absorber depth were constructed by the fractal growth of single-cell structures. Measures of performance analyzed include optical reflection losses from the absorber front and rear faces, penetration of radiation inside the absorber volume, and radiation absorption as a function of absorber depth. The effects of engineering design parameters such as absorber length and wall thickness, material reflectance and porosity distribution on the optical performance of absorbers are discussed, and general design guidelines are given.

  20. Sample size estimation and sampling techniques for selecting a representative sample

    OpenAIRE

    Aamir Omair

    2014-01-01

    Introduction: The purpose of this article is to provide a general understanding of the concepts of sampling as applied to health-related research. Sample Size Estimation: It is important to select a representative sample in quantitative research in order to be able to generalize the results to the target population. The sample should be of the required sample size and must be selected using an appropriate probability sampling technique. There are many hidden biases which can adversely affect ...

  1. EDITORIAL: Special section: Selected papers from the Second European Workshop on Monte Carlo Treatment Planning (MCTP2009) Special section: Selected papers from the Second European Workshop on Monte Carlo Treatment Planning (MCTP2009)

    Science.gov (United States)

    Spezi, Emiliano

    2010-08-01

    Sixty years after the paper 'The Monte Carlo method' by N Metropolis and S Ulam in The Journal of the American Statistical Association (Metropolis and Ulam 1949), use of the most accurate algorithm for computer modelling of radiotherapy linear accelerators, radiation detectors and three dimensional patient dose was discussed in Wales (UK). The Second European Workshop on Monte Carlo Treatment Planning (MCTP2009) was held at the National Museum of Wales in Cardiff. The event, organized by Velindre NHS Trust, Cardiff University and Cancer Research Wales, lasted two and a half days, during which leading experts and contributing authors presented and discussed the latest advances in the field of Monte Carlo treatment planning (MCTP). MCTP2009 was highly successful, judging from the number of participants which was in excess of 140. Of the attendees, 24% came from the UK, 46% from the rest of Europe, 12% from North America and 18% from the rest of the World. Fifty-three oral presentations and 24 posters were delivered in a total of 12 scientific sessions. MCTP2009 follows the success of previous similar initiatives (Verhaegen and Seuntjens 2005, Reynaert 2007, Verhaegen and Seuntjens 2008), and confirms the high level of interest in Monte Carlo technology for radiotherapy treatment planning. The 13 articles selected for this special section (following Physics in Medicine and Biology's usual rigorous peer-review procedure) give a good picture of the high quality of the work presented at MCTP2009. The book of abstracts can be downloaded from http://www.mctp2009.org. I wish to thank the IOP Medical Physics and Computational Physics Groups for their financial support, Elekta Ltd and Dosisoft for sponsoring MCTP2009, and leading manufacturers such as BrainLab, Nucletron and Varian for showcasing their latest MC-based radiotherapy solutions during a dedicated technical session. I am also very grateful to the eight invited speakers who kindly accepted to give keynote

  2. PREFACE: Special section featuring selected papers from the 3rd International Workshop on Numerical Modelling of High Temperature Superconductors Special section featuring selected papers from the 3rd International Workshop on Numerical Modelling of High Temperature Superconductors

    Science.gov (United States)

    Granados, Xavier; Sánchez, Àlvar; López-López, Josep

    2012-10-01

    The development of superconducting applications and superconducting engineering requires the support of consistent tools which can provide models for obtaining a good understanding of the behaviour of the systems and predict novel features. These models aim to compute the behaviour of the superconducting systems, design superconducting devices and systems, and understand and test the behavior of the superconducting parts. 50 years ago, in 1962, Charles Bean provided the superconducting community with a model efficient enough to allow the computation of the response of a superconductor to external magnetic fields and currents flowing through in an understandable way: the so called critical-state model. Since then, in addition to the pioneering critical-state approach, other tools have been devised for designing operative superconducting systems, allowing integration of the superconducting design in nearly standard electromagnetic computer-aided design systems by modelling the superconducting parts with consideration of time-dependent processes. In April 2012, Barcelona hosted the 3rd International Workshop on Numerical Modelling of High Temperature Superconductors (HTS), the third in a series of workshops started in Lausanne in 2010 and followed by Cambridge in 2011. The workshop reflected the state-of-the-art and the new initiatives of HTS modelling, considering mathematical, physical and technological aspects within a wide and interdisciplinary scope. Superconductor Science and Technology is now publishing a selection of papers from the workshop which have been selected for their high quality. The selection comprises seven papers covering mathematical, physical and technological topics which contribute to an improvement in the development of procedures, understanding of phenomena and development of applications. We hope that they provide a perspective on the relevance and growth that the modelling of HTS superconductors has achieved in the past 25 years.

  3. Bicoid Signal Extraction with a Selection of Parametric and Nonparametric Signal Processing Techniques

    Institute of Scientific and Technical Information of China (English)

    Zara Ghodsi; Emmanuel Sirimal Silva; Hossein Hassani

    2015-01-01

    The maternal segmentation coordinate gene bicoid plays a significant role during Drosophila embryogenesis. The gradient of Bicoid, the protein encoded by this gene, determines most aspects of head and thorax development. This paper seeks to explore the applicability of a variety of signal processing techniques at extracting bicoid expression signal, and whether these methods can outperform the current model. We evaluate the use of six different powerful and widely-used models representing both parametric and nonparametric signal processing techniques to determine the most efficient method for signal extraction in bicoid. The results are evaluated using both real and simulated data. Our findings show that the Singular Spectrum Analysis technique proposed in this paper outperforms the synthesis diffusion degradation model for filtering the noisy protein profile of bicoid whilst the exponential smoothing technique was found to be the next best alternative followed by the autoregressive integrated moving average.

  4. Bicoid signal extraction with a selection of parametric and nonparametric signal processing techniques.

    Science.gov (United States)

    Ghodsi, Zara; Silva, Emmanuel Sirimal; Hassani, Hossein

    2015-06-01

    The maternal segmentation coordinate gene bicoid plays a significant role during Drosophila embryogenesis. The gradient of Bicoid, the protein encoded by this gene, determines most aspects of head and thorax development. This paper seeks to explore the applicability of a variety of signal processing techniques at extracting bicoid expression signal, and whether these methods can outperform the current model. We evaluate the use of six different powerful and widely-used models representing both parametric and nonparametric signal processing techniques to determine the most efficient method for signal extraction in bicoid. The results are evaluated using both real and simulated data. Our findings show that the Singular Spectrum Analysis technique proposed in this paper outperforms the synthesis diffusion degradation model for filtering the noisy protein profile of bicoid whilst the exponential smoothing technique was found to be the next best alternative followed by the autoregressive integrated moving average.

  5. An Evaluation of Risk Factors and Preventive Techniques for Decubitus Ulcers in Selected Nigeria Hospitals

    Directory of Open Access Journals (Sweden)

    Onigbinde A. Teslim

    2012-08-01

    Full Text Available AIM: The aim of this study was to determine if in-patients in some selected Nigeria hospitals are at risk of developing pressure sore and to determine the preventive techniques adopted by Health Care Professionals. METHOD: A questionnaire was used for this study and it was divided into two parts. The part A is a structured questionnaire that took care of socio-demographic data and preventive techniques while part B is the Braden Scale which was used to assess the risk of developing pressure ulcer. Three hundred and eighteen (318 In-patients in five Nigeria purposively selected hospitals in southwest Nigeria volunteered to participate in this study. The statistical method that was employed was descriptive statistics. RESULTS: The result of the study showed that In-patients in the selected hospitals are “at risk” of developing pressure ulcers. Also, General Practitioners (50.47% and nursing staff (49.52% mostly prescribed at least one of the preventive techniques while few (31.23% reported that physiotherapists prescribed at least one of the preventive techniques. However, a considerable number of the patients (35.02% were never informed by any of the health staff on preventive measures. CONCLUSION: It was concluded that In-patients in Nigeria hospitals are “at risk” of developing pressure ulcers and that health care providers in Nigeria are not prescribing adequate preventive techniques to prevent pressure ulcers. [TAF Prev Med Bull 2012; 11(4.000: 415-420

  6. Selective low temperature microcap packaging technique through flip chip and wafer level alignment

    Science.gov (United States)

    Pan, C. T.

    2004-04-01

    In this study, a new technique of selective microcap bonding for packaging 3-D MEMS (Micro Electro Mechanical Systems) devices is presented. Microcap bonding on a selected area of the host wafer was successfully demonstrated through flip chip and wafer level alignment. A passivation treatment was developed to separate the microcap from the carrier wafer. A thick metal nickel (Ni) microcap was fabricated by an electroplating process. Its stiffness is superior to that of thin film poly-silicon made by the surface micromachining technique. For the selective microcap packaging process, photo definable materials served as the intermediate adhesive layer between the host wafer and the metal microcap on the carrier wafer. Several types of photo definable material used as the adhesive layer were tested and characterized for bonding strength. The experimental result shows that excellent bonding strength at low bonding temperature can be achieved.

  7. Paper spray mass spectrometry and PLS-DA improved by variable selection for the forensic discrimination of beers.

    Science.gov (United States)

    Pereira, Hebert Vinicius; Amador, Victória Silva; Sena, Marcelo Martins; Augusti, Rodinei; Piccin, Evandro

    2016-10-12

    Paper spray mass spectrometry (PS-MS) combined with partial least squares discriminant analysis (PLS-DA) was applied for the first time in a forensic context to a fast and effective differentiation of beers. Eight different brands of American standard lager beers produced by four different breweries (141 samples from 55 batches) were studied with the aim at performing a differentiation according to their market prices. The three leader brands in the Brazilian beer market, which have been subject to fraud, were modeled as the higher-price class, while the five brands most used for counterfeiting were modeled as the lower-price class. Parameters affecting the paper spray ionization were examined and optimized. The best MS signal stability and intensity was obtained while using the positive ion mode, with PS(+) mass spectra characterized by intense pairs of signals corresponding to sodium and potassium adducts of malto-oligosaccharides. Discrimination was not apparent neither by using visual inspection nor principal component analysis (PCA). However, supervised classification models provided high rates of sensitivity and specificity. A PLS-DA model using full scan mass spectra were improved by variable selection with ordered predictors selection (OPS), providing 100% of reliability rate and reducing the number of variables from 1701 to 60. This model was interpreted by detecting fifteen variables as the most significant VIP (variable importance in projection) scores, which were therefore considered diagnostic ions for this type of beer counterfeit.

  8. Enhancement of bimetallic Fe-Mn/CNTs nano catalyst activity and product selectivity using microemulsion technique

    Institute of Scientific and Technical Information of China (English)

    Zahra; Zolfaghari; Ahmad; Tavasoli; Saber; Tabyar; Ali; Nakhaei; Pour

    2014-01-01

    Bimetallic Fe-Mn nano catalysts supported on carbon nanotubes(CNTs) were prepared using microemulsion technique with water-to-surfactant ratios of 0.4-1.6. The nano catalysts were extensively characterized by different methods and their activity and selectivity in Fischer-Tropsch synthesis(FTS) have been assessed in a fixed-bed microreactor. The physicochemical properties and performance of the nanocatalysts were compared with the catalyst prepared by impregnation method. Very narrow particle size distribution has been produced by the microemulsion technique at relatively high loading of active metal. TEM images showed that small metal nano particles in the range of 3–7 nm were not only confined inside the CNTs but also located on the outer surface of the CNTs. Using microemulsion technique with water to surfactant ratio of0.4 decreased the average iron particle sizes to 5.1 nm. The reduction percentage and dispersion percentage were almost doubled. Activity and selectivity were found to be dependent on the catalyst preparation method and average iron particle size. CO conversion and FTS rate increased from 49.1% to 71.0% and 0.144 to 0.289 gHC/(gcat h), respectively. While the WGS rate decreased from 0.097 to 0.056 gCO2/(gcat h). C5+liquid hydrocarbons selectivity decreased slightly and olefins selectivity almost doubled.

  9. Selective evaluation of high density lipoprotein from mouse small intestine by an in situ perfusion technique[S

    Science.gov (United States)

    Yamaguchi, Satoshi; Zhang, Bo; Tomonaga, Takeshi; Seino, Utako; Kanagawa, Akiko; Segawa, Masaru; Nagasaka, Hironori; Suzuki, Akira; Miida, Takashi; Yamada, Sohsuke; Sasaguri, Yasuyuki; Doi, Takefumi; Saku, Keijiro; Okazaki, Mitsuyo; Tochino, Yoshihiro; Hirano, Ken-ichi

    2014-01-01

    The small intestine (SI) is the second-greatest source of HDL in mice. However, the selective evaluation of SI-derived HDL (SI-HDL) has been difficult because even the origin of HDL obtained in vivo from the intestinal lymph duct of anesthetized rodents is doubtful. To shed light on this question, we have developed a novel in situ perfusion technique using surgically isolated mouse SI, with which the possible filtration of plasma HDL into the SI lymph duct can be prevented. With the developed method, we studied the characteristics of and mechanism for the production and regulation of SI-HDL. Nascent HDL particles were detected in SI lymph perfusates in WT mice, but not in ABCA1 KO mice. SI-HDL had a high protein content and was smaller than plasma HDL. SI-HDL was rich in TG and apo AIV compared with HDL in liver perfusates. SI-HDL was increased by high-fat diets and reduced in apo E KO mice. In conclusion, with our in situ perfusion model that enables the selective evaluation of SI-HDL, we demonstrated that ABCA1 plays an important role in intestinal HDL production, and SI-HDL is small, dense, rich in apo AIV, and regulated by nutritional and genetic factors. PMID:24569139

  10. Feature selection for multi-class problems by using pairwise-class and all-class techniques

    Science.gov (United States)

    You, Mingyu; Li, Guo-Zheng

    2011-05-01

    Feature selection has been a key technology in massive data processing, e.g. in microarray data analysis with few samples but high-dimensional genes. One common problem in multi-class microarray data analysis is the unbalanced recognition or prediction accuracies among classes, which usually leads to poor system performance. One of the main reasons is the unfair feature (gene) selection method. In this paper, a novel feature selection framework by using pairwise-class and all-class techniques (namely FrPA) is proposed to balance the performance among classes and improve the average accuracy. The feature (gene) rank list on all classes and the lists on each pair of classes are all taken into consideration during feature selection. The strategy of round-robin is embedded into the framework to select final features from the different rank lists. Experimental results on several microarray data sets show that FrPA helps to achieve higher classification accuracy and balance the performance among classes.

  11. Determination of Effective Criteria for location Selection of WPC Plants from agricultural residues in Iran by AHP Technique

    Directory of Open Access Journals (Sweden)

    hasan alizadeh

    2017-02-01

    Full Text Available This study was aimed at determining the effective criteria for location selection of WPC Plants from agricultural residues in Iran. For this purpose, after review and studies papers and books, Six criteria" products and materials, regulations, technical and human, economic, infrastructure and environmental and also 30 sub-criteria were identified. The priority rates of these criteria and sub-criteria were evaluated by AHP technique. The results indicated that among 30 effective sub-criteria in location selection of the WPC plants from agricultural residues, amount of wastes supply (0.087, continuity of wastes supply, cost of wastes supply, amount of sales and export, granted facilities and less Hazards for the environment and forest had the highest priorities, which were rated as 0.071, 0.067, 0.065, 0.064 and 0.062 respectively.

  12. Development of technique on the induction and selection of in vitro mutant lines (Potato, Solanum tuberosum L.)

    Energy Technology Data Exchange (ETDEWEB)

    Yoo, Jang Ryoel; Lee, Yeong Il; Song, Hee Seop; Kim, Jae Seong; Sin, In Cheol; Lee, Sang Jae; Lee, Ki Un; Lim, Yong Taek [Korea Atomic Energy Res. Inst., Taejon (Korea, Republic of)

    1993-09-01

    For the development of the technique on the plant tissue culture and application of nuclear technique in the in vitro mutation breeding, present research laid emphasis on the development of techniques of potato tissue culture, and on the induction and selection of radiation mutation. Another culture for haploid induction, optimum radiation dosage for cybrid formation of potato and mutation induction from in vitro cultured microtuber and plantlets were investigated for modelling the technique on the induction and selection of in vitro mutant lines. Inheritance stability of the selected mutants were also studied in field condition. In vitro system of micropropagation and selection of mutation was summarized.

  13. A Comparison of Techniques for Camera Selection and Hand-Off in a Video Network

    Science.gov (United States)

    Li, Yiming; Bhanu, Bir

    Video networks are becoming increasingly important for solving many real-world problems. Multiple video sensors require collaboration when performing various tasks. One of the most basic tasks is the tracking of objects, which requires mechanisms to select a camera for a certain object and hand-off this object from one camera to another so as to accomplish seamless tracking. In this chapter, we provide a comprehensive comparison of current and emerging camera selection and hand-off techniques. We consider geometry-, statistics-, and game theory-based approaches and provide both theoretical and experimental comparison using centralized and distributed computational models. We provide simulation and experimental results using real data for various scenarios of a large number of cameras and objects for in-depth understanding of strengths and weaknesses of these techniques.

  14. Energy technology and global policy: a selection of contributin papers to the conference on energy policies and the international system. [Proceedings; 15 papers

    Energy Technology Data Exchange (ETDEWEB)

    Saltzman, S.E. (ed.)

    1977-01-01

    Energy is considered as part of a complex of resources and technologies, the effects of which are both interdisciplinary and transnational. This symposium took place at the height of the energy crisis, being planned long in advance. Elizabeth Mann Borgese presented an introductory paper. N.B. Guyol presented as Energy Overview, World Energy Requirements and Supplies, 1970--2000. Part I, Science and Technology Aspects, contains 5 papers: Some Problems Posed by the Growing Demand for Energy, Jacques Piccard; Solar Energy, A Key to Global Survival, William E. Heronemus; The Fast Breeder as a Cornerstone for Future Large Supplies of Energy, Wolf Hafele; Fusion Reactors as FUture Energy Sources, R. F. Post and F. L. Ribe; Energy Needs and the Atmosphere, Wendell Mordy. Part II, Interdisciplinary and Policy Aspects, contains 10 papers: A Survey of Internaational Energy Institutions and Policy Mechanisms, Keith J. Walton; A Crude but Plausible Model for Worldwide Energy Needs into the Next Century, Bernard T. Feld; Rural Progress and the Role of Energy among LDCs, Laurence I. Hewes, Jr.; Energy and Poorer Countries: the Context of a Strategy, Norton Ginsburg; Energy, Money, and International Trade, Ronald Segal; Peaceful Nuclear Power as a Military Equalizer, David Krieger; Energy and the Oceans, Elizabeth Mann Borgese; Research Priorities on Global Energy Policy Issues: A suggested Analtytical Framework, John Hanessian, Jr. and Jean M. Johnson; World Energy Model: A Tool for Long-Term Planning, Mihajlo Mesarovic and Eduard Pestel; and Proposal for the Establishment of an International Energy Institute, Elizabeth Mann Borgese. (MCW)

  15. Chromatic analysis by monitoring unmodified silver nanoparticles reduction on double layer microfluidic paper-based analytical devices for selective and sensitive determination of mercury(II).

    Science.gov (United States)

    Meelapsom, Rattapol; Jarujamrus, Purim; Amatatongchai, Maliwan; Chairam, Sanoe; Kulsing, Chadin; Shen, Wei

    2016-08-01

    This study demonstrates chromatic analysis based on a simple red green blue (RGB) color model for sensitive and selective determination of mercury(II). The analysis was performed by monitoring the color change of a microfluidic Paper-based Analytical Device (µPAD). The device was fabricated by using alkyl ketene dimer (AKD)-inkjet printing and doped with unmodified silver nanoparticles (AgNPs) which were disintegrated when being exposed to mercury(II). The color intensity was detected by using an apparatus consisting of a digital camera and a homemade light box generating constant light intensity. A progressive increase in color intensity of the tested area on the µPAD (3.0mm) was observed with increasing mercury(II) concentration. The developed system enabled quantification of mercury(II) at low concentration with the detection limit of 0.001mgL(-1) (3 SD blank/slope of the calibration curve) and small sample volume uptake (2µL). The linearity range of the calibration curve in this technique was demonstrated from 0.05 to 7mgL(-1) (r(2)=0.998) with good precision (RSD less than 4.1%). Greater selectivity towards mercury(II) compared with potential interference ions was also observed. Furthermore, the percentage recoveries of spiked water samples were in an acceptable range which was in agreement with the values obtained from the conventional method utilizing cold vapor atomic absorption spectrometer (CVAAS). The proposed technique allows a rapid, simple, sensitive and selective analysis of trace mercury(II) in water samples.

  16. A comparative analysis of different hybrid MCDM techniques considering a case of selection of 3D printers

    Directory of Open Access Journals (Sweden)

    Debapriyo Paul

    2015-07-01

    Full Text Available A multitude of techniques fall under the domain of Multi- Criteria Decision Making (MCDM which is used to select the best alternative among the available ones. The objective of this paper is to compare some of these techniques with respect to the problem of selection of 3D printers, which is associated with multiple attributes. The weights of the criteria were determined using analytical network process (ANP. Next, the alternatives were ranked using three different MCDM techniques- 1.TOPSIS which ranks alternatives having the shortest distance to the ideal solution as well as the greatest distance from the negative-ideal solution 2. Deng’s Similarity based Approach where the most preferred alternative should have the highest degree of similarity to the positive ideal solution and the lowest degree of similarity to the negative-ideal solution and 3.PROMETHEE and GAIA. The solutions for each of these three cases were analyzed thoroughly, and reasons for any deviations were discussed.

  17. Comparison of Selective Culturing and Biochemical Techniques for Measuring Biological Activity in Geothermal Process Fluids

    Energy Technology Data Exchange (ETDEWEB)

    Pryfogle, Peter Albert

    2000-09-01

    For the past three years, scientists at the Idaho National Engineering and Environmental Laboratory have been conducting studies aimed at determining the presence and influence of bacteria found in geothermal plant cooling water systems. In particular, the efforts have been directed at understanding the conditions that lead to the growth and accumulation of biomass within these systems, reducing the operational and thermal efficiency. Initially, the methods selected were based upon the current practices used by the industry and included the collection of water quality parameters, the measurement of soluble carbon, and the use of selective medial for the determination of the number density of various types of organisms. This data has been collected on a seasonal basis at six different facilities located at the Geysers’ in Northern California. While this data is valuable in establishing biological growth trends in the facilities and providing an initial determination of upset or off-normal conditions, more detailed information about the biological activity is needed to determine what is triggering or sustaining the growth in these facilities in order to develop improved monitoring and treatment techniques. In recent years, new biochemical approaches, based upon the analyses of phospholipid fatty acids and DNA recovered from environmental samples, have been developed and commercialized. These techniques, in addition to allowing the determination of the quantity of biomass, also provide information on the community composition and the nutritional status of the organisms. During the past year, samples collected from the condenser effluents of four of the plants from The Geysers’ were analyzed using these methods and compared with the results obtained from selective culturing techniques. The purpose of this effort was to evaluate the cost-benefit of implementing these techniques for tracking microbial activity in the plant study, in place of the selective culturing

  18. Selection of machining datum and allocation of tolerance through tolerance charting technique

    Science.gov (United States)

    Thilak, Manoharan; Sivakumar, Karuppan; Jayaprakash, Govindharajalu

    2012-07-01

    Tolerance charting is an effective tool to determine the optimal allocation of working dimensions and working tolerances such that the blueprint dimensions and tolerances can be achieved to accomplish the cost objectives. The selection of machining datum and allocation of tolerances are critical in any machining process planning as they directly affect any setup methods/machine tools selection and machining time. This paper mainly focuses on the selection of optimum machining datums and machining tolerances simultaneously in process planning. A dynamic tolerance charting constraint scheme is developed and implemented in the optimization procedure. An optimization model is formulated for selecting machining datum and tolerances and implemented with an algorithm namely Elitist Non-Dominated Sorting Genetic Algorithm (NSGA-II).The computational results indicate that the proposed methodology is capable and robust in finding the optimal machining datum set and tolerances.

  19. Sample size estimation and sampling techniques for selecting a representative sample

    Directory of Open Access Journals (Sweden)

    Aamir Omair

    2014-01-01

    Full Text Available Introduction: The purpose of this article is to provide a general understanding of the concepts of sampling as applied to health-related research. Sample Size Estimation: It is important to select a representative sample in quantitative research in order to be able to generalize the results to the target population. The sample should be of the required sample size and must be selected using an appropriate probability sampling technique. There are many hidden biases which can adversely affect the outcome of the study. Important factors to consider for estimating the sample size include the size of the study population, confidence level, expected proportion of the outcome variable (for categorical variables/standard deviation of the outcome variable (for numerical variables, and the required precision (margin of accuracy from the study. The more the precision required, the greater is the required sample size. Sampling Techniques: The probability sampling techniques applied for health related research include simple random sampling, systematic random sampling, stratified random sampling, cluster sampling, and multistage sampling. These are more recommended than the nonprobability sampling techniques, because the results of the study can be generalized to the target population.

  20. Minimally invasive selective osteotomy of the knee: A new surgical technique.

    Science.gov (United States)

    Leon, H O; Blanco, C E; Guthrie, T B

    2001-05-01

    We present a simple surgical technique created by the authors to address degenerative chondral lesions of the knee and its application in a limited prospective case series. The technique assumes the concept of beneficial epiphyseal changes caused by disruption of the subchondral bone in improving symptoms, as with drilling, microfracture, periarticular osteotomy, and other invasive procedures. Minimally invasive selective osteotomy (MISO) is an expansion of the arthroscopic treatment of the knee, specifically targeting symptomatic lesions with minimal additional trauma and cost, while avoiding disruption of the articular surface of the subchondral bone. The technique involves a mimimal access approach with selective saw cuts placed with a 1-cm oscillating blade parallel to the joint surface 1 to 1.5 cm deep to identified lesions. The technique does not address malalignment but can address lesions not addressed by classic osteotomies and, as such, may be combined with other corrective alignment procedures as necessary. We present the results of MISO of the knee in a case series of 62 outpatients carried out at the Orthopaedic Division of the Clinical and Surgical Hermanos Ameijeiras Hospital in Havana, Cuba. At 2-year follow-up, there was improvement of symptoms without significant complications.

  1. EDITORIAL: Selected Papers from RIAO/OPTILAS 2007 (Campinas, São Paulo, Brazil, 21 26 October 2007)

    Science.gov (United States)

    Wetter, Niklaus; Frejlich, Jaime

    2008-10-01

    This special issue contains papers presented at the 6th Ibero-American Conference on Optics and the 9th Latin-American Meeting on Optics, Lasers and Applications (RIAO/OPTILAS'07) that was held in Campinas, São Paulo, Brazil, 21-26 October 2007. The RIAO/OPTILAS conferences are held every three years in Latino-American and Iberian countries and focus on senior and young researchers as well as students working in all areas of optics, mainly in these countries, but warmly welcoming participants from all over the world. The RIAO/OPTILAS'07 conference followed the one held in Venezuela in 2004 and precedes the next one already arranged to be held in Peru in 2010. The most active countries in the regions such as Argentina, Brazil, Mexico, Spain, Colombia and Venezuela have registered a large number of participants but other countries in the regions such as Chile, Cuba, Ecuador, Peru, Portugal and Uruguay have also sent a representative number of participants. About 7% of the registered participants came from Europe, the USA and the Middle East. It was very stimulating to realize that about 44% of the accepted registered participants were students. An international committee was in charge of selecting the best student posters and ten students were awarded with prizes offered by organizations (SPIE, Wiley & Sons) and individuals. There were 7 plenary invited talks given by high quality researchers from Argentina, Germany, Israel, Italy, Mexico and Ukraine and 12 invited contributions from Brazil, Finland, Italy, Spain, UK and Uruguay. The Book of Abstracts recorded 471 communications divided into 15 different topics with 160 oral communications in three parallel sessions and 311 posters in two special sessions. We are particularly grateful to SPIE, OSA and ICTP who have provided us with important financial support mainly devoted to supporting the participation of students in this conference. We also acknowledge financial and organizational support from Brazilian federal

  2. High resolution x-ray fluorescence spectroscopy - a new technique for site- and spin-selectivity

    Energy Technology Data Exchange (ETDEWEB)

    Wang, Xin [Univ. of California, Davis, CA (United States). Dept. of Applied Science

    1996-12-01

    X-ray spectroscopy has long been used to elucidate electronic and structural information of molecules. One of the weaknesses of x-ray absorption is its sensitivity to all of the atoms of a particular element in a sample. Through out this thesis, a new technique for enhancing the site- and spin-selectivity of the x-ray absorption has been developed. By high resolution fluorescence detection, the chemical sensitivity of K emission spectra can be used to identify oxidation and spin states; it can also be used to facilitate site-selective X-ray Absorption Near Edge Structure (XANES) and site-selective Extended X-ray Absorption Fine Structure (EXAFS). The spin polarization in K fluorescence could be used to generate spin selective XANES or spin-polarized EXAFS, which provides a new measure of the spin density, or the nature of magnetic neighboring atoms. Finally, dramatic line-sharpening effects by the combination of absorption and emission processes allow observation of structure that is normally unobservable. All these unique characters can enormously simplify a complex x-ray spectrum. Applications of this novel technique have generated information from various transition-metal model compounds to metalloproteins. The absorption and emission spectra by high resolution fluorescence detection are interdependent. The ligand field multiplet model has been used for the analysis of K{alpha} and K{beta} emission spectra. First demonstration on different chemical states of Fe compounds has shown the applicability of site selectivity and spin polarization. Different interatomic distances of the same element in different chemical forms have been detected using site-selective EXAFS.

  3. Verification Techniques for Parameter Selection and Bayesian Model Calibration Presented for an HIV Model

    Science.gov (United States)

    Wentworth, Mami Tonoe

    Uncertainty quantification plays an important role when making predictive estimates of model responses. In this context, uncertainty quantification is defined as quantifying and reducing uncertainties, and the objective is to quantify uncertainties in parameter, model and measurements, and propagate the uncertainties through the model, so that one can make a predictive estimate with quantified uncertainties. Two of the aspects of uncertainty quantification that must be performed prior to propagating uncertainties are model calibration and parameter selection. There are several efficient techniques for these processes; however, the accuracy of these methods are often not verified. This is the motivation for our work, and in this dissertation, we present and illustrate verification frameworks for model calibration and parameter selection in the context of biological and physical models. First, HIV models, developed and improved by [2, 3, 8], describe the viral infection dynamics of an HIV disease. These are also used to make predictive estimates of viral loads and T-cell counts and to construct an optimal control for drug therapy. Estimating input parameters is an essential step prior to uncertainty quantification. However, not all the parameters are identifiable, implying that they cannot be uniquely determined by the observations. These unidentifiable parameters can be partially removed by performing parameter selection, a process in which parameters that have minimal impacts on the model response are determined. We provide verification techniques for Bayesian model calibration and parameter selection for an HIV model. As an example of a physical model, we employ a heat model with experimental measurements presented in [10]. A steady-state heat model represents a prototypical behavior for heat conduction and diffusion process involved in a thermal-hydraulic model, which is a part of nuclear reactor models. We employ this simple heat model to illustrate verification

  4. Selected papers from Middleware'98: The IFIP International Conference on Distributed Systems Platforms and Open Distributed Processing

    Science.gov (United States)

    Davies, Nigel; Raymond, Kerry; Blair, Gordon

    1999-03-01

    In recent years the distributed systems community has witnessed a growth in the number of conferences, leading to difficulties in tracking the literature and a consequent loss of awareness of work done by others in this important research domain. In an attempt to synthesize many of the smaller workshops and conferences in the field, and to bring together research communities which were becoming fragmented, IFIP staged Middleware'98: The IFIP International Conference on Distributed Systems Platforms and Open Distributed Processing. The conference was widely publicized and attracted over 150 technical submissions including 135 full paper submissions. The final programme consisted of 28 papers, giving an acceptance ratio of a little over one in five. More crucially, the programme accurately reflected the state of the art in middleware research, addressing issues such as ORB architectures, engineering of large-scale systems and multimedia. The traditional role of middleware as a point of integration and service provision was clearly intact, but the programme stressed the importance of emerging `must-have' features such as support for extensibility, mobility and quality of service. The Middleware'98 conference was held in the Lake District, UK in September 1998. Over 160 delegates made the journey to one of the UK's most beautiful regions and contributed to a lively series of presentations and debates. A permanent record of the conference, including transcripts of the panel discussions which took place, is available at: http://www.comp.lancs.ac.uk/computing/middleware98/ Based on their original reviews and the reactions of delegates to the ensuing presentations we have selected six papers from the conference for publication in this special issue of Distributed Systems Engineering. The first paper, entitled `Jonathan: an open distributed processing environment in Java', by Dumant et al describes a minimal, modular ORB framework which can be used for supporting real

  5. Fish recognition based on the combination between robust feature selection, image segmentation and geometrical parameter techniques using Artificial Neural Network and Decision Tree

    CERN Document Server

    Alsmadi, Mutasem Khalil Sari; Noah, Shahrul Azman; Almarashdah, Ibrahim

    2009-01-01

    We presents in this paper a novel fish classification methodology based on a combination between robust feature selection, image segmentation and geometrical parameter techniques using Artificial Neural Network and Decision Tree. Unlike existing works for fish classification, which propose descriptors and do not analyze their individual impacts in the whole classification task and do not make the combination between the feature selection, image segmentation and geometrical parameter, we propose a general set of features extraction using robust feature selection, image segmentation and geometrical parameter and their correspondent weights that should be used as a priori information by the classifier. In this sense, instead of studying techniques for improving the classifiers structure itself, we consider it as a black box and focus our research in the determination of which input information must bring a robust fish discrimination.The main contribution of this paper is enhancement recognize and classify fishes...

  6. Electromembrane extraction as a rapid and selective miniaturized sample preparation technique for biological fluids

    DEFF Research Database (Denmark)

    Gjelstad, Astrid; Pedersen-Bjergaard, Stig; Seip, Knut Fredrik

    2015-01-01

    This special report discusses the sample preparation method electromembrane extraction, which was introduced in 2006 as a rapid and selective miniaturized extraction method. The extraction principle is based on isolation of charged analytes extracted from an aqueous sample, across a thin film....... Technical aspects of electromembrane extraction, important extraction parameters as well as a handful of examples of applications from different biological samples and bioanalytical areas are discussed in the paper....

  7. A review of multi-criteria decision making techniques for supplier evaluation and selection

    Directory of Open Access Journals (Sweden)

    Prince Agarwal

    2011-10-01

    Full Text Available Supplier evaluation and selection has been a vital issue of strategic importance for long time. Different multi-criteria decision making (MCDM approaches have been proposed by the researchers in past, to solve the supplier evaluation and selection problem. In this paper, we present a review of various MCDM methodologies reported in the literature for solving the supplier evaluation and selection process. The review is solely based on sixty-eight research articles, including eight review articles in the academic literature from 2000 to 2011. We try to find out the most prevalent approach in the articles and thereby present the future scope of arriving at an optimal solution to the problem, based on the specifications, the strategies and the requirements of the buyers. The study presents that with the change in processes and the requirements, how the approach of the manufacturing industry has shifted from striving for operational effectiveness to the strategic partnership in the dyadic relationship.

  8. Does Angling Technique Selectively Target Fishes Based on Their Behavioural Type?

    Directory of Open Access Journals (Sweden)

    Alexander D M Wilson

    Full Text Available Recently, there has been growing recognition that fish harvesting practices can have important impacts on the phenotypic distributions and diversity of natural populations through a phenomenon known as fisheries-induced evolution. Here we experimentally show that two common recreational angling techniques (active crank baits versus passive soft plastics differentially target wild largemouth bass (Micropterus salmoides and rock bass (Ambloplites rupestris based on variation in their behavioural tendencies. Fish were first angled in the wild using both techniques and then brought back to the laboratory and tested for individual-level differences in common estimates of personality (refuge emergence, flight-initiation-distance, latency-to-recapture and with a net, and general activity in an in-lake experimental arena. We found that different angling techniques appear to selectively target these species based on their boldness (as characterized by refuge emergence, a standard measure of boldness in fishes but not other assays of personality. We also observed that body size was independently a significant predictor of personality in both species, though this varied between traits and species. Our results suggest a context-dependency for vulnerability to capture relative to behaviour in these fish species. Ascertaining the selective pressures angling practices exert on natural populations is an important area of fisheries research with significant implications for ecology, evolution, and resource management.

  9. Comparison of different measurement techniques and variable selection methods for FT-MIR in wine analysis.

    Science.gov (United States)

    Friedel, Matthias; Patz, Claus-Dieter; Dietrich, Helmut

    2013-12-15

    For more than a decade, Fourier-transform infrared (FTIR) spectroscopy combined with partial least squares (PLS) regression has been used as a fast and reliable method for simultaneous estimation of multiple parameters in wine. In this study, different FTIR instruments (single bounce attenuated total reflection, transmission with variable and defined pathlength) and different variable selection techniques (full spectrum PLS, genetic algorithm PLS, interval PLS, principal variable PLS) were compared on an identical sample set of international wines and ten wine parameters. Results suggest that the single bounce attenuated total reflection technique is well suited for the analysis of ethanol, relative density and sugars, but less accurate in the analysis of organic acid content. The transmission instrument with variable pathlength shows good validation results for the analysis of organic acids, but less accurate results for the analysis of ethanol and relative density as compared to the other instruments. The transmission instrument with defined pathlength was well suited for the analysis for all parameters investigated in this study. Variable selection improved model robustness and calibration results, with genetic algorithm PLS being the most effective technique.

  10. The ability of sperm selection techniques to remove single-or double-strand DNA damage

    Institute of Scientific and Technical Information of China (English)

    Maria Enciso; Miriam Iglesias; Isabel Galin; Jonas Sarasa; Antonio Gosalvez; Jaime Gosalvez

    2011-01-01

    @@ A wide variety of techniques for the preparation of sperm are currently available,of which the most commonly employed are densitygradient centrifugation (DGC) and swim-up (SUP).To date,these methods appear to be effective in selecting functional sperm for assisted reproduction techniques (ART),but they may have negative effects on sperm DNA.In this study,the ability of these semen processing techniques to eliminate spermatozoa containing single- and double-strand DNA damage was assessed by the two-tailed comet assay and the sperm chromatin dispersion test in 1[57]semen samples from patients seeking assisted reproduction treatment.Our results indicated that SUP and DGC are equally efficient in eliminating spermatozoa containing double-strand DNA damage and sperm with highly damaged (degraded) DNA,as characterized by the presence of both single- and double-strand DNA breaks.However,DGC is more efficient than SUP in selecting spermatozoa that are free from single-strand DNA damage.Future studies should characterise the importance of the various types of DNA damage and examine the sperm processing protocols used in each laboratory to determine their ability to eliminate DNA damage and hence,prevent the potential transmission of genetic mutations via ART.

  11. Adhesive dentistry: the development of immediate dentin sealing/selective etching bonding technique.

    Science.gov (United States)

    Helvey, Gregg A

    2011-01-01

    A major objective of dental research over the past 60 years has been a search for the "dream-team" of dental adhesives. In fact, a recent Medline search produced more than 6,500 papers on dentin bonding and its techniques. Adhesive systems are designed to retain direct and indirect restorations, minimize leakage at the margin, and be simple to place while producing consistent results. The development of materials and techniques has an interesting history; some have recirculated from the past and are being used in some form today. Buonocore used the etchant phosphoric acid at the beginning of the adhesive revolution. Though not accepted for many years it eventually became the "gold standard" for etching enamel. Technique sensitivity moved it out of favor and, through the development of self-etching acidic primers, was eliminated from some adhesive systems. Although these primers may have successfully addressed postoperative sensitivity, adhesion was compromised. The bond strength of these systems has now been improved with the incorporation of phosphoric acid-etch to condition enamel prior to using the adhesive system. This article will trace the history of adhesive techniques and materials and how it has led to the creation of a new technique that combines two bonding methods.

  12. The kick-out mass selection technique for ions stored in an Electrostatic Ion Beam Trap

    Energy Technology Data Exchange (ETDEWEB)

    Toker, Y; Altstein, N; Aviv, O; Rappaport, M L; Heber, O; Schwalm, D; Strasser, D; Zajfman, D [Department of Particle Physics, Weizmann Institute of Science, Rehovot, 76100 (Israel)], E-mail: jtoker@weizmann.ac.il

    2009-09-15

    A simple mass selection technique which allows one to clean a keV ion beam of undesirable masses while stored in an Electrostatic Ion Beam Trap (EIBT) is described. The technique is based on the time-of-flight principle and takes advantage of the long storage times and self-bunching that are possible in this type of traps (self bunching being the effect that keeps ions of the same mass bunched in spite of their finite distributions of velocities and trajectories). As the oscillation period is proportional to the square root of the ion mass, bunches containing ions of different masses will separate in space with increasing storage time and can be kicked out by a pulsed deflector mounted inside the trap. A mass selector of this type has been implemented successfully in an EIBT connected to an Even-Lavie supersonic expansion source and is routinely used in ongoing cluster experiments.

  13. A Multiple Criteria Decision Modelling approach to selection of estimation techniques for fitting extreme floods

    Science.gov (United States)

    Duckstein, L.; Bobée, B.; Ashkar, F.

    1991-09-01

    The problem of fitting a probability distribution, here log-Pearson Type III distribution, to extreme floods is considered from the point of view of two numerical and three non-numerical criteria. The six techniques of fitting considered include classical techniques (maximum likelihood, moments of logarithms of flows) and new methods such as mixed moments and the generalized method of moments developed by two of the co-authors. The latter method consists of fitting the distribution using moments of different order, in particular the SAM method (Sundry Averages Method) uses the moments of order 0 (geometric mean), 1 (arithmetic mean), -1 (harmonic mean) and leads to a smaller variance of the parameters. The criteria used to select the method of parameter estimation are: - the two statistical criteria of mean square error and bias; - the two computational criteria of program availability and ease of use; - the user-related criterion of acceptability. These criteria are transformed into value functions or fuzzy set membership functions and then three Multiple Criteria Decision Modelling (MCDM) techniques, namely, composite programming, ELECTRE, and MCQA, are applied to rank the estimation techniques.

  14. A survey on filter techniques for feature selection in gene expression microarray analysis.

    Science.gov (United States)

    Lazar, Cosmin; Taminau, Jonatan; Meganck, Stijn; Steenhoff, David; Coletta, Alain; Molter, Colin; de Schaetzen, Virginie; Duque, Robin; Bersini, Hugues; Nowé, Ann

    2012-01-01

    A plenitude of feature selection (FS) methods is available in the literature, most of them rising as a need to analyze data of very high dimension, usually hundreds or thousands of variables. Such data sets are now available in various application areas like combinatorial chemistry, text mining, multivariate imaging, or bioinformatics. As a general accepted rule, these methods are grouped in filters, wrappers, and embedded methods. More recently, a new group of methods has been added in the general framework of FS: ensemble techniques. The focus in this survey is on filter feature selection methods for informative feature discovery in gene expression microarray (GEM) analysis, which is also known as differentially expressed genes (DEGs) discovery, gene prioritization, or biomarker discovery. We present them in a unified framework, using standardized notations in order to reveal their technical details and to highlight their common characteristics as well as their particularities.

  15. Supplier Selection in the Thermal Tourism Enterprises with Using Multi Criteria Decision Making Techniques

    Directory of Open Access Journals (Sweden)

    Hatice Gündüz

    2015-06-01

    Full Text Available Turkey has many natural health resources and the interest in Thermal Tourism has increased. Thermal Tourism Enterprises serve their experienced medical staff, treatment methods and the curative springs for the purpose of care services. On the other hand, these enterprises are also the place to have both a rest and a good time. In this study, the supplier selection application is performed in the Thermal Tourism Enterprise that offers a combination of services as health, recreation and entertainment. The criteria as product quality and performance, product information, product arrival time, price, quality practices, flexibility and the collaboration level have been considered. By using multi-criteria decision making techniques as Analytic Hierarchy Process (AHP and TOPSIS then the suggestions on the selecting the best supplier are offered.

  16. Evaluating Acoustic Emission Signals as an in situ process monitoring technique for Selective Laser Melting (SLM)

    Energy Technology Data Exchange (ETDEWEB)

    Fisher, Karl A. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Candy, Jim V. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Guss, Gabe [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Mathews, M. J. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

    2016-10-14

    In situ real-time monitoring of the Selective Laser Melting (SLM) process has significant implications for the AM community. The ability to adjust the SLM process parameters during a build (in real-time) can save time, money and eliminate expensive material waste. Having a feedback loop in the process would allow the system to potentially ‘fix’ problem regions before a next powder layer is added. In this study we have investigated acoustic emission (AE) phenomena generated during the SLM process, and evaluated the results in terms of a single process parameter, of an in situ process monitoring technique.

  17. Selective laser melted titanium implants: a new technique for the reconstruction of extensive zygomatic complex defects.

    Science.gov (United States)

    Rotaru, Horatiu; Schumacher, Ralf; Kim, Seong-Gon; Dinu, Cristian

    2015-12-01

    The restoration of extensive zygomatic complex defects is a surgical challenge owing to the difficulty of accurately restoring the normal anatomy, symmetry, proper facial projection and facial width. In the present study, an extensive post-traumatic zygomatic bone defect was reconstructed using a custom-made implant that was made with a selective laser melting (SLM) technique. The computer-designed implant had the proper geometry and fit perfectly into the defect without requiring any intraoperative adjustments. A one-year follow-up revealed a stable outcome with no complications.

  18. The use of selected theatre rehearsal technique activities with African-American adolescents labeled "behavior disordered".

    Science.gov (United States)

    Anderson, M G

    1992-01-01

    The extensive literature on the overrepresentation of adolescent African-American male learners in classes for students identified as behavior disordered has essentially not addressed the problems caused by teacher reactions to adolescent conversational language use, the qualitative differences in language choices, or the impact of the conversational choices of adolescents on their educational treatment. This article explores how the dramaturgical perspective of selected Theatre Rehearsal Technique (TRT) activities can be used as learning experiences in communication with this student population. If these students gain quantifiable success in their social communication interactions, reassessment of their special education placement might facilitate their entrance into less restrictive educational environments.

  19. Mining for diagnostic information in body surface potential maps: A comparison of feature selection techniques

    Directory of Open Access Journals (Sweden)

    McCullagh Paul J

    2005-09-01

    Full Text Available Abstract Background In body surface potential mapping, increased spatial sampling is used to allow more accurate detection of a cardiac abnormality. Although diagnostically superior to more conventional electrocardiographic techniques, the perceived complexity of the Body Surface Potential Map (BSPM acquisition process has prohibited its acceptance in clinical practice. For this reason there is an interest in striking a compromise between the minimum number of electrocardiographic recording sites required to sample the maximum electrocardiographic information. Methods In the current study, several techniques widely used in the domains of data mining and knowledge discovery have been employed to mine for diagnostic information in 192 lead BSPMs. In particular, the Single Variable Classifier (SVC based filter and Sequential Forward Selection (SFS based wrapper approaches to feature selection have been implemented and evaluated. Using a set of recordings from 116 subjects, the diagnostic ability of subsets of 3, 6, 9, 12, 24 and 32 electrocardiographic recording sites have been evaluated based on their ability to correctly asses the presence or absence of Myocardial Infarction (MI. Results It was observed that the wrapper approach, using sequential forward selection and a 5 nearest neighbour classifier, was capable of choosing a set of 24 recording sites that could correctly classify 82.8% of BSPMs. Although the filter method performed slightly less favourably, the performance was comparable with a classification accuracy of 79.3%. In addition, experiments were conducted to show how (a features chosen using the wrapper approach were specific to the classifier used in the selection model, and (b lead subsets chosen were not necessarily unique. Conclusion It was concluded that both the filter and wrapper approaches adopted were suitable for guiding the choice of recording sites useful for determining the presence of MI. It should be noted however

  20. Visual quantification of Hg on a microfluidic paper-based analytical device using distance-based detection technique

    Science.gov (United States)

    Cai, Longfei; Fang, Yanling; Mo, Yuanhui; Huang, Yongshi; Xu, Chunxiu; Zhang, Zhen; Wang, Maoxian

    2017-08-01

    We presented a distance-based detection method for visual quantification of mercury ions on a microfluidic paper-based analytical device (μPAD). Dithizone in NaOH solution was used as chromogenic reagent and deposited onto paper channel delimited by hydrophobic wax barrier. Reactions happened between mercury ions and dithizone to form an insoluble colored complex, producing colored precipitate on the paper channel. The length of colored precipitate could be readily measured using the printed ruler along each device. The length of precipitate increase linearly with the mercury concentrations, mercury in sample solution could be quantified by measuring the length of the colored precipitate. Being free of any electronic instruments, this method has the advantages of portability, ease of use, low cost and disposability. This presented method was used to detect mercury ions in a synthetic sample, demonstrating its potential in on-site and real time analysis.

  1. Detection of Thermal Sublethal Injury in Escherichia coli via the Selective Medium Plating Technique: Mechanisms and Improvements

    Science.gov (United States)

    Espina, Laura; García-Gonzalo, Diego; Pagán, Rafael

    2016-01-01

    In food preservation, the synergistic combination of different technologies aims to maximize the total lethality of the process and minimize the intensity of each hurdle. This is especially the case when at least one of the treatments can cause sublethal (reparable) injury in a great proportion of the population, so that sublethally injured cells can end up being entirely inactivated by the other hurdle(s). The selective medium plating technique (SMPT) is extensively used to enumerate bacterial sublethal injury after inimical treatments, being sodium chloride added to the recovery medium to detect damaged bacterial envelopes. However, little work has been done to explain the reasons for the inability of sublethally injured cells to outgrow in selective agar media, whereas they are able to grow in non-selective agar. In the present paper, the performance of SMPT on Escherichia coli cells after heat treatments is explored by applying different selective agents in the recovery media, using mutants lacking factors involved in osmoregulation, and also by examining the integrity of the cytoplasmic membrane. In view of the results, the possibility of a specific toxic effect of Na+ as the main mechanism under SMPT was discarded, since the same level of sublethal injury was detected using KCl instead of NaCl. The synthesis of the osmoprotectant trehalose determined the maximum osmotolerance of intact cells to the selective agents, but was not crucial in the quantification of sublethal injury. Moreover, for the first time, the extent of sublethal injury detected via SMPT was directly correlated with the physical loss of integrity of the cell membrane in 99.999% of the initial population. This was achieved through statistical analysis of flow cytometry data using propidium iodide-exclusion technique when that dye was added before thermal treatments. The present work confirms the adequacy of SMPT as a tool for detecting the occurrence and quantity of sublethally injured cells

  2. International Trends in Biology Education Research from 1997 to 2014: A Content Analysis of Papers in Selected Journals

    Science.gov (United States)

    Gul, Seyda; Sozbilir, Mustafa

    2016-01-01

    This paper provides a descriptive content analysis of biology education research papers published in eight major academic journals indexed in Social Science Citation Index [SSCI] of Thomson Reuters® from 1997 to 2014. Total of 1376 biology education research [BER] papers were examined. The findings indicated that most of the papers were published…

  3. Optimally invasive exposure in revision total hip arthroplasty: a guide to selection and technique.

    Science.gov (United States)

    Toms, Andrew; Greidanus, Nelson; Garbuz, Donald; Masri, Bassam A; Duncan, Clive P

    2006-01-01

    Revision total hip arthroplasty requires a careful surgical plan. Selection of the appropriate exposure is an essential step for success. Exposure is important not only for the complete and safe visualization and extraction of components and cement, but also for the achievement of a stable construct at the end of the procedure. In addition, controlled exposure minimizes intraoperative complications and bone and soft-tissue damage, essential considerations for eradication of infection. Three questions need to be addressed at the preoperative stage: (1) Is this a straightforward revision that can be handled with a standard approach? (2) Is this a more complex revision requiring an extensile exposure? (3) Is this an unusual revision requiring special techniques to allow adequate access that cannot be obtained using standard extensile techniques? Each group of exposures presents three further possibilities, each of which has specific indications, advantages, and disadvantages. In conjunction with the preoperative analysis, this knowledge should enable the revision surgeon to select the most appropriate approach, resulting in optimal exposure for each individual revision scenario.

  4. Online Paper Review Analysis

    Directory of Open Access Journals (Sweden)

    Doaa Mohey El-Din

    2015-09-01

    Full Text Available Sentiment analysis or opinion mining is used to automate the detection of subjective information such as opinions, attitudes, emotions, and feelings. Hundreds of thousands care about scientific research and take a long time to select suitable papers for their research. Online reviews on papers are the essential source to help them. The reviews save reading time and save papers cost. This paper proposes a new technique to analyze online reviews. It is called sentiment analysis of online papers (SAOOP. SAOOP is a new technique used for enhancing bag-of-words model, improving the accuracy and performance. SAOOP is useful in increasing the understanding rate of review's sentences through higher language coverage cases. SAOOP introduces solutions for some sentiment analysis challenges and uses them to achieve higher accuracy. This paper also presents a measure of topic domain attributes, which provides a ranking of total judging on each text review for assessing and comparing results across different sentiment techniques for a given text review. Finally, showing the efficiency of the proposed approach by comparing the proposed technique with two sentiment analysis techniques. The comparison terms are based on measuring accuracy, performance and understanding rate of sentences.

  5. PREFACE: Selected papers from the Fourth Topical Conference on Nanoscale Science and Engineering of the American Institute of Chemical Engineers

    Science.gov (United States)

    Wong, Michael S.; Lee, Gil U.

    2005-07-01

    systems and tissue engineering; nanotechnology for drug delivery and imaging; bionanotechnology in cancer and cardiovascular disease; nanostructured biomaterials; nanotechnology in bioengineering; nanofabrication of biosensing devices. We are pleased to present a selection of research papers in this special issue of Nanotechnology on behalf of the Nanoscale Science and Engineering Forum (NSEF). NSEF was established in 2001 as a new division of AIChE to promote nanotechnology efforts in chemical engineering. The chemical engineering discipline deals with the production and processing of chemicals and materials, and does so through a fundamental understanding of the core issues of transport, thermodynamics, and kinetics that exist at multiple length scales. Thus, it should come as no surprise that chemical engineers have been pursuing nanotechnology research for the last fifty years. For example, fuel production has benefited immensely from improved catalysts in which their pore structure is controlled with nanoscale precision, and polymer properties have been improved by controlling the polymer supramolecular structure at the nanometre scale. Chemical engineering will continue to make important contributions to nanotechnology, and will play a critical role in the transition from basic science and engineering research to commercial applications. We would like to thank all of the authors who contributed to this special issue; the three NSEF poster presentation award winners for their papers (Sureshkumar, Sunkara, and Rinaldi groups); Dr Nina Couzin, Publisher of Nanotechnology, for her support and enthusiasm for this project; Drs Sharon Glotzer and Dan Coy who chaired the topical conference; and Drs Meyya Meyyappan and Brett Cruden (NASA Ames Research Center) for their assistance in the initial planning stages. We also take this opportunity to thank the many people and organizations who have supported the 2004 topical conference along the way, which include all the session

  6. CTAC-89 - International Conference on Computational Techniques and Applications, Griffith University, Brisbane, Australia, July 10-12, 1989, Selected Papers

    Science.gov (United States)

    Hogarth, W. L.

    Recent advances in computational fluid dynamics (CFD) are discussed in reviews and reports. Topics addressed include CFD methods for petroleum-reservoir simulation, a three-dimensional Euler code for calculating flowfields in centrifugal compressor diffusers, a parabolic multigrid method for incompressible viscous flows using a group-explicit relaxation scheme, sequential solutions for the reduced/complete Navier-Stokes equations with multigrid acceleration, and an approximate-factorization explicit method for CFD. Also examined are wave-propagation analysis for finite-difference solutions of the three-dimensional tidal equations, calculations of inviscid steady/unsteady flows, three-level finite-difference methods for simulating advection in flows, and sharp monotonic resolution of dicontinuities without clipping of narrow extrema.

  7. Structure-selection techniques applied to continuous-time nonlinear models

    Science.gov (United States)

    Aguirre, Luis A.; Freitas, Ubiratan S.; Letellier, Christophe; Maquet, Jean

    2001-10-01

    This paper addresses the problem of choosing the multinomials that should compose a polynomial mathematical model starting from data. The mathematical representation used is a nonlinear differential equation of the polynomial type. Some approaches that have been used in the context of discrete-time models are adapted and applied to continuous-time models. Two examples are included to illustrate the main ideas. Models obtained with and without structure selection are compared using topological analysis. The main differences between structure-selected models and complete structure models are: (i) the former are more parsimonious than the latter, (ii) a predefined fixed-point configuration can be guaranteed for the former, and (iii) the former set of models produce attractors that are topologically closer to the original attractor than those produced by the complete structure models.

  8. A TOTAL MANUFACTURING SOLUTIONS TECHNIQUE TO SELECT APPROPRIATE IMPROVEMENT STRATEGY: CASE STUDY OF A FOOTWEAR FACTORY

    Directory of Open Access Journals (Sweden)

    Gezahegn Tesfaye

    2014-09-01

    Full Text Available The Government of Ethiopia is promoting the manufacturing sector to join the global market in a large scale. Due to its comparative advantages, the Ethiopian leather and leather products industry have been given due attention. To fully utilize such advantages, the country shifted its export items from hides/skins to footwear products. Nevertheless, the performance of the leather sector in general and footwear sub-sector in particular is far below the desired standards. The improvement strategies applied hitherto were mainly to tackle a small portion of their total problems. If the Ethiopian footwear companies have to become globally competitive, their entire business spectrum has to be assessed and appropriate improvement strategies must be selected. In this research, we used a Total manufacturing solutions (TMS technique to identify areas of improvement and improvement strategy of one of Ethiopian footwear companies. For this purpose, we conducted two surveys using structured questionnaire. The first survey was to test the TMS technique against the context of footwear industry. The result proved that the original TMS model can be used to measure the performance of footwear companies. The second survey was done to identify company's total problems, map its current position and select appropriate improvement strategy. The result revealed that the company has company-wide problems and its current position is a plodder. For plodders which have company-wide problems, the improvement strategy must include aggressive application of BPR; and the implementation of best practices to develop workers skills that encourages networking and promotion, a market-led manufacturing strategy, employee involvement and team work cultures. According to the findings of this research, we suggested that a BPR technique followed by a continuous improvement programme could be an appropriate improvement strategy for this company. The company requires long-term improvement

  9. Enrollment Forecasting with Double Exponential Smoothing: Two Methods for Objective Weight Factor Selection. AIR Forum 1980 Paper.

    Science.gov (United States)

    Gardner, Don E.

    The merits of double exponential smoothing are discussed relative to other types of pattern-based enrollment forecasting methods. The difficulties associated with selecting an appropriate weight factor are discussed, and their potential effects on prediction results are illustrated. Two methods for objectively selecting the "best" weight…

  10. Selection of bioindicators to detect lead pollution in Ebro delta microbial mats, using high-resolution microscopic techniques.

    Science.gov (United States)

    Maldonado, J; Solé, A; Puyen, Z M; Esteve, I

    2011-07-01

    Lead (Pb) is a metal that is non-essential to any metabolic process and, moreover, highly deleterious to life. In microbial mats - benthic stratified ecosystems - located in coastal areas, phototrophic microorganisms (algae and oxygenic phototrophic bacteria) are the primary producers and they are exposed to pollution by metals. In this paper we describe the search for bioindicators among phototrophic populations of Ebro delta microbial mats, using high-resolution microscopic techniques that we have optimized in previous studies. Confocal laser scanning microscopy coupled to a spectrofluorometric detector (CLSM-λscan) to determine in vivo sensitivity of different cyanobacteria to lead, and scanning electron microscopy (SEM) and transmission electron microscopy (TEM), both coupled to energy dispersive X-ray microanalysis (EDX), to determine the extra- and intracellular sequestration of this metal in cells, were the techniques used for this purpose. Oscillatoria sp. PCC 7515, Chroococcus sp. PCC 9106 and Spirulina sp. PCC 6313 tested in this paper could be considered bioindicators for lead pollution, because all of these microorganisms are indigenous, have high tolerance to high concentrations of lead and are able to accumulate this metal externally in extracellular polymeric substances (EPS) and intracellularly in polyphosphate (PP) inclusions. Experiments made with microcosms demonstrated that Phormidium-like and Lyngbya-like organisms selected themselves at the highest concentrations of lead assayed. In the present study it is shown that all cyanobacteria studied (both in culture and in microcosms) present PP inclusions in their cytoplasm and that these increase in number in lead polluted cultures and microcosms. We believe that the application of these microscopic techniques open up broad prospects for future studies of metal ecotoxicity. Copyright © 2011 Elsevier B.V. All rights reserved.

  11. Selection of bioindicators to detect lead pollution in Ebro delta microbial mats, using high-resolution microscopic techniques

    Energy Technology Data Exchange (ETDEWEB)

    Maldonado, J.; Sole, A.; Puyen, Z.M. [Departament de Genetica i Microbiologia, Facultat de Biociencies, Universitat Autonoma de Barcelona, Edifici C, Campus de la UAB, Cerdanyola del Valles, Bellaterra (Spain); Esteve, I., E-mail: isabel.esteve@uab.cat [Departament de Genetica i Microbiologia, Facultat de Biociencies, Universitat Autonoma de Barcelona, Edifici C, Campus de la UAB, Cerdanyola del Valles, Bellaterra (Spain)

    2011-07-15

    Lead (Pb) is a metal that is non-essential to any metabolic process and, moreover, highly deleterious to life. In microbial mats - benthic stratified ecosystems - located in coastal areas, phototrophic microorganisms (algae and oxygenic phototrophic bacteria) are the primary producers and they are exposed to pollution by metals. In this paper we describe the search for bioindicators among phototrophic populations of Ebro delta microbial mats, using high-resolution microscopic techniques that we have optimized in previous studies. Confocal laser scanning microscopy coupled to a spectrofluorometric detector (CLSM-{lambda}scan) to determine in vivo sensitivity of different cyanobacteria to lead, and scanning electron microscopy (SEM) and transmission electron microscopy (TEM), both coupled to energy dispersive X-ray microanalysis (EDX), to determine the extra- and intracellular sequestration of this metal in cells, were the techniques used for this purpose. Oscillatoria sp. PCC 7515, Chroococcus sp. PCC 9106 and Spirulina sp. PCC 6313 tested in this paper could be considered bioindicators for lead pollution, because all of these microorganisms are indigenous, have high tolerance to high concentrations of lead and are able to accumulate this metal externally in extracellular polymeric substances (EPS) and intracellularly in polyphosphate (PP) inclusions. Experiments made with microcosms demonstrated that Phormidium-like and Lyngbya-like organisms selected themselves at the highest concentrations of lead assayed. In the present study it is shown that all cyanobacteria studied (both in culture and in microcosms) present PP inclusions in their cytoplasm and that these increase in number in lead polluted cultures and microcosms. We believe that the application of these microscopic techniques open up broad prospects for future studies of metal ecotoxicity.

  12. Infinity in Logic and Computation: International Conference, ILC 2007, Cape Town, South Africa, November 3-5, 2007: Revised selected papers

    NARCIS (Netherlands)

    M. Archibald; V. Brattka; V. Goranko; B. Löwe

    2009-01-01

    Edited in collaboration with FoLLI, the Association of Logic, Language and Information, this volume constitutes a selection of papers presented at the Internatonal Conference on Infinity in Logic and Computation, ILC 2007, held in Cape Town, South Africa, in November 2007. The 7 revised papers prese

  13. Poly(methyl methacrylate) Composites with Size-selected Silver Nanoparticles Fabricated Using Cluster Beam Technique

    DEFF Research Database (Denmark)

    Muhammad, Hanif; Juluri, Raghavendra R.; Chirumamilla, Manohar

    2016-01-01

    based on cluster beam technique allowing the formation of monocrystalline size-selected silver nanoparticles with a ±5–7% precision of diameter and controllable embedment into poly (methyl methacrylate). It is shown that the soft-landed silver clusters preserve almost spherical shape with a slight......An embedment of metal nanoparticles of well-defined sizes in thin polymer films is of significant interest for a number of practical applications, in particular, for preparing materials with tunable plasmonic properties. In this article, we present a fabrication route for metal–polymer composites...... tendency to flattening upon impact. By controlling the polymer hardness (from viscous to soft state) prior the cluster deposition and annealing conditions after the deposition the degree of immersion of the nanoparticles into polymer can be tuned, thus, making it possible to create composites with either...

  14. A post-fabrication selective magnetic annealing technique in standard MEMS processes

    Science.gov (United States)

    Mohammadi, A.; Karmakar, N. C.; Yuce, M. R.

    2016-11-01

    A selective electrothermal magnetic annealing technique is introduced that provides programming capabilities for mechanical micro-resonators. In the proposed approach, the magnetic properties of resonators can be locally tuned in a post-fabrication batch-compatible process step. A prototype is implemented in a standard microfabrication process, where resonating ferromagnetic elements are suspended on top of a polysilicon resistive heater. The ferromagnetic elements consist of electroplated Nickel (Ni) with minor Iron (Fe) impurities. The electro-thermo-mechanical heating phenomenon is simulated for design purposes. The magnetization of micro-resonators with and without magnetic annealing is measured. The resulting magnetic property enhancement is illustrated by hysteresis (M-H) loop variations.

  15. Treatment of Prolapsing Hemorrhoids in HIV-Infected Patients with Tissue-Selecting Technique

    Directory of Open Access Journals (Sweden)

    Zhe Fan

    2017-01-01

    Full Text Available The aim of this retrospective study was to evaluate the outcome of a tissue-selecting therapy stapler (TST for prolapsing hemorrhoids in HIV-infected patients. Sixty-two patients with stage III-IV hemorrhoidal prolapse were treated with TST by a single surgeon between June and November 2014. The TST group comprised 32 patients (4 females, and the TST + HIV group comprised 30 HIV-infected patients (3 females. Age, gender, and preoperative examination as well as intraoperative and postoperative features were assessed. There was no marked difference in hemorrhoidal prolapse between the TST and HIV + TST groups, except for patient satisfaction at 12 months. TST is an effective and safe technique for treatment of prolapsing hemorrhoids in HIV-infected patients.

  16. Determination of Diffusion Coefficients of Selected Long Chain Hydrocarbons using Reversed- Flow Gas Chromatographic Technique

    Directory of Open Access Journals (Sweden)

    Khalisanni Khalid

    2011-01-01

    Full Text Available The reversed-flow gas chromatography (RF-GC technique was used to study the evaporation rate and estimating the diffusion coefficient of samples. The RF-GC system comprises of six-port valve, sampling and diffusion column, detector and modified commercial gas chromatography machine. Selected long chain of hydrocarbons (99.99% purity was used as samples. The solute (stationary phase were carried out by carrier gas (mobile phase to the detector. The data obtained from the RF-GC analysis were analysed by deriving the elution curve of the sample peaks using mathematical expression to find the diffusion coefficients values of respective liquids. The values obtained were compared with theoretical values to ensure the accuracy of readings. The interesting findings of the research showed the theoretical values of equilibrium at liquid-gas interphase lead to profound an agreement with the experimental evidence, which contributes for the references of future studies.

  17. Optimizing the collection of used paper from small businesses through GIS techniques: the Leganés case (Madrid, Spain).

    Science.gov (United States)

    López Alvarez, J V; Aguilar Larrucea, M; Fernández-Carrión Quero, S; Jiménez del Valle, A

    2008-01-01

    This article deals with a methodology for the design of routes for the "bin to bin" (BTB) collection of paper and cardboard waste (PCB) from small businesses, as well as with the new location and calculation of the number of containers needed in the streets for both commercial and non-commercial use due to the large amount of PCB deposited in them. This study was carried out in five shopping areas of the city of Leganés (Community of Madrid, Spain). One of the characteristics of the area is a high density of population and urban traffic. The tool used is the Geographical Information System (GIS-Arc-View). With it we can generate PCB points of high population density in commercial streets based on territorial analysis. We placed the special routes and the new container locations within a distance of 60 m of these collection points (CPT). The system calculates and optimizes six routes according to different urban restrictions. Finally, we provided service to 59% of the shops, which generate almost 82% of the PCB waste, using 160 min per day to collect 1027 kg of high quality PCB. If we compare the system with the system in place previously, we can conclude that the "bin to bin" (BTB) system improves the quality of the PCB in the containers, avoiding overflow and reducing the percentage of rejected material.

  18. Development of Experimental Setup of Metal Rapid Prototyping Machine using Selective Laser Sintering Technique

    Science.gov (United States)

    Patil, S. N.; Mulay, A. V.; Ahuja, B. B.

    2016-08-01

    Unlike in the traditional manufacturing processes, additive manufacturing as rapid prototyping, allows designers to produce parts that were previously considered too complex to make economically. The shift is taking place from plastic prototype to fully functional metallic parts by direct deposition of metallic powders as produced parts can be directly used for desired purpose. This work is directed towards the development of experimental setup of metal rapid prototyping machine using selective laser sintering and studies the various parameters, which plays important role in the metal rapid prototyping using SLS technique. The machine structure in mainly divided into three main categories namely, (1) Z-movement of bed and table, (2) X-Y movement arrangement for LASER movements and (3) feeder mechanism. Z-movement of bed is controlled by using lead screw, bevel gear pair and stepper motor, which will maintain the accuracy of layer thickness. X-Y movements are controlled using timing belt and stepper motors for precise movements of LASER source. Feeder mechanism is then developed to control uniformity of layer thickness metal powder. Simultaneously, the study is carried out for selection of material. Various types of metal powders can be used for metal RP as Single metal powder, mixture of two metals powder, and combination of metal and polymer powder. Conclusion leads to use of mixture of two metals powder to minimize the problems such as, balling effect and porosity. Developed System can be validated by conducting various experiments on manufactured part to check mechanical and metallurgical properties. After studying the results of these experiments, various process parameters as LASER properties (as power, speed etc.), and material properties (as grain size and structure etc.) will be optimized. This work is mainly focused on the design and development of cost effective experimental setup of metal rapid prototyping using SLS technique which will gives the feel of

  19. Transcortical selective amygdalohippocampectomy technique through the middle temporal gyrus revisited: An anatomical study laboratory investigation.

    Science.gov (United States)

    Bozkurt, Baran; da Silva Centeno, Ricardo; Chaddad-Neto, Feres; da Costa, Marcos Devanir Silva; Goiri, Marcelo Augusto Acosta; Karadag, Ali; Tugcu, Bekir; Ovalioglu, Talat Cem; Tanriover, Necmettin; Kaya, Serdar; Yagmurlu, Kaan; Grande, Andrew

    2016-12-01

    The anterior temporal lobectomy (ATL) and selective amygdalohippocampectomy (SelAH) have been used for surgical treatment of mesial temporal lobe epilepsy. We examined the comprehensive white matter tract anatomy of the temporal lobe to gain an insight into the trans-middle temporal gyrus, a lateral approach which has been commonly used. The transmiddle temporal gyrus approach was performed in a stepwise manner on cadaveric human heads to examine the traversing white matter pathways through it and the structures located in the temporal horn. We reviewed the literature to compare the trans-middle temporal gyrus approach with other SelAH techniques based on surgical outcomes. There does not appear to be a significant difference in seizure outcome between SelAH and ATL. However, the SelAH provides a better neuropsychological outcomes than the ATL in selected patients. Each SelAH approach has individual advantages and disadvantages. Based on our anatomical study, in the transcortical amygdalohippocampectomy technique through the middle temporal gyrus the white matter pathways to be encountered. In the temporal horn, the collateral eminence, hippocampus, lateral ventricular sulcus, choroidal fissure, inferior choroidal point, choroid plexus, fimbria of the fornix, and amygdala are exposed. The subpial dissection is performed along the lateral ventricular sulcus from the collateral eminence on lateral side and from the choroidal fissure on medial side by microdissector for en bloc resection of the hippocampus proper. The trans-middle temporal gyrus approach is commonly used in treatment of mesial temporal lobe epilepsy patients. A better anatomical and functional understanding of the structures of the temporal lobe is crucial for safer and more accurate surgery.

  20. Surface properties and corrosion behavior of Co-Cr alloy fabricated with selective laser melting technique.

    Science.gov (United States)

    Xin, Xian-zhen; Chen, Jie; Xiang, Nan; Wei, Bin

    2013-01-01

    We sought to study the corrosion behavior and surface properties of a commercial cobalt-chromium (Co-Cr) alloy which was fabricated with selective laser melting (SLM) technique. For this purpose, specimens were fabricated using different techniques, such as SLM system and casting methods. Surface hardness testing, microstructure observation, surface analysis using X-ray photoelectron spectroscopy (XPS) and electrochemical corrosion test were carried out to evaluate the corrosion properties and surface properties of the specimens. We found that microstructure of SLM specimens was more homogeneous than that of cast specimens. The mean surface hardness values of SLM and cast specimens were 458.3 and 384.8, respectively; SLM specimens showed higher values than cast ones in hardness. Both specimens exhibited no differences in their electrochemical corrosion properties in the artificial saliva through potentiodynamic curves and EIS, and no significant difference via XPS. Therefore, we concluded that within the scope of this study, SLM-fabricated restorations revealed good surface properties, such as proper hardness, homogeneous microstructure, and also showed sufficient corrosion resistance which could meet the needs of dental clinics.

  1. Selective cerebro-myocardial perfusion in complex congenital aortic arch pathology: a novel technique.

    Science.gov (United States)

    De Rita, Fabrizio; Lucchese, Gianluca; Barozzi, Luca; Menon, Tiziano; Faggian, Giuseppe; Mazzucco, Alessandro; Luciani, Giovanni Battista

    2011-11-01

    Simultaneous cerebro-myocardial perfusion has been described in neonatal and infant arch surgery, suggesting a reduction in cardiac morbidity. Here reported is a novel technique for selective cerebral perfusion combined with controlled and independent myocardial perfusion during surgery for complex or recurrent aortic arch lesions. From April 2008 to April 2011, 10 patients with arch pathology underwent surgery (two hypoplastic left heart syndrome [HLHS], four recurrent arch obstruction, two aortic arch hypoplasia + ventricular septal defect [VSD], one single ventricle + transposition of the great arteries + arch hypoplasia, one interrupted aortic arch type B + VSD). Median age was 63 days (6 days-36 years) and median weight 4.0 kg (1.6-52). Via midline sternotomy, an arterial cannula (6 or 8 Fr for infants) was directly inserted into the innominate artery or through a polytetrafluoroethylene (PTFE) graft (for neonates cerebro-myocardial perfusion was 39 ± 18 min (17-69). Weaning from cardiopulmonary bypass was achieved without inotropic support in three and with low dose in seven patients. One patient required veno-arterial extracorporeal membrane oxygenation. Four patients, body weight cerebro-myocardial perfusion is feasible in patients with complex or recurrent aortic arch disease, starting from premature newborn less than 2.0 kg of body weight to adults. The technique is as safe as previously reported methods of cerebro-myocardial perfusion and possibly more versatile.

  2. An ssDNA library immobilized SELEX technique for selection of an aptamer against ractopamine.

    Science.gov (United States)

    Duan, Nuo; Gong, Wenhui; Wu, Shijia; Wang, Zhouping

    2017-04-08

    An improved SELEX technique was developed for selecting aptamers against ractopamine (RAC) by immobilizing ssDNA library on the magnetic beads. After sixteen selection rounds, a highly enriched ssDNA pool was sequenced and nine families were grouped according to their homology and secondary structures analysis. One representative aptamer candidate from each family was picked out for binding affinity identification by graphene oxide (GO) adsorption platform. The aptamer RAC-6 was demonstrated as the optimal aptamer with high specificity and dissociation constant (Kd) value of 54.22 ± 8.02 nM. To prove the potential application of aptamer RAC-6 in the quantitative determination of RAC, a fluorescent bioassay with aptamer RAC-6 was developed. The linear range for RAC was from 0.10 ng/mL to 100 ng/mL and the limit of detection was as low as 0.04 ng/mL. Furthermore, the method was validated for the analysis of RAC spiked real samples, and the recoveries were between 82.57% and 104.65%. Copyright © 2017 Elsevier B.V. All rights reserved.

  3. Demonstration of the vacuum drying technique on sludge from the paper and pulp industry; Demonstration av vakuumtorktekniken paa skogsindustriellt slam

    Energy Technology Data Exchange (ETDEWEB)

    Eklund, Anders [AaF-Energikonsult AB, Stockholm (Sweden)

    2003-10-01

    Previous studies have indicated that a cost effective drying of sludge from the paper and pulp mills can be done by the use of vacuum at a lower water temperature. The purpose was to erect a pilot plant and test different types of sludge. Therefore, advantages and problems with this method could be determined. This work has planned and erected a complete pilot plant for continuous drying of sludge and the pilot plant occupies a hard surface of 10x10 meters. A drum type dryer is in the centre of the pilot plant and it has been modified for lower pressures. Other vital components are: handling of vapours, vacuum pump, hot water generation and materials handling of the sludge, both in wet and dry condition. First, tests where carried out to verify theories and previous laboratory studies. These test successfully confirmed that difficult sludge types could effectively be dried at lower temperatures by the use of vacuum. Then, tests where carried out on 9 different sludges from 7 different mills. Average sample weight was about 170 kg or 250 litres. All sludge samples could successfully be dried but with different levels of complexity. For an easier comprehension of the handling and drying, the different sludges were organised into three classes: sludge with a clear resemblance of clay, sludge with a resemblance of mud or earth and finally, sludge with a majority of fibres. Fibre type sludges were easy to dry to a high degree of dryness. However, they also dusted easily and thus, fibres easily carried over into the condensate. Earth type sludge was in wet condition difficult to handle. The drying was more time consuming and the sludge formed small round balls during the drying. These balls slowed the drying process but they were eventually gradually reduced and a higher degree of drying could continue. Clay type sludges formed already in the handling round balls and during drying these balls formed a hard dry outer layer, which contained moisture inside the balls. By

  4. Demonstration of a Benchmarking Technique to Compare Graduate Education Level of Air Force Project Managers and Selected Benchmarking Partners

    Science.gov (United States)

    1994-09-01

    the 1,450th file. This 46 technique sampled files on a nonprobability representation basis; some files did not have a nonzero chance of being reviewed...04 ELECTE: 4 t- OF A DEMONSTRATION OF A BENCHMARKING * ’~ TECHNIQUE TO COMPARE GRADUATE EDUCATION LEVELS OF AIR FORCE PROJECT MANAGERS AND SELECTED...8217,- -AIR FORCE INSTITUTE OF TECHNOLOGY .Wright-Patterson Air Force Base, Ohio AFIT/GSM/LAS/94S-3 A DEMONSTRATION OF A BENCHMARKING TECHNIQUE TO COMPARE

  5. Economic Uncertainty, Parental Selection and the Criminal Activity of the "Children of the Wall." CEP Discussion Paper No. 1256

    Science.gov (United States)

    Chevalier, Arnaud; Marie, Olivier

    2014-01-01

    We study the link between parental selection and children criminality in a new context. After the fall of the Berlin Wall, East Germany experienced an unprecedented temporary drop in fertility driven by economic uncertainty. We exploit this natural experiment to estimate that the children from these (smaller) cohorts are 40 percent more likely to…

  6. Selection on Feed intake or Feed Efficiency: A Position Paper from gDMI Breeding Goal Discussions

    NARCIS (Netherlands)

    Veerkamp, R.F.; Pryce, J.; Spurlock, D.M.; Berry, D.P.; Coffey, M.; Lovendahl, P.; Linde, van der R.; Bryant, J.M.; Migliore, G.; Wang, Z.; Winters, M.; Krattenmacher, N.; Haas, de Y.

    2013-01-01

    The widespread use of genomic information in dairy cattle breeding programs has opened up the possibility to select for novel traits, especially for traits that are traditionally difficult to record in a progeny testing scheme. Feed intake and efficiency is such a difficult to measure trait. In Febr

  7. Regression Test-Selection Technique Using Component Model Based Modification: Code to Test Traceability

    Directory of Open Access Journals (Sweden)

    Ahmad A. Saifan

    2016-04-01

    Full Text Available Regression testing is a safeguarding procedure to validate and verify adapted software, and guarantee that no errors have emerged. However, regression testing is very costly when testers need to re-execute all the test cases against the modified software. This paper proposes a new approach in regression test selection domain. The approach is based on meta-models (test models and structured models to decrease the number of test cases to be used in the regression testing process. The approach has been evaluated using three Java applications. To measure the effectiveness of the proposed approach, we compare the results using the re-test to all approaches. The results have shown that our approach reduces the size of test suite without negative impact on the effectiveness of the fault detection.

  8. Frequency-dependent sexual selection with respect to offspring fitness returns is consistent with predictions from rock-paper-scissors dynamics in the European common lizard

    Directory of Open Access Journals (Sweden)

    Patrick S. Fitze

    2014-12-01

    Full Text Available Genetic polymorphism can be maintained over time by negative frequency-dependent (FD selection induced by Rock-paper-scissors (RPS social systems. RPS games produce cyclic dynamics, and have been suggested to exist in lizards, insects, isopods, plants, and bacteria. Sexual selection is predicted to accentuate the survival of the future progeny during negative FD survival selection. More specifically, females are predicted to select mates that produce progeny genotypes that exhibit highest survival during survival selection imposed by adult males. However, no empirical evidence demonstrates the existence of FD sexual selection with respect to fitness payoffs of genetic polymorphisms. Here we tested this prediction using the common lizard Zootoca vivipara, a species with three male color morphs (orange, white, yellow that exhibit morph frequency cycles. In a first step we tested the congruence of the morph frequency change with the predicted change in three independent populations, differing in male color morph frequency and state of the FD morph cycle. Thereafter we ran standardized sexual selection assays in which we excluded alternative mechanisms that potentially induce negative FD selection, and we quantified inter-sexual behavior. The patterns of sexual selection and the observed behavior were in line with context-dependent female mate choice and male behavior played a minor role. Moreover, the strength of the sexual selection was within the magnitude of selection required to produce the observed 3-4-year and 6-8 year morph frequency cycles at low and high altitudes, respectively. In summary, the study provides the first experimental evidence that underpins the crucial assumption of the RPS games suggested to exist in lizards, insects, isopods, and plants; namely, that sexual selection produces negative-FD selection. This indicates that sexual selection, in our study exert by females, might be a crucial driver of the maintenance of genetic

  9. A review of metaphase chromosome image selection techniques for automatic karyotype generation.

    Science.gov (United States)

    Arora, Tanvi; Dhir, Renu

    2016-08-01

    The karyotype is analyzed to detect the genetic abnormalities. It is generated by arranging the chromosomes after extracting them from the metaphase chromosome images. The chromosomes are non-rigid bodies that contain the genetic information of an individual. The metaphase chromosome image spread contains the chromosomes, but these chromosomes are not distinct bodies; they can either be individual chromosomes or be touching one another; they may be bent or even may be overlapping and thus forming a cluster of chromosomes. The extraction of chromosomes from these touching and overlapping chromosomes is a very tedious process. The segmentation of a random metaphase chromosome image may not give us correct and accurate results. Therefore, before taking up a metaphase chromosome image for analysis, it must be analyzed for the orientation of the chromosomes it contains. The various reported methods for metaphase chromosome image selection for automatic karyotype generation are compared in this paper. After analysis, it has been concluded that each metaphase chromosome image selection method has its advantages and disadvantages.

  10. Combustion diagnostics by nonintrusive methods; Thermophysics Conference, 18th, Montreal, Canada, June 1-3, 1983, Selected Papers

    Science.gov (United States)

    Mccay, T. D. (Editor); Roux, J. A. (Editor)

    1984-01-01

    The state of the art in coherent anti-Stokes Raman scattering (CARS) and laser-induced fluorescence (LIF) is outlined, and current diagnostic capabilities in particle and combustion diagnostics are demonstrated. The development and application of CARS to combustion systems is discussed, and the use of LIF for flow diagnostics is addressed. Nonintrusive particle diagnostics is treated, and a variety of nonintrusive techniques applied to combustion environments is considered.

  11. Changes in the nature of dissolved organics during pulp and paper mill wastewater treatment: a multivariate statistical study combining data from three analytical techniques.

    Science.gov (United States)

    Plant, Emma L; Smernik, Ronald J; van Leeuwen, John; Greenwood, Paul; Macdonald, Lynne M

    2014-03-01

    The paper-making process can produce large amounts of wastewater (WW) with high particulate and dissolved organic loads. Generally, in developed countries, stringent international regulations for environmental protection require pulp and paper mill WW to be treated to reduce the organic load prior to discharge into the receiving environment. This can be achieved by primary and secondary treatments involving both chemical and biological processes. These processes result in complex changes in the nature of the organic material, as some components are mineralised and others are transformed. In this study, changes in the nature of organics through different stages of secondary treatment of pulp and paper mill WW were followed using three advanced characterisation techniques: solid-state (13)C nuclear magnetic resonance (NMR) spectroscopy, pyrolysis-gas chromatography mass spectrometry (py-GCMS) and high-performance size-exclusion chromatography (HPSEC). Each technique provided a different perspective on the changes that occurred. To compare the different chemical perspectives in terms of the degree of similarity/difference between samples, we employed non-metric multidimensional scaling. Results indicate that NMR and HPSEC provided strongly correlated perspectives, with 86 % of the discrimination between the organic samples common to both techniques. Conversely, py-GCMS was found to provide a unique, and thus complementary, perspective.

  12. EDITORIAL: Theory of fusion plasmas: selected papers from the Joint Varenna-Lausanne International Workshop Theory of fusion plasmas: selected papers from the Joint Varenna-Lausanne International Workshop

    Science.gov (United States)

    Garbet, X.; Sauter, O.

    2011-05-01

    The 2010 edition of the joint Varenna-Lausanne workshop on the theory of fusion plasmas was undoubtedly a great success. The programme encompasses a wide variety of topics, namely turbulence, MHD, edge physics and RF wave heating. The present PPCF issue is a collection of 19 outstanding papers, which cover these topics. It follows the publication of 22 refereed contributed papers in Journal of Physics: Conference Series 2010 260. There is no doubt that the production of articles was both abundant and of high scientific quality. This is why the Varenna-Lausanne meeting takes an important place in the landscape of conferences on fusion. Indeed this is the ideal forum for exchanging ideas on theory and modelling, and for substantiating the best results obtained in our field. The tradition of the meeting is to provide a forum for numerical modelling activities. This custom was clearly respected given the large fraction of papers in this special issue which address this subject. This feature reflects the revolution we have been living through for some years with the fast growth of high-performance computers. It also appears that analytical theory is flourishing. This is important for bringing new ideas and guidance to numerical simulations. Finally, code validation and comparison to experiments are well represented. We believe that this is good news given the complexity of the non-linear physics that is at stake in fusion devices. Another subject of satisfaction was the presence of many young scientists at the meeting. The encounter between young researchers and senior scientists is certainly a strong point of the Varenna-Lausanne conference. In conclusion, we anticipate a great success for this special issue of PPCF and we hope that the readers will find therein ideas and inspiration.

  13. New directions in telecollaborative research and practice : Selected papers from the second conference on telecollaboration in higher education.

    NARCIS (Netherlands)

    Jager, Sake; Kurek, Malgorzata; O'Rourke, Breffni

    2016-01-01

    This collection of papers, consisting of 39 delegate contributions and three keynote articles from “New directions in telecollaborative research and practice: the second conference on telecollaboration in higher education” hosted by Trinity College Dublin in April 2016, offers a window on a rapidly

  14. Separated Families and Children Who Refuse Access to a Parent. Unit for Child Studies Selected Papers Number 33.

    Science.gov (United States)

    Renouf, Emilia

    On the whole, professionals agree that there is an advantage in both parents having access to the child or children after separation. This paper provides (1) an overview of the controversy over the value of such access; (2) a description of various contexts of access disputes and perspectives involved in the assessment of access situations; (3) a…

  15. Student Sorting and Bias in Value Added Estimation: Selection on Observables and Unobservables. NBER Working Paper No. 14666

    Science.gov (United States)

    Rothstein, Jesse

    2009-01-01

    Non-random assignment of students to teachers can bias value added estimates of teachers' causal effects. Rothstein (2008a, b) shows that typical value added models indicate large counter-factual effects of 5th grade teachers on students' 4th grade learning, indicating that classroom assignments are far from random. This paper quantifies the…

  16. Logic, language and meaning: 17th Amsterdam Colloquium, Amsterdam, the Netherlands, December 16-18, 2009: Revised selected papers

    NARCIS (Netherlands)

    Aloni, M.; Bastiaanse, H.; de Jager, T.; Schulz, K.

    2010-01-01

    This book contains the revised papers presented at the Amsterdam Colloquium 2009, held in Amsterdam, The Netherlands, in December 2009. The 41 refereed and revised contributions presented together with the revised abstracts of 5 invited talks are organized in five sections: the first section contain

  17. Freestanding and flexible graphene papers as bioelectrochemical cathode for selective and efficient CO2 conversion

    DEFF Research Database (Denmark)

    Aryal, Nabin; Halder, Arnab; Zhang, Minwei

    2017-01-01

    During microbial electrosynthesis (MES) driven CO2 reduction, cathode plays a vital role by donating electrons to microbe. Here, we exploited the advantage of reduced graphene oxide (RGO) paper asnovel cathode material to enhance electron transfer between the cathode and microbe, which in turn...

  18. PREFACE: Selected papers from the Fourth Annual q-bio Conference on Cellular Information Processing Selected papers from the Fourth Annual q-bio Conference on Cellular Information Processing

    Science.gov (United States)

    Nemenman, Ilya; Faeder, James R.; Hlavacek, William S.; Jiang, Yi; Wall, Michael E.; Zilman, Anton

    2011-10-01

    Summary This special issue consists of 11 original papers that elaborate on work presented at the Fourth Annual q-bio Conference on Cellular Information Processing, which was held on the campus of St John's College in Santa Fe, New Mexico, USA, 11-14 August 2010. Now in its fourth year, the q-bio conference has changed considerably over time. It is now well established and a major event in systems biology. The 2010 conference saw attendees from all continents (except Antarctica!) sharing novel results and participating in lively discussions at both the oral and poster sessions. The conference was oversubscribed and grew to 27 contributed talks, 16 poster spotlights and 137 contributed posters. We deliberately decreased the number of invited speakers to 21 to leave more space for contributed presentations, and the attendee feedback confirmed that the choice was a success. Although the q-bio conference has grown and matured, it has remained true to the original goal of being an intimate and dynamic event that brings together modeling, theory and quantitative experimentation for the study of cell regulation and information processing. Funded in part by a grant from NIGMS and by DOE funds through the Los Alamos National Laboratory Directed Research and Development program, the conference has continued to exhibit youth and vigor by attracting (and partially supporting) over 100 undergraduate, graduate and postdoctoral researchers. The associated q-bio summer school, which precedes the conference each year, further emphasizes the development of junior scientists and makes q-bio a singular event in its impact on the future of quantitative biology. In addition to an increased international presence, the conference has notably diversified its demographic representation within the USA, including increased participation from the southeastern corner of the country. One big change in the conference this year is our new publication partner, Physical Biology. Although we are very

  19. Esophagogastric pathology in morbid obese patient: preoperative diagnosis and influence in the selection of surgical technique

    Directory of Open Access Journals (Sweden)

    Sergio Estévez-Fernández

    2015-07-01

    Full Text Available Introduction: Given the difficulty in accessing to the excluded stomach after gastric bypass and the increase in gastroesophageal reflux after sleeve gastrectomy, it is justified to perform a preoperative fibrogastroscopy. The influence of the fibrogastroscopy (FGS findings in the therapeutic approach is analyzed. Patients and methods: A retrospective study of preoperative FGS findings is performed, from 04/06 to 12/12. The influence of the FGS results on the surgical technique selection, in the endoscopic or medical treatment and its relation to gastric fistula is analyzed by means of multivariate regression (confounding factors: Age, body mass index, arterial hypertension, diabetes mellitus, antiplatelet therapy, surgical technique (bariatric surgery, sleeve gastrectomy. Results: Three hundred thirty one patients are included: 32.6% biopsy of gastric lesion; 27% gastritis; 18.1% hiatal hernia; 3% metaplasia; 0.6% Barrett esophagus; 2.1% esophagitis; 0.3% dysplasia; 0.3 Schatzky's ring; 1.5% incompetent cardia; 2.4% duodenitis; 0.3% gastric erosions; 0.6% gastric xanthoma; 1.8%, gastric polyp; 1.6% duodenal ulcer; 0.6% papulo-erosive gastritis; 0.6% esophageal papilloma; 0.3% submucosal tumor. Helicobacter pylori+ 30.2% (triple therapy eradication in all patients. The FGS findings led to a variation in the surgical technique or to the completion of endoscopic treatment in 22.2% of cases. The gastric lesions did not influence the development of gastric fistula. Independent prognostic factors of fistula: Sleeve gastrectomy (7.9% vs. 2.7%; p = 0.02; OR: 1.38 IC95: 1.01-1.87 and the body mass index > 50 kg/m² (6.7% vs. 2.2%; p = 0.04; OR: 3.7 IC95: 1.12-12.4. Conclusions: The diagnosis of gastroesophageal disease through preoperative FGS motivated variations in the therapeutic approach in 52% of patients, so we consider essential to include the preoperative FGS in bariatric surgery.

  20. Effect of Planned Early Recommended Ambulation Technique on Selected Post caesarean Biophysiological Health Parameters

    Directory of Open Access Journals (Sweden)

    Jyoti V. Dube

    2014-01-01

    Full Text Available Background: Caesarean section has been a part of human culture since ancient times. It has been used effectively throughout the 20th century and among the major abdominal surgeries, it is the most common, oldest worldwide surgery performed in obstetrics. Despite the life saving advantages, there are several adverse consequences of caesarean delivery for a woman and to her household. The rate and risk of these complications increases due to the increasing incidence mainly in countries like India. The role of nurse midwife is to act in the best interest of patient and newborn and make the patient independent in carrying out the activities of daily living as soon as possible. This can lead to a faster recovery and shorter hospital stay. Also it can indirectly help in reducing the complications associated with prolonged bed rest and can improve the maternal newborn bonding. Aim and Objectives: The present study was done to evaluate the effect of planned early ambulation on selected biophysiological health parameters of post caesarean patients. Material and Methods: The study included total 500 study subjects, 250 in experimental and 250 in control group. Quasi experimental approach with multiple time series design was adopted for the study. The experimental group was given an early planned recommended ambulation technique starting from the day of surgery. This consisted of deep breathing exercise, cough exercise, leg exercise and early mobilization. Over and above, the routine general health care was given by the doctors and nurses. The control group received only by routine general care by doctors and nurses and mobilization on third post operative day as per strategy adopted by the hospital. The deep breathing exercises, coughing exercises and leg exercises were not given routinely and hence were not given to the control group. Post caesarean biophysiological parameters chart was used to assess the selected parameters for first five post operative

  1. The Quadrennial Review of Military Compensation (3rd). Staff Studies and Selected Supporting Papers. Volume 10. Total Compensation Setting

    Science.gov (United States)

    1977-01-01

    such an entitlement, service, or advantage may be classified as either a compensation item or a non-compensation item, but would not be called a...tax paid by civilians: (1) Internal Revenue Service (IRS) Average Tax Data. The IRS publishes annually a report called Statistics of Income...budget data was used because it was the most current at the time lac papers were written. This Staff Research Peper end the others con- tained in

  2. Selected papers from the 23rd MicroMechanics and Microsystems Europe Workshop (MME 2012) (Ilmenau, Germany, September 9-12, 2012)

    Science.gov (United States)

    Hoffmann, Martin

    2013-07-01

    In September 2012, the 23rd MicroMechanics Europe Workshop (MME) took place in Ilmenau, Germany. With about 120 participants from 20 countries and 76 accepted presentations, the workshop series turned out to be a successful platform for young scientists to present their work to our scientific community. Traditionally, the interaction is an important aspect of this workshop: while short presentations introduce the posters, an extended poster session allows intensive discussion which is quite useful to the participants. The discussion very often extends into the breaks and the evening events. It is also encouraging for them that the best presentations are selected and invited to submit a full paper to this journal. Thanks to the support of IOP Publishing, this next logical step to present work to the scientific world is made possible. In this issue, you can find the best papers that have been selected by a committee during the workshop taking the written workshop contribution, the poster and the presentation into account. Again, all areas of micromechanics from new technology developments up to systems integration were presented at the workshop at different levels of completion. The selected papers present those results which are almost complete. Nevertheless, it is nice to see that in some cases topics grow over the years from 'nice ideas' to realized system concepts. And although this is the 23rd workshop, it is clear that micromechanics is a topic that is not running short of new ideas. First, I would like to thank the authors of the selected papers for each of their individual excellent contributions. My gratitude also goes to my fellow members in the programme committee (Per Ohlckers, Martin Hill and Sami Franssila) for their cooperation in the selection of invited speakers and submitted papers, as well as the anonymous Journal of Micromechanics and Microengineering (JMM) reviewers for their careful selection of the final papers presented here. Last, but not

  3. Manufacturing of individual biodegradable bone substitute implants using selective laser melting technique.

    Science.gov (United States)

    Lindner, Markus; Hoeges, Simon; Meiners, Wilhelm; Wissenbach, Konrad; Smeets, Ralf; Telle, Rainer; Poprawe, Reinhart; Fischer, Horst

    2011-06-15

    The additive manufacturing technique selective laser melting (SLM) has been successfully proved to be suitable for applications in implant manufacturing. SLM is well known for metal parts and offers direct manufacturing of three-dimensional (3D) parts with high bulk density on the base of individual 3D data, including computer tomography models of anatomical structures. Furthermore, an interconnecting porous structure with defined and reproducible pore size can be integrated during the design of the 3D virtual model of the implant. The objective of this study was to develop the SLM processes for a biodegradable composite material made of β-tricalcium phosphate (β-TCP) and poly(D, L)-lactide (PDLLA). The development of a powder composite material (β-TCP/PDLLA) suitable for the SLM process was successfully performed. The microstructure of the manufactured samples exhibit a homogeneous arrangement of ceramic and polymer. The four-point bending strength was up to 23 MPa. The X-ray diffraction (XRD) analysis of the samples confirmed β-TCP as the only present crystalline phase and the gel permeations chromatography (GPC) analysis documented a degradation of the polymer caused by the laser process less than conventional manufacturing processes. We conclude that SLM presents a new possibility to manufacture individual biodegradable implants made of β-TCP/PDLLA.

  4. Phenotypic and Genetic Characterization of Circulating Tumor Cells by Combining Immunomagnetic Selection and FICTION Techniques

    Science.gov (United States)

    Campos, María; Prior, Celia; Warleta, Fernando; Zudaire, Isabel; Ruíz-Mora, Jesús; Catena, Raúl; Calvo, Alfonso; Gaforio, José J.

    2008-01-01

    The presence of circulating tumor cells (CTCs) in breast cancer patients has been proven to have clinical relevance. Cytogenetic characterization of these cells could have crucial relevance for targeted cancer therapies. We developed a method that combines an immunomagnetic selection of CTCs from peripheral blood with the fluorescence immunophenotyping and interphase cytogenetics as a tool for investigation of neoplasm (FICTION) technique. Briefly, peripheral blood (10 ml) from healthy donors was spiked with a predetermined number of human breast cancer cells. Nucleated cells were separated by double density gradient centrifugation of blood samples. Tumor cells (TCs) were immunomagnetically isolated with an anti-cytokeratin antibody and placed onto slides for FICTION analysis. For immunophenotyping and genetic characterization of TCs, a mixture of primary monoclonal anti-pancytokeratin antibodies was used, followed by fluorescent secondary antibodies, and finally hybridized with a TOP2A/HER-2/CEP17 multicolor probe. Our results show that TCs can be efficiently isolated from peripheral blood and characterized by FICTION. Because genetic amplification of TOP2A and ErbB2 (HER-2) in breast cancer correlates with response to anthracyclines and herceptin therapies, respectively, this novel methodology could be useful for a better classification of patients according to the genetic alterations of CTCs and for the application of targeted therapies. (J Histochem Cytochem 56:667–675, 2008) PMID:18413646

  5. Chemical characterization of selected high copper dental amalgams using XPS and XRD techniques

    Energy Technology Data Exchange (ETDEWEB)

    Talik, E. [A. Chelkowski Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice (Poland)]. E-mail: talik@us.edu.pl; Babiarz-Zdyb, R. [A. Chelkowski Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice (Poland); Dziedzic, A. [Medical University of Silesia, Department of Conservative Dentistry and Periodontology, Akademicki 17 Sqr., 41-209 Bytom (Poland)

    2005-08-02

    The study was carried out to analyze some dependencies between the composition of seven high copper dental amalgams and mercury release behavior, as well as oxygen reactivity of metallic elements. Chemical comparative analysis of selected dental amalgams was carried out using X-ray photoelectron spectroscopy (XPS) technique and X-ray diffraction (XRD) method. The X-ray powder diffraction measurements revealed two main phases for measured amalgams: {gamma}{sub 1}-(Ag{sub 2}Hg{sub 3}) and {eta}'-(Cu{sub 6}Sn{sub 5}). The amount of mercury obtained by the XPS method was lower than the value quoted in the manufacturer's literature, which suggested evaporation of mercury under the UHV conditions. A linear decrease of oxygen and carbon contamination with the growing amount of Cu and Ag was observed. The XPS analysis showed that a high Sn concentration caused less resistance to oxidation. Some of the amalgams contained some extra elements, such as Bi, In, and Zn. All samples contained lead in metallic state and oxides. The amount of Ag, Cu, Sn ingredients determines the main properties of high copper amalgams and plays an important role in mercury evaporation. High tin concentration combined with the presence of smaller amounts of silver and copper (high Sn/Ag ratio) may influence the increase of mercury vaporization.

  6. Remote Sensing Best Paper Award 2013

    OpenAIRE

    Prasad Thenkabail

    2013-01-01

    Remote Sensing has started to institute a “Best Paper” award to recognize the most outstanding papers in the area of remote sensing techniques, design and applications published in Remote Sensing. We are pleased to announce the first “Remote Sensing Best Paper Award” for 2013. Nominations were selected by the Editor-in-Chief and selected editorial board members from among all the papers published in 2009. Reviews and research papers were evaluated separately.

  7. Emerging technologies for sustainable irrigation – a tribute to the career of Terry Howell, Sr. Selected papers from the 2015 ASABE and IA irrigation symposium

    Science.gov (United States)

    This article is an introduction to the “Emerging Technologies in Sustainable Irrigation – A Tribute to the Career of Terry Howell, Sr.” Special Collection in this issue of Transactions ASABE and the next issue of Applied Engineering in Agriculture, consisting of 15 articles selected from 62 papers a...

  8. College and University Planning -- 1969. Selected Papers from Society for College and University Planning Annual Conference. (4th, Houston, Texas, August 17-20, 1969.)

    Science.gov (United States)

    Mayer, Frederick W., Ed.; Schmult, Carl V., Jr., Ed.

    Six major conference papers cover selected planning activities for eight institutions of higher education. Discussed are academic planning for the University of Houston; circulation, parking, and landscape planning for the University of California at Irvine; planning office organization and staffing at Harvard and Ohio State Universities; building…

  9. Educational Technology for the Clever Country. Selected Papers from the Conference of the Australian Society for Educational Technology (Adelaide, South Australia, Australia, October 1-3, 1992).

    Science.gov (United States)

    Hedberg, John G., Ed.; Steele, James, Ed.

    This proceeding includes the following 28 papers selected from the 1992 Conference of the Australian Society for Educational Technology: "Ecunet, Edith Cowan University's Video Conferencing Network: Two Years On" (Michael Grant); "Navigation Options in Interactive Multimedia" (John G. Hedberg & Barry Harper); "The…

  10. Implementation of Novel Technique for Selective Harmonic Elimination in Multilevel Inverters Based on ICA

    Directory of Open Access Journals (Sweden)

    Ali Ajami

    2013-01-01

    Full Text Available Eliminating the specific harmonics especially low-order harmonics of the output voltage of 9-level inverter using SHE-PWM control scheme is investigated. Harmonic minimization is the intricate optimization problems because the nonlinear transcendental equations have multiple local optima. Increasing the degrees of freedom in the suggested method means that the number of switching angles increases. The suggested method is able to eliminate high number of undesired harmonics. As the number of switching angles increases, using either traditional iterative techniques or resultant theory method gets useless. In this paper to overcome this problem the imperialist competitive algorithm (ICA is used. Also a DC-DC converter is used to enhance the SHE performance in the range for which the conventional SHE methods do not have any solution. Experimental and simulation results of a 9-level inverter show that the proposed method effectively minimizes a large number of particular harmonics so the total harmonics distortion of output voltage will be lower.

  11. Changes in selected biochemical indices resulting from various pre-sampling handling techniques in broilers.

    Science.gov (United States)

    Chloupek, Petr; Bedanova, Iveta; Chloupek, Jan; Vecerek, Vladimir

    2011-05-13

    Since it is not yet clear whether it is possible to satisfactorily avoid sampling-induced stress interference in poultry, more studies on the pattern of physiological response and detailed quantification of stress connected with the first few minutes of capture and pre-sampling handling in poultry are required. This study focused on detection of changes in the corticosterone level and concentrations of other selected biochemical parameters in broilers handled in two different manners during blood sampling (involving catching, carrying, restraint, and blood collection itself) that lasted for various time periods within the interval 30-180 seconds. Stress effects of pre-sampling handling were studied in a group (n = 144) of unsexed ROSS 308 broiler chickens aged 42 d. Handling (catching, carrying, restraint, and blood sampling itself) was carried out in a gentle (caught, held and carried carefully in an upright position) or rough (caught by the leg, held and carried with lack of care in inverted position) manner and lasted for 30 s, 60 s, 90 s, 120 s, 150 s, and 180 s. Plasma corticosterone, albumin, glucose, cholesterol, lactate, triglycerides and total protein were measured in order to assess the stress-induced changes to these biochemical indices following handling in the first few minutes of capture. Pre-sampling handling in a rough manner resulted in considerably higher plasma concentrations of all biochemical indices monitored when compared with gentle handling. Concentrations of plasma corticosterone after 150 and 180 s of handling were considerably higher (P technique. Concentrations of plasma lactate were also increased by prolonged handling duration. Handling for 90-180 seconds resulted in a highly significant elevation of lactate concentration in comparison with 30 s handling regardless of handling technique. Similarly to corticosterone concentrations, a strong positive correlation was found between plasma lactate and duration of pre-sampling handling

  12. Data Selection for Fast Projection Techniques Applied to Adaptive Nulling: A Comparative Study of Performance

    Science.gov (United States)

    1991-12-01

    point de vue d’annulation des brouilleurs, le dernier 6tant moins rapide mais donnant une meilleure annulation. En effet , ces algorithmes donnent un...techniques avec celui de la technique "sample matrix inversion ou SMI" pour trois scenarios diffdrents; ces trois derniers ddmontrent les effets du nombre de...eigenvector analysis, such as the MUSIC technique [2], are effective for both interference suppression and spectral estimation. These techniques yield

  13. Advances in flowing afterglow and selected-ion flow tube techniques

    Science.gov (United States)

    Squires, Robert R.

    1992-09-01

    New developments in flowing afterglow and selected-ion flow tube (SIFT) techniques are briefly reviewed. Particular emphasis is given to the new chemical and physical information that can be obtained with use of the tandem flowing afterglow-triple quadrupole apparatus developed in the author's laboratory. Several outstanding recent achievements in the design and utilization of flowing afterglow and SIFT instruments in other laboratories are briefly highlighted that illustrate the power and flexibility of flow-tube-based methods. These include isotope tracer experiments with the tandem flowing afterglow-SIFT instrument in Boulder, studies of large molecular cluster ions with the variable temperature facility at Penn State, and gas-phase metal ion reactions with the laser ablation/fast flow reactor in Madison. Recent applications of the flowing afterglow-triple quadrupole instrument in our laboratory have made use of collision-induced dissociation (CID) as a tool for synthesizing novel ions and for obtaining new thermo-chemical information from threshold energy measurements. Collision-induced decar☐ylation of organic car☐ylate ions provides access to a variety of unusual and highly basic carbanions that cannot be generated with conventional ion sources. The formation and properties of saturated alkyl ions and studies of gas-phase reactions of the methyl anion are briefly described. We have developed a new method for carrying out "preparative CID" in a flowing afterglow with use of a mini-drift tube; some recent applications of this new ion source are presented. Measurement of CID thresholds for simple cleavage reactions of thermalized ions can provide accurate measures of bond strengths, gas-phase acidities and basicities, and heats of formation for ions and reactive neutral species. Applications of this approach in the thermochemical characterization of carbenes, benzynes and biradicals are described. Future prospects for the continued development of flow

  14. Foreword for the special issue of selected papers from the 1st ECML/PKDD Workshop on Privacy and Security issues in Data Mining and Machine Learning

    Directory of Open Access Journals (Sweden)

    Aris Gkoulalas-Divanis

    2011-12-01

    together scientists and practitioners who conduct research on privacy and security issues in data mining and machine learning to discuss the most recent advances in these research areas, identify open problem domains and propose possible solutions. The workshop was organized along four core subjects: (a data privacy and security issues, (b theoretical aspects of machine learning for security applications, (c privacy-preserving data mining, machine learning and applications, and (d security applications of machine learning. The present special issue contains three extended papers that have been selected among the papers presented at PSDML 2010 focusing mainly on the privacy aspects of data mining and machine learning. The first paper by Manas A. Pathak and Bhiksha Raj is titled 'Efficient Protocols for Principal Eigenvector Computation over Private Data'. It presents an efficient secure multiparty computation protocol for computing the principal eigenvector of a collection of data matrices that belong to semi-honest parties, coordinated by a semi-honest arbitrator. The protocol is augmented with randomization, data padding and oblivious transfer to conceal the information which the parties can learn from the intermediate results. The authors provide an analysis of correctness, security and efficiency of the protocol together with experimental results from a prototype implementation. The second paper by Henrik Grosskreutz, Benedikt Lemmen and Stefan Ruping is titled 'Secure Distributed Subgroup Discovery in Horizontally Partitioned Data'. The paper studies the problem of subgroup discovery and presents new secure protocols which support distributed subgroup discovery on horizontally partitioned data. The authors analyze the properties of their top-1 subgroup discovery protocol and prove that it leaks only little information, namely the size of the database and the share of positive records. They also report experimental results which demonstrate the feasibility of the

  15. A survey paper on Ant Colony Optimization Routing algorithm for selecting Multiple Feasible Paths for Packet Switched Networks

    Directory of Open Access Journals (Sweden)

    Meenakshi R Patel

    2012-03-01

    Full Text Available ACO algorithms for datagram networks was given by Di Caro Dorigo, in year 1996. Basic mechanisms in typical ACO routing algorithms is Ant-like agents are proactively generated at the nodes to find/check paths toward assigned destinations Ants move hop-by-hop according to a exploratory routing policy based on the local routing .After reaching their destination, ants retrace their path and update nodes routing information according to the quality of the path. Routing information is statistical estimates of the time-to-go to the destination maintained in pheromone arrays. Data are probabilistically spread over the paths according to their estimated quality as stored in the pheromone variables. AntNet algorithms may cause the network congestion and stagnation as the routing table converges. In this paper we perform a survey on modified AntNet routing algorithm using Multiple Ant-Colony Optimization. Multiple ant colonies with different pheromone updating mechanism have different searching traits. By leveraging this feature, much of work is done by designing a set of adaptive rules to facilitate the collaboration between these colonies. This approach can balance the diversity and convergence of solutions generated by different ant colonies and also overcome the problem of Stagnation.

  16. 折纸造型工艺构成技术在女装中的应用%Application of paper folding and molding technique to women's dress

    Institute of Scientific and Technical Information of China (English)

    邹平; 马宁

    2012-01-01

    Paper folding and molding technique has changed the construction mode and shaping elements of convenitional garments, bringing about an unique design style which is fine, elegant, and lively. Since paper folding and molding give people an impression of rigid and complex, it is rather difficult to be used for clothing. However, we can fully use the paper folding and molding technique to expand the space for women's dress designing and making. Having extended the nature and characteristics of paper folding and molding, the paper puts forward its molding technigues, such as sector folding, curved surface folding, pucker surface folding, geometric 3 -dimentional folding, repeated folding, flower imitation folding, bionic folding and so on, along with their use in women's dress. The paper offers certain reference for the design and making of women's dress based on paper folding and molding.%折纸造型改变了传统服装的结构模式与形态要素,形成了细致、优雅、活泼的独特设计风格.由于折纸造型给人生硬、复杂的感觉,实现比较复杂,较难应用于服装,但可以充分利用折纸造型工艺构成技术拓展女装制作及设计空间.通过阐述折纸造型性质特点,提出折纸造型工艺构成技术,如扇形折叠、曲面折叠、折面折叠、几何型立体折叠、重复折叠、仿花造型折叠、仿生动物造型折叠等,并在女装设计中应用,使之对折纸造型类女装的设计、制作有一定的参考.

  17. Non-invasive scanning ion-selective electrode technique and its applications to the research of higher plants

    Institute of Scientific and Technical Information of China (English)

    Sun Tong; Xu Yue; Li Peng; Yu Shangguan; Yin Liping

    2007-01-01

    The process of various ions and molecules getting into and out of cells is critical for plant survival. The non-invasive scanning ion-selective electrode technique (SIET) is a non-invasive method to obtain the information of ions/molecules across membranes in plant. This technique can measure the absolute concentration of ions and molecules, and also their fluxes and directions of movement.The samples to be analyzed can be a single cell, a piece of tissue, a whole organ and even an intact seedling. This article reviews the recent progress made in plant physiology by using this technique and discusses its potentials in future studies on plant physiology.

  18. Exact and Direct Modeling Technique for Rotor-Bearing Systems with Arbitrary Selected Degrees-of-Freedom

    Directory of Open Access Journals (Sweden)

    Shilin Chen

    1994-01-01

    Full Text Available An exact and direct modeling technique is proposed for modeling of rotor-bearing systems with arbitrary selected degrees-of-freedom. This technique is based on the combination of the transfer and dynamic stiffness matrices. The technique differs from the usual combination methods in that the global dynamic stiffness matrix for the system or the subsystem is obtained directly by rearranging the corresponding global transfer matrix. Therefore, the dimension of the global dynamic stiffness matrix is independent of the number of the elements or the substructures. In order to show the simplicity and efficiency of the method, two numerical examples are given.

  19. Changes in selected parameters of swimming technique in the back crawl and the front crawl in young novice swimmers.

    Science.gov (United States)

    Jerszyński, Damian; Antosiak-Cyrak, Katarzyna; Habiera, Małgorzata; Wochna, Krystian; Rostkowska, Elżbieta

    2013-01-01

    The study aimed to examine changes in selected angular characteristics and duration of the stroke cycle in the back crawl and the front crawl in children learning to swim. Nine boys and two girls, aged 8-13 years, performed seven consecutive swimming tests. The children's movement technique was recorded with the use of three video cameras. The studied parameters included the angle of incidence between the trunk long axis and the waterline, elbow angle, shoulders roll, stroke cycle duration and stroke length. The results illustrate the development of swimming technique in youth swimmers. The results of the present study indicate the variability and phasing of learning of swimming technique by children.

  20. Foreword for the special issue of selected papers from the 7th EDBT/ICDT Workshop on Privacy and Anonymity in Information Society (PAIS 2014

    Directory of Open Access Journals (Sweden)

    Traian Marius Truta

    2015-04-01

    Full Text Available The seventh Workshop on Privacy and Anonymity in Information Society (PAIS 2014 was held in conjunction with the International Conference on Extending Database Technology (EDBT and International Conference on Database Theory (ICDT in Athens, Greece. The PAIS 2014 workshop provided an open yet focused platform for researchers and practitioners from fields such as computer science, statistics, healthcare informatics, and law to discuss and present current research challenges and advances in data privacy and anonymity research. The present special issue contains three extended papers that have been selected as the best three papers presented at PAIS 2014 workshop.

  1. Characterisation of PDO olive oil Chianti Classico by non-selective (UV-visible, NIR and MIR spectroscopy) and selective (fatty acid composition) analytical techniques

    Energy Technology Data Exchange (ETDEWEB)

    Casale, M., E-mail: monica@dictfa.unige.it [Universita degli Studi di Genova, Department of Chemistry and Food and Pharmaceutical Technologies, Via Brigata Salerno 13, I-16147, Genoa (Italy); Oliveri, P.; Casolino, C. [Universita degli Studi di Genova, Department of Chemistry and Food and Pharmaceutical Technologies, Via Brigata Salerno 13, I-16147, Genoa (Italy); Sinelli, N. [Universita degli Studi di Milano, Department of Food Science and Technology, Via Celoria, 2 - I-20133 Milan (Italy); Zunin, P.; Armanino, C.; Forina, M.; Lanteri, S. [Universita degli Studi di Genova, Department of Chemistry and Food and Pharmaceutical Technologies, Via Brigata Salerno 13, I-16147, Genoa (Italy)

    2012-01-27

    Highlights: Black-Right-Pointing-Pointer Characterisation of the Italian PDO extra virgin olive oil Chianti Classico. Black-Right-Pointing-Pointer Comparison between non-selective (UV-vis, NIR and MIR spectroscopy) and selective (fatty acid composition) analytical techniques. Black-Right-Pointing-Pointer Synergy among spectroscopic techniques, by the fusion of the respective spectra. Black-Right-Pointing-Pointer Prediction of the content of oleic and linoleic acids in the olive oils. - Abstract: An authentication study of the Italian PDO (protected designation of origin) extra virgin olive oil Chianti Classico was performed; UV-visible (UV-vis), Near-Infrared (NIR) and Mid-Infrared (MIR) spectroscopies were applied to a set of samples representative of the whole Chianti Classico production area. The non-selective signals (fingerprints) provided by the three spectroscopic techniques were utilised both individually and jointly, after fusion of the respective profile vectors, in order to build a model for the Chianti Classico PDO olive oil. Moreover, these results were compared with those obtained by the gas chromatographic determination of the fatty acids composition. In order to characterise the olive oils produced in the Chianti Classico PDO area, UNEQ (unequal class models) and SIMCA (soft independent modelling of class analogy) were employed both on the MIR, NIR and UV-vis spectra, individually and jointly, and on the fatty acid composition. Finally, PLS (partial least square) regression was applied on the UV-vis, NIR and MIR spectra, in order to predict the content of oleic and linoleic acids in the extra virgin olive oils. UNEQ, SIMCA and PLS were performed after selection of the relevant predictors, in order to increase the efficiency of both classification and regression models. The non-selective information obtained from UV-vis, NIR and MIR spectroscopy allowed to build reliable models for checking the authenticity of the Italian PDO extra virgin olive oil

  2. Determination and evaluation of effective criteria to location selection the optimal for establishing fluting paper mills from agricultural residues of Mazandaran province

    Directory of Open Access Journals (Sweden)

    Abdollah barimani

    2013-11-01

    Full Text Available Location selection for factory competitiveness in the market place plays an important role and should be chosen so that will leads achievement of the strategic advantages compared with other competitors. The objective of this study was determination of the effective criteria for decision making to select the most suitable location for establishing a fluting paper mills from agricultural residues. For this purpose, effective criteria were divided into five major groups: Material and Product, Facilities and limitations of regional (infrastructure, Technical and Human, Economical, Rules & Regulations as well as 33 sub-criteria, after preliminary investigation, preparatory observation, and an interview with some of the paper producers and relevant experts. A hierarchy was designed based on five major groups of criteria and then the priority rates of obtained criteria and sub-criteria were determined by Analytical Hierarchy Process (AHP after compiling expert's opinions via questionnaire. Results have shown that among 33 determined effective criteria in location selection of fluting paper mills from agricultural residues , the sub-criteria of Supply residual amount, Ensure the supply of residual, Cost purchasing of raw material, Cost of transporting raw material have the highest priorities, respectively

  3. Differential Cyclic Voltammetry - a Novel Technique for Selective and Simultaneous Detection using Redox Cycling Based Sensors

    NARCIS (Netherlands)

    Odijk, M.; Wiedemair, J.; Megen, M.J.J; Olthuis, W.; Berg, van den A.

    2010-01-01

    Redox cycling (RC) is an effect that is used to amplify electrochemical signals. However, traditional techniques such as cyclic voltammetry (CV) do not provide clear insight for a mixture of multiple redox couples while RC is applied. Thus, we have developed a new measurement technique which deliver

  4. Differential Cyclic Voltammetry - a Novel Technique for Selective and Simultaneous Detection using Redox Cycling Based Sensors

    NARCIS (Netherlands)

    Odijk, Mathieu; Wiedemair, Justyna; van Megen, M.J.J.; Olthuis, Wouter; van den Berg, Albert

    2010-01-01

    Redox cycling (RC) is an effect that is used to amplify electrochemical signals. However, traditional techniques such as cyclic voltammetry (CV) do not provide clear insight for a mixture of multiple redox couples while RC is applied. Thus, we have developed a new measurement technique which

  5. Application of the Fuzzy Comprehensive Assessment Technique to Optimal Selection of Pipeline Design Alternative

    Institute of Scientific and Technical Information of China (English)

    ChuFeixue; ChuYanfan; LiuXiumin

    2005-01-01

    Regarding the influencing factors in an optimal selection of pipeline design alternative as fuzzy variables with different weights, a fuzzy comprehensive assessment was applied to an optimal selection of the design alternative. Giving the Lanzhou-Chengdu pipeline as an example to explain the process, the result shows that this method is acceptable.

  6. Comparison of Feature Selection Techniques in Machine Learning for Anatomical Brain MRI in Dementia.

    Science.gov (United States)

    Tohka, Jussi; Moradi, Elaheh; Huttunen, Heikki

    2016-07-01

    We present a comparative split-half resampling analysis of various data driven feature selection and classification methods for the whole brain voxel-based classification analysis of anatomical magnetic resonance images. We compared support vector machines (SVMs), with or without filter based feature selection, several embedded feature selection methods and stability selection. While comparisons of the accuracy of various classification methods have been reported previously, the variability of the out-of-training sample classification accuracy and the set of selected features due to independent training and test sets have not been previously addressed in a brain imaging context. We studied two classification problems: 1) Alzheimer's disease (AD) vs. normal control (NC) and 2) mild cognitive impairment (MCI) vs. NC classification. In AD vs. NC classification, the variability in the test accuracy due to the subject sample did not vary between different methods and exceeded the variability due to different classifiers. In MCI vs. NC classification, particularly with a large training set, embedded feature selection methods outperformed SVM-based ones with the difference in the test accuracy exceeding the test accuracy variability due to the subject sample. The filter and embedded methods produced divergent feature patterns for MCI vs. NC classification that suggests the utility of the embedded feature selection for this problem when linked with the good generalization performance. The stability of the feature sets was strongly correlated with the number of features selected, weakly correlated with the stability of classification accuracy, and uncorrelated with the average classification accuracy.

  7. Pacific Visions: Finding, Selecting, and Using Resources for Your Libraries, Archives, and Museums. Selected Papers from PIALA 2009, Pacific Islands Association of Libraries, Archives, and Museums Annual Conference (19th, Pohnpei, Federated States of Micronesia, November 16-21, 2009)

    Science.gov (United States)

    Drake, Paul B., Ed.

    2011-01-01

    This publication follows the tradition of publishing selected papers from Pacific Islands Association of Libraries, Archives and Museums (PIALA) annual conferences. This 19th annual conference was held in Pohnpei, Federated States of Micronesia, November 16-21, 2009. The volume begins with a listing of the members of the PIALA 2009 Planning…

  8. Rapid Isolation of the Trichoderma Strain with Higher Degrading Ability of a Filter Paper and Superior Proliferation Characteristics Using Avicel Plates and the Double-Layer Selection Medium

    Science.gov (United States)

    Toyama, Hideo; Nakano, Megumi; Satake, Yuuki; Toyama, Nobuo

    The cost of cellulase is still a problem for bioethanol production. As the cellulase of Trichoderma reesei is applicable for producing ethanol from cellulosic materials, the cellulase productivity of this fungus should be increased. Therefore, we attempted to develop a system to isolate the strain with higher degrading ability of a filter paper and superior proliferation characteristics among the conidia treated with the mitotic arrester, colchicine. When green mature conidia of T. reesei RUT C-30 were swollen, autopolyploidized, and incubated in the double-layer selection medium containing Avicel, colonies appeared on the surface earlier than the original strain. When such colonies and the original colony were incubated on the Avicel plates, strain B5, one of the colonies derived from the colchicinetreated conidia, showed superior proliferation characteristics. Moreover, when strain B5 and the original strain were compared in the filter paper degrading ability and the cellulose hydrolyzing activity, strain B5 was also superior to the original strain. It was suspected that superior proliferation characteristics of strain B5 reflects higher filter paper degrading ability. Thus, we concluded that the Trichoderma strain with higher degrading ability of a filter paper and superior proliferation characteristics can be isolated using Avicel plates and the double-layer selection medium.

  9. Rapid isolation of the Trichoderma strain with higher degrading ability of a filter paper and superior proliferation characteristics using avicel plates and the double-layer selection medium.

    Science.gov (United States)

    Toyama, Hideo; Nakano, Megumi; Satake, Yuuki; Toyama, Nobuo

    2008-03-01

    The cost of cellulase is still a problem for bioethanol production. As the cellulase of Trichoderma reesei is applicable for producing ethanol from cellulosic materials, the cellulase productivity of this fungus should be increased. Therefore, we attempted to develop a system to isolate the strain with higher degrading ability of a filter paper and superior proliferation characteristics among the conidia treated with the mitotic arrester, colchicine. When green mature conidia of T. reesei RUT C-30 were swollen, autopolyploidized, and incubated in the double-layer selection medium containing Avicel, colonies appeared on the surface earlier than the original strain. When such colonies and the original colony were incubated on the Avicel plates, strain B5, one of the colonies derived from the colchicine-treated conidia, showed superior proliferation characteristics. Moreover, when strain B5 and the original strain were compared in the filter paper degrading ability and the cellulose hydrolyzing activity, strain B5 was also superior to the original strain. It was suspected that superior proliferation characteristics of strain B5 reflects higher filter paper degrading ability. Thus, we concluded that the Trichoderma strain with higher degrading ability of a filter paper and superior proliferation characteristics can be isolated using Avicel plates and the double-layer selection medium.

  10. Spray Drying as a Processing Technique for Syndiotactic Polystyrene to Powder Form for Part Manufacturing Through Selective Laser Sintering

    Science.gov (United States)

    Mys, N.; Verberckmoes, A.; Cardon, L.

    2016-11-01

    Selective laser sintering (SLS) is a rapidly expanding field of the three-dimensional printing concept. One stumbling block in the evolution of the technique is the limited range of materials available for processing with SLS making the application window small. This article aims at identifying syndiotactic polystyrene (sPS) as a promising material. sPS pellets were processed into powder form with a lab-scale spray dryer with vibrating nozzle. This technique is the focus of this scope as it almost eliminates the agglomeration phenomenon often encountered with the use of solution-based processing techniques. Microspheres obtained were characterized in shape and size by scanning electron microscopy and evaluation of the particle size distribution. The effect the processing technique imparts on the intrinsic properties of the material was examined by differential scanning calorimetry analysis.

  11. Effects of sampling techniques on physical parameters and concentrations of selected persistent organic pollutants in suspended matter.

    Science.gov (United States)

    Pohlert, Thorsten; Hillebrand, Gudrun; Breitung, Vera

    2011-06-01

    This study focusses on the effect of sampling techniques for suspended matter in stream water on subsequent particle-size distribution and concentrations of total organic carbon and selected persistent organic pollutants. The key questions are whether differences between the sampling techniques are due to the separation principle of the devices or due to the difference between time-proportional versus integral sampling. Several multivariate homogeneity tests were conducted on an extensive set of field-data that covers the period from 2002 to 2007, when up to three different sampling techniques were deployed in parallel at four monitoring stations of the River Rhine. The results indicate homogeneity for polychlorinated biphenyls, but significant effects due to the sampling techniques on particle-size, organic carbon and hexachlorobenzene. The effects can be amplified depending on the site characteristics of the monitoring stations.

  12. Spray Drying as a Processing Technique for Syndiotactic Polystyrene to Powder Form for Part Manufacturing Through Selective Laser Sintering

    Science.gov (United States)

    Mys, N.; Verberckmoes, A.; Cardon, L.

    2017-03-01

    Selective laser sintering (SLS) is a rapidly expanding field of the three-dimensional printing concept. One stumbling block in the evolution of the technique is the limited range of materials available for processing with SLS making the application window small. This article aims at identifying syndiotactic polystyrene (sPS) as a promising material. sPS pellets were processed into powder form with a lab-scale spray dryer with vibrating nozzle. This technique is the focus of this scope as it almost eliminates the agglomeration phenomenon often encountered with the use of solution-based processing techniques. Microspheres obtained were characterized in shape and size by scanning electron microscopy and evaluation of the particle size distribution. The effect the processing technique imparts on the intrinsic properties of the material was examined by differential scanning calorimetry analysis.

  13. Vertical mammaplasty associated with accelerated partial breast radiotherapy: how oncoplastic surgery techniques associated with modern techniques of radiotherapy can improve the aesthetic outcome in selected patients

    Energy Technology Data Exchange (ETDEWEB)

    Couto, Henrique Lima, E-mail: enriquecouto@hotmail.com [Santa Fe Women' s and Maternity Hospital, Belo Horizonte, MG (Brazil); Amorim, Washington Cancado; Guimaraes, Rodrigo [Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG (Brazil). Hospital Geral; Ramires, Leandro Cruz; Castilho, Marcus Simoes [Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG (Brazil). Fac. de Medicina; Dominguez, Lorena Lima Coto [Universidade Estacio de Sa (UNESA), Rio de Janeiro, EJ (Brazil)

    2014-07-15

    Breast cancer is the second most common type of cancer in the world, being the most common among women, responsible for 22% of new cases each year. It's surgical and radiation treatment evolved from radical procedures (Halsted radical mastectomy and total external breast radiotherapy) to less radical and more conservative procedures. With the use of modern oncoplastic surgery techniques and accelerated partial breast radiotherapy, selected patients can benefit with better aesthetic results, fewer side effects, and more comfortable and brief treatments. (author)

  14. Cervical selective dorsal rhizotomy for treating spasticity in upper limb neurosurgical way to neurosurgical technique

    Directory of Open Access Journals (Sweden)

    Yu Duan

    2015-03-01

    Full Text Available Selective dorsal rhizotomy is an effective method to reduce spasticity of the lower limbs. However, functional outcomes in the upper limb following selective dorsal rhizotomy at the cervical level have not been reported. Here we report the clinical course after selective dorsal rhizotomy at the cervical level in a patient with hemiplegic spasticity caused by brain injury. The selective dorsal rootlets at the cervical level were sectioned under electrophysiological monitoring. The patient was followed for 1 year to evaluate the outcome of surgery. The spasticity in the upper limb was reduced and the passive range of motion and function of movement improved. However, the effectiveness and the safety of operation should be studied further in clinical trials.

  15. Evaluation of Fat Suppression of Diffusion-weighted Imaging Using Section Select Gradient Reversal Technique on 3 T Breast MRI.

    Science.gov (United States)

    Takemori, Daichi; Kimura, Daisuke; Yamada, Eiji; Higashida, Mitsuji

    2016-07-01

    This study evaluates fat suppression of diffusion-weighted imaging (DWI) using section select gradient reversal (SSGR) technique in clinical images on 3 T breast MRI. A total of 20 patients with breast cancer were examined at a Philips Ingenia 3 T MRI. We acquired DWI with SPAIR, SSGR-SPAIR, STIR, and SSGR-STIR. We evaluated contrast between the fat region and lesion, the coefficient of variance (CV) of the fat region and the apparent diffusion coefficient (ADC) of normal breast tissue and lesion. The contrast between the fat region and lesion was improved with SSGR technique. The CV of the fattest region did not have any significant difference in SPAIR technique (p>0.05), but it was significantly decreased in the STIR technique using SSGR technique (p<0.05). Positive correlation was observed in ADC value between SPAIR and other fat suppression techniques (SSGR-SPAIR, STIR, SSGR-STIR). DWI using SSGR technique was suggested to be effective on 3 T breast MRI.

  16. Accelerated partial breast irradiation with brachytherapy: patient selection and technique considerations

    Directory of Open Access Journals (Sweden)

    Trifiletti DM

    2015-07-01

    Full Text Available Daniel M Trifiletti,1 Kara D Romano,1 Shayna L Showalter,2 Kelli A Reardon,1 Bruce Libby,1 Timothy N Showalter11Department of Radiation Oncology, 2Division of Surgical Oncology, Department of Surgery, University of Virginia School of Medicine, Charlottesville, VA, USAAbstract: Accelerated partial breast irradiation (APBI through breast brachytherapy is a relatively recent development in breast radiotherapy that has gained international favor because of its reduction in treatment duration and normal tissue irradiation while maintaining favorable cancer-specific and cosmetic outcomes. Despite the fact that several large national trials have not reported final results yet, many providers are currently offering APBI to select patients and APBI is listed as a treatment option for selecting patients in the National Comprehensive Cancer Network guidelines. Multiple consensus guidelines exist in selecting patients for APBI, some with conflicting recommendations. In this review, the existing patient selection guidelines are reported, compared, and critiqued, grouping them in helpful subcategories. Unique patient and technical selection factors for APBI with brachytherapy are explored.Keywords: breast cancer, APBI, breast brachytherapy

  17. Judgments in the selection of path generation techniques: a meta-analytic approach

    DEFF Research Database (Denmark)

    Prato, Carlo Giacomo

    2012-01-01

    objective judgments for effective route choice set generation. Initially, path generation techniques are implemented within a synthetic network to generate possible subjective choice sets considered by travelers. Next, “true model estimates” and “postulated predicted routes” are assumed from the simulation...... synthesizing the effect of judgments on the implementation of path generation techniques, since a large number of models generate a large amount of results that are otherwise difficult to summarize and to process. Meta-analysis estimates suggest that modelers should apply stochastic approaches...

  18. Selective reflection technique as a probe to monitor the growth of a metallic thin film on dielectric surfaces

    CERN Document Server

    Martins, Weliton Soares; Chevrollier, Martine; de Silans, Thierry Passerat

    2013-01-01

    Controlling thin film formation is technologically challenging. The knowledge of physical properties of the film and of the atoms in the surface vicinity can help improve control over the film growth. We investigate the use of the well-established selective reflection technique to probe the thin film during its growth, simultaneously monitoring the film thickness, the atom-surface van der Waals interaction and the vapor properties in the surface vicinity.

  19. Differential prioritization between relevance and redundancy in correlation-based feature selection techniques for multiclass gene expression data

    Directory of Open Access Journals (Sweden)

    Chetty Madhu

    2006-06-01

    Full Text Available Abstract Background Due to the large number of genes in a typical microarray dataset, feature selection looks set to play an important role in reducing noise and computational cost in gene expression-based tissue classification while improving accuracy at the same time. Surprisingly, this does not appear to be the case for all multiclass microarray datasets. The reason is that many feature selection techniques applied on microarray datasets are either rank-based and hence do not take into account correlations between genes, or are wrapper-based, which require high computational cost, and often yield difficult-to-reproduce results. In studies where correlations between genes are considered, attempts to establish the merit of the proposed techniques are hampered by evaluation procedures which are less than meticulous, resulting in overly optimistic estimates of accuracy. Results We present two realistically evaluated correlation-based feature selection techniques which incorporate, in addition to the two existing criteria involved in forming a predictor set (relevance and redundancy, a third criterion called the degree of differential prioritization (DDP. DDP functions as a parameter to strike the balance between relevance and redundancy, providing our techniques with the novel ability to differentially prioritize the optimization of relevance against redundancy (and vice versa. This ability proves useful in producing optimal classification accuracy while using reasonably small predictor set sizes for nine well-known multiclass microarray datasets. Conclusion For multiclass microarray datasets, especially the GCM and NCI60 datasets, DDP enables our filter-based techniques to produce accuracies better than those reported in previous studies which employed similarly realistic evaluation procedures.

  20. A NOVEL TECHNIQUE FOR MULTIPLE FAULTS AND THEIR LOCATIONS DETECTION AND START ELECTRODE SELECTION IN MICROFLUIDIC DIGITAL BIOCHIP

    Directory of Open Access Journals (Sweden)

    MUKTA MAJUMDER

    2013-10-01

    Full Text Available A device, that is used for biomedical operation or safety-critical applications like point-of-care health assessment, massive parallel DNA analysis, automated drug discovery, air-quality monitoring and food-safety testing, must have the attributes like reliability, dependability and correctness. As the biochips are used for these purposes; therefore, these devices must be fault free all the time. Naturally before using these chips, they must be well tested. We are proposing a novel technique that can detect multiple faults, locate the fault positions within the biochip, as well as calculate the traversal time if the biochip is fault free. The proposed technique also highlights a new idea how to select the appropriate base node or pseudo source (start electrode. The main idea of the proposed technique is to form multiple loops with the neighboring electrode arrays and then test each loop by traversing test droplet to check whether there is any fault. If a fault is detected then the proposed technique also locates it by backtracking the test droplet. In case, no fault is detected, the biochip is fault free then the proposed technique also calculates the time to traverse the chip. The result suggests that the proposed technique is efficient and shows significant improvement to calculate fault-free biochip traversal time over existing method.

  1. COMPARISON OF MEASUREMENT TECHNIQUES FOR QUANTIFYING SELECTED ORGANIC EMISSIONS FROM KEROSENE SPACE HEATERS

    Science.gov (United States)

    The report goes results of (1) a comparison the hood and chamber techniques for quantifying pollutant emission rates from unvented combustion appliances, and (2) an assessment of the semivolatile and nonvolatile organic-compound emissions from unvented kerosene space heaters. In ...

  2. Pelvic Fixation in Adult and Pediatric Spine Surgery: Historical Perspective, Indications, and Techniques: AAOS Exhibit Selection.

    Science.gov (United States)

    Jain, Amit; Hassanzadeh, Hamid; Strike, Sophia A; Menga, Emmanuel N; Sponseller, Paul D; Kebaish, Khaled M

    2015-09-16

    Achieving solid osseous fusion across the lumbosacral junction has historically been, and continues to be, a challenge in spine surgery. Robust pelvic fixation plays an integral role in achieving this goal. The goals of this review are to describe the history of and indications for spinopelvic fixation, examine conventional spinopelvic fixation techniques, and review the newer S2-alar-iliac technique and its outcomes in adult and pediatric patients with spinal deformity. Since the introduction of Harrington rods in the 1960s, spinal instrumentation has evolved substantially. Indications for spinopelvic fixation as a means to achieve lumbosacral arthrodesis include a long arthrodesis (five or more vertebral levels) or use of three-column osteotomies in the lower thoracic or lumbar spine, surgical treatment of high-grade spondylolisthesis, and correction of lumbar deformity and pelvic obliquity. A variety of techniques have been described over the years, including Galveston iliac rods, Jackson intrasacral rods, the Kostuik transiliac bar, iliac screws, and S2-alar-iliac screws. Modern iliac screws and S2-alar-iliac screws are associated with relatively low rates of pseudarthrosis. S2-alar-iliac screws have the advantages of less implant prominence and inline placement with proximal spinal anchors. Collectively, these techniques provide powerful methods for obtaining control of the pelvis in facilitating lumbosacral arthrodesis.

  3. Selection of micro-fabrication techniques on stainless steel sheet for skin friction

    NARCIS (Netherlands)

    Zhang, Sheng; Zeng, Xiangqiong; Matthews, David Thomas Allan; Igartua, A.; Rodriguez Vidal, E.; Contreras Fortes, J.; Saenz de Viteri, V.; Pagano, F.; Wadman, B.; Wiklund, E.D.; van der Heide, Emile

    2016-01-01

    This review gives a concise introduction to the state-of-art techniques used for surface texturing, e.g., wet etching, plasma etching, laser surface texturing (LST), 3D printing, etc. In order to fabricate deterministic textures with the desired geometric structures and scales, the innovative textur

  4. Using the Nominal Group Technique to Select the Most Appropriate Topics for Postgraduate Research Students' Seminars

    Science.gov (United States)

    Jones, Sandra C.

    2004-01-01

    In 2003, the Faculty of Health & Behavioural Sciences at our university offered a series of postgraduate research seminars. The series of seminars, selected by a three-person faculty team, received a mixed reaction--some seminars attracted a large proportion of the students whereas others were poorly attended. Thus, it was decided to continue…

  5. The dilemma of selecting suitable proximal carious lesions in primary molars for restoration using ART technique

    NARCIS (Netherlands)

    Kemoli, A.M.; van Amerongen, W.E.

    2011-01-01

    OBJECTIVE: To determine the examiner's accuracy in selecting proximal carious lesions in primary molars for restoration using the atraumatic restorative treatment (ART) approach. BASIC RESEARCH DESIGN: Intervention study. CLINICAL SETTING AND PARTICIPANTS: A total of 804 six to eight year-olds from

  6. The dilemma of selecting suitable proximal carious lesions in primary molars for restoration using ART technique

    NARCIS (Netherlands)

    Kemoli, A.M.; van Amerongen, W.E.

    2011-01-01

    OBJECTIVE: To determine the examiner's accuracy in selecting proximal carious lesions in primary molars for restoration using the atraumatic restorative treatment (ART) approach. BASIC RESEARCH DESIGN: Intervention study. CLINICAL SETTING AND PARTICIPANTS: A total of 804 six to eight year-olds from

  7. Preparation of protein imprinted materials by hierarchical imprinting techniques and application in selective depletion of albumin from human serum

    Science.gov (United States)

    Liu, Jinxiang; Deng, Qiliang; Tao, Dingyin; Yang, Kaiguang; Zhang, Lihua; Liang, Zhen; Zhang, Yukui

    2014-06-01

    Hierarchical imprinting was developed to prepare the protein imprinted materials, as the artificial antibody, for the selective depletion of HSA from the human serum proteome. Porcine serum albumin (PSA) was employed as the dummy template for the fabrication of the recognition sites. To demonstrate the advantages of the hierarchical imprinting, molecularly imprinted polymers prepared by hierarchical imprinting technique (h-MIPs) were compared with those obtained by bulk imprinting (b-MIPs), in terms of the binding capacity, adsorption kinetics, selectivity and synthesis reproducibility. The binding capacity of h-MIPs could reach 12 mg g-1. And saturation binding could be reached in less than 20 min for the h-MIPs. In the protein mixture, h-MIPs exhibit excellent selectivity for PSA, with imprinting factors as about 3.6, much higher than those for non-template proteins. For the proteomic application, the identified protein group number in serum treated by h-MIPs was increased to 422, which is 21% higher than that obtained from the original serum, meanwhile the identified protein group number for the Albumin Removal kit was only 376. The results demonstrate that protein imprinted polymers prepared by hierarchical imprinting technique, might become the artificial antibodies for the selective depletion of high abundance proteins in proteome study.

  8. Simple and rapid analytical method for detection of amino acids in blood using blood spot on filter paper, fast-GC/MS and isotope dilution technique.

    Science.gov (United States)

    Kawana, Shuichi; Nakagawa, Katsuhiro; Hasegawa, Yuki; Yamaguchi, Seiji

    2010-11-15

    A simple and rapid method for quantitative analysis of amino acids, including valine (Val), leucine (Leu), isoleucine (Ile), methionine (Met) and phenylalanine (Phe), in whole blood has been developed using GC/MS. In this method, whole blood was collected using a filter paper technique, and a 1/8 in. blood spot punch was used for sample preparation. Amino acids were extracted from the sample, and the extracts were purified using cation-exchange resins. The isotope dilution method using ²H₈-Val, ²H₃-Leu, ²H₃-Met and ²H₅-Phe as internal standards was applied. Following propyl chloroformate derivatization, the derivatives were analyzed using fast-GC/MS. The extraction recoveries using these techniques ranged from 69.8% to 87.9%, and analysis time for each sample was approximately 26 min. Calibration curves at concentrations from 0.0 to 1666.7 μmol/l for Val, Leu, Ile and Phe and from 0.0 to 333.3 μmol/l for Met showed good linearity with regression coefficients=1. The method detection limits for Val, Leu, Ile, Met and Phe were 24.2, 16.7, 8.7, 1.5 and 12.9 μmol/l, respectively. This method was applied to blood spot samples obtained from patients with phenylketonuria (PKU), maple syrup urine disease (MSUD), hypermethionine and neonatal intrahepatic cholestasis caused by citrin deficiency (NICCD), and the analysis results showed that the concentrations of amino acids that characterize these diseases were increased. These results indicate that this method provides a simple and rapid procedure for precise determination of amino acids in whole blood. Copyright © 2010 Elsevier B.V. All rights reserved.

  9. Metrizamide lumbar epidurography with Seldinger technique through the sacral notch and selective nerve root injection

    Energy Technology Data Exchange (ETDEWEB)

    Hatten, H.P. Jr.

    1981-01-01

    Lumbar epidurography serves as an important radiographic procedure in the evaluation of patients with equivocal myelography and confusing or non-diagnostic physical findings. It is particularly valuable in patients with a wide ventral epidural space secondary to previous surgery, arachnoiditis or on a congenital basis. Several techniques and various contrast agents have been employed for the procedure. A pure Seldinger technique with a caudal approach through the sacral hiatus and injection of metrizamide gives excellent visualization of the epidural space and nerve root sleeves. The proper concentration of metrizamide is crucial for optimal results. Lateral, AP, and AP oblique radiographs, occasionally combined with lateral, complex motion tomography, clearly demonstrate the root sleeves and ventral epidural space. CT scanning, with present technology, does not provide the necessary detail for evaluating the epidural space.

  10. Assembly of Oriented Virus Arrays by Chemo-Selective Ligation Methods and Nanolithography Techniques

    Energy Technology Data Exchange (ETDEWEB)

    Camarero, J A; Cheung, C L; Lin, T; Johnson, J E; Weeks, B L; Noy, A; De Yoreo, J J

    2002-12-02

    The present work describes our ongoing efforts towards the creation of nano-scaled ordered arrays of protein/virus covalently attached to site-specific chemical linkers patterned by different nanolithograpy techniques. We will present a new and efficient solid-phase approach for the synthesis of chemically modified long alkyl-thiols. These compounds can be used to introduce chemoselective reacting groups onto gold and silicon-based surfaces. Furthermore, these modified thiols have been used to create nanometric patterns by using different nanolithography techniques. We will show that these patterns can react chemoselectively with proteins and/or virus which have been chemically or recombinantly modified to contain complementary chemical groups at specific positions thus resulting in the oriented attachment of the protein or virus to the surface.

  11. RESPONSE OF SELECTED LOCAL PLANTAIN CULTIVARS TO PIBS (PLANTS ISSUS DE BOURGEONS SECONDAIRES TECHNIQUE

    Directory of Open Access Journals (Sweden)

    Beloved Mensah DZOMEKU

    2014-12-01

    Full Text Available One major constraint to plantain production has been inadequate healthy planting materials at the time of planting. Several technologies for multiplying healthy planting materials exist but could not meet farmers’ demand. A study was conducted to assess the performance of various landraces plantain to plants issus de bourgeons secondaires (PIBS technique. Five cultivars of Musa sapientum (Apantu (False Horn, Asamienu (True Horn, Oniaba (intermediate French plantain and FHIA-21 (tetraploid hybrid plantain were tested to determine their response to the PIBS technique. Sword suckers of each cultivar with weight of between 0.2-0.5 kg were prepared and buried in fine sawdust in a humidity chamber built using transparent polyethylene sheets. Results at harvest showed that removal of rooted sprouts started three weeks after planting and every week thereafter for eight weeks. The intermediate French plantain cultivar (Oniaba produced the least average number (about 20 of healthy planting. Apantu (False Horn produced an average of about 75 healthy planting materials. The hybrid FHIA-21 on the other hand generated an average of about 85 healthy planting materials. Asamienu (True Horn produced the highest healthy seedlings of about 90 healthy planting materials. The results revealed that the leaf scar carries a primary bud at the intersection of each leaf sheath and several eyes along the entire length of the leaf sheath which could not have developed into suckers. However, with this technique the eyes could be activated to sprout as healthy planting materials. The technique proved as an efficient method of multiplying healthy planting materials for plantain and could thus be recommended for adoption not only by peasant farmers but also to others who could become commercial seed producers. But there will be a need for certification guidelines for seed growing systems.

  12. Survey of Techniques for Deep Web Source Selection and Surfacing the Hidden Web Content

    OpenAIRE

    Khushboo Khurana; M.B. Chandak

    2016-01-01

    Large and continuously growing dynamic web content has created new opportunities for large-scale data analysis in the recent years. There is huge amount of information that the traditional web crawlers cannot access, since they use link analysis technique by which only the surface web can be accessed. Traditional search engine crawlers require the web pages to be linked to other pages via hyperlinks causing large amount of web data to be hidden from the crawlers. Enormous data is available in...

  13. Survey of Techniques for Deep Web Source Selection and Surfacing the Hidden Web Content

    OpenAIRE

    Khushboo Khurana; M B Chandak

    2016-01-01

    Large and continuously growing dynamic web content has created new opportunities for large-scale data analysis in the recent years. There is huge amount of information that the traditional web crawlers cannot access, since they use link analysis technique by which only the surface web can be accessed. Traditional search engine crawlers require the web pages to be linked to other pages via hyperlinks causing large amount of web data to be hidden from the crawlers. Enormous data is available in...

  14. Extended voice-sparing surgery in selected pyriform sinus carcinoma: Techniques and outcomes

    OpenAIRE

    Hamoir, Marc; Fievez, Juliette; Schmitz, Sandra; Velasco, Dorris; Lengelé, Benoît

    2013-01-01

    BACKGROUND: Organ-preservation approaches are frequently favored in the treatment of advanced pyriform sinus carcinoma. In selected cases, use of free flaps allows voice-sparing surgery. METHODS:Thirteen patients underwent conservative extended laryngopharyngectomy. In 11 patients, the resection included the supraglottic larynx, whereas the whole hemilarynx was resected in 2. Reconstruction was achieved with a radial forearm free flap with the palmaris longus tendon. In hemilarynx resection, ...

  15. Supplier Selection in the Thermal Tourism Enterprises with Using Multi Criteria Decision Making Techniques

    OpenAIRE

    2015-01-01

    Turkey has many natural health resources and the interest in Thermal Tourism has increased. Thermal Tourism Enterprises serve their experienced medical staff, treatment methods and the curative springs for the purpose of care services. On the other hand, these enterprises are also the place to have both a rest and a good time. In this study, the supplier selection application is performed in the Thermal Tourism Enterprise that offers a combination of services as health, recreation and enterta...

  16. Binary classification of chalcone derivatives with LDA or KNN based on their antileishmanial activity and molecular descriptors selected using the Successive Projections Algorithm feature-selection technique.

    Science.gov (United States)

    Goodarzi, Mohammad; Saeys, Wouter; de Araujo, Mario Cesar Ugulino; Galvão, Roberto Kawakami Harrop; Vander Heyden, Yvan

    2014-01-23

    Chalcones are naturally occurring aromatic ketones, which consist of an α-, β-unsaturated carbonyl system joining two aryl rings. These compounds are reported to exhibit several pharmacological activities, including antiparasitic, antibacterial, antifungal, anticancer, immunomodulatory, nitric oxide inhibition and anti-inflammatory effects. In the present work, a Quantitative Structure-Activity Relationship (QSAR) study is carried out to classify chalcone derivatives with respect to their antileishmanial activity (active/inactive) on the basis of molecular descriptors. For this purpose, two techniques to select descriptors are employed, the Successive Projections Algorithm (SPA) and the Genetic Algorithm (GA). The selected descriptors are initially employed to build Linear Discriminant Analysis (LDA) models. An additional investigation is then carried out to determine whether the results can be improved by using a non-parametric classification technique (One Nearest Neighbour, 1NN). In a case study involving 100 chalcone derivatives, the 1NN models were found to provide better rates of correct classification than LDA, both in the training and test sets. The best result was achieved by a SPA-1NN model with six molecular descriptors, which provided correct classification rates of 97% and 84% for the training and test sets, respectively.

  17. Targeted Curing of All Lysogenic Bacteriophage from Streptococcus pyogenes Using a Novel Counter-selection Technique.

    Science.gov (United States)

    Euler, Chad W; Juncosa, Barbara; Ryan, Patricia A; Deutsch, Douglas R; McShan, W Michael; Fischetti, Vincent A

    2016-01-01

    Streptococcus pyogenes is a human commensal and a bacterial pathogen responsible for a wide variety of human diseases differing in symptoms, severity, and tissue tropism. The completed genome sequences of >37 strains of S. pyogenes, representing diverse disease-causing serotypes, have been published. The greatest genetic variation among these strains is attributed to numerous integrated prophage and prophage-like elements, encoding several virulence factors. A comparison of isogenic strains, differing in prophage content, would reveal the effects of these elements on streptococcal pathogenesis. However, curing strains of prophage is often difficult and sometimes unattainable. We have applied a novel counter-selection approach to identify rare S. pyogenes mutants spontaneously cured of select prophage. To accomplish this, we first inserted a two-gene cassette containing a gene for kanamycin resistance (KanR) and the rpsL wild-type gene, responsible for dominant streptomycin sensitivity (SmS), into a targeted prophage on the chromosome of a streptomycin resistant (SmR) mutant of S. pyogenes strain SF370. We then applied antibiotic counter-selection for the re-establishment of the KanS/SmR phenotype to select for isolates cured of targeted prophage. This methodology allowed for the precise selection of spontaneous phage loss and restoration of the natural phage attB attachment sites for all four prophage-like elements in this S. pyogenes chromosome. Overall, 15 mutants were constructed that encompassed every permutation of phage knockout as well as a mutant strain, named CEM1ΔΦ, completely cured of all bacteriophage elements (a ~10% loss of the genome); the only reported S. pyogenes strain free of prophage-like elements. We compared CEM1ΔΦ to the WT strain by analyzing differences in secreted DNase activity, as well as lytic and lysogenic potential. These mutant strains should allow for the direct examination of bacteriophage relationships within S. pyogenes and

  18. Rotational state selection and orientation of diatomic and asymmetric top molecules via the electric hexapole technique

    Science.gov (United States)

    Hain, Toby Douglas

    2000-11-01

    The hexapole rotational state selection of 2∏ Ω diatomic and asymmetric top molecules is investigated. Classical molecular trajectory simulations are shown to reproduce experimental focusing spectra in these large classes of molecules. Deviations from linear Stark effects introduce significant effects in the focusing behavior of both the 2∏ and asymmetric rotor species. The laboratory frame distributions of orientations of the state-selected molecules are quantified by quantum mechanical orientational probability distribution functions (opdf's). Chapter 1 introduces preliminary data for the hexapole focusing of hydroxyl radicals and shows the deviation of the structured focusing curves from the first-order Stark effect. In Chapter 2, the focusing theory is developed for 2∏ diatomics, and the focusing spectra presented in Chapter 1 are analyzed using the theory. The Λ-doublet splitting is found to be the important parameter for simulating the measured focusing spectra. The high field limit opdf's are calculated, and highly anisotropic orientational distributions for the selected states are shown. Chapter 3 shows the laboratory orientation of 2∏ molecules is tunable via the electric field strength of an orienting field for post- hexapole selected rotational states. A laser induced fluorescence experiment is detailed allowing experimental validation of the theoretical opdf's. Chapter 4 explores the scattering of hexapole selected OD rotational states with various target gases. Elastic scattering cross sections are reported for OD + M (M = He, Ar, H2O, CO2, NH3, and CH3F). Hexapole focusing and the subsequent orientation of asymmetric rotors are the subjects of Chapter 5. Matrix treatments are used to calculate the field-free and Stark energies exactly. Perturbation and intermediate Stark effect approximations are compared to the exact matrix method, yielding several general rules useful in analyzing and predicting experimental focusing spectra. The theory

  19. Targeted Curing of All Lysogenic Bacteriophage from Streptococcus pyogenes Using a Novel Counter-selection Technique.

    Directory of Open Access Journals (Sweden)

    Chad W Euler

    Full Text Available Streptococcus pyogenes is a human commensal and a bacterial pathogen responsible for a wide variety of human diseases differing in symptoms, severity, and tissue tropism. The completed genome sequences of >37 strains of S. pyogenes, representing diverse disease-causing serotypes, have been published. The greatest genetic variation among these strains is attributed to numerous integrated prophage and prophage-like elements, encoding several virulence factors. A comparison of isogenic strains, differing in prophage content, would reveal the effects of these elements on streptococcal pathogenesis. However, curing strains of prophage is often difficult and sometimes unattainable. We have applied a novel counter-selection approach to identify rare S. pyogenes mutants spontaneously cured of select prophage. To accomplish this, we first inserted a two-gene cassette containing a gene for kanamycin resistance (KanR and the rpsL wild-type gene, responsible for dominant streptomycin sensitivity (SmS, into a targeted prophage on the chromosome of a streptomycin resistant (SmR mutant of S. pyogenes strain SF370. We then applied antibiotic counter-selection for the re-establishment of the KanS/SmR phenotype to select for isolates cured of targeted prophage. This methodology allowed for the precise selection of spontaneous phage loss and restoration of the natural phage attB attachment sites for all four prophage-like elements in this S. pyogenes chromosome. Overall, 15 mutants were constructed that encompassed every permutation of phage knockout as well as a mutant strain, named CEM1ΔΦ, completely cured of all bacteriophage elements (a ~10% loss of the genome; the only reported S. pyogenes strain free of prophage-like elements. We compared CEM1ΔΦ to the WT strain by analyzing differences in secreted DNase activity, as well as lytic and lysogenic potential. These mutant strains should allow for the direct examination of bacteriophage relationships within S

  20. An improved SELEX technique for selection of DNA aptamers binding to M-type 11 of Streptococcus pyogenes.

    Science.gov (United States)

    Hamula, Camille L A; Peng, Hanyong; Wang, Zhixin; Tyrrell, Gregory J; Li, Xing-Fang; Le, X Chris

    2016-03-15

    Streptococcus pyogenes is a clinically important pathogen consisting of various serotypes determined by different M proteins expressed on the cell surface. The M type is therefore a useful marker to monitor the spread of invasive S. pyogenes in a population. Serotyping and nucleic acid amplification/sequencing methods for the identification of M types are laborious, inconsistent, and usually confined to reference laboratories. The primary objective of this work is to develop a technique that enables generation of aptamers binding to specific M-types of S. pyogenes. We describe here an in vitro technique that directly used live bacterial cells and the Systematic Evolution of Ligands by Exponential Enrichment (SELEX) strategy. Live S. pyogenes cells were incubated with DNA libraries consisting of 40-nucleotides randomized sequences. Those sequences that bound to the cells were separated, amplified using polymerase chain reaction (PCR), purified using gel electrophoresis, and served as the input DNA pool for the next round of SELEX selection. A specially designed forward primer containing extended polyA20/5Sp9 facilitated gel electrophoresis purification of ssDNA after PCR amplification. A counter-selection step using non-target cells was introduced to improve selectivity. DNA libraries of different starting sequence diversity (10(16) and 10(14)) were compared. Aptamer pools from each round of selection were tested for their binding to the target and non-target cells using flow cytometry. Selected aptamer pools were then cloned and sequenced. Individual aptamer sequences were screened on the basis of their binding to the 10 M-types that were used as targets. Aptamer pools obtained from SELEX rounds 5-8 showed high affinity to the target S. pyogenes cells. Tests against non-target Streptococcus bovis, Streptococcus pneumoniae, and Enterococcus species demonstrated selectivity of these aptamers for binding to S. pyogenes. Several aptamer sequences were found to bind

  1. An improved survivability prognosis of breast cancer by using sampling and feature selection technique to solve imbalanced patient classification data.

    Science.gov (United States)

    Wang, Kung-Jeng; Makond, Bunjira; Wang, Kung-Min

    2013-11-09

    Breast cancer is one of the most critical cancers and is a major cause of cancer death among women. It is essential to know the survivability of the patients in order to ease the decision making process regarding medical treatment and financial preparation. Recently, the breast cancer data sets have been imbalanced (i.e., the number of survival patients outnumbers the number of non-survival patients) whereas the standard classifiers are not applicable for the imbalanced data sets. The methods to improve survivability prognosis of breast cancer need for study. Two well-known five-year prognosis models/classifiers [i.e., logistic regression (LR) and decision tree (DT)] are constructed by combining synthetic minority over-sampling technique (SMOTE), cost-sensitive classifier technique (CSC), under-sampling, bagging, and boosting. The feature selection method is used to select relevant variables, while the pruning technique is applied to obtain low information-burden models. These methods are applied on data obtained from the Surveillance, Epidemiology, and End Results database. The improvements of survivability prognosis of breast cancer are investigated based on the experimental results. Experimental results confirm that the DT and LR models combined with SMOTE, CSC, and under-sampling generate higher predictive performance consecutively than the original ones. Most of the time, DT and LR models combined with SMOTE and CSC use less informative burden/features when a feature selection method and a pruning technique are applied. LR is found to have better statistical power than DT in predicting five-year survivability. CSC is superior to SMOTE, under-sampling, bagging, and boosting to improve the prognostic performance of DT and LR.

  2. Surgery for left ventricular aneurysm after myocardial infarction:techniques selection and results assessment

    Institute of Scientific and Technical Information of China (English)

    CHEN Xin; QIU Zhi-bing; XU Ming; LIU Le-le; JIANG Ying-shuo; WANG Li-ming

    2012-01-01

    Background The most appropriate surgical approach for patients with post-infarction left ventricular (LV) aneurysm remains undetermined.We compared the efficacy of the linear versus patch repair techniques,and investigated the mid-term changes of LV geometry and cardiac function,for repair of LV aneurysms.Methods We reviewed the records of 194 patients who had surgery for a post-infarction LV aneurysm between 1998 and 2010.Short-term and mid-term outcomes,including complications,cardiac function and mortality,were assessed.LV end-diastolic and systolic dimensions (LVEDD and LVESD),LV end-diastolic and end-systolic volume indexes (LVEDVI and LVESVI) and LV ejection fraction (LVEF) were measured on pre-operative and follow-up echocardiography.Results Overall in-hospital mortality was 4.12%,and major morbidity showed no significant differences between the two groups.Multivariate analysis identified preoperative left ventricular end diastolic pressure >20 mmHg,low cardiac output and aortic clamping time >2 hours as risk factors for early mortality.Follow-up revealed that LVEF improved from 37% pre-operation to 45% 12 months post-operation in the patch group (P=0.008),and from 44% pre-operation to 40% 12 months postoperation in the linear group (P=0.032).In contrast,the LVEDVI and LVESVI in the linear group were significantly reduced immediately after the operation,and increased again at follow-up.However,in the patch group,the LVEDVI and LVESVI were significantly reduced at follow-up.And there were significant differences in the correct value changes of LVEF and left ventricular remodeling between linear repair and patch groups.Conclusions Persistent reduction of LV dimensions after the patch repair procedure seems to be a procedure-related problem.The choice of the technique should be tailored on an individual basis and surgeon's preference.The patch remodeling technique results in a better LVEF improvement,further significant reductions in LV dimensions

  3. Use of the AIC with the EM algorithm: A demonstration of a probability model selection technique

    Energy Technology Data Exchange (ETDEWEB)

    Glosup, J.G.; Axelrod M.C. [Lawrence Livermore National Lab., CA (United States)

    1994-11-15

    The problem of discriminating between two potential probability models, a Gaussian distribution and a mixture of Gaussian distributions, is considered. The focus of our interest is a case where the models are potentially non-nested and the parameters of the mixture model are estimated through the EM algorithm. The AIC, which is frequently used as a criterion for discriminating between non-nested models, is modified to work with the EM algorithm and is shown to provide a model selection tool for this situation. A particular problem involving an infinite mixture distribution known as Middleton`s Class A model is used to demonstrate the effectiveness and limitations of this method.

  4. Forecasting macroeconomic variables using neural network models and three automated model selection techniques

    DEFF Research Database (Denmark)

    Kock, Anders Bredahl; Teräsvirta, Timo

    2016-01-01

    When forecasting with neural network models one faces several problems, all of which influence the accuracy of the forecasts. First, neural networks are often hard to estimate due to their highly nonlinear structure. To alleviate the problem, White (2006) presented a solution (Quick......Net) that converts the specification and nonlinear estimation problem into a linear model selection and estimation problem. We shall compare its performance to that of two other procedures building on the linearization idea: the Marginal Bridge Estimator and Autometrics. Second, one must decide whether forecasting...

  5. Characterisation of PDO olive oil Chianti Classico by non-selective (UV-visible, NIR and MIR spectroscopy) and selective (fatty acid composition) analytical techniques.

    Science.gov (United States)

    Casale, M; Oliveri, P; Casolino, C; Sinelli, N; Zunin, P; Armanino, C; Forina, M; Lanteri, S

    2012-01-27

    An authentication study of the Italian PDO (protected designation of origin) extra virgin olive oil Chianti Classico was performed; UV-visible (UV-vis), Near-Infrared (NIR) and Mid-Infrared (MIR) spectroscopies were applied to a set of samples representative of the whole Chianti Classico production area. The non-selective signals (fingerprints) provided by the three spectroscopic techniques were utilised both individually and jointly, after fusion of the respective profile vectors, in order to build a model for the Chianti Classico PDO olive oil. Moreover, these results were compared with those obtained by the gas chromatographic determination of the fatty acids composition. In order to characterise the olive oils produced in the Chianti Classico PDO area, UNEQ (unequal class models) and SIMCA (soft independent modelling of class analogy) were employed both on the MIR, NIR and UV-vis spectra, individually and jointly, and on the fatty acid composition. Finally, PLS (partial least square) regression was applied on the UV-vis, NIR and MIR spectra, in order to predict the content of oleic and linoleic acids in the extra virgin olive oils. UNEQ, SIMCA and PLS were performed after selection of the relevant predictors, in order to increase the efficiency of both classification and regression models. The non-selective information obtained from UV-vis, NIR and MIR spectroscopy allowed to build reliable models for checking the authenticity of the Italian PDO extra virgin olive oil Chianti Classico. Copyright © 2011 Elsevier B.V. All rights reserved.

  6. Quantitative Imaging of D-2-Hydroxyglutarate in Selected Histological Tissue Areas by a Novel Bioluminescence Technique.

    Science.gov (United States)

    Voelxen, Nadine F; Walenta, Stefan; Proescholdt, Martin; Dettmer, Katja; Pusch, Stefan; Mueller-Klieser, Wolfgang

    2016-01-01

    Patients with malignant gliomas have a poor prognosis with average survival of less than 1 year. Whereas in other tumor entities the characteristics of tumor metabolism are successfully used for therapeutic approaches, such developments are very rare in brain tumors, notably in gliomas. One metabolic feature characteristic of gliomas, in particular diffuse astrocytomas and oligodendroglial tumors, is the variable content of D-2-hydroxyglutarate (D2HG), a metabolite that was discovered first in this tumor entity. D2HG is generated in large amounts due to various "gain-of-function" mutations in the isocitrate dehydrogenases IDH1 and IDH2. Meanwhile, D2HG has been detected in several other tumor entities, including intrahepatic bile-duct cancer, chondrosarcoma, acute myeloid leukemia, and angioimmunoblastic T-cell lymphoma. D2HG is barely detectable in healthy tissue (bioluminescence assay for determining D2HG in sections of snap-frozen tissue. The assay was verified independently by photometric tests and liquid chromatography/mass spectrometry. The novel technique allows the microscopically resolved determination of D2HG in a concentration range of 0-10 μmol/g tissue (wet weight). In combination with the already established bioluminescence imaging techniques for ATP, glucose, pyruvate, and lactate, the novel D2HG assay enables a comparative characterization of the metabolic profile of individual tumors in a further dimension.

  7. Effect of Extraction Solvent/Technique on the Antioxidant Activity of Selected Medicinal Plant Extracts

    Directory of Open Access Journals (Sweden)

    Bushra Sultana

    2009-06-01

    Full Text Available Theeffects of four extracting solvents [absolute ethanol, absolute methanol, aqueous ethanol (ethanol: water, 80:20 v/v and aqueous methanol (methanol: water, 80:20 v/v] and two extraction techniques (shaking and reflux on the antioxidant activity of extracts of barks of Azadirachta indica, Acacia nilotica, Eugenia jambolana, Terminalia arjuna, leaves and roots of Moringa oleifera, fruit of Ficus religiosa,and leaves of Aloe barbadensis were investigated. The tested plant materials contained appreciable amounts of total phenolic contents (0.31-16.5 g GAE /100g DW, total flavonoid (2.63-8.66 g CE/100g DW; reducing power at 10 mg/mL extract concentration (1.36-2.91, DPPH. scavenging capacity (37.2-86.6%, and percent inhibition of linoleic acid (66.0-90.6%. Generally higher extract yields, phenolic contents and plant material antioxidant activity were obtained using aqueous organic solvents, as compared to the respective absolute organic solvents. Although higher extract yields were obtained by the refluxing extraction technique, in general higher amounts of total phenolic contents and better antioxidant activity were found in the extracts prepared using a shaker.

  8. Water solubility of selected C9-C18 alkanes using a slow-stir technique: Comparison to structure - property models.

    Science.gov (United States)

    Letinski, Daniel J; Parkerton, Thomas F; Redman, Aaron D; Connelly, Martin J; Peterson, Brian

    2016-05-01

    Aqueous solubility is a fundamental physical-chemical substance property that strongly influences the distribution, fate and effects of chemicals upon release into the environment. Experimental water solubility was determined for 18 selected C9-C18 normal, branched and cyclic alkanes. A slow-stir technique was applied to obviate emulsion formation, which historically has resulted in significant overestimation of the aqueous solubility of such hydrophobic liquid compounds. Sensitive GC-MS based methods coupled with contemporary sample extraction techniques were employed to enable reproducible analysis of low parts-per billion aqueous concentrations. Water solubility measurements for most of the compounds investigated, are reported for the first time expanding available data for branched and cyclic alkanes. Measured water solubilities spanned four orders of magnitude ranging from 0.3 μg/L to 250 μg/L. Good agreement was observed for selected alkanes tested in this work and reported in earlier literature demonstrating the robustness of the slow-stir water solubility technique. Comparisons of measured alkane water solubilities were also made with those predicted by commonly used quantitative structure-property relationship models (e.g. SPARC, EPIWIN, ACD/Labs). Correlations are also presented between alkane measured water solubilities and molecular size parameters (e.g. molar volume, solvent accessible molar volume) affirming a mechanistic description of empirical aqueous solubility results and prediction previously reported for a more limited set of alkanes.

  9. Improving Efficiency of Classification using PCA and Apriori based Attribute Selection Technique

    Directory of Open Access Journals (Sweden)

    K. Rajeswari

    2013-12-01

    Full Text Available The aim of this study is to select significant features that contribute for accuracy in classification. Data mining is a field where we find lots of data which can be useful or useless in any form available in Data Warehouse. Implementing classification on these huge, uneven, useless data sets with large number of features is just a waste of time degrading the efficiency of classification algorithms and hence the results are not much accurate. Hence we propose a system in which we first use PCA (Principal Component Analysis for selection of the attributes on which we perform Classification using Bayes theorem, Multi-Layer Perceptron, Decision tree J48 which indeed has given us better result than that of performing Classification on the huge complete data sets with all the attributes. Also association rule mining using traditional Apriori algorithm is experimented to find out sub set of features related to class label. The experiments are conducted using WEKA 3.6.0 Tool.

  10. [Maxillary Cancer with Metastasis to the Rouviere Nodes -- Complete Response to Chemoradiotherapy Using a Selective Intra-Arterial Infusion Technique].

    Science.gov (United States)

    Yamashiro, Keita; Heianna, Joichi; Azama, Kimei; Iraha, Yuko; Yamashiro, Tsuneo; Kinoshita, Ryo; Toita, Takafumi; Toyama, Masatomo; Agena, Shinya; Maeda, Hiroyuki; Suzuki, Mikio; Murayama, Sadayuki

    2016-02-01

    We report a case of advanced maxillary cancer with multiple lymph node metastases, including metastasis to the Rouviere nodes, which were successfully treated with chemoradiotherapy using a selective intra-arterial infusion technique.A 71-yearold man presented to our hospital with complaints of a staggering gait and epistaxis.He was diagnosed with maxillary cancer (squamous cell carcinoma)classified as T4a disease.Because multiple lymph node metastases were detected, including metastasis to the Rouviere nodes, radical surgical treatment was considered inadequate.Thus, the patient was treated with concurrent chemoradiotherapy with selective intra-arterial infusion of nedaplatin and docetaxel.After chemoradiotherapy, the maxillary cancer and lymph metastasis nearly resolved and the patient achieved a complete response.No additional surgery was needed, and the patient was discharged.We suggest that chemoradiotherapy using a selective intra-arterial infusion technique is a highly effective treatment option for patients with maxillary cancer and metastasis to the Rouviere nodes.

  11. Peak broadening in paper chromatography and related techniques VI. The efficiency of various kinds of chromatography paper and thin-layer cellulose powder for the separation of amino acids

    NARCIS (Netherlands)

    Ligny, C.L. de; Kok, E.C.M.

    1968-01-01

    The efficiency of several chromatography papers and thin-layer cellulose powders for the separation of amino acids is investigated, using the minimum elution time for a given resolution as the criterion.

  12. Peak broadening in paper chromatography and related techniques VI. The efficiency of various kinds of chromatography paper and thin-layer cellulose powder for the separation of amino acids

    NARCIS (Netherlands)

    Ligny, C.L. de; Kok, E.C.M.

    1968-01-01

    The efficiency of several chromatography papers and thin-layer cellulose powders for the separation of amino acids is investigated, using the minimum elution time for a given resolution as the criterion.

  13. Comparative performance of selected variability detection techniques in photometric time series data

    CERN Document Server

    Sokolovsky, K V; Karampelas, A; Antipin, S V; Bellas-Velidis, I; Benni, P; Bonanos, A Z; Burdanov, A Y; Derlopa, S; Hatzidimitriou, D; Khokhryakova, A D; Kolesnikova, D M; Korotkiy, S A; Lapukhin, E G; Moretti, M I; Popov, A A; Pouliasis, E; Samus, N N; Spetsieri, Z; Veselkov, S A; Volkov, K V; Yang, M; Zubareva, A M

    2016-01-01

    Photometric measurements are prone to systematic errors presenting a challenge to low-amplitude variability detection. In search for a general-purpose variability detection technique able to recover a broad range of variability types including currently unknown ones, we test 18 statistical characteristics quantifying scatter and/or correlation between brightness measurements. We compare their performance in identifying variable objects in seven time-series datasets obtained with telescopes ranging in size from a telephoto lens to 1m-class and probing variability on timescales from minutes to decades. The test datasets together include lightcurves of 127539 objects, among them 1251 variable stars of various types and represent a range of observing conditions often found in ground-based variability surveys. The real data are complemented by simulations. We propose a combination of two indices that together recover a broad range of variability types from photometric data characterized by a wide variety of sampli...

  14. Selective Ring Oscillator PUF with Statistics Correction Technique and its Evaluation

    Science.gov (United States)

    Yoshikawa, Masaya; Asai, Toshiya; Shiozaki, Mitsuru; Fujino, Takeshi

    The physical unclonable function (PUF) is a method to derive ID information peculiar to a device by detecting random physical features that cannot be controlled during the device’s manufacture. Because information such as the ID information is difficult to replicate, PUF is used as a technique to prevent forgery. PUF has two major application fields: an authentication scheme, and protection of intellectual property of the semiconductor industry. Several circuit systems to compose PUF have been reported. This study proposes a new PUF based on ring oscillator PUF. By incorporating a mechanism to correct the oscillation frequency dispersion that results from the layout, the proposed PUF can generate ID accurately. We verified the proposed PUF’s validity by conducting experiments using an FPGA that incorporates the proposed PUF.

  15. Biodesulfurization techniques: Application of selected microorganisms for organic sulfur removal from coals. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Elmore, B.B.

    1993-08-01

    As an alternative to post-combustion desulfurization of coal and pre-combustion desulfurization using physicochemical techniques, the microbial desulfurization of coal may be accomplished through the use of microbial cultures that, in an application of various microbial species, may remove both the pyritic and organic fractions of sulfur found in coal. Organisms have been isolated that readily depyritize coal but often at prohibitively low rates of desulfurization. Microbes have also been isolated that may potentially remove the organic-sulfur fraction present in coal (showing promise when acting on organic sulfur model compounds such as dibenzothiophene). The isolation and study of microorganisms demonstrating a potential for removing organic sulfur from coal has been undertaken in this project. Additionally, the organisms and mechanisms by which coal is microbially depyritized has been investigated. Three cultures were isolated that grew on dibenzothiophene (DBT), a model organic-sulfur compound, as the sole sulfur source. These cultures (UMX3, UMX9, and IGTS8) also grew on coal samples as the sole sulfur source. Numerous techniques for pretreating and ``cotreating`` coal for depyritization were also evaluated for the ability to improve the rate or extent of microbial depyritization. These include prewashing the coal with various solvents and adding surfactants to the culture broth. Using a bituminous coal containing 0.61% (w/w) pyrite washed with organic solvents at low slurry concentrations (2% w/v), the extent of depyritization was increased approximately 25% in two weeks as compared to controls. At slurry concentrations of 20% w/v, a tetrachloroethylene treatment of the coal followed by depyritization with Thiobacillus ferrooxidans increased both the rate and extent of depyritization by approximately 10%.

  16. Technique for Selecting Optimum Fan Compression Ratio based on the Effective Power Plant Parameters

    Directory of Open Access Journals (Sweden)

    I. I. Kondrashov

    2016-01-01

    Full Text Available Nowadays, civilian aircrafts occupy the major share of global aviation industry market. As to medium and long - haul aircrafts, turbofans with separate exhaust streams are widely used. Here, fuel efficiency is the main criterion of this engine. The paper presents the research results of the mutual influence of fan pressure ratio and bypass ratio on the effective specific fuel consumption. Shows the increasing bypass ratio to be a rational step for reducing the fuel consumption. Also considers the basic features of engines with a high bypass ratio. Among the other working process parameters, fan pressure ratio and bypass ratio are the most relevant for consideration as they are the most structural variables at a given level of technical excellence. The paper presents the dependence of the nacelle drag coefficient on the engine bypass ratio. For computation were adopted the projected parameters of prospective turbofans to be used in the power plant of the 180-seat medium-haul aircraft. Computation of the engine cycle was performed in Mathcad using these data, with fan pressure ratio and bypass ratio being varied. The combustion chamber gas temperature, the overall pressure ratio and engine thrust remained constant. Pressure loss coefficients, the efficiency of the engine components and the amount of air taken for cooling also remained constant. The optimal parameters corresponding to the minimum effective specific fuel consumption were found as the result of computation. The paper gives recommendations for adjusting optimal parameters, depending on the considered external factors, such as weight of engine and required fuel reserve. The obtained data can be used to estimate parameters of future turbofan engines with high bypass ratio.

  17. Techniques for selecting topology and implementing the distributed control system network

    Science.gov (United States)

    Chernyi, S.

    2016-04-01

    On grounds of reviews devoted to flows analysis methods in the data processing networks within the automated control systems for the technological process and assessment of these methods by the selected set of requirements, one may make conclusion about expediency of using the combination of graph flow algorithms and the queuing theory. The outputs of the research concerning the impact of network dynamics on the drilling platform distributed system control quality prove the fact that the quality of the transient depends upon the frequency of discretization and intensity of flows. With increasing the intensity of flows, the static error of the control enlarges. It was concluded that in order to control the automation objects in the real-time mode it is required to minimize the delays in transmitting packets in the network.

  18. Central pancreatectomy:a new technique for resection of selected pancreatic tumors

    Institute of Scientific and Technical Information of China (English)

    Omar J Shah; Irfan Robbani; Parvez Nazir; Athar B Khan

    2009-01-01

    BACKGROUND: Pancreatic tumors located in the neck region usually require pancreaticoduodenectomy or splenopancreatectomy. For small benign tumors enucleation is not usually feasible due to their size and localization; then pancreatectomy is often needed. Central pancreatectomy consists of a limited resection of the midportion of the pancreas and can be offered in benign and low-grade malignant tumors of the neck of the pancreas. The study aimed to evaluate whether central pancreatectomy has a place in pancreatic surgery. METHODS: In this study, which covered a period of 14 months, we performed central pancreatectomy in four selected patients. Preoperative evaluation and operative frozen section biopsy in indicated cases allowed proper selection for the procedure. Operative details, complications and follow-up were recorded. RESULTS: Four patients, two with serous cystadenoma, and one with an islet cell tumor, and one with a hydatid cyst, were identiifed for the procedure. The mean tumor size was 3 cm, the mean operative time was 217.5 minutes, and the mean blood loss was 382.5 ml. There was no morbidity or mortality in this series. No endocrine or exocrine deifciency was observed in any patient during a mean follow-up of 22.7 months. CONCLUSIONS: Central pancreatectomy is a procedure that offers excellent results in benign and low-grade malignant tumors. It preserves functional elements (endocrine and exocrine) of the pancreas and also eliminates the infective and hematological effects of splenectomy. Thus, central pancreatectomy should be included in the armamentarium of pancreatic surgery, and in order to obtain good results, proper indications and adequate experience are recommended.

  19. Mutual Information Analyses of Neuron Selection Techniques in Synchronous Exponential Chaotic Tabu Search for Quadratic Assignment Problems

    Science.gov (United States)

    Kawamura, Tetsuo; Horio, Yoshihiko; Hasegawa, Mikio

    The tabu search was implemented on a neural network with chaotic neuro-dynamics. This chaotic exponential tabu search shows great performance in solving quadratic assignment problems (QAPs). To exploit inherent parallel processing abilities of analog hardware systems, a synchronous updating scheme, where all the neurons in the network are updated at the same time, was proposed. However, several neurons may fire simultaneously with the synchronous updating. As a result, we cannot determine only one candidate for the 2-opt exchange from the many fired neurons. To solve this problem, several neuron selection methods, which select one specific neuron among the fired neurons, were proposed. These neuron selection methods improved the performance of the synchronous updating scheme. In this paper, we analyze the dynamics of the chaotic neural network with the neuron selection methods by means of the spatial and temporal mutual information. Through the analyses, the network solution search dynamics of the exponential chaotic tabu search with different neuron selection methods are evaluated.

  20. Novel Selectivity-Based Forensic Toxicological Validation of a Paper Spray Mass Spectrometry Method for the Quantitative Determination of Eight Amphetamines in Whole Blood

    Science.gov (United States)

    Teunissen, Sebastiaan F.; Fedick, Patrick W.; Berendsen, Bjorn J. A.; Nielen, Michel W. F.; Eberlin, Marcos N.; Graham Cooks, R.; van Asten, Arian C.

    2017-09-01

    Paper spray tandem mass spectrometry is used to identify and quantify eight individual amphetamines in whole blood in 1.3 min. The method has been optimized and fully validated according to forensic toxicology guidelines, for the quantification of amphetamine, methamphetamine, 3,4-methylenedioxyamphetamine (MDA), 3,4-methylenedioxy-N-methylamphetamine (MDMA), 3,4-methylenedioxy-N-ethylamphetamine (MDEA), para-methoxyamphetamine (PMA), para-methoxymethamphetamine (PMMA), and 4-fluoroamphetamine (4-FA). Additionally, a new concept of intrinsic and application-based selectivity is discussed, featuring increased confidence in the power to discriminate the amphetamines from other chemically similar compounds when applying an ambient mass spectrometric method without chromatographic separation. Accuracy was within ±15% and average precision was better than 15%, and better than 20% at the LLOQ. Detection limits between 15 and 50 ng/mL were obtained using only 12 μL of whole blood. [Figure not available: see fulltext.

  1. A multi-wavelength survey of AGN in the XMM-LSS field: I. Quasar selection via the KX technique

    CERN Document Server

    Nakos, Th; Andreon, S; Surdej, J; Riaud, P; Hatziminaoglou, E; Garcet, O; Alloin, D; Baes, M; Galaz, G; Pierre, M; Quintana, H; Page, M J; Tedds, J A; Ceballos, M T; Corral, A; Ebrero, J; Krumpe, M; Mateos, S

    2008-01-01

    AIMS: We present a sample of candidate quasars selected using the KX-technique. The data cover 0.68 deg^2 of the X-ray Multi-Mirror (XMM) Large-Scale Structure (LSS) survey area where overlapping multi-wavelength imaging data permits an investigation of the physical nature of selected sources. METHODS: The KX method identifies quasars on the basis of their optical (R and z') to near-infrared (Ks) photometry and point-like morphology. We combine these data with optical (u*,g'r',i',z') and mid-infrared (3.6-24 micron) wavebands to reconstruct the spectral energy distributions (SEDs) of candidate quasars. RESULTS: Of 93 sources selected as candidate quasars by the KX method, 25 are classified as quasars by the subsequent SED analysis. Spectroscopic observations are available for 12/25 of these sources and confirm the quasar hypothesis in each case. Even more, 90% of the SED-classified quasars show X-ray emission, a property not shared by any of the false candidates in the KX-selected sample. Applying a photometr...

  2. Forecasting Macroeconomic Variables using Neural Network Models and Three Automated Model Selection Techniques

    DEFF Research Database (Denmark)

    Kock, Anders Bredahl; Teräsvirta, Timo

    In this paper we consider the forecasting performance of a well-defined class of flexible models, the so-called single hidden-layer feedforward neural network models. A major aim of our study is to find out whether they, due to their flexibility, are as useful tools in economic forecasting as some...... previous studies have indicated. When forecasting with neural network models one faces several problems, all of which influence the accuracy of the forecasts. First, neural networks are often hard to estimate due to their highly nonlinear structure. In fact, their parameters are not even globally...... on the linearisation idea: the Marginal Bridge Estimator and Autometrics. Second, one must decide whether forecasting should be carried out recursively or directly. Comparisons of these two methodss exist for linear models and here these comparisons are extended to neural networks. Finally, a nonlinear model...

  3. A Framework to Implement IoT Network Performance Modelling Techniques for Network Solution Selection

    Directory of Open Access Journals (Sweden)

    Declan T. Delaney

    2016-12-01

    Full Text Available No single network solution for Internet of Things (IoT networks can provide the required level of Quality of Service (QoS for all applications in all environments. This leads to an increasing number of solutions created to fit particular scenarios. Given the increasing number and complexity of solutions available, it becomes difficult for an application developer to choose the solution which is best suited for an application. This article introduces a framework which autonomously chooses the best solution for the application given the current deployed environment. The framework utilises a performance model to predict the expected performance of a particular solution in a given environment. The framework can then choose an apt solution for the application from a set of available solutions. This article presents the framework with a set of models built using data collected from simulation. The modelling technique can determine with up to 85% accuracy the solution which performs the best for a particular performance metric given a set of solutions. The article highlights the fractured and disjointed practice currently in place for examining and comparing communication solutions and aims to open a discussion on harmonising testing procedures so that different solutions can be directly compared and offers a framework to achieve this within IoT networks.

  4. Post-selection technique for quantum channels with applications to quantum cryptography

    Energy Technology Data Exchange (ETDEWEB)

    Christandl, Matthias [University of Munich (Germany); Koenig, Robert [California Institute of Technology, Pasadena, CA (United States); Renner, Renato [ETH Zurich (Switzerland)

    2009-07-01

    We propose a general method for studying properties of quantum channels acting on an n-partite system, whose action is invariant under permutations of the subsystems. Our main result is that, in order to prove that a certain property holds for any arbitrary input, it is sufficient to consider the special case where the input is a particular de Finetti-type state, i.e., a state which consists of n identical and independent copies of an (unknown) state on a single subsystem. A similar statement holds for more general channels which are covariant with respect to the action of an arbitrary finite or locally compact group. Our technique can be applied to the analysis of information-theoretic problems. For example, in quantum cryptography, we get a simple proof for the fact that security of a discrete-variable quantum key distribution protocol against collective attacks implies security of the protocol against the most general attacks. The resulting security bounds are tighter than previously known bounds obtained by proofs relying on the exponential de Finetti theorem.

  5. Selective and validated data processing techniques for performance improvement of automatic lines

    Directory of Open Access Journals (Sweden)

    D’Aponte Francesco

    2016-01-01

    Full Text Available Optimization of the data processing techniques of accelerometers and force transducers allowed to get information about actions in order to improve the behavior of a cutting stage of a converting machinery for diapers production. In particular, different mechanical configurations have been studied and compared in order to reduce the solicitations due to the impacts between knives and anvil, to get clean and accurate cuts and to reduce wear of knives themselves. Reducing the uncertainty of measurements allowed to correctly individuate the best configuration for the pneumatic system that realize the coupling between anvil and knife. The size of pipes, the working pressure and the type of the fluid used in the coupling system have been examined. Experimental results obtained by means of acceleration and force measurements allowed to identify in a reproducible and coherent way the geometry of the pushing device and the working pressure range of the hydraulic fluid. The remarkable reduction of knife and anvil vibrations is expected to strongly reduce the wear of the cutting stage components.

  6. A Framework to Implement IoT Network Performance Modelling Techniques for Network Solution Selection.

    Science.gov (United States)

    Delaney, Declan T; O'Hare, Gregory M P

    2016-12-01

    No single network solution for Internet of Things (IoT) networks can provide the required level of Quality of Service (QoS) for all applications in all environments. This leads to an increasing number of solutions created to fit particular scenarios. Given the increasing number and complexity of solutions available, it becomes difficult for an application developer to choose the solution which is best suited for an application. This article introduces a framework which autonomously chooses the best solution for the application given the current deployed environment. The framework utilises a performance model to predict the expected performance of a particular solution in a given environment. The framework can then choose an apt solution for the application from a set of available solutions. This article presents the framework with a set of models built using data collected from simulation. The modelling technique can determine with up to 85% accuracy the solution which performs the best for a particular performance metric given a set of solutions. The article highlights the fractured and disjointed practice currently in place for examining and comparing communication solutions and aims to open a discussion on harmonising testing procedures so that different solutions can be directly compared and offers a framework to achieve this within IoT networks.

  7. A Framework to Implement IoT Network Performance Modelling Techniques for Network Solution Selection

    Science.gov (United States)

    Delaney, Declan T.; O’Hare, Gregory M. P.

    2016-01-01

    No single network solution for Internet of Things (IoT) networks can provide the required level of Quality of Service (QoS) for all applications in all environments. This leads to an increasing number of solutions created to fit particular scenarios. Given the increasing number and complexity of solutions available, it becomes difficult for an application developer to choose the solution which is best suited for an application. This article introduces a framework which autonomously chooses the best solution for the application given the current deployed environment. The framework utilises a performance model to predict the expected performance of a particular solution in a given environment. The framework can then choose an apt solution for the application from a set of available solutions. This article presents the framework with a set of models built using data collected from simulation. The modelling technique can determine with up to 85% accuracy the solution which performs the best for a particular performance metric given a set of solutions. The article highlights the fractured and disjointed practice currently in place for examining and comparing communication solutions and aims to open a discussion on harmonising testing procedures so that different solutions can be directly compared and offers a framework to achieve this within IoT networks. PMID:27916929

  8. Production of genetically and developmentally modified seaweeds: exploiting the potential of artificial selection techniques.

    Science.gov (United States)

    Charrier, Bénédicte; Rolland, Elodie; Gupta, Vishal; Reddy, C R K

    2015-01-01

    Plant feedstock with specific, modified developmental features has been a quest for centuries. Since the development and spread of agriculture, there has been a desire for plants producing disproportionate-or more abundant and more nutritional-biomass that meet human needs better than their native counterparts. Seaweed aquaculture, targeted for human consumption and the production of various raw materials, is a rapidly expanding field and its stakeholders have increasing vested interest for cost-effective and lucrative seaweed cultivation processes. Thus, scientific research on seaweed development is particularly timely: the potential for expansion of seaweed cultivation depends on the sector's capacity to produce seaweeds with modified morphological features (e.g., thicker blades), higher growth rates or delayed (or even no) fertility. Here, we review the various technical approaches used to modify development in macroalgae, which have attracted little attention from developmental biologists to date. Because seaweed (or marine macroalgae) anatomy is much less complex than that of land plants and because seaweeds belong to three different eukaryotic phyla, the mechanisms controlling their morphogenesis are key to understanding their development. Here, we present efficient sources of developmentally and genetically modified seaweeds-somatic variants, artificial hybrids and mutants-as well as the future potential of these techniques.

  9. Production of genetically and developmentally modified seaweeds: Exploiting the potential of artificial selection techniques

    Directory of Open Access Journals (Sweden)

    Bénédicte eCharrier

    2015-03-01

    Full Text Available Plant feedstock with specific, modified developmental features has been a quest for centuries. Since the development and spread of agriculture, there has been a desire for plants producing disproportionate — or more abundant and more nutritional — biomass that meet human needs better than their native counterparts. Seaweed aquaculture, targeted for human consumption and the production of various raw materials, is a rapidly expanding field and its stakeholders have increasing vested interest for cost-effective and lucrative seaweed cultivation processes. Thus, scientific research on seaweed development is particularly timely: the potential for expansion of seaweed cultivation depends on the sector’s capacity to produce seaweeds with modified morphological features (e.g. thicker blades, higher growth rates or delayed (or even no fertility. Here, we review the various technical approaches used to modify development in macroalgae, which have attracted little attention from developmental biologists to date. Because seaweed (or marine macroalgae anatomy is much less complex than that of land plants and because seaweeds belong to three different eukaryotic phyla, the mechanisms controlling their morphogenesis are key to understanding their development. Here, we present efficient sources of developmentally and genetically modified seaweeds — somatic variants, artificial hybrids and mutants — as well as the future potential of these techniques.

  10. Post-CMOS selective electroplating technique for the improvement of CMOS-MEMS accelerometers

    Science.gov (United States)

    Liu, Yu-Chia; Tsai, Ming-Han; Tang, Tsung-Lin; Fang, Weileun

    2011-10-01

    This study presents a simple approach to improve the performance of the CMOS-MEMS capacitive accelerometer by means of the post-CMOS metal electroplating process. The metal layer can be selectively electroplated on the MEMS structures at low temperature and the thickness of the metal layer can be easily adjusted by this process. Thus the performance of the capacitive accelerometer (i.e. sensitivity, noise floor and the minimum detectable signal) can be improved. In application, the proposed accelerometers have been implemented using (1) the standard CMOS 0.35 µm 2P4M process by CMOS foundry, (2) Ti/Au seed layers deposition/patterning by MEMS foundry and (3) in-house post-CMOS electroplating and releasing processes. Measurements indicate that the sensitivity is improved 2.85-fold, noise is decreased near 1.7-fold and the minimum detectable signal is improved from 1 to 0.2 G after nickel electroplating. Moreover, unwanted structure deformation due to the temperature variation is significantly suppressed by electroplated nickel.

  11. EDITORIAL: Artificial Muscles: Selected papers from the 5th World Congress on Biomimetics, Artificial Muscles and Nano-Bio (Osaka, Japan, 25-27 November 2009) Artificial Muscles: Selected papers from the 5th World Congress on Biomimetics, Artificial Muscles and Nano-Bio (Osaka, Japan, 25-27 November 2009)

    Science.gov (United States)

    Shahinpoor, Mohsen

    2011-12-01

    The 5th World Congress on Biomimetics, Artificial Muscles and Nano-Bio and the 4th International Conference on Artificial Muscles were held in Osaka, Japan, 23-27 November 2009. This special section of Smart Materials and Structures is devoted to a selected number of research papers presented at this international conference and congress. Of the 76 or so papers presented at the conference, only 10 papers were finally selected, reviewed and accepted for this special section, following the regular reviewing procedures of the journal. This special section is focused on polymeric artificial muscles, electroactive polymers, multifunctional nanocomposites and their applications. In particular, an electromechanical model for self-sensing ionic polymer-metal composite actuating devices with patterned surface electrodes is presented which discusses the concept of creating self-sensing ionic polymer-metal composite (IPMC) actuating devices with patterned surface electrodes where actuator and sensor elements are separated by a grounded shielding electrode. Eventually, an electromechanical model of the device is also proposed and validated. Following that, there is broad coverage of polytetrahydrofurane-polyethylene oxide-PEDOT conducting interpenetrating polymer networks (IPNs) for high speed actuators. The conducting polymer (poly(3,4-ethylenedioxythiophene)) is incorporated within the IPNs, which are synthesized from polyethylene oxide (PEO)/polytetrahydrofurane (PTHF) networks. PEO/PTHF IPNs are prepared using poly(ethylene glycol) methacrylate and dimethacrylate and hydroxythelechelic PTHF as starting materials. The conducting IPN actuators are prepared by oxidative polymerization of 3,4-ethylenedioxithiophene (EDOT) using FeCl3 as an oxidizing agent within the PEO/PTHF IPN host matrix. Subsequently, giant and reversible magnetorheology of carrageenan/iron oxide magnetic gels are discussed and the effect of magnetic fields on the viscoelastic properties

  12. Foreword for the special issue of selected papers from the 1st ACM SIGSPATIAL Workshop on Security and Privacy in GIS and LBS

    Directory of Open Access Journals (Sweden)

    Elisa Bertino

    2009-04-01

    Full Text Available The first Workshop on Security and Privacy in GIS and LBS (SPRINGL 2008 was organized on November 4, 2008 at Irvine (CA in conjunction with the SIGSPATIAL International Conference on Advances in Geographic Information Systems (ACM GIS 2008. The goal of the SPRINGL workshop series is to provide a forum for researchers working in the area of geospatial data security and privacy. Both security and privacy are critical for geospatial applications because of the dramatic increase and dissemination of geospatial data in several application contexts including homeland security, environmental crises, and natural and industrial disasters. Furthermore, geospatial infrastructures are being leveraged by companies to provide a large variety of location-based services (LBS able to tailor services to users. However, despite the increase of publicly accessible geospatial information only little attention is being paid to how to secure geospatial information systems (GIS and LBS. Privacy is also of increasing concern given the sensitivity of personally-identifiable location information. This is despite major advancements that have been made in secure computing infrastructures and the secure and privacy-preserving management of traditional (relational data in particular. The discussion at the workshop spanned across security and privacy aspects, as they relate to the management of geospatial data and to the development of emerging LBS. The present special issue of Transactions on Data Privacy contains four extended papers, focusing on privacy, that have been selected from the papers presented at SPRINGL 2008.

  13. Comparative performance of selected variability detection techniques in photometric time series data

    Science.gov (United States)

    Sokolovsky, K. V.; Gavras, P.; Karampelas, A.; Antipin, S. V.; Bellas-Velidis, I.; Benni, P.; Bonanos, A. Z.; Burdanov, A. Y.; Derlopa, S.; Hatzidimitriou, D.; Khokhryakova, A. D.; Kolesnikova, D. M.; Korotkiy, S. A.; Lapukhin, E. G.; Moretti, M. I.; Popov, A. A.; Pouliasis, E.; Samus, N. N.; Spetsieri, Z.; Veselkov, S. A.; Volkov, K. V.; Yang, M.; Zubareva, A. M.

    2017-01-01

    Photometric measurements are prone to systematic errors presenting a challenge to low-amplitude variability detection. In search for a general-purpose variability detection technique able to recover a broad range of variability types including currently unknown ones, we test 18 statistical characteristics quantifying scatter and/or correlation between brightness measurements. We compare their performance in identifying variable objects in seven time series data sets obtained with telescopes ranging in size from a telephoto lens to 1 m-class and probing variability on time-scales from minutes to decades. The test data sets together include light curves of 127 539 objects, among them 1251 variable stars of various types and represent a range of observing conditions often found in ground-based variability surveys. The real data are complemented by simulations. We propose a combination of two indices that together recover a broad range of variability types from photometric data characterized by a wide variety of sampling patterns, photometric accuracies and percentages of outlier measurements. The first index is the interquartile range (IQR) of magnitude measurements, sensitive to variability irrespective of a time-scale and resistant to outliers. It can be complemented by the ratio of the light-curve variance to the mean square successive difference, 1/η, which is efficient in detecting variability on time-scales longer than the typical time interval between observations. Variable objects have larger 1/η and/or IQR values than non-variable objects of similar brightness. Another approach to variability detection is to combine many variability indices using principal component analysis. We present 124 previously unknown variable stars found in the test data.

  14. Comparative performance of selected variability detection techniques in photometric time series data

    Science.gov (United States)

    Sokolovsky, K. V.; Gavras, P.; Karampelas, A.; Antipin, S. V.; Bellas-Velidis, I.; Benni, P.; Bonanos, A. Z.; Burdanov, A. Y.; Derlopa, S.; Hatzidimitriou, D.; Khokhryakova, A. D.; Kolesnikova, D. M.; Korotkiy, S. A.; Lapukhin, E. G.; Moretti, M. I.; Popov, A. A.; Pouliasis, E.; Samus, N. N.; Spetsieri, Z.; Veselkov, S. A.; Volkov, K. V.; Yang, M.; Zubareva, A. M.

    2016-09-01

    Photometric measurements are prone to systematic errors presenting a challenge to low-amplitude variability detection. In search for a general-purpose variability detection technique able to recover a broad range of variability types including currently unknown ones, we test 18 statistical characteristics quantifying scatter and/or correlation between brightness measurements. We compare their performance in identifying variable objects in seven time-series datasets obtained with telescopes ranging in size from a telephoto lens to 1 m-class and probing variability on timescales from minutes to decades. The test datasets together include lightcurves of 127539 objects, among them 1251 variable stars of various types and represent a range of observing conditions often found in ground-based variability surveys. The real data are complemented by simulations. We propose a combination of two indices that together recover a broad range of variability types from photometric data characterized by a wide variety of sampling patterns, photometric accuracies, and percentages of outlier measurements. The first index is the interquartile range (IQR) of magnitude measurements, sensitive to variability irrespective of a timescale and resistant to outliers. It can be complemented by the ratio of the lightcurve variance to the mean square successive difference, 1/η, which is efficient in detecting variability on timescales longer than the typical time interval between observations. Variable objects have larger 1/η and/or IQR values than non-variable objects of similar brightness. Another approach to variability detection is to combine many variability indices using principal component analysis. We present 124 previously unknown variable stars found in the test data.

  15. Intelligent feature selection techniques for pattern classification of Lamb wave signals

    Energy Technology Data Exchange (ETDEWEB)

    Hinders, Mark K.; Miller, Corey A. [College of William and Mary, Department of Applied Science, Williamsburg, Virginia 23187-8795 (United States)

    2014-02-18

    Lamb wave interaction with flaws is a complex, three-dimensional phenomenon, which often frustrates signal interpretation schemes based on mode arrival time shifts predicted by dispersion curves. As the flaw severity increases, scattering and mode conversion effects will often dominate the time-domain signals, obscuring available information about flaws because multiple modes may arrive on top of each other. Even for idealized flaw geometries the scattering and mode conversion behavior of Lamb waves is very complex. Here, multi-mode Lamb waves in a metal plate are propagated across a rectangular flat-bottom hole in a sequence of pitch-catch measurements corresponding to the double crosshole tomography geometry. The flaw is sequentially deepened, with the Lamb wave measurements repeated at each flaw depth. Lamb wave tomography reconstructions are used to identify which waveforms have interacted with the flaw and thereby carry information about its depth. Multiple features are extracted from each of the Lamb wave signals using wavelets, which are then fed to statistical pattern classification algorithms that identify flaw severity. In order to achieve the highest classification accuracy, an optimal feature space is required but it’s never known a priori which features are going to be best. For structural health monitoring we make use of the fact that physical flaws, such as corrosion, will only increase over time. This allows us to identify feature vectors which are topologically well-behaved by requiring that sequential classes “line up” in feature vector space. An intelligent feature selection routine is illustrated that identifies favorable class distributions in multi-dimensional feature spaces using computational homology theory. Betti numbers and formal classification accuracies are calculated for each feature space subset to establish a correlation between the topology of the class distribution and the corresponding classification accuracy.

  16. Micromultileaf collimator-based stereotactic radiosurgery for selected arteriovenous malformations: Technique and preliminary experience

    Directory of Open Access Journals (Sweden)

    Jalali Rakesh

    2009-01-01

    Full Text Available Purpose : To report our experience of stereotactic radiosurgery (SRS in consecutively treated patients with arteriovenous malformations (AVMs. Materials and Methods : Of the 87 patients, 23 patients qualified and were treated with SRS as per predefined protocol according to AVM size, location, neurological status, prior bleeding, and the AVM score. All had Spletzer-Martin grade II/III and AVM scores < 2.5. Patients underwent SRS using micromultileaf collimators delivering multiple noncoplanar fixed fields. Doses were prescribed using the Flickinger model. Patients were followed up with magnetic resonance angiography (MRA and digitally subtracted angiography (DSA. Results : The mean nidus volume was 3.65 cc. The mean prescribed maximum dose was 22 Gy and the marginal dose was 19.24 Gy; 12 Gy normal brain volume was 8.39 cc and 12 Gy marginal volume was 5.03 cc. Mean dose to brain stem, pituitary hypothalamic axis, and optic chiasm was 2.5, 0.72, and 0.49 Gy, respectively. At a median follow-up of 22 months (range 1.5-71.2 months, 7 of 10 patients presenting with a neurological deficit showed significant improvement. All 15 patients who underwent MRA 1.5-2 years after SRS had no residual nidus yielding an MRA complete obliteration rate of 100%. Twelve patients also underwent a check DSA, which confirmed obliteration in 11 of them resulting in an accuracy of MRA of 92%. One patient after SRS had transient deterioration of motor power, which resolved completely after a short course of steroids and another had mild worsening of the hemiparesis. All patients are able to lead an active functional life. Conclusions : Careful selection of cases suitable for SRS provides optimum obliteration rates with low toxicity.

  17. Changes in Selected Biochemical Indices Resulting from Various Pre-sampling Handling Techniques in Broilers

    Directory of Open Access Journals (Sweden)

    Chloupek Petr

    2011-05-01

    Full Text Available Abstract Background Since it is not yet clear whether it is possible to satisfactorily avoid sampling-induced stress interference in poultry, more studies on the pattern of physiological response and detailed quantification of stress connected with the first few minutes of capture and pre-sampling handling in poultry are required. This study focused on detection of changes in the corticosterone level and concentrations of other selected biochemical parameters in broilers handled in two different manners during blood sampling (involving catching, carrying, restraint, and blood collection itself that lasted for various time periods within the interval 30-180 seconds. Methods Stress effects of pre-sampling handling were studied in a group (n = 144 of unsexed ROSS 308 broiler chickens aged 42 d. Handling (catching, carrying, restraint, and blood sampling itself was carried out in a gentle (caught, held and carried carefully in an upright position or rough (caught by the leg, held and carried with lack of care in inverted position manner and lasted for 30 s, 60 s, 90 s, 120 s, 150 s, and 180 s. Plasma corticosterone, albumin, glucose, cholesterol, lactate, triglycerides and total protein were measured in order to assess the stress-induced changes to these biochemical indices following handling in the first few minutes of capture. Results Pre-sampling handling in a rough manner resulted in considerably higher plasma concentrations of all biochemical indices monitored when compared with gentle handling. Concentrations of plasma corticosterone after 150 and 180 s of handling were considerably higher (P Conclusions These results indicate that the pre-sampling procedure may be a considerably stressful procedure for broilers, particularly when carried out with lack of care and exceeding 120 seconds.

  18. Fun with Paper Chromatography.

    Science.gov (United States)

    Coleman, Dava; Hounshell, Paul B.

    1982-01-01

    Discusses paper chromatographic techniques and provides examples of typical classroom activities. Includes description of retardation values obtained during chromatography exercises and suggests using them for math lessons. (JN)

  19. Joint international study for the calibration of traffic conflict techniques : background paper ICTCT-Meeting, Copenhagen, 25-27 May 1983.

    NARCIS (Netherlands)

    Oppe, S.

    1983-01-01

    Conflict observation is a way of looking at the insecurity in traffic of particular locations or situations in traffic. The use of traffic conflicts techniques in safety analysis is completely different from the use of the techniques as a surrogate measure of the amount of the traffic safety.

  20. An Improved Image Steganography Method Based on LSB Technique with Random Pixel Selection

    Directory of Open Access Journals (Sweden)

    Marwa M. Emam

    2016-03-01

    Full Text Available with the rapid advance in digital network, information technology, digital libraries, and particularly World Wide Web services, many kinds of information could be retrieved any time. Thus, the security issue has become one of the most significant problems for distributing new information. It is necessary to protect this information while passing over insecure channels. Steganography introduces a strongly approach to hide the secret data in an appropriate media carriers such as images, audio files, text files, and video files. In this paper, a new image steganography method based on spatial domain is proposed. According to the proposed method, the secret message is embedded randomly in the pixel location of the cover image using Pseudo Random Number Generator (PRNG of each pixel value of the cover image instead of embedding sequentially in the pixels of the cover image. This randomization is expected to increase the security of the system. The proposed method works with two layers (Blue and Green, as (2-1-2 layer, and the byte of the message will be embedded in three pixels only in this form (3-2-3. From the experimental results, it has found that the proposed method achieves a very high Maximum Hiding Capacity (MHC, and higher visual quality as indicated by the Peak Signal-to- Noise Ratio (PSNR.

  1. A multiple criteria decision making technique for supplier selection and inventory management strategy: A case of multi-product and multi-supplier problem

    Directory of Open Access Journals (Sweden)

    Morteza Parhizkari

    2013-07-01

    Full Text Available Selection of an appropriate supplier along with planning a good inventory system has become an area of open research for the past few years. In this paper, we present a multi objective decision making supplier and inventory management model where two objectives including the quality and offering price of supplier are minimized, simultaneously. The proposed model is formulated as mixed integer programming and it is converted into an ordinary single objective function using Lp-Norm. In order to find efficient solution, we use NSGA-II as meta-heuristic technique and the performance of the proposed model is examined using some instances. The preliminary results indicate that both Lp-Norm and NSGA-II methods can be used to handle problems in various sizes.

  2. Exploring Paper.

    Science.gov (United States)

    Brand, Judith, Ed.

    1999-01-01

    Exploratorium Magazine communicates ideas that exhibits cannot easily demonstrate, extending the museum beyond its physical walls. This issue takes an in-depth look at the science and history of paper. Topics include: (1) Fascinating Facts about Paper; (2) A Closer Look at the Paper in This Magazine; (3) Handmade Paper; (4) Paper Airplanes; (5)…

  3. Statistical Mechanics Ideas and Techniques Applied to Selected Problems in Ecology

    Directory of Open Access Journals (Sweden)

    Hugo Fort

    2013-11-01

    Full Text Available Ecosystem dynamics provides an interesting arena for the application of a plethora concepts and techniques from statistical mechanics. Here I review three examples corresponding each one to an important problem in ecology. First, I start with an analytical derivation of clumpy patterns for species relative abundances (SRA empirically observed in several ecological communities involving a high number n of species, a phenomenon which have puzzled ecologists for decades. An interesting point is that this derivation uses results obtained from a statistical mechanics model for ferromagnets. Second, going beyond the mean field approximation, I study the spatial version of a popular ecological model involving just one species representing vegetation. The goal is to address the phenomena of catastrophic shifts—gradual cumulative variations in some control parameter that suddenly lead to an abrupt change in the system—illustrating it by means of the process of desertification of arid lands. The focus is on the aggregation processes and the effects of diffusion that combined lead to the formation of non trivial spatial vegetation patterns. It is shown that different quantities—like the variance, the two-point correlation function and the patchiness—may serve as early warnings for the desertification of arid lands. Remarkably, in the onset of a desertification transition the distribution of vegetation patches exhibits scale invariance typical of many physical systems in the vicinity a phase transition. I comment on similarities of and differences between these catastrophic shifts and paradigmatic thermodynamic phase transitions like the liquid-vapor change of state for a fluid. Third, I analyze the case of many species interacting in space. I choose tropical forests, which are mega-diverse ecosystems that exhibit remarkable dynamics. Therefore these ecosystems represent a research paradigm both for studies of complex systems dynamics as well as to

  4. Analysis of Drug Design for a Selection of G Protein-Coupled Neuro- Receptors Using Neural Network Techniques.

    Science.gov (United States)

    Agerskov, Claus; Mortensen, Rasmus M; Bohr, Henrik G

    2015-01-01

    A study is presented on how well possible drug-molecules can be predicted with respect to their function and binding to a selection of neuro-receptors by the use of artificial neural networks. The ligands investigated in this study are chosen to be corresponding to the G protein-coupled receptors µ-opioid, serotonin 2B (5-HT2B) and metabotropic glutamate D5. They are selected due to the availability of pharmacological drug-molecule binding data for these receptors. Feedback and deep belief artificial neural network architectures (NNs) were chosen to perform the task of aiding drugdesign. This is done by training on structural features, selected using a "minimum redundancy, maximum relevance"-test, and testing for successful prediction of categorized binding strength. An extensive comparison of the neural network performances was made in order to select the optimal architecture. Deep belief networks, trained with greedy learning algorithms, showed superior performance in prediction over the simple feedback NNs. The best networks obtained scores of more than 90 % accuracy in predicting the degree of binding drug molecules to the mentioned receptors and with a maximal Matthew`s coefficient of 0.925. The performance of 8 category networks (8 output classes for binding strength) obtained a prediction accuracy of above 60 %. After training the networks, tests were done on how well the systems could be used as an aid in designing candidate drug molecules. Specifically, it was shown how a selection of chemical characteristics could give the lowest observed IC50 values, meaning largest bio-effect pr. nM substance, around 0.03-0.06 nM. These ligand characteristics could be total number of atoms, their types etc. In conclusion, deep belief networks trained on drug-molecule structures were demonstrated as powerful computational tools, able to aid in drug-design in a fast and cheap fashion, compared to conventional pharmacological techniques.

  5. On the selection of optimization parameters for an inverse treatment planning replacement of a forward planning technique for prostate cancer.

    Science.gov (United States)

    Hristov, Dimitre H; Moftah, Belal A; Charrois, Colette; Parker, William; Souhami, Luis; Podgorsak, Ervin B

    2002-01-01

    The influence of organ volume sampling, lateral scatter inclusion, and the selection of objectives and constraints on the inverse treatment planning process with a commercial treatment planning system is investigated and suitable parameters are identified for an inverse treatment planning replacement of a clinical forward planning technique for prostate cancer. For the beam geometries of the forward technique, a variable set of parameters is used for the calculation of dose from pencil beams. An optimal set is identified after the evaluation of optimized plans that correspond to different sets of pencil-beam parameters. This set along with a single, optimized set of objectives and constraints is used to perform inverse planning on ten randomly selected patients. The acceptability of the resulting plans is verified by comparisons to the clinical ones calculated with the forward techniques. For the particular commercial treatment planning system, the default values of the pencil beam parameters are found adequate for inverse treatment planning. For all ten patients, the optimized, single set of objectives and constraints results in plans with target coverage comparable to that of the forward plans. Furthermore inverse treatment planning reduces the overall mean rectal and bladder doses by 4.8% and 5.8% of the prescription dose respectively. The study indicates that (i) inverse treatment planning results depend implicitly on the sampling of the dose distribution, (ii) inverse treatment planning results depend on the method used by the dose calculation model to account for scatter, and (iii) for certain sites, a single set of optimization parameters can be used for all patient plans.

  6. Preliminary Study on Some Properties of Co-Cr Dental Alloy Formed by Selective Laser Melting Technique

    Institute of Scientific and Technical Information of China (English)

    ZHANG Biao; HUANG Qirong; GAO Yang; LUO Peng; ZHAO Chuang

    2012-01-01

    The surface condition,some properties and ion releasing behavior of cobalt-chromium (Co-Cr)dental alloy formed by selective laser melting (SLM) technique were investigated.Before porcelain fused firing,the surface condition of the Co-Cr alloy was observed using a scanning electron microscope (SEM),and then the density and hardness were examined.After porcelain fused firing,the interface of porcelain and alloy was observed,and then the metal-ion release of the samples was tested.SLM technique provides Co-Cr alloy higher hardness than casting method.After degassing-oxidation procedure and porcelain fused firing,the interface of the alloy and porcelain showed excellent combination.Co ion was more than Cr ion released from SLM Co-Cr alloy,the amounts of Co and Cr ions were safe according to ISO security criterion.Considering the properties before and after porcelain fused sintering process,SLM technique is suitable for dental Co-Cr alloy restoration.

  7. Automatic irradiation control by an optical feedback technique for selective retina treatment (SRT) in a rabbit model

    Science.gov (United States)

    Seifert, Eric; Roh, Young-Jung; Fritz, Andreas; Park, Young Gun; Kang, Seungbum; Theisen-Kunde, Dirk; Brinkmann, Ralf

    2013-06-01

    Selective Retina Therapy (SRT) targets the Retinal Pigment Epithelium (RPE) without effecting neighboring layers as the photoreceptors or the choroid. SRT related RPE defects are ophthalmoscopically invisible. Owing to this invisibility and the variation of the threshold radiant exposure for RPE damage the treating physician does not know whether the treatment was successful or not. Thus measurement techniques enabling a correct dosing are a demanded element in SRT devices. The acquired signal can be used for monitoring or automatic irradiation control. Existing monitoring techniques are based on the detection of micro-bubbles. These bubbles are the origin of RPE cell damage for pulse durations in the ns and μs time regime 5μs. The detection can be performed by optical or acoustical approaches. Monitoring based on an acoustical approach has already been used to study the beneficial effects of SRT on diabetic macula edema and central serous retinopathy. We have developed a first real time feedback technique able to detect micro-bubble induced characteristics in the backscattered laser light fast enough to cease the laser irradiation within a burst. Therefore the laser energy within a burst of at most 30 pulses is increased linearly with every pulse. The laser irradiation is ceased as soon as micro-bubbles are detected. With this automatic approach it was possible to observe invisible lesions, an intact photoreceptor layer and a reconstruction of the RPE within one week.

  8. Nominal group technique to select attributes for discrete choice experiments: an example for drug treatment choice in osteoporosis

    Directory of Open Access Journals (Sweden)

    Hiligsmann M

    2013-02-01

    Full Text Available Mickael Hiligsmann,1-3 Caroline van Durme,2 Piet Geusens,2 Benedict GC Dellaert,4 Carmen D Dirksen,3 Trudy van der Weijden,5 Jean-Yves Reginster,6 Annelies Boonen21Department of Health Services Research, School for Public Health and Primary Care (CAPHRI, Maastricht University, The Netherlands, 2Department of Internal Medicine, CAPHRI, Maastricht University, The Netherlands, 3Department of Clinical Epidemiology and Medical Technology Assessment, CAPHRI, Maastricht University, The Netherlands, 4Department of Business Economics, Erasmus Rotterdam University, The Netherlands, 5Department of General Practice, CAPHRI, Maastricht University, The Netherlands, 6Department of Public Health, Epidemiology and Health Economics, University of Liege, BelgiumBackground: Attribute selection represents an important step in the development of discrete-choice experiments (DCEs, but is often poorly reported. In some situations, the number of attributes identified may exceed what one may find possible to pilot in a DCE. Hence, there is a need to gain insight into methods to select attributes in order to construct the final list of attributes. This study aims to test the feasibility of using the nominal group technique (NGT to select attributes for DCEs.Methods: Patient group discussions (4–8 participants were convened to prioritize a list of 12 potentially important attributes for osteoporosis drug therapy. The NGT consisted of three steps: an individual ranking of the 12 attributes by importance from 1 to 12, a group discussion on each of the attributes, including a group review of the aggregate score of the initial rankings, and a second ranking task of the same attributes.Results: Twenty-six osteoporotic patients participated in five NGT sessions. Most (80% of the patients changed their ranking after the discussion. However, the average initial and final ranking did not differ markedly. In the final ranking, the most important medication attributes were

  9. Chinese undergraduates' preferences for altruistic traits in mate selection and personal advertisement: Evidence from Q-sort technique.

    Science.gov (United States)

    Guo, Qingke; Feng, Linlin; Wang, Mingming

    2017-04-01

    Human's preferences for altruistic mates have been confirmed by many researchers. Under the deep influence of Confucianism that authorised more parental control over offspring's mate selection, Chinese people's mating strategies and mate preferences may be different from what the evolutionary psychologists have suggested. This study used the Q-sort technique to assess the roles of altruistic traits in mate selection and personal advertisement. A total of 200 university students participated in the Q-sort procedures and were asked to sort 50 traits (among which altruistic traits were mixed) according to their importance when choosing (or advertising to) a long-term (LT) or a short-term (ST) mate. Our findings were quite different from prior studies. When Chinese participants chose a mate or advertised themselves to a potential mate, kin altruism was considered to be the most important trait; altruistic traits were more preferred by males than by females and females tended to advertise themselves as more altruistic; preferences for altruistic traits showed no difference between LT and ST mate selections (or between personal advertisement to a LT and a ST mate).

  10. Preparation of Imprinted PVB/β-CD Nanofiber by Electrospinning Technique and Its Selective Binding Abilities for Naringin%Preparation of Imprinted PVB/β-CD Nanofiber by Electrospinning Technique and Its Selective Binding Abilities for Naringin

    Institute of Scientific and Technical Information of China (English)

    马秀玲; 陈震; 陈晓; 陈日耀; 郑曦

    2011-01-01

    A novel molecularly imprinted composite nanofiber was prepared by a simple electrospinning technique, in which polyvinylbutyral (PVB) was chosen as matrix, fl-cyclodextrin (β-CD) was used as a functional monomer and naringin (NG) as template molecules. After cross-linked by hexamethylene diisocyanate (HMDI), the composite nanofiber exhibited a high specific binding capacity. The morphological structure of the nanofibers was studied by means of infrared spectrum (IR), X-ray diffraction (XRD), and scanning electron microscopy (SEM). The β-CD molecules were mostly homogeneously distributed within the PVB nanofiber without forming phase separated crystalline aggregates. Compared with traditional imprinted β-CD polymer, the binding experiments demonstrated that the molecularly imprinted composite nanofiber shows the specific binding sites and the selective binding ability for NG. The molecularly imprinted nanofiber could be used at least six times without any loss in binding capacity.

  11. Paper electronics.

    Science.gov (United States)

    Tobjörk, Daniel; Österbacka, Ronald

    2011-05-03

    Paper is ubiquitous in everyday life and a truly low-cost substrate. The use of paper substrates could be extended even further, if electronic applications would be applied next to or below the printed graphics. However, applying electronics on paper is challenging. The paper surface is not only very rough compared to plastics, but is also porous. While this is detrimental for most electronic devices manufactured directly onto paper substrates, there are also approaches that are compatible with the rough and absorptive paper surface. In this review, recent advances and possibilities of these approaches are evaluated and the limitations of paper electronics are discussed.

  12. [GISE/AIAC position paper on percutaneous left atrial appendage occlusion in patients with nonvalvular atrial fibrillation: recommendations for patient selection, facilities, competences, organizing and training requirements].

    Science.gov (United States)

    Berti, Sergio; Themistoclakis, Sakis; Santoro, Gennaro; De Ponti, Roberto; Danna, Paolo; Zecchin, Massimo; Bedogni, Francesco; Padeletti, Luigi

    2014-09-01

    Thromboembolism from the left atrial appendage is the most feared complication in patients with atrial fibrillation (AF). The cornerstone for the management of chronic nonvalvular AF is stroke reduction with oral anticoagulation (OAC). However, poor compliance, maintaining a narrow therapeutic window, and major side effects such as bleeding have severely limited its use, creating a therapeutic dilemma. About 20% of AF patients do not receive OAC due to contraindications and less than half of AF patients are not on OAC due to reluctance of the prescribing physician and/or patient non-compliance. Fortunately, over the past decade, the introduction of percutaneous approaches for left atrial appendage occlusion has offered a viable alternative to the management of nonvalvular AF in patients with OAC contraindication. Occlusion devices such as the Amplatzer Cardiac Plug and Watch man device have shown their noninferiority to OAC for stroke prophylaxis with less bleeding complications, while more recently some new devices have been introduced. The aim of this position paper is to review the most relevant clinical aspects of left atrial appendage occlusion from patient selection to periprocedural and follow-up management. In addition, the importance of a medical team and an organizational environment adequate to optimize all the steps of this procedure is discussed.

  13. Selection Principles of Quotation Type of Academic Paper%学术论文引文文献类型的选择

    Institute of Scientific and Technical Information of China (English)

    朱雪莲

    2012-01-01

    Selecting document type for academic thesis should have the features of publicness and representative- ness simultaneously. The open publications, government publications and the public materials from enterprises, fa- cilities and academic institutes have priorities to other documents. Among all these the first choice is journal litera- ture. As to academic dissertations and conference papers, the citation should be decided after a serious examining and distinguishing of their authority. Usually public personal correspondence, such as BBS, Blog, is not recom- mended for citation.%学术论文的引文类型必须同时符合公开性、代表性原则。公开出版物、政府出版物,以及国家企事业科研单位、学术团体公开的资料,优先引用。公开出版物中又以期刊文献为首选。而引用学位论文、会议论文则要对其内容加以权威性再甄别。公开的私人通讯,如BBS、博客等,一般不引用。

  14. The comparative analysis of selected interactive data presentation techniques on the example of the land use structure in the commune of Tomice

    Directory of Open Access Journals (Sweden)

    Król Karol

    2016-09-01

    Full Text Available The authors present the results of a comparative analysis of selected techniques and programming tools for building interactive data presentation in the form of diagrams and maps generated in the browser.

  15. A Positive Buck Boost Converter with Mode Select Circuit and Feed Forward Techniques Using Fuzzy Logic Controller

    Directory of Open Access Journals (Sweden)

    Latha. S. C

    2014-11-01

    Full Text Available The portable devices development of semiconductor manufacturing technology, conversion efficiency, power consumption, and the size of devices have become the most important design criteria of switching power converters. For portable applications better conveniences extension of battery life and improves the conversion efficiency of power converters .It is essential to develop accurate switching power converters, which can reduce more wasted power energy. The proposed topology can achieve faster transient responses when the supply voltages are changed for the converter by making use of the feed forward network .With mode select circuit the conduction & switching losses are reduced the positive buck–boost converter operate in buck, buck–boost, or boost converter. By adding feed-forward techniques, the proposed converter can improve transient response when the supply voltages are changed. The designing, modeling & experimental results were verified in MATLAB/ Simulink. The fuzzy logic controller is used as controller.

  16. National symposium: nuclear technique in industry, medicine, agriculture and environment protection. Abstracts of papers; Krajowe sympozjum: technika jadrowa w przemysle, medycynie, rolnictwie i ochronie srodowiska. Streszczenia referatow

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-12-31

    The National Symposium `Nuclear Techniques in Industry, Medicine, Agriculture and Environment Protection` has been held in Rynia near Warsaw from 24 to 27 April 1995. Totally 94 lectures have been presented. The actual state of art in Polish investigations have been shown in all branches of applied nuclear sciences. The plenary session devoted to general topics has began the symposium. Further conference has been divided into 18 subject sessions. There were: (1) radiation technologies in environment protection; (2) radiation technologies in materials engineering; (3) radiation preservation in food; (4) radiation techniques for medical use; (5) radiotracers in industrial investigations; (6) radiotracers in water and sewage management and leak control; (7) tracers in hydrology; (8) radiotracers in materials testing; (9) instruments for environment protection, (10) radiometric industrial gages; (11) diagnostic and testing instruments; (12) application of nuclear techniques in materials testing; (13) applications of nuclear techniques in geology and hydrogeology; (14) radioanalytical methods; (15) radiation detectors; (16) radiation measurements; (17) data processing from radiometric experiments; (18) accelerators, isotopes manufacturing, INIS.

  17. Using the Oaxaca-Blinder Decomposition Technique to Analyze Learning Outcomes Changes over Time: An Application to Indonesia's Results in PISA Mathematics. Policy Research Working Paper 5584

    Science.gov (United States)

    Barrera-Osorio, Felipe; Garcia-Moreno, Vicente; Patrinos, Harry Anthony; Porta, Emilio

    2011-01-01

    The Oaxaca-Blinder technique was originally used in labor economics to decompose earnings gaps and to estimate the level of discrimination. It has been applied since in other social issues, including education, where it can be used to assess how much of a gap is due to differences in characteristics (explained variation) and how much is due to…

  18. Microfilter paper method for 17. cap alpha. -hydroxyprogesterone radioimmunoassay: its application for rapid screening for congenital adrenal hyperplasia. [Tritium tracer techniques

    Energy Technology Data Exchange (ETDEWEB)

    Pang, S.; Hotchkiss, J.; Drash, A.L.; Levine, L.S.; New, M.I.

    1977-11-01

    A new micromethod for measuring a steroid in blood collected on filter paper has been developed. The method is easy and rapid and has the specificity, accuracy and precision of RIA in whole plasma. Less than 20 ..mu..l of blood is required, and, therefore, samples may be obtained with heel prick. This method has been applied to the determination of 17..cap alpha..-hydroxyprogesterone (17..cap alpha..-OH-P) for screening patients with congenital adrenal hyperplasia (CAH) due to 21-hydroxylase deficiency. There was excellent correlation (r = .94) between the values of 17..cap alpha..-OH-P obtained by microfilter paper method and those from plasma samples of cord (40 +- 13 ng/ml) and neonatal blood (<3.6 ng/ml) in normal infants. In six neonates at risk for CAH the diagnosis was made utilizing the microfilter paper method. 17..cap alpha..-OH-P concentrations were highly elevated in both filter paper eluates of whole blood (67 to 360 ng/ml of plasma) and simultaneously obtained plasma concentration (74 to 395 ng/ml) in affected infants. The concentrations of 17..cap alpha..-OH-P remained unchanged in dried filter paper blood when stored at room temperature for up to 21 days. Thus, filter paper with dried blood may be sent for steroid assay by mail. The ease with which samples may be transported and the minute amount of sample necessary make this method a promising screening test for CAH.

  19. Transsylvian selective amygdalohippocampectomy for treatment of medial temporal lobe epilepsy: Surgical technique and operative nuances to avoid complications

    Directory of Open Access Journals (Sweden)

    Timothy J Kovanda

    2014-01-01

    Full Text Available Background: A number of different surgical techniques are effective for treatment of drug-resistant medial temporal lobe epilepsy. Of these, transsylvian selective amygdalohippocampectomy (SA, which was originally developed to maximize temporal lobe preservation, is arguably the most technically demanding to perform. Recent studies have suggested that SA may result in better neuropsychological outcomes with similar postoperative seizure control as standard anterior temporal lobectomy, which involves removal of the lateral temporal neocortex. Methods: In this article, the authors describe technical nuances to improve the safety of SA. Results: Wide sylvian fissure opening and use of neuronavigation allows an adequate exposure of the amygdala and hippocampus through a corticotomy within the inferior insular sulcus. Avoidance of rigid retractors and careful manipulation and mobilization of middle cerebral vessels will minimize ischemic complications. Identification of important landmarks during amygdalohippocampectomy, such as the medial edge of the tentorium and the third nerve within the intact arachnoid membranes covering the brainstem, further avoids operator disorientation. Conclusion: SA is a safe technique for resection of medial temporal lobe epileptogenic foci leading to drug-resistant medial temporal lobe epilepsy.

  20. Processing of Polysulfone to Free Flowing Powder by Mechanical Milling and Spray Drying Techniques for Use in Selective Laser Sintering

    Directory of Open Access Journals (Sweden)

    Nicolas Mys

    2016-04-01

    Full Text Available Polysulfone (PSU has been processed into powder form by ball milling, rotor milling, and spray drying technique in an attempt to produce new materials for Selective Laser Sintering purposes. Both rotor milling and spray drying were adept to make spherical particles that can be used for this aim. Processing PSU pellets by rotor milling in a three-step process resulted in particles of 51.8 μm mean diameter, whereas spray drying could only manage a mean diameter of 26.1 μm. The resulting powders were characterized using Differential Scanning Calorimetry (DSC, Gel Permeation Chromatography (GPC and X-ray Diffraction measurements (XRD. DSC measurements revealed an influence of all processing techniques on the thermal behavior of the material. Glass transitions remained unaffected by spray drying and rotor milling, yet a clear shift was observed for ball milling, along with a large endothermic peak in the high temperature region. This was ascribed to the imparting of an orientation into the polymer chains due to the processing method and was confirmed by XRD measurements. Of all processed powder samples, the ball milled sample was unable to dissolve for GPC measurements, suggesting degradation by chain scission and subsequent crosslinking. Spray drying and rotor milling did not cause significant degradation.

  1. The use of a polymer inclusion membrane in a paper-based sensor for the selective determination of Cu(II).

    Science.gov (United States)

    Jayawardane, B Manori; Coo, Lilibeth dlC; Cattrall, Robert W; Kolev, Spas D

    2013-11-25

    A disposable paper-based sensor (PBS) is described for the determination of Cu(II) in natural and waste waters at approximately 2 cents per measurement. The device makes use of a polymer inclusion membrane (PIM) to provide the selectivity for Cu(II). The PIM consists of 40 wt% di(2-ethlyhexyl) phosphoric acid (D2EHPA) as the carrier, 10 wt% dioctyl phthalate (DOP) as a plasticizer, 49.5 wt% poly(vinyl chloride) (PVC) as the base polymer and 0.5 wt% (mm(-1)) 1-(2'-pyridylazo)-2-naphthol (PAN) as the colourimetric reagent. High selectivity under mildly acidic conditions (HCl, pH 2.0) is achieved for Cu(II) in the presence of frequently encountered metal ions in natural and waste waters such as Fe(III), Al(III), Zn(II), Cd(II), Pb(II), Ca(II), Mg(II), and Ni(II). The laminated PBS consists of a PIM sensing disc (2mm in diameter) attached to the centre of a circular hydrophilic zone (7 mm in diameter) pretreated with 0.01 M HCl. This hydrophilic zone separates the sample port (a circular hole in the plastic cover) from the PIM sensing disc. After introducing 19.2 μL of a sample/standard solution to the sample port, Cu(II) diffuses across the hydrophilic zone and is extracted into the PIM disc as the Cu(II)-D2EHPA complex which subsequently reacts with PAN to produce the red-purple coloured Cu(II)-PAN complex. The colour intensity of the PIM disc is measured 15 min after sample/standard introduction by scanning using a flatbed scanner. Under optimal conditions the device is characterized by a limit of detection (LOD) and limit of quantitation (LOQ) of 0.06 and 0.21 mg L(-1) Cu(II), respectively, with two linear ranges together covering the Cu(II) concentration range from 0.1 to 30.0 mg L(-1). The PBS was successfully applied to the determination of Cu(II) in hot tap water and mine tailings water.

  2. Inverted Nipple Correction with Selective Dissection of Lactiferous Ducts Using an Operative Microscope and a Traction Technique.

    Science.gov (United States)

    Sowa, Yoshihiro; Itsukage, Sizu; Morita, Daiki; Numajiri, Toshiaki

    2017-04-13

    An inverted nipple is a common congenital condition in young women that may cause breastfeeding difficulty, psychological distress, repeated inflammation, and loss of sensation. Various surgical techniques have been reported for correction of inverted nipples, and all have advantages and disadvantages. Here, we report a new technique for correction of an inverted nipple using an operative microscope and traction that results in low recurrence and preserves lactation function and sensation. Between January 2010 and January 2013, we treated eight inverted nipples in seven patients with selective lactiferous duct dissection using an operative microscope. An opposite Z-plasty was added at the junction of the nipple and areola. Postoperatively, traction was applied through an apparatus made from a rubber gasket attached to a sterile syringe. Patients were followed up for 15-48 months. Adequate projection was achieved in all patients, and there was no wound dehiscence or complications such as infection. Three patients had successful pregnancies and subsequent breastfeeding that was not adversely affected by the treatment. There was no loss of sensation in any patient during the postoperative period. Our technique for treating an inverted nipple is effective and preserves lactation function and nipple sensation. The method maintains traction for a longer period, which we believe increases the success rate of the surgery for correction of severely inverted nipples. This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

  3. STUDIES ON SURFACE TENSION OF SELECTED MOUTHWASH FORMULATION BY DROP NUMBER METHOD USING TRAUBE’S STALAGMOMETER TECHNIQUE

    Directory of Open Access Journals (Sweden)

    Ghindora Ghanshayam L

    2011-02-01

    Full Text Available The selected marketed mouthwash formulations was carried out using Traube’s stalagmometer technique by drop number method to determine their individual surface tension for further identification, structure elucidation and chemical constituents. The formulation I (Potassium nitrate & sodium fluoride, formulation II (Chlorhexidine gluconate, formulation III (Thymol, eucalyptol and menthol were selected for the case study. These formulations were also evaluated to their same quantity mixture ratio with distilled water combination for estimation of different percent composition. The main aim and rationale of the study was to evaluate the surface tension of three selected formulations with distilled water. In individual surface tension study, it was noted that formulation II (48.29 dyne/cm showed highest value and formulation III (40.81 dyne/cm showed lowest value comparison between the three formulations under laboratory conditions. The 50% formulation mixture with distilled water showed minimum surface tension (49.20 dyne/cm and 90% formulation mixture with distilled water showed maximum surface tension (54.30 dyne/cm amongst other composition. In our present study, all the percent composition values were less than standard surface tension value. The 20% (50.31 dyne/cm, 70% (50.64 dyne/cm, 80% (50.26 dyne/cm and 30% (49.30 dyne/cm, 50% (49.20 dyne/cm and also 40% (51.73 dyne/cm, 60% (51.26 dyne/cm formulation mixture with distilled water showed approximately same surface tension values.

  4. Applying data mining techniques for increasing implantation rate by selecting best sperms for intra-cytoplasmic sperm injection treatment.

    Science.gov (United States)

    Mirroshandel, Seyed Abolghasem; Ghasemian, Fatemeh; Monji-Azad, Sara

    2016-12-01

    Aspiration of a good-quality sperm during intracytoplasmic sperm injection (ICSI) is one of the main concerns. Understanding the influence of individual sperm morphology on fertilization, embryo quality, and pregnancy probability is one of the most important subjects in male factor infertility. Embryologists need to decide the best sperm for injection in real time during ICSI cycle. Our objective is to predict the quality of zygote, embryo, and implantation outcome before injection of each sperm in an ICSI cycle for male factor infertility with the aim of providing a decision support system on the sperm selection. The information was collected from 219 patients with male factor infertility at the infertility therapy center of Alzahra hospital in Rasht from 2012 through 2014. The prepared dataset included the quality of zygote, embryo, and implantation outcome of 1544 injected sperms into the related oocytes. In our study, embryo transfer was performed at day 3. Each sperm was represented with thirteen clinical features. Data preprocessing was the first step in the proposed data mining algorithm. After applying more than 30 classifiers, 9 successful classifiers were selected and evaluated by 10-fold cross validation technique using precision, recall, F1, and AUC measures. Another important experiment was measuring the effect of each feature in prediction process. In zygote and embryo quality prediction, IBK and RandomCommittee models provided 79.2% and 83.8% F1, respectively. In implantation outcome prediction, KStar model achieved 95.9% F1, which is even better than prediction of human experts. All these predictions can be done in real time. A machine learning-based decision support system would be helpful in sperm selection phase of ICSI cycle to improve the success rate of ICSI treatment. Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.

  5. The application of a selection of decision-making techniques by employees in a transport work environment in conjunction with their perceived decision-making success and practice

    Directory of Open Access Journals (Sweden)

    Theuns F.J. Oosthuizen

    2014-03-01

    Full Text Available A lack of optimum selection and application of decision-making techniques, in conjunction with suitable decision-making practice and perception of employees in a transport work environment demands attention to improve overall performance. Although multiple decision-making techniques exist, five prevalent techniques were considered in this article, namely the Kepner-Tregoe, Delphi, stepladder, nominal group and brainstorming techniques. A descriptive research design was followed, using an empirical survey which was conducted among 210 workers employed in a transport work environment and studying in the field of transport management. The purpose was to establish to what extent the five decision-making techniques are used in their work environment and furthermore how the decision-making practice of using gut-feel and/or a step-by-step decision-making process and their perception of their decision-making success relate. The research confirmed that the use of decision-making techniques is correlated to perceived decision-making success. Furthermore, the Kepner-Tregoe, stepladder, Delphi and brainstorming techniques are associated with a step-by-step decision-making process. No significant association was confirmed between the use of gut-feel and decision-making techniques. Brainstorming was found to be the technique most frequently used by transport employees; however, it has limitations as a comprehensive decision-making technique. Employees working in a transport work environment need training in order to select and use the four comprehensive decision-making techniques.

  6. 18. national seminar on the rational use of the energy and exposition of equipment and services. Transactions. [Selected Papers]; 18. seminario nacional sobre el uso racional de la energia y exposicion de equipos y servicos. Memoria tecnica

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-12-31

    Selected papers from the 18th annual national seminar on the rational use of the energy and exposition of equipment and services have been separately cited in the database. The seminar is jointly sponsored by ATPAE, CONAE, and FIDE.

  7. 16. national seminar on the rational use of the energy and exposition of equipment and services. Transactions. [Selected Papers]; 16. seminario nacional sobre el uso racional de la energia y exposicion de equipos y servicios. Memoria tecnica

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-12-31

    Selected papers from the 16th annual national seminar on the rational use of the energy and exposition of equipment and services have been separately cited in the database. The seminar is jointly sponsored by ATPAE, CONAE, and FIDE.

  8. 17. national seminar on the rational use of the energy and exposition of equipment and services. Transactions. [Selected Papers]; 17. seminario nacional sobre el uso racional de la energia y exposicion de equipos y servicios. Memoria tecnica

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-12-31

    Selected papers from the 17th annual national seminar on the rational use of the energy and exposition of equipment and services have been separately cited in the database. The seminar is jointly sponsored by ATPAE, CONAE, and FIDE.

  9. 14. national seminar on the rational use of the energy and exposition of equipment and services. Transactions. [Selected Papers]; 14. seminario nacional sobre el uso racional de la energia y exposicion de equipos y servicios. Memoria tecnica

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1993-12-31

    Selected papers from the 14th annual national seminar on the rational use of the energy and exposition of equipment and services have been separately cited in the database. The seminar is jointly sponsored by ATPAE, PEMEX, and FIDE.

  10. 13. national seminar on the rational use of the energy and exposition of equipment and services. Transactions. [Selected Papers]; 13. seminario nacional sobre el uso racional de la energia y exposicion de equipos y servicios. Memoria tecnica

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1992-12-31

    Selected papers from the 13th annual national seminar on the rational use of the energy and exposition of equipment and services have been separately cited in the database. The seminar is jointly sponsored by ATPAE and FIDE.

  11. Audio Papers

    DEFF Research Database (Denmark)

    Groth, Sanne Krogh; Samson, Kristine

    2016-01-01

    With this special issue of Seismograf we are happy to present a new format of articles: Audio Papers. Audio papers resemble the regular essay or the academic text in that they deal with a certain topic of interest, but presented in the form of an audio production. The audio paper is an extension...... of the written paper through its specific use of media, a sonic awareness of aesthetics and materiality, and creative approach towards communication. The audio paper is a performative format working together with an affective and elaborate understanding of language. It is an experiment embracing intellectual...... arguments and creative work, papers and performances, written scholarship and sonic aesthetics. For this special issue of Seismograf, the guidelines for authors and peer reviewers mainly focused on the format. Topic-wise we encouraged dealing with site-specificity and topics related to the island Amager...

  12. Tensile Split Hopkinson Bar Technique: Numerical Analysis of the Problem of Wave Disturbance and Specimen Geometry Selection

    Directory of Open Access Journals (Sweden)

    Panowicz Robert

    2016-09-01

    Full Text Available A method of tensile testing of materials in dynamic conditions based on a slightly modified compressive split Hopkinson bar system using a shoulder is described in this paper. The main goal was to solve, with the use of numerical modelling, the problem of wave disturbance resulting from application of a shoulder, as well as the problem of selecting a specimen geometry that enables to study the phenomenon of high strain-rate failure in tension. It is shown that, in order to prevent any interference of disturbance with the required strain signals at a given recording moment, the positions of the strain gages on the bars have to be correctly chosen for a given experimental setup. Besides, it is demonstrated that - on the basis of simplified numerical analysis - an appropriate gage length and diameter of a material specimen for failure testing in tension can be estimated.

  13. A lossless data reduction technique for wireless EEG recorders and its use in selective data filtering for seizure monitoring.

    Science.gov (United States)

    Chengliang Dai; Bailey, Christopher

    2015-01-01

    This paper presents a time-domain based lossless data reduction technique called Log2 Sub-band encoding, which is designed for reducing the size of data recorded on a wireless electroencephalogram (EEG) recorder. A data reduction unit can help to save power from the wireless transceiver and from the storage medium since it allows lower data transmission and read/write rates, and then extends the life time of the battery on the device. Our compression ratio(CR) results show that Log2 Sub-band encoding is comparable and even superior to Huffman coding, a well known entropy encoding method, whilst requiring minimal hardware resource, and it can also be used to extract features from EEG to achieve seizure detection during the compression process. The power consumption when compressing the EEG data is presented to evaluate the system0s overall improvement on its power performance, and our results indicate that a noticeable power saving can be achieved with our technique. The possibility of applying this method to other biomedical signals will also be noted.

  14. Integrating knowledge-based multi-criteria evaluation techniques with GIS for landfill site selection: A case study using AHP

    Science.gov (United States)

    Fagbohun, B. J.; Aladejana, O. O.

    2016-09-01

    A major challenge in most growing urban areas of developing countries, without a pre-existing land use plan is the sustainable and efficient management of solid wastes. Siting a landfill is a complicated task because of several environmental regulations. This challenge gives birth to the need to develop efficient strategies for the selection of proper waste disposal sites in accordance with all existing environmental regulations. This paper presents a knowledge-based multi-criteria decision analysis using GIS for the selection of suitable landfill site in Ado-Ekiti, Nigeria. In order to identify suitable sites for landfill, seven factors - land use/cover, geology, river, soil, slope, lineament and roads - were taken into consideration. Each factor was classified and ranked based on prior knowledge about the area and existing guidelines. Weights for each factor were determined through pair-wise comparison using Saaty's 9 point scale and AHP. The integration of factors according to their weights using weighted index overlay analysis revealed that 39.23 km2 within the area was suitable to site a landfill. The resulting suitable area was classified as high suitability covering 6.47 km2 (16.49%), moderate suitability 25.48 km2 (64.95%) and low suitability 7.28 km2 (18.56%) based on their overall weights.

  15. Low coherence technique to interrogate optical sensors based on selectively filled double-core photonic crystal fiber for temperature measurement

    Science.gov (United States)

    Li, Kun; Jiang, Meng; Zhao, Zhongze; Wang, Zeming

    2017-04-01

    In this paper, an optical fiber sensing system based on low coherence interferometry (LCI) is proposed and demonstrated to interrogate sensors comprised of selectively filled double-core photonic crystal fiber (SFDC-PCF). The sensor used here is made by selectively filling about 1/3 area of air holes in the cladding of photonic crystal fiber with distilled water. So the dual-core in the sensor has different effective refractive indices, resulting in a phase delay between two lights transmitting in the fiber. The phase delay of the sensor can be compensated by a Mach-Zehnder interferometer with a scanning optical tunable delay line in one arm of the interferometer, namely temporal interrogation. By tracking the value of phase delay, the change of the measurand can be detected. Temperature measurement is carried out to testify the system performance. An average sensitivity of 0.9 μm/°C is achieved within the temperature range of 29-92 °C. This work provides a new thinking for fiber sensing technology based on LCI. The proposed all-fiber sensing system, with the merits of cost-effective, stability, and flexibility, can demodulate the SFDC-PCF sensor signals well. Further improvements such as better sensitivity, larger measurement range and multiplexing efficiency can be realized by tailoring the PCF sensor's structure.

  16. "Paper" airplanes

    National Research Council Canada - National Science Library

    2005-01-01

    ... the suggestion came from the custodian, who got his idea from an unlikely place. "You know how toilet paper always has holes in it?" he told the company president. "Well, I noticed that it never tears there. I figured if it works on toilet paper, it would work on a plane."...

  17. PAPER LANDSCAPES

    Institute of Scientific and Technical Information of China (English)

    Lorna Mansley

    2008-01-01

    <正>Take a sheet of paper, a pair of scissors or a knife, a vivid imagination and see what you can create. Synonymous with Chinese folkart, paper cutting no longer seems to be a flourishing craft amongst China’s younger generations of creatives, though its motifs can

  18. Green paper - towards a European strategy for the security of energy supply, technical document; Livret vert sur la securite de l'approvisionnement en energie, document technique

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2005-07-01

    The Green Paper sets forth a series of questions regarding the security of energy in Europe. It addresses the issue of increased consumption and dependence on oil, and sketches out possible strategies for broadening the energy supply and slowing global warming. It draws an alarming picture of the EU energy situation. If no action is taken, it predicts that the EU energy dependency will climb from 50% in 2000 to 70% in 2030. The particular situation for the main imported fossil fuels is described. This technical paper is particularly devoted to the context, the energy sources, the supply disruption, the energy demand, the fuel balance, the energy technology and the transport of fuel in the EU (transit). (A.L.B.)

  19. Single-Sex Schools, Student Achievement, and Course Selection: Evidence from Rule-Based Student Assignments in Trinidad and Tobago. NBER Working Paper No. 16817

    Science.gov (United States)

    Jackson, C. Kirabo

    2011-01-01

    Existing studies on single-sex schooling suffer from biases due to student selection to schools and single-sex schools being better in unmeasured ways. In Trinidad and Tobago students are assigned to secondary schools based on an algorithm allowing one to address self-selection bias and cleanly estimate an upper-bound single-sex school effect. The…

  20. Single-Sex Schools, Student Achievement, and Course Selection: Evidence from Rule-Based Student Assignments in Trinidad and Tobago. NBER Working Paper No. 16817

    Science.gov (United States)

    Jackson, C. Kirabo

    2011-01-01

    Existing studies on single-sex schooling suffer from biases due to student selection to schools and single-sex schools being better in unmeasured ways. In Trinidad and Tobago students are assigned to secondary schools based on an algorithm allowing one to address self-selection bias and cleanly estimate an upper-bound single-sex school effect. The…

  1. Integrated control of emission reductions, energy-saving, and cost-benefit using a multi-objective optimization technique in the pulp and paper industry.

    Science.gov (United States)

    Wen, Zongguo; Xu, Chang; Zhang, Xueying

    2015-03-17

    Reduction of water pollutant emissions and energy consumption is regarded as a key environmental objective for the pulp and paper industry. The paper develops a bottom-up model called the Industrial Water Pollutant Control and Technology Policy (IWPCTP) based on an industrial technology simulation system and multiconstraint technological optimization. Five policy scenarios covering the business as usual (BAU) scenario, the structural adjustment (SA) scenario, the cleaner technology promotion (CT) scenario, the end-treatment of pollutants (EOP) scenario, and the coupling measures (CM) scenario have been set to describe future policy measures related to the development of the pulp and paper industry from 2010-2020. The outcome of this study indicates that the energy saving amount under the CT scenario is the largest, while that under the SA scenario is the smallest. Under the CT scenario, savings by 2020 include 70 kt/year of chemical oxygen demand (COD) emission reductions and savings of 7443 kt of standard coal, 539.7 ton/year of ammonia nitrogen (NH4-N) emission reductions, and savings of 7444 kt of standard coal. Taking emission reductions, energy savings, and cost-benefit into consideration, cleaner technologies like highly efficient pulp washing, dry and wet feedstock preparation, and horizontal continuous cooking, medium and high consistency pulping and wood dry feedstock preparation are recommended.

  2. Implementation of multivariate techniques for the selection of volatile compounds as indicators of sensory quality of raw beef.

    Science.gov (United States)

    Saraiva, Cristina; Oliveira, I; Silva, J A; Martins, C; Ventanas, J; García, C

    2015-06-01

    This study was performed in order to select volatile compounds to predict the off-odour and overall assessment of raw beef's freshness Maronesa breed, using multivariate analysis. M. longissimus dorsi packed in vacuum and MAP (70 % O2/20 % CO2/10 % N2) stored at 4 ºC were examined for off-odour perception as well as the overall assessment of freshness at 10 and 21 days post mortem. The results achieved in this study demonstrated that the selected volatile compounds could be considered as volatile indicators of beef spoilage, enclosing information for discrimination of Maronesa beef samples in sensory classes of odour corresponding to unspoiled and spoiled levels. Fifty-four volatile compounds were detected. A significant increase of aldehydes, ketones and alcohols were observed during storage in MAP. 2 and 3-methylbutanal, 2 and 3-methylbutanol, 1-pentanol, 1-hexanol, 2,3-octanedione, 3,5-octanedione, octanal and nonanal were suggested as indicators of beef spoilage. 3-methylpentane was considered as a marker in the first stages of spoilage in beef, decreasing during storage. Data were examined using PCR and PLSR models for different optimal subsets of volatile compounds. The simplicity and usefulness of the technique in using 0/1 data in preserving high levels of accuracy was also prevalent. The powerful analytical methodologies for reducing variables and the choice of optimal subsets could be advantageous in both basic research and the routine quality control of chilled beef.

  3. Prospective study of ultrasound-guided percutaneous renal cryotherapy: case selection as an optimization factor for a technique.

    Science.gov (United States)

    Rodríguez-Faba, O; Palou, J; Rosales, A; de la Torre, P; Martí, J; Palazzetti, A; Villavicencio, H

    2015-01-01

    To evaluate the technical and oncological effectiveness of ultrasound-guided percutaneous renal cryotherapy (PRC) in a selected group of patients with renal cancer. We conducted a prospective study of 28 patients with posterior-facing T1a renal tumors with middle and inferior external borders. All patients underwent ultrasound-guided PRC. Follow-up was conducted with computed tomography at 1 month and then every 6 months, with a good result defined as the total absence of contrast incorporation. We performed a descriptive and survival study using the Kaplan-Meier estimator. The 28 patients had a mean age (SD) of 68.3 (10.1) years, and the group underwent 28 procedures. The mean (SD) size of the tumors was 25.5 (7.5) mm, the mean nephrometry score was 1.41 (0.52) and the mean preoperative creatinine level was 133.5 (144.1) mmol/L. There were no intraoperative complications. In terms of postoperative complications, there was only 1 case (3.5%) of a skin lesion resulting from treating a tumor in a transplanted kidney (Clavien II). The median follow-up was 25 months, and the mean (SD) postoperative creatinine level was 135.5 (110.3) mmol/L. Two cases presented radiological recurrence (93% efficacy), with a mean time to recurrence of 12 and 19 months, respectively. There were no tumor-related deaths. Our series (the largest on PRC in our country to date) shows that, with an appropriate selection of tumors, PRC is a safe technique with minimal morbidity. Ultrasonography enables the controlled performance of the procedure and saves the patient from radiation and reduces costs. Copyright © 2013 AEU. Publicado por Elsevier España, S.L.U. All rights reserved.

  4. Physics behind the new technique sensing of phage-triggered ion cascades (SEPTIC) for the prompt identification of bacteria (Invited Paper)

    Science.gov (United States)

    Kish, L. B.; Bezrukov, Sergey M.; Der, A.; Cheng, M.; King, M. D.; Young, R.; Seo, S.; Kim, J.

    2005-05-01

    Fatal injury of bacteria opens transmembrane ion pathways that create temporary ion clouds around the cells. This ion release transiently charges bacteria yielding spatiotemporal fluctuations of the electrical field which show up like a "fatal scream" in thermal noise. The effect has recently been demonstrated with the specific injuries caused by bacteriophage infections (King, et al, in press) and suggested for identification of bacteria with extraordinary speed and selectivity. Calculations indicate that the detection and identification of a single bacterium can be achieved with natural (wild) phages with reasonable efforts within a time window of 10 minutes. However the potential applicability of the agent-triggered ion cascade reaches much beyond that, including other kinds of injuries, such as those induced by antibiotics, ageing, poisoning, etc. Considerations and open questions about the physical aspects of the fluctuations and their detectability are discussed in this talk.

  5. Consensus Paper

    DEFF Research Database (Denmark)

    Karabanov, Anke; Ziemann, Ulf; Hamada, Masashi;

    2015-01-01

    Homeostatic plasticity is thought to stabilize neural activity around a set point within a physiologically reasonable dynamic range. Over the last ten years, a wide range of non-invasive transcranial brain stimulation (NTBS) techniques have been used to probe homeostatic control of cortical plast...

  6. Consensus Paper

    DEFF Research Database (Denmark)

    Karabanov, Anke; Ziemann, Ulf; Hamada, Masashi

    2015-01-01

    Homeostatic plasticity is thought to stabilize neural activity around a set point within a physiologically reasonable dynamic range. Over the last ten years, a wide range of non-invasive transcranial brain stimulation (NTBS) techniques have been used to probe homeostatic control of cortical plast...

  7. The effect of pretreatment on the purification of paper mill circulation waters by UF and NF techniques; Esikaesittelyvaiheiden vaikutus ultra- ja nanosuodatustekniikoilla tapahtuvaan kiertovesien puhdistukseen - EKT 09

    Energy Technology Data Exchange (ETDEWEB)

    Nuortila-Jokinen, J.; Nystroem, M. [Lappeenranta Univ. of Technology (Finland). Dept. of Chemical Technology

    1998-12-31

    In this study pretreatment methods for nanofiltration of paper machine save-all clarified water fractions (clear filtrate) were tested. The clear filtrates resulting from both an acidic and a neutral paper making process were used. Tubular compact modules from Stork-Friesland and a Vibration Shear Enhanced Processing (VSEP) - unit from New Logic Int. equipped with various different membranes were used. It was shown, that pretreatment with porous membranes, such as micro- or ultrafiltration membranes was not economically feasible, because the flux in the nanofiltration stage was not increased. The chemical pretreatment enhanced nanofiltration flux at neutral pH by about 20 % and the amount of irreversible fouling was reduced from 40 % to 20 %. Moreover, the chemical dosage needed was low, 0.5 mg/l. This indicates that chemical pretreatment could turn up to be a feasible way to increase the capacity of a nanofiltration plant. It was also shown, that the VSEP module, which tolerates even some amount of fibre and thus needs only coarse pretreatment, such as bend screens, gave at neutral pH nanofiltration fluxes, which were higher than those obtained earlier with other membrane modules. In general, it was seen, that pH is one of the most important factors affecting the membrane behaviour: at acidic pH lower fluxes and more fouling were obtained. (orig.) 6 refs. CACTUS Research Programme

  8. Exploring the Relationships Between Just-In-Time Technique and Manufacturing Performance: Empirical Evidence From Selected Nigerian Firms

    Directory of Open Access Journals (Sweden)

    Ph. D. John Kolade Obamiro

    2009-12-01

    Full Text Available This study explores the relationship between just-in-time technique and manufacturing performance of some selected Nigerian companies. Just-in time was considered to be an overall organisational phenomenon. Data were obtained through a structured questionnaire from a sample size of 300 knowledgeable employees to test the developed model and formulated hypotheses that cover both just-intime and the supporting infrastructures. Bivariate correlation analysis was used to test the three hypotheses. The results showed that: (1 there was a significant relationship between total quality management (supporting infrastructure and just-in-time practices; (2 Human resources management (supporting infrastructure was positively related to just-in-time practices; (3 there was a positive significant relationship between Just-in-time practices and manufacturing performance. These results demonstrate that justin- time practices can be successfully implemented if certain supporting infrastructures are provided, and also support the notion that just-in-time should be practiced at all levels and departments of the organisation, rather than viewing it strictly for shop floor workers.

  9. Selective pressurized liquid extraction technique capable of analyzing dioxins, furans, and PCBs in clams and crab tissue.

    Science.gov (United States)

    Subedi, Bikram; Aguilar, Lissette; Williams, E Spencer; Brooks, Bryan W; Usenko, Sascha

    2014-04-01

    A selective pressurized liquid extraction technique (SPLE) was developed for the analysis of polychlorodibenzo-p-dioxins, polychlorodibenzofurans (PCDD/Fs) and dioxin-like polychlorobiphenyls (dl-PCBs) in clam and crab tissue. The SPLE incorporated multiple cleanup adsorbents (alumina, florisil, silica gel, celite, and carbopack) within the extraction cell. Tissue extracts were analyzed by high resolution gas chromatography coupled with electron capture negative ionization mass spectrometry. Mean recovery (n = 3) and percent relative standard deviation for PCDD/Fs and dl-PCBs in clam and crabs was 89 ± 2.3 and 85 ± 4.0, respectively. The SPLE method was applied to clams and crabs collected from the San Jacinto River Waste Pits, a Superfund site in Houston, TX. The dl-PCBs concentrations in clams and crabs ranged from 50 to 2,450 and 5 to 800 ng/g ww, respectively. Sample preparation time and solvents were reduced by 92 % and 65 %, respectively, as compared to USEPA method 1613.

  10. Portal vein embolization for induction of selective hepatic hypertrophy prior to major hepatectomy: rationale, techniques, outcomes and future directions

    Science.gov (United States)

    Li, David; Madoff, David C.

    2016-01-01

    The ability to modulate the future liver remnant (FLR) is a key component of modern oncologic hepatobiliary surgery practice and has extended surgical candidacy for patients who may have been previously thought unable to survive liver resection. Multiple techniques have been developed to augment the FLR including portal vein embolization (PVE), associating liver partition and portal vein ligation (ALPPS), and the recently reported transhepatic liver venous deprivation (LVD). PVE is a well-established means to improve the safety of liver resection by redirecting blood flow to the FLR in an effort to selectively hypertrophy and ultimately improve functional reserve of the FLR. This article discusses the current practice of PVE with focus on summarizing the large number of published reports from which outcomes based practices have been developed. Both technical aspects of PVE including volumetry, approaches, and embolization agents; and clinical aspects of PVE including data supporting indications, and its role in conjunction with chemotherapy and transarterial embolization will be highlighted. PVE remains an important aspect of oncologic care; in large part due to the substantial foundation of information available demonstrating its clear clinical benefit for hepatic resection candidates with small anticipated FLRs. PMID:28154774

  11. Protein crystallization with paper

    Science.gov (United States)

    Matsuoka, Miki; Kakinouchi, Keisuke; Adachi, Hiroaki; Maruyama, Mihoko; Sugiyama, Shigeru; Sano, Satoshi; Yoshikawa, Hiroshi Y.; Takahashi, Yoshinori; Yoshimura, Masashi; Matsumura, Hiroyoshi; Murakami, Satoshi; Inoue, Tsuyoshi; Mori, Yusuke; Takano, Kazufumi

    2016-05-01

    We developed a new protein crystallization method that incorporates paper. A small piece of paper, such as facial tissue or KimWipes, was added to a drop of protein solution in the traditional sitting drop vapor diffusion technique, and protein crystals grew by incorporating paper. By this method, we achieved the growth of protein crystals with reducing osmotic shock. Because the technique is very simple and the materials are easy to obtain, this method will come into wide use for protein crystallization. In the future, it could be applied to nanoliter-scale crystallization screening on a paper sheet such as in inkjet printing.

  12. EDITORIAL: Selected papers from the 11th International Workshop on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS 2011) Selected papers from the 11th International Workshop on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS 2011)

    Science.gov (United States)

    Cho, Young-Ho

    2012-09-01

    This special section of Journal of Micromechanics and Microengineering features papers selected from the 11th International Workshop on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS 2011), held at Sejong Hotel in Seoul, Korea during 15-18 November 2011. Since the first PowerMEMS workshop held in Sendai, Japan in 2000, the workshop has developed as the premier forum for reporting research results in micro and nanotechnology for power generation, energy conversion, harvesting and processing applications, including in-depth technical issues on nanostructures and materials for small-scale high-density energy and thermal management. Potential PowerMEMS applications cover not only portable power devices for consumer electronics and remote sensors, but also micro engines, impulsive thrusters and fuel cells for systems ranging from the nanometer to the millimeter scale. The 2011 technical program consists of 1 plenary talk, 4 invited talks and 118 contributed presentations. The 48 oral and 70 poster presentations, selected by 27 Technical Program Committee Members from 131 submitted abstracts, have stimulated lively discussion maximizing the interaction between participants. Among them, this special section includes 9 papers covering micro-scale power generators, energy converters, harvesters, thrusters and thermal coolers. Finally, we are grateful to the members of the International Steering Committee, the Technical Program Committee, and the Local Organizing Committee for their efforts and contributions to PowerMEMS 2011. We also thank the two companies Samsung Electro-Mechanics and LG Elite for technical tour arrangements. Special thanks go to Dr Ian Forbes, the editorial staff of the Journal of Micromechanics and Microengineering, as well as to the staff of IOP Publishing for making this special section possible.

  13. JAK2 V617F in myeloid disorders: molecular diagnostic techniques and their clinical utility: a paper from the 2005 William Beaumont Hospital Symposium on Molecular Pathology.

    Science.gov (United States)

    Steensma, David P

    2006-09-01

    In early 2005, several groups of investigators studying myeloid malignancies described a novel somatic point mutation (V617F) in the conserved autoinhibitory pseudokinase domain of the Janus kinase 2 (JAK2) protein, which plays an important role in normal hematopoietic growth factor signaling. The V617F mutation is present in blood and marrow from a large proportion of patients with classic BCR/ABL-negative chronic myeloproliferative disorders and of a few patients with other clonal hematological diseases such as myelodysplastic syndrome, atypical myeloproliferative disorders, and acute myeloid leukemia. The JAK2 V617F mutation causes constitutive activation of the kinase, with deregulated intracellular signaling that mimics continuous hematopoietic growth factor stimulation. Within 7 months of the first electronic publication describing this new mutation, clinical molecular diagnostic laboratories in the United States and Europe began offering JAK2 mutation testing on a fee-for-service basis. Here, I review the various techniques used by research groups and clinical laboratories to detect the genetic mutation underlying JAK2 V617F, including fluorescent dye chemistry sequencing, allele-specific polymerase chain reaction (PCR), real-time PCR, DNA-melting curve analysis, pyrosequencing, and others. I also discuss diagnostic sensitivity, performance, and other practical concerns relevant to the clinical laboratorian in addition to the potential diagnostic utility of JAK2 mutation tests.

  14. Selected Papers Presented at the Annual Convention of the American Journalism Historians Association (Tulsa, Oklahoma, September 28-30, 1995). Part II.

    Science.gov (United States)

    American Journalism Historians' Association.

    The 14 papers in this collection all deal with 20th century journalism and journalists in the United States. The papers and their authors are: "Educating Ike: The Evolution of Presidential PR in 1953" (David W. Guth); "Crumbs from the Publishers' Golden Tables: The Plight of the Chicago Newsboy" (Jon Bekken); "'They Work Too Hard': How Newspapers…

  15. Reflections on Deviance in 1984: Selected Papers from the 1984 Midwest Symposium in Behavior Disorders. National Needs Analysis in Behavior Disorders.

    Science.gov (United States)

    Grosenick, Judith, Ed.; And Others

    Three papers from a symposium on "Reflections on Deviance in 1984" are presented with particular emphasis on educational programs for behavior disordered students. An initial paper by James A. and Robert H. Zabel entitled "Reflections on Deviance in Nineteen Eighty-Four: A Conversation with 'George Orwell'," presents a…

  16. Annual Proceedings of Selected Research and Development Papers Presented at the Annual Convention of the Association for Educational Communications and Technology (31st, Orlando, FL, 2008)

    Science.gov (United States)

    Simonson, Michael, Ed.

    2008-01-01

    For the thirty-first year, the Research and Theory Division of the Association for Educational Communications and Technology (AECT) sponsored the publication of these Proceedings. Papers were presented at the annual AECT Convention in Orlando, Florida. This year's Proceedings has two sections--Section 1 includes research and development papers and…

  17. New Directions in Journalism Research. A Selection of Papers from the Colloquium on Research in Journalism (Dubrovnik, Yugoslavia, April 1985). Publications Series B.

    Science.gov (United States)

    Furhoff, Lars, Ed.; Hemanus, Pertti, Ed.

    Intended for those interested in scientific research in journalism, the papers in this volume focus on conditions of journalism, journalism and reality, and methodology. The papers discuss the following topics: (1) research on the contents of newspapers and the working conditions for editorial staff; (2) the meanings and functions of audience in…

  18. Research for the People--Research by the People. Selected Papers from the International Forum on Participatory Research (Ljubljana, Yugoslavia, 1980).

    Science.gov (United States)

    Dubell, Folke, Ed.; And Others

    Originally presented at a forum on participatory research, these theoretical papers and case studies represent an effort to place the overall work of participatory research within the larger theoretical context of research methods, education, and structural change. In the first paper Orlando Fals Borda explores the relationship between science and…

  19. Poster papers

    Science.gov (United States)

    Schulz, Michael

    In many scientific societies, presentation by poster has become a popular alternative to oral delivery for contributed papers at major meetings. This has not been so in the AGU. My purpose in this 'editorial' is to acquaint the AGU membership with some of the advantages of the poster paper as an occasional alternative to the 10-minute talk.The main advantage for the author of a poster paper is the opportunity for interaction with an interested audience for a 3 hour period. Significant feedback from the audience is a bonus that gives the author a better understanding of his own work and how to explain it, both orally and in print. Those of us who have tried poster presentation have found it to be a very positive experience.

  20. Mathematical papers

    CERN Document Server

    Green, George

    2005-01-01

    An almost entirely self-taught mathematical genius, George Green (1793 -1841) is best known for Green's theorem, which is used in almost all computer codes that solve partial differential equations. He also published influential essays, or papers, in the fields of hydrodynamics, electricity, and magnetism. This collection comprises his most significant works.The first paper, ""An Essay on the Application of Mathematical Analysis to the Theories of Electricity and Magnetism,"" which is also the longest and perhaps the most Important, appeared In 1828. It introduced the term potential as desig

  1. Panama Papers

    DEFF Research Database (Denmark)

    Harrington, Brooke

    2016-01-01

    Mossack Fonseca kept its clients largely on the right side of the law. Indeed, that’s entirely the point. This article for The Atlantic draws on my wealth management research to explain why most of what is revealed in the Panama Papers leak will not result in criminal prosecution for anyone...

  2. Paper works

    DEFF Research Database (Denmark)

    Rasmussen, Mattias Borg

    2017-01-01

    of their land and natural resources, but also of labor and territorial sovereignty. This case shows how an Andean campesino community counters such movements by a wide repertoire of legal and social actions that works simultaneously in legal and extra-legal domains. Paper works mediate claims to territorial...

  3. Panama Papers

    DEFF Research Database (Denmark)

    Harrington, Brooke

    2016-01-01

    Mossack Fonseca kept its clients largely on the right side of the law. Indeed, that’s entirely the point. This article for The Atlantic draws on my wealth management research to explain why most of what is revealed in the Panama Papers leak will not result in criminal prosecution for anyone...

  4. Collected Papers

    CERN Document Server

    Kostant, Bertram; Kumar, Shrawan; Vergne, Michele

    2009-01-01

    The author has been one of the major architects of modern Lie theory. His interests span a tremendous range of Lie theory, from differential geometry to representation theory, abstract algebra, and mathematical physics. This title features commentaries and summaries of his papers in his own words.

  5. Selected papers on natural and man-made hazards and related questions from the 6th international CODATA conference. [Santa Flavia, Palermo, Italy, May 22-25, 1978

    Energy Technology Data Exchange (ETDEWEB)

    Dreyfus, B. (ed.)

    Eighty-seven papers were presented at this conference, which had the four themes of quality of life and environment, preservation of natural ecosystems, prediction of natural disasters, and prevention of manmade hazards. The present bulletin contains ten papers felt to be representative; these deal with earthquake prediction, pattern recognition as a method of data analysis, long-term environmental hazards, analysis of numerical biological data, operation of a data bank in biomedical science, data importance in relation to Chesapeake Bay pollution, data banks in food and agriculture, the Seveso accident, and industry needs concerning information on materials. Separate abstracts were prepared for three of the papers. (RWR)

  6. MADM Technique Integrated with Grey- based Taguchi method for Selection of Alluminium alloys to minimize deburring cost during Drilling

    Directory of Open Access Journals (Sweden)

    Reddy Sreenivasulu

    2015-06-01

    Full Text Available Traditionally, burr problems had been considered unavoidable so that most efforts had been made on removal of the burr as a post process. Nowadays, a trend of manufacturing is an integration of the whole production flow from design to end product. Manufacturing problem issues are handled in various stages even from design stage. Therefore, the methods of describing the burr are getting much attention in recent years for the systematic approach to resolve the burr problem at various manufacturing stages. The main objective of this paper is to explore the basic concepts of MADM methods. In this study, five parameters namely speed, feed, drill size, drill geometry such as point angle and clearance angle were identified to influence more on burr formation during drilling. L 18 orthogonal array was selected and experiments were conducted as per Taguchi experimental plan for Aluminium alloy of 2014, 6061, 5035 and 7075 series. The experiment performed on a CNC Machining center with HSS twist drills. The burr size such as height and thickness were measured on exit of each hole. An optimal combination of process parameters was obtained to minimize the burr size via grey relational analysis. The output from grey based- taguchi method fed as input to the MADM. Apart from burr size strength and temperature are also considered as attributes. Finally, the results generated in MADM suggests the suitable alternative of  aluminium alloy, which results in less deburring cost, high strength and high resistance at elevated temperatures.

  7. Improving the sampling strategy of the Joint Danube Survey 3 (2013) by means of multivariate statistical techniques applied on selected physico-chemical and biological data.

    Science.gov (United States)

    Hamchevici, Carmen; Udrea, Ion

    2013-11-01

    The concept of basin-wide Joint Danube Survey (JDS) was launched by the International Commission for the Protection of the Danube River (ICPDR) as a tool for investigative monitoring under the Water Framework Directive (WFD), with a frequency of 6 years. The first JDS was carried out in 2001 and its success in providing key information for characterisation of the Danube River Basin District as required by WFD lead to the organisation of the second JDS in 2007, which was the world's biggest river research expedition in that year. The present paper presents an approach for improving the survey strategy for the next planned survey JDS3 (2013) by means of several multivariate statistical techniques. In order to design the optimum structure in terms of parameters and sampling sites, principal component analysis (PCA), factor analysis (FA) and cluster analysis were applied on JDS2 data for 13 selected physico-chemical and one biological element measured in 78 sampling sites located on the main course of the Danube. Results from PCA/FA showed that most of the dataset variance (above 75%) was explained by five varifactors loaded with 8 out of 14 variables: physical (transparency and total suspended solids), relevant nutrients (N-nitrates and P-orthophosphates), feedback effects of primary production (pH, alkalinity and dissolved oxygen) and algal biomass. Taking into account the representation of the factor scores given by FA versus sampling sites and the major groups generated by the clustering procedure, the spatial network of the next survey could be carefully tailored, leading to a decreasing of sampling sites by more than 30%. The approach of target oriented sampling strategy based on the selected multivariate statistics can provide a strong reduction in dimensionality of the original data and corresponding costs as well, without any loss of information.

  8. Selective pressurized liquid extraction technique for halogenated organic pollutants in marine mammal blubber: a lipid-rich matrix.

    Science.gov (United States)

    Robinson, E M; Jia, M; Trumble, S J; Usenko, S

    2015-03-13

    Analytical methods for unique and rare samples, such as marine mammal tissue, strive to reduce opportunities for analyte loss and contamination. Historically, analytical methodologies for marine mammal tissues required an extraction followed by multiple cleanup and concentration steps. These steps increase the opportunity for analyte loss and sample contamination. Selective pressurized liquid extractions (SPLE; an analytical technique that combines PLE with in-cell adsorbent cleanup) have the potential to reduce and/or eliminate the number of steps. A SPLE method was developed for the simultaneous extraction of polybrominated diphenyl ethers (PBDEs), polychlorinated biphenyls (PCBs), and organochlorine pesticides (OCPs) from bowhead whale blubber. This SPLE utilized acidic silica with a fat-to-fat retainer ratio of 0.02 as well as eliminated post-extraction cleanup steps, such as size-exclusion chromatography step. In addition, neutral silica was placed beneath the acidic silica as an acid buffer, thereby preventing acid from contaminating the extraction system. Analysis was performed using gas chromatography/mass spectrometry in electron capture negative ionization mode. PBDE, PCB and OCP triplicate recoveries averaged 84±1%, 83±3%, and 76±11%, respectively. Overall, measurements of NIST Whale Blubber SRM 1945 were within±30% of certified values. PBDEs were measured for the first time in bowhead whale blubber; average concentrations ranged from 0.2 to 1.4 ng g(-1) wet weight (ww). Average OCPs and PCBs concentrations ranged from 0.4 to 37 ng g(-1)ww and 0.1 to 3.0 ng g(-1)ww, respectively, which were within one order of magnitude lower than those previously reported in bowhead whale blubber.

  9. Comparison between two different selective spinal anesthesia techniques in ambulatory knee arthroscopy as fast-track anesthesia

    Science.gov (United States)

    Ali Hassan, Hossam Ibrahim Eldesuky

    2015-01-01

    Background: There were several studies using either low dose Bupivacaine as unilateral selective spinal anesthesia (SSA) or low dose lidocaine SSA for ambulatory knee arthroscopy. There were many concerns about high failure rate, complications, and different times to home readiness discharges. Aim of the Study: The study aimed to: (1) Compare the clinical efficacy and side effects of two different techniques of SSA in subarachnoid block for ambulatory knee arthroscopy (2) evaluate the possibility of a shorter stay in post-anesthesia care unit (PACU) or eligibility for fast tracking anesthesia (bypassing PACU) after SSA and numbers of patient bypassed PACU (3) compare the time to ambulate and time to home readiness. Patients and Methods: Prospective, randomized and open study was conducted, including 50 outpatients undergoing knee arthroscopy. Patients allocated into two groups: Bupivacaine group (group B); was injected with 3 mg bupivacaine and 10 ug fentanyl intrathecally in lateral decubitus position and remained for 20 min then supine position. Lidocaine group (group L) was injected with 20 mg lidocaine, plus 25 ug fentanyl intrathecally and immediately keeps in the supine position after injection. The quality and durations of motor and sensory block were compared between groups. Sensory block assessed by pin brick method and motor block assessed by Bromage scale. Time spent in PACU, the time to ambulate, and times to home-readiness were compared. Number of patients bypassed PACU was recorded. Side effects as pain, nausea, vomiting, postdural puncture headache, transient neurological symptoms, retention of urine and pruritus were evaluated and compared after SSA. Results: Bupivacaine group provided unilateral spinal anesthesia with significantly longer duration of both motor and sensory blocks than bilateral spinal of lidocaine group P 0.05. Group L patients did not stay in PACU, and all patients bypassed it P anesthesia than bupivacaine spinal with shorter time

  10. CATV Technical Papers.

    Science.gov (United States)

    National Cable Television Association, Inc., Washington, DC.

    Complete technical papers of the 1977 National Cable Television Association Convention are included in this report. Twenty-two of 32 papers and two abstracts cover the topics of advanced cable television techniques, human reactions to television picture impairment, special displays and services, protection from theft of service, everyday…

  11. Panama Papers

    DEFF Research Database (Denmark)

    Harrington, Brooke

    2016-01-01

    Mossack Fonseca kept its clients largely on the right side of the law. Indeed, that’s entirely the point. This article for The Atlantic draws on my wealth management research to explain why most of what is revealed in the Panama Papers leak will not result in criminal prosecution for anyone......, and why government officials face nearly insurmountable obstacles to stopping the kind of financial games in which Mossack Fonseca and its counterparts engage....

  12. Selected papers from the twenty-third annual workshop on geothermal reservoir engineering, Stanford University; Dai 23 kai Stanford daigaku chinetsu choryuso kogaku workshop ni tsuite

    Energy Technology Data Exchange (ETDEWEB)

    Kikuchi, T. [Geological Survey of Japan, Tsukuba (Japan)

    1998-06-15

    The annual workshop on geothermal reservoir engineering at Stanford University which is now the twenty-third meeting was held for three days starting January 26, 1998. Contents of the lectures included topics as various as 12 cases of field studies, 12 modelings, 8 cases of geochemistry, 8 cases of earth science, 4 cases of physical exploration, 6 high-temperature rocks, 2 cases of deep geothermal research, 5 cases related to wells, and three others. By countries, the United States presented about half of the total number of papers, the Philippines presented about ten papers, and Japan five papers. This paper introduces the summary of four papers said to have drawn interest of the participants. The thesis No. 1 describes utilization in field scale of mass-flow measuring chemical tracers in geothermal areas in the Philippines. The thesis No. 2 is about hydraulic properties of the Dixie Valley (Nevada) geothermal area as seen from well test analysis. The thesis No. 3 is about fracture permeability of reservoir scale in the Dixie Valley (Nevada) geothermal area. The thesis No. 4 mentions high-order differential for a phase front propagation problem in geothermal systems. 4 refs., 5 figs., 2 tabs.

  13. The Ice Selective Inlet: a novel technique for exclusive extraction of pristine ice crystals in mixed-phase clouds

    Directory of Open Access Journals (Sweden)

    P. Kupiszewski

    2014-12-01

    Full Text Available Climate predictions are affected by high uncertainties partially due to an insufficient knowledge of aerosol-cloud interactions. One of the poorly understood processes is formation of mixed-phase clouds (MPCs via heterogeneous ice nucleation. Field measurements of the atmospheric ice phase in MPCs are challenging due to the presence of supercooled liquid droplets. The Ice Selective Inlet (ISI, presented in this paper, is a novel inlet designed to selectively sample pristine ice crystals in mixed-phase clouds and extract the ice residual particles contained within the crystals for physical and chemical characterisation. Using a modular setup composed of a cyclone impactor, droplet evaporation unit and pumped counterflow virtual impactor (PCVI, the ISI segregates particles based on their inertia and phase, exclusively extracting small ice particles between 5 and 20 μm in diameter. The setup also includes optical particle spectrometers for analysis of the number size distribution and shape of the sampled hydrometeors. The novelty of the ISI is a droplet evaporation unit, which separates liquid droplets and ice crystals in the airborne state, thus avoiding physical impaction of the hydrometeors and limiting potential artifacts. The design and validation of the droplet evaporation unit is based on modelling studies of droplet evaporation rates and computational fluid dynamics simulations of gas and particle flows through the unit. Prior to deployment in the field, an inter-comparison of the WELAS optical particle size spectrometers and a characterisation of the transmission efficiency of the PCVI was conducted in the laboratory. The ISI was subsequently deployed during the Cloud and Aerosol Characterisation Experiment (CLACE 2013 – an extensive international field campaign encompassing comprehensive measurements of cloud microphysics, as well as bulk aerosol, ice residual and ice nuclei properties. The campaign provided an important opportunity

  14. The Ice Selective Inlet: a novel technique for exclusive extraction of pristine ice crystals in mixed-phase clouds

    Science.gov (United States)

    Kupiszewski, P.; Weingartner, E.; Vochezer, P.; Schnaiter, M.; Bigi, A.; Gysel, M.; Rosati, B.; Toprak, E.; Mertes, S.; Baltensperger, U.

    2015-08-01

    Climate predictions are affected by high uncertainties partially due to an insufficient knowledge of aerosol-cloud interactions. One of the poorly understood processes is formation of mixed-phase clouds (MPCs) via heterogeneous ice nucleation. Field measurements of the atmospheric ice phase in MPCs are challenging due to the presence of much more numerous liquid droplets. The Ice Selective Inlet (ISI), presented in this paper, is a novel inlet designed to selectively sample pristine ice crystals in mixed-phase clouds and extract the ice residual particles contained within the crystals for physical and chemical characterization. Using a modular setup composed of a cyclone impactor, droplet evaporation unit and pumped counterflow virtual impactor (PCVI), the ISI segregates particles based on their inertia and phase, exclusively extracting small ice particles between 5 and 20 μm in diameter. The setup also includes optical particle spectrometers for analysis of the number size distribution and shape of the sampled hydrometeors. The novelty of the ISI is a droplet evaporation unit, which separates liquid droplets and ice crystals in the airborne state, thus avoiding physical impaction of the hydrometeors and limiting potential artefacts. The design and validation of the droplet evaporation unit is based on modelling studies of droplet evaporation rates and computational fluid dynamics simulations of gas and particle flows through the unit. Prior to deployment in the field, an inter-comparison of the optical particle size spectrometers and a characterization of the transmission efficiency of the PCVI was conducted in the laboratory. The ISI was subsequently deployed during the Cloud and Aerosol Characterization Experiment (CLACE) 2013 and 2014 - two extensive international field campaigns encompassing comprehensive measurements of cloud microphysics, as well as bulk aerosol, ice residual and ice nuclei properties. The campaigns provided an important opportunity for a

  15. The Ice Selective Inlet: a novel technique for exclusive extraction of pristine ice crystals in mixed-phase clouds

    Directory of Open Access Journals (Sweden)

    P. Kupiszewski

    2015-08-01

    Full Text Available Climate predictions are affected by high uncertainties partially due to an insufficient knowledge of aerosol–cloud interactions. One of the poorly understood processes is formation of mixed-phase clouds (MPCs via heterogeneous ice nucleation. Field measurements of the atmospheric ice phase in MPCs are challenging due to the presence of much more numerous liquid droplets. The Ice Selective Inlet (ISI, presented in this paper, is a novel inlet designed to selectively sample pristine ice crystals in mixed-phase clouds and extract the ice residual particles contained within the crystals for physical and chemical characterization. Using a modular setup composed of a cyclone impactor, droplet evaporation unit and pumped counterflow virtual impactor (PCVI, the ISI segregates particles based on their inertia and phase, exclusively extracting small ice particles between 5 and 20 μm in diameter. The setup also includes optical particle spectrometers for analysis of the number size distribution and shape of the sampled hydrometeors. The novelty of the ISI is a droplet evaporation unit, which separates liquid droplets and ice crystals in the airborne state, thus avoiding physical impaction of the hydrometeors and limiting potential artefacts. The design and validation of the droplet evaporation unit is based on modelling studies of droplet evaporation rates and computational fluid dynamics simulations of gas and particle flows through the unit. Prior to deployment in the field, an inter-comparison of the optical particle size spectrometers and a characterization of the transmission efficiency of the PCVI was conducted in the laboratory. The ISI was subsequently deployed during the Cloud and Aerosol Characterization Experiment (CLACE 2013 and 2014 – two extensive international field campaigns encompassing comprehensive measurements of cloud microphysics, as well as bulk aerosol, ice residual and ice nuclei properties. The campaigns provided an important

  16. Resettlement of Indochinese Refugees in the United States: A Selective and Annotated Bibliography. Monograph Series on Southeast Asia, Occasional Paper No. 10, 1983.

    Science.gov (United States)

    Ashmun, Lawrence F.

    An annotated bibliography of 1037 items on a broad range of demographic, cultural, social, and policy issues related to Indochinese refugee resettlement in the United States includes a variety of printed materials from April 1975 to the end of 1981. The bibliography includes journal and periodical articles, scholarly papers, research reports,…

  17. Additional Selected Papers from the Annual Conference of the National Association for Environmental Education (4th, New Orleans, Louisiana, April 1975).

    Science.gov (United States)

    National Association for Environmental Education, Miami, FL.

    These reports are designed to provide environmental educators with the current issues in the field. Topics discussed in these papers include general environmental concerns such as environmental controls, energy policies, environmental crises and public relations, and effects of offshore drilling on the marine environment. Illustrations for the…

  18. Annual Proceedings of Selected Research and Development Papers Presented at the Annual Convention of the Association for Educational Communications and Technology (36th, Anaheim, California, 2013). Volume 1

    Science.gov (United States)

    Simonson, Michael, Ed.

    2013-01-01

    For the thirty-sixth year, the Research and Theory Division of the Association for Educational Communications and Technology (AECT) is sponsoring the publication of these Proceedings. Papers published in this volume were presented at the annual AECT Convention in Anaheim, California. The Proceedings of AECT's Convention are published in two…

  19. Annual Proceedings of Selected Research and Development Papers Presented at the Annual Convention of the Association for Educational Communications and Technology (38th, Indianapolis, Indiana, 2015). Volume 1

    Science.gov (United States)

    Simonson, Michael, Ed.

    2015-01-01

    For the thirty-eighth time, the Research and Theory Division of the Association for Educational Communications and Technology (AECT) is sponsoring the publication of these Proceedings. Papers published in this volume were presented at the annual AECT Convention in Indianapolis, Indiana. The Proceedings of AECT's Convention are published in two…

  20. Annual Proceedings of Selected Research and Development Papers Presented at the Annual Convention of the Association for Educational Communications and Technology (32nd, Louisville, KY, 2009). Volume 1

    Science.gov (United States)

    Simonson, Michael, Ed.

    2009-01-01

    For the thirty-second year, the Research and Theory Division of the Association for Educational Communications and Technology (AECT) is sponsoring the publication of these Proceedings. Papers published in this volume were presented at the national AECT Convention in Louisville, Kentucky. The Proceedings of AECT's Convention are published in two…

  1. Annual Proceedings of Selected Research and Development Papers Presented at the Annual Convention of the Association for Educational Communications and Technology (37th, Jacksonville, Florida, 2014). Volume 1

    Science.gov (United States)

    Simonson, Michael, Ed.

    2014-01-01

    For the thirty-seventh year, the Research and Theory Division and the Division of Instructional Design of the Association for Educational Communications and Technology (AECT) sponsored the publication of these Proceedings. Papers published in this volume were presented at the annual AECT Convention in Jacksonville, Florida. This year's Proceedings…

  2. Annual Proceedings of Selected Research and Development Papers Presented at the Annual Convention of the Association for Educational Communications and Technology (36th, Anaheim, California, 2013). Volume 2

    Science.gov (United States)

    Simonson, Michael, Ed.

    2013-01-01

    For the thirty-sixth year, the Research and Theory Division of the Association for Educational Communications and Technology (AECT) is sponsoring the publication of these Proceedings. Papers published in this volume were presented at the annual AECT Convention in Anaheim, California. The Proceedings of AECT's Convention are published in two…

  3. Annual Proceedings of Selected Research and Development Papers Presented at the Annual Convention of the Association for Educational Communications and Technology (33rd, Anaheim, California, 2010). Volume 1

    Science.gov (United States)

    Simonson, Michael, Ed.

    2010-01-01

    For the thirty-third year, the Research and Theory Division of the Association for Educational Communications and Technology (AECT) is sponsoring the publication of these Proceedings. Papers published in this volume were presented at the national AECT Convention in Anaheim, California. The Proceedings of AECT's Convention are published in two…

  4. Annual Proceedings of Selected Research and Development Papers Presented at the Annual Convention of the Association for Educational Communications and Technology (35th, Louisville, Kentucky, 2012). Volume 2

    Science.gov (United States)

    Simonson, Michael, Ed.

    2012-01-01

    For the thirty-fifth year, the Research and Theory Division of the Association for Educational Communications and Technology (AECT) is sponsoring the publication of these Proceedings. Papers published in this volume were presented at the national AECT Convention in Louisville, Kentucky. The Proceedings of AECT's Convention are published in two…

  5. Annual Proceedings of Selected Research and Development Papers Presented at the Annual Convention of the Association for Educational Communications and Technology (35th, Louisville, Kentucky, 2012). Volume 1

    Science.gov (United States)

    Simonson, Michael, Ed.

    2012-01-01

    For the thirty-fifth year, the Research and Theory Division of the Association for Educational Communications and Technology (AECT) is sponsoring the publication of these Proceedings. Papers published in this volume were presented at the national AECT Convention in Louisville, Kentucky. The Proceedings of AECT's Convention are published in two…

  6. Selected Papers from the 1990 Meeting of the American Journalism Historians' Association (Coeur d'Alene, Idaho, October 2-7, 1990): Part 2.

    Science.gov (United States)

    American Journalism Historians' Association.

    The following 11 papers, on a variety of topics, were given at the 1990 meeting of the American Journalism Historians' Association: (1) "They Hang Editors Don't They?: Free Speech and Free Press Issues in the Haymarket Case, 1886" (Nathaniel Hong); (2) "G. K. Chesterton and the British Press, 1911-1933" (Dean Rapp); (3) "Trial by Newspaper in…

  7. Creating Cultures of Peace: Pedagogical Thought and Practice. Selected Papers from the 10th Triennial World Conference (September 10-15, 2001, Madrid, Spain)

    Science.gov (United States)

    Benton, Jean E., Ed.; Swami, Piyush, Ed.

    2007-01-01

    The 10th Triennial World Conference of the World Council for Curriculum and Instruction (WCCI) was held September 10-15, 2001 in Madrid, Spain. The theme of the conference was "Cultures of Peace." Thirty-four papers and presentations are divided into nine sections. Part I, Tributes to the Founders of WCCI, includes: (1) Tribute to Alice Miel…

  8. Annual Proceedings of Selected Research and Development Papers Presented at the National Convention of the Association for Educational Communications and Technology (28th, Orlando, Florida, 2005). Volume 1

    Science.gov (United States)

    Simonson, Michael, Ed.; Crawford, Margaret, Ed.

    2005-01-01

    For the twenty-eighth year, the Research and Theory Division of the Association for Educational Communications and Technology (AECT) is sponsoring the publication of these Proceedings. Papers published in this volume were presented at the National AECT Convention in Orlando, Florida. The Proceedings of AECT's Convention are published in two…

  9. Annual Proceedings of Selected Research and Development Papers Presented at the National Convention of the Association for Educational Communications and Technology (28th, Orlando, Florida, 2005). Volume 2

    Science.gov (United States)

    Simonson, Michael, Ed.; Crawford, Margaret, Ed.

    2005-01-01

    For the twenty-eighth year, the Research and Theory Division of the Association for Educational Communications and Technology (AECT) is sponsoring the publication of these Proceedings. Papers published in this volume were presented at the National AECT Convention in Orlando, Florida. The Proceedings of AECT's Convention are published in two…

  10. Theory, Research, and Applications: Selected Papers from the Annual Meeting of the National Association for Bilingual Education (16th, Denver, Colorado, March 30-April 3, 1987).

    Science.gov (United States)

    Malave, Lilliam M., Ed.

    Papers in this volume include the following: "The Theoretical Framework of Jim Cummins: A Review and Critique"; "The Development of Bilingual Behavior"; "Effective Schools Research and Language Instruction Programs"; "Reading and Writing Instruction in Three Bilingual Education Programs in Connecticut";…

  11. Mathematics Education. Selected Papers from the Conference on Stochastic Processes and Their Applications. (15th, Nagoya, Japan, July 2-5, 1985).

    Science.gov (United States)

    Hida, Takeyuki; Shimizu, Akinobu

    This volume contains the papers and comments from the Workshop on Mathematics Education, a special session of the 15th Conference on Stochastic Processes and Their Applications, held in Nagoya, Japan, July 2-5, 1985. Topics covered include: (1) probability; (2) statistics; (3) deviation; (4) Japanese mathematics curriculum; (5) statistical…

  12. Introduction to the special series featuring selected papers from the inaugural meeting of the North American Society for the Study of Personality Disorders.

    Science.gov (United States)

    Hopwood, Christopher J

    2014-01-01

    In this article the inaugural meeting of the North American Society for the Study of Personality Disorders (NASSPD) is described against the backdrop of some exciting themes in contemporary personality disorder theory, research, and treatment. Commentary is provided for 7 papers included in this issue as representative of the talks delivered at the NASSPD meeting which highlight these broad themes.

  13. Recent Advances in Paper-Based Sensors

    Directory of Open Access Journals (Sweden)

    Edith Chow

    2012-08-01

    Full Text Available Paper-based sensors are a new alternative technology for fabricating simple, low-cost, portable and disposable analytical devices for many application areas including clinical diagnosis, food quality control and environmental monitoring. The unique properties of paper which allow passive liquid transport and compatibility with chemicals/biochemicals are the main advantages of using paper as a sensing platform. Depending on the main goal to be achieved in paper-based sensors, the fabrication methods and the analysis techniques can be tuned to fulfill the needs of the end-user. Current paper-based sensors are focused on microfluidic delivery of solution to the detection site whereas more advanced designs involve complex 3-D geometries based on the same microfluidic principles. Although paper-based sensors are very promising, they still suffer from certain limitations such as accuracy and sensitivity. However, it is anticipated that in the future, with advances in fabrication and analytical techniques, that there will be more new and innovative developments in paper-based sensors. These sensors could better meet the current objectives of a viable low-cost and portable device in addition to offering high sensitivity and selectivity, and multiple analyte discrimination. This paper is a review of recent advances in paper-based sensors and covers the following topics: existing fabrication techniques, analytical methods and application areas. Finally, the present challenges and future outlooks are discussed.

  14. EDITORIAL Smart materials, multifunctional composites, and morphing structures: selected papers from the 20th International Conference on Adaptive Structures and Technologies (ICAST 2009) Smart materials, multifunctional composites, and morphing structures: selected papers from the 20th International Conference on Adaptive Structures and Technologies (ICAST 2009)

    Science.gov (United States)

    Liao, Wei-Hsin

    2010-12-01

    The 20th International Conference on Adaptive Structures and Technologies (ICAST) was held on 20-22 October 2009 in Hong Kong. This special section of Smart Materials and Structures is derived from the research papers presented at the conference. Of the 106 papers presented at the conference, 11 papers were reviewed and accepted for this special section, following the regular review procedures of the journal. This special section is focused on smart materials, multifunctional composites, and applications on morphing structures. Smart materials. Smart materials are the foundation of adaptive structures and intelligent systems. The development of new materials will lead to significant improvement in various applications. Three articles are focused on the fabrication of new materials and investigation of their behaviors: Barium strontium zirconate titanate ((Ba1-xSrx)(ZrxTi1-x)O3; BSZT, x = 0.25 and 0.75) ceramics with a highly crystalline structure were fabricated using the combustion technique. The microstructure of BSZT powders exhibited an almost-spherical morphology and had a porous agglomerated form. Polyaniline (PANI)/clay nanoparticles with unique core-shell structure were synthesized via Pickering emulsion polymerization. By dispersing PANI/clay nanoparticles in silicone oil, the ER fluid was made. Magnetic field effects were investigated on the deposition rate and surface morphology of chromium nitride coatings deposited by magnetron sputtering for superior hardness, excellent wear and oxidation resistance. The surface morphology of chromium nitride films was also examined by a scanning electron microscope (SEM). Multifunctional composites. Composites are made from two or more constituent materials so they can combine the best properties of different materials. Five papers deal with fabrication, testing, and modeling of various multifunctional composites: A new active structural fiber (ASF) was fabricated by coating a single carbon fiber with a concentric

  15. Paper justice.

    Science.gov (United States)

    Culler, T A

    2000-01-01

    This article relates the case of two young girls who became pregnant as a result of rape and their efforts to exercise their rights to terminate the pregnancy. The first victim was a 12-year-old girl from Bolivia and the second was Paulina, a 13-year-old resident of Baja California, Mexico. Though abortion is illegal in both countries, in the case of rape the procedure is "unpunishable" in Bolivia and legal in Mexico. Despite these laws, the girls, their families and their advocates contend repeatedly with local government and Catholic Church officials on the issue. Only the first victim successfully exercised her right to terminate her pregnancy through the efforts of her family and the decision of Penal Judge Luis Ledezma. This paper also highlights the need for reforms in the abortion law in both countries.

  16. Evaluation of a rabbit model for osteomyelitis by high field, high resolution imaging using the chemical-shift-specific-slice-selection technique.

    Science.gov (United States)

    Volk, A; Crémieux, A C; Belmatoug, N; Vallois, J M; Pocidalo, J J; Carbon, C

    1994-01-01

    The rabbit model of osteomyelitis introduced by C.W. Norden, based on injection of an infecting solution (Staphylococcus aureus, sodium morrhuate) into the tibia, was studied at 4.7 Tesla with a time-efficient chemical shift selective imaging technique, Chemical Shift Specific Slice Selection (C4S). The evolution of the disease over several weeks was followed on water-selective, fat-selective, and sum images obtained simultaneously with this imaging sequence. Experiments were performed either on different groups of rabbits at different times after infection with subsequent sacrifice of the animal and microbiological analysis of the infected tibia or on the same group of animals imaged several times after infection. Associated analysis of the water and fat selective images revealed marrow modifications very early (Day 5 after inoculation) demonstrating the high sensitivity of the employed imaging technique. Later on, bone modifications were best identified on the sum images. Additional experiments performed on animals injected with a noninfecting solution containing only sodium morrhuate showed however that the sclerosing agent alone can yield images similar to those produced by infection at early stages after inoculation. Therefore, the Norden model would not be suitable for monitoring quantitatively outcome of therapy by magnetic resonance imaging. It is however well adapted for the evaluation and optimization of MRI techniques or protocols intended to detect early changes of bone marrow produced by septic or aseptic infarct.

  17. The Relationships between Human Fatigue and Public Health: A Brief Commentary on Selected Papers from the 9th International Conference on Managing Fatigue in Transportation, Resources and Health

    Directory of Open Access Journals (Sweden)

    Charli Sargent

    2016-08-01

    Full Text Available The 9th International Conference on Managing Fatigue in Transportation, Resources and Health was held in Fremantle, Western Australia in March 2015. The purpose of the conferences in this series is to provide a forum for industry representatives, regulators, and scientists to discuss recent advances in the field of fatigue research. We have produced a Special Issue of the International Journal of Environmental Research and Public Health based on papers from the conference that were focused on various aspects of public health. First, the Special Issue highlights the fact that working long shifts and/or night shifts can affect not only cognitive functioning, but also physical health. In particular, three papers examined the potential relationships between shiftwork and different aspects of health, including the cardiovascular system, sleep disordered breathing, and eating behaviour. Second, the Special Issue highlights the move away from controlling fatigue through prescriptive hours of service rules and toward the application of risk management principles. In particular, three papers indicated that best-practice fatigue risk management systems should contain multiple redundant layers of defense against fatigue-related errors and accidents.

  18. The Relationships between Human Fatigue and Public Health: A Brief Commentary on Selected Papers from the 9th International Conference on Managing Fatigue in Transportation, Resources and Health.

    Science.gov (United States)

    Sargent, Charli; Roberts, Paul; Dawson, Drew; Ferguson, Sally; Meuleners, Lynn; Brook, Libby; Roach, Gregory D

    2016-08-24

    The 9th International Conference on Managing Fatigue in Transportation, Resources and Health was held in Fremantle, Western Australia in March 2015. The purpose of the conferences in this series is to provide a forum for industry representatives, regulators, and scientists to discuss recent advances in the field of fatigue research. We have produced a Special Issue of the International Journal of Environmental Research and Public Health based on papers from the conference that were focused on various aspects of public health. First, the Special Issue highlights the fact that working long shifts and/or night shifts can affect not only cognitive functioning, but also physical health. In particular, three papers examined the potential relationships between shiftwork and different aspects of health, including the cardiovascular system, sleep disordered breathing, and eating behaviour. Second, the Special Issue highlights the move away from controlling fatigue through prescriptive hours of service rules and toward the application of risk management principles. In particular, three papers indicated that best-practice fatigue risk management systems should contain multiple redundant layers of defense against fatigue-related errors and accidents.

  19. A Best Practice for Selecting Your QEP: Techniques for Facilitating Mission-Based Stakeholder Involvement in the Selection of the Institutional Quality Enhancement Plan

    Science.gov (United States)

    Tincher-Ladner, Lynn

    2009-01-01

    How can comprehensive community colleges serve students with diverse learning needs today while determining a single Quality Enhancement Plan (QEP) to improve student learning? During the reaffirmation planning process, Mississippi Gulf Coast Community College (MGCCC) recognized this challenge and responded by designing a plan for the selection of…

  20. Selective Processing Techniques for Electronics and Opto-Electronic Applications: Quantum-Well Devices and Integrated Optic Circuits

    Science.gov (United States)

    1993-02-10

    conventionally 11. LASER FABRICATION OF RIB.LIKE WAVEGUIDES fabricated devices. Experimental results are described by simple theoretical models. The technique...the and important issue which laser fabrication techniques may be experiment for the range of angles used. capable of addressing, Finally, the

  1. Placement of replace select Ti-Unite-coated type implants using a combination of immediate and submerge techniques after tooth extraction

    Directory of Open Access Journals (Sweden)

    Coen Pramono D

    2006-06-01

    Full Text Available The high success rate of immediate implant placement both in the anterior and posterior regions were reported by many authors, therefore applying this techniques can be considered as a safe surgical procedure and minimizing the dental office visit for patient satisfaction. This paper reports the outcome of immediate placement of implants following extraction of anterior maxillary teeth. Combination technique of immediate and submerge implant placements including bone grafting procedure were used. Four implants with TiUnite surface type were placed immediately in two patients with the short-term result indicated that this technique may serve as a simple and safe procedure for immediate implant placement. It was concluded that immediate implant placement technique combined with TiUnite implant surface was successful in treating region directly after tooth extraction therefore this technique can be use as an alternative surgical method for dental implant rehabilitation.

  2. Annual Proceedings of Selected Papers on the Practice of Educational Communications and Technology Presented at the Annual Convention of the Association for Educational Communications and Technology (33rd, Anaheim, California, 2010). Volume 2

    Science.gov (United States)

    Simonson, Michael, Ed.

    2010-01-01

    For the thirty-third year, the Research and Theory Division of the Association for Educational Communications and Technology (AECT) is sponsoring the publication of these Proceedings. This is Volume #2 of the 33rd "Annual Proceedings of Selected Papers on the Practice of Educational Communications and Technology." This volume includes…

  3. New Beginnings: The Library as an Information and Resource Basket. Selected Papers from PIALA 2008: Pacific Islands Association of Libraries, Archives and Museums Annual Conference (18th, Colonia, Yap, Federated States of Micronesia, November 17-21, 2001)

    Science.gov (United States)

    Horie, Ruth H., Ed.

    2009-01-01

    This publication follows the tradition of publishing selected papers from Pacific Islands Association of Libraries, Archives and Museums (PIALA) annual conferences. The volume begins with a listing of the members of the PIALA 2008 Planning Committee, the Officers and Executive Board, and Acknowledgements, followed by the Schedule of Events and a…

  4. Discover the Hidden Jewels in Your Library and Sharing the Wealth through Collaboration. Selected Papers from PIALA 2011, Pacific Islands Association of Libraries, Archives, and Museums Annual Conference (21st, Kosrae, Federated States of Micronesia, November 14-17, 2011)

    Science.gov (United States)

    Drake, Paul B., Ed.

    2012-01-01

    This publication follows the tradition of publishing selected papers from Pacific Islands Association of Libraries, Archives and Museums (PIALA) annual conferences. This 21st annual conference was held in Kosrae, Federated States of Micronesia, November 14-17, 2011. The volume begins with a listing of the members of the PIALA 2011 Planning…

  5. Quality of Literature Review and Discussion of Findings in Selected Papers on Integration of ICT in Teaching, Role of Mentors, and Teaching Science through Science, Technology, Engineering, and Mathematics (STEM)

    Science.gov (United States)

    Mudavanhu, Young

    2017-01-01

    The purposes of this study were to examine the extent to which literature was used to discuss findings in selected papers from Zimbabwe Journal, and to compare the quality of reviews in this journal with other international journals. The study was largely qualitative in nature and used convenient sampling. In the study, the Zimbabwe Journal was…

  6. Language Teacher Education in a Fast-Changing World. Anthology Series 29. Selected Papers from a Seminar on Language Teacher Education in a Fast-Changing World (April 1992).

    Science.gov (United States)

    Sadtono, Eugenius, Ed.

    Selected papers from a 1992 seminar on innovations in language teacher education include: "Collaboration in Assessment: Empowering the Individual Course Member" (Leslie Dickinson); "An Approach to the Evaluation of ELT Preparation Programs" (Stephen J. Gaies); "Human Resources Development in the Management of English Language Programs: An…

  7. 15. national seminar on the rational use of the energy and exposition of equipment and services. Transactions. [Selected Papers]; 15. seminario nacional sobre el uso racional de la energia y exposicion de equipos y servicios. Memoria tecnica

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1994-12-31

    Selected papers from the 15th annual national seminar on the rational use of the energy and exposition of equipment and services have been separately cited in the database. The seminar is jointly sponsored by ATPAE, Universidad autonoma Metropolitana, and FIDE.

  8. Population Dynamics and Educational Development: A Selection of Papers Presented at the Regional Seminar of Experts on Population Dynamics and Educational Planning (Bangkok, Thailand, September 10-18, 1973).

    Science.gov (United States)

    United Nations Educational, Scientific, and Cultural Organization, Bangkok (Thailand). Regional Office for Education in Asia and Oceania.

    A selection of papers on Asian population trends and educational development is presented in four parts. Part I defines the major components of Asian population growth as the rapid decline in mortality after 1945, relative increases in the population of less developed regions, accelerated fertility potential, and unequal distribution of wealth.…

  9. The Atomic Papers: A citizen's guide to selected books and articles on the bomb, the arms race, nuclear power, the peace movement, and related issues

    Energy Technology Data Exchange (ETDEWEB)

    Burns, G.

    1984-01-01

    The Atomic Papers annotates over 800 books published since 1945 and approximately 300 periodical articles since 1980 on every facet of the nuclear dilemma: the development and effects of the bomb, the arms race, nuclear proliferation, and the peace movement. Work on both sides of the nuclear power controversy also receives substantial attention. All references are to English-language material, and nearly half are to work published since 1980. The concluding chapter, ''The Art of Fission,'' describes over one hundred novels and stories with nuclear themes published since 1945--and, in a few cases, before that date.

  10. Entropy Best Paper Award 2013

    Directory of Open Access Journals (Sweden)

    Kevin H. Knuth

    2013-02-01

    Full Text Available The journal Entropy is initiating a “Best Paper” award to recognize outstanding papers in the area of entropy and information studies published in Entropy. We are pleased to announce the first “Entropy Best Paper Award” for 2013. Nominations were selected by the Editor-in-Chief and selected Editorial Board Members from all the papers published in 2009 and evaluated by the Entropy Best Paper Award Committee. Reviews and articles were evaluated separately. A first prize is awarded to the selected review paper, and a first and second prize is awarded to the top two selected research articles.

  11. ELECTRODIALYSIS AS A TECHNIQUE FOR EXTENDING ELECTROLESS NICKEL BATH LIFE-IMPROVING SELECTIVITY AND REDUCING LOSSES OF VALUABLE BATH COMPONENTS

    Science.gov (United States)

    Over the last decade electrodialysis has emerged as an effective technique for removing accumulated reactant counterions (sodium and sulfate) and reaction products (orthophosphite) that interfere with the electroless nickel plating process, thus extending bath life by up to 50 me...

  12. Thermal stability of bioactive enzymatic papers.

    Science.gov (United States)

    Khan, Mohidus Samad; Li, Xu; Shen, Wei; Garnier, Gil

    2010-01-01

    The thermal stability of two enzymes adsorbed on paper, alkaline phosphatase (ALP) and horseradish peroxidase (HRP), was measured using a colorimetric technique quantifying the intensity of the product complex. The enzymes adsorbed on paper retained their functionality and selectivity. Adsorption on paper increased the enzyme thermal stability by 2-3 orders of magnitude compared to the same enzyme in solution. ALP and HRP enzymatic papers had half-lives of 533 h and 239 h at 23 degrees C, respectively. The thermal degradation of adsorbed enzyme was found to follow two sequential first-order reactions, indication of a reaction system. A complex pattern of enzyme was printed on paper using a thermal inkjet printer. Paper and inkjet printing are ideal material and process to manufacture low-cost-high volume bioactive surfaces.

  13. Selective CdTe Nanoheteroepitaxial Growth on Si(100) Substrates Using the Close-Spaced Sublimation Technique Without the Use of a Mask

    Science.gov (United States)

    Diaz, A.; Quinones, S. A.; Ferrer, D. A.

    2013-06-01

    The development of HgCdTe detectors requires high sensitivity, small pixel size, low defect density, long-term thermal-cycling reliability, and large-area substrates. CdTe bulk substrates were initially used for epitaxial growth of HgCdTe films. However, CdTe has a lattice mismatch with long-wavelength infrared (LWIR) and middle-wavelength infrared (MWIR) HgCdTe that results in detrimental dislocation densities above mid-106 cm-2. This work explores the use of CdTe/Si as a possible substrate for HgCdTe detectors. Although there is a 19% lattice mismatch between CdTe and Si, the nanoheteroepitaxy (NHE) technique makes it possible to grow CdTe on Si substrates with fewer defects at the CdTe/Si interface. In this work, Si(100) was patterned using photolithography and dry etching to create 500-nm to 1- μm pillars. CdTe was selectively deposited on the pillar surfaces using the close-spaced sublimation (CSS) technique. Scanning electron microscopy (SEM) was used to characterize the CdTe selective growth and grain morphology, and transmission electron microscopy (TEM) was used to analyze the structure and quality of the grains. CdTe selectivity was achieved for most of the substrate and source temperatures used in this study. The ability to selectively deposit CdTe on patterned Si(100) substrates without the use of a mask or seed layer has not been observed before using the CSS technique. The results from this study confirm that CSS has the potential to be an effective and low-cost technique for selective nanoheteroepitaxial growth of CdTe films on Si(100) substrates for infrared detector applications.

  14. Mathematical optimization techniques for managing selective catalytic reduction for a fleet of coal-fired power plants

    Science.gov (United States)

    Alanis Pena, Antonio Alejandro

    Major commercial electricity generation is done by burning fossil fuels out of which coal-fired power plants produce a substantial quantity of electricity worldwide. The United States has large reserves of coal, and it is cheaply available, making it a good choice for the generation of electricity on a large scale. However, one major problem associated with using coal for combustion is that it produces a group of pollutants known as nitrogen oxides (NO x). NOx are strong oxidizers and contribute to ozone formation and respiratory illness. The Environmental Protection Agency (EPA) regulates the quantity of NOx emitted to the atmosphere in the United States. One technique coal-fired power plants use to reduce NOx emissions is Selective Catalytic Reduction (SCR). SCR uses layers of catalyst that need to be added or changed to maintain the required performance. Power plants do add or change catalyst layers during temporary shutdowns, but it is expensive. However, many companies do not have only one power plant, but instead they can have a fleet of coal-fired power plants. A fleet of power plants can use EPA cap and trade programs to have an outlet NOx emission below the allowances for the fleet. For that reason, the main aim of this research is to develop an SCR management mathematical optimization methods that, with a given set of scheduled outages for a fleet of power plants, minimizes the total cost of the entire fleet of power plants and also maintain outlet NO x below the desired target for the entire fleet. We use a multi commodity network flow problem (MCFP) that creates edges that represent all the SCR catalyst layers for each plant. This MCFP is relaxed because it does not consider average daily NOx constraint, and it is solved by a binary integer program. After that, we add the average daily NOx constraint to the model with a schedule elimination constraint (MCFPwSEC). The MCFPwSEC eliminates, one by one, the solutions that do not satisfy the average daily

  15. EDITORIAL: Special section: Selected papers from OMS'05, the 1st Topical Meeting of the European Optical Society on Optical Microsystems (OMS)

    Science.gov (United States)

    Rendina, Ivo; Fazio, Eugenio; Ferraro, Pietro

    2006-07-01

    move forward separately. Thus, we wanted the meeting to encourage the cross-fertilization of ideas of all the people involved and active in the areas of optics, photonics, microelectronics and materials, by gathering together theoreticians, experimentalists and those interested in industrial applications. For these reasons the conference programme focused on fundamental as well as more applied topics. Photonic crystals, non-linear and quantum optics in micro-devices, nanophotonic-based devices, silicon-based optoelectronics and MOEMS, microsensors, biochips and the new characterization methods for materials and devices were among the hot topics of the conference. Special emphasis was also given to industrial applications and to technologies enabling the production of microsytems and their sub-components. In this special section of Journal of Optics A: Pure and Applied Optics, a series of interesting papers has been collected, reporting progress in the different aspects of microsystems design, production, characterization and testing. The papers embrace most of the various topics that were debated during the conference. We hope that these papers will not only report the most up-to-date research progress made in this field, but will also involve and stimulate everyone working in these areas to continue in the effort of developing more and better optical microsystems in the future. We would like to thank all the members of the Scientific and Industrial Committees for the high scientific content of the meeting and the European Optical Society for its support of the conference organization.

  16. Entropy Best Paper Award 2015

    Directory of Open Access Journals (Sweden)

    Kevin H. Knuth

    2015-02-01

    Full Text Available We are pleased to announce the “Entropy Best Paper Award” for 2015. Nominations were selected by the Editor-in-Chief and designated Editorial Board Members from all the papers published in 2011. Reviews and research papers were evaluated separately. We gladly announce that the following three papers have won the Entropy Best Paper Award in 2015:[...

  17. Selected papers from the 21th annual workshop on geothermal reservoir engineering, Stanford Univ.; Dai 21 kai Sutanfodo Daigaku chinetsu choryuso kogaku waku shppu no ronbun shokai

    Energy Technology Data Exchange (ETDEWEB)

    Yano, Y. [Geological Survey of Japan, Tsukuba (Japan)

    1996-06-15

    Workshop on geothermal reservoir engineering of Stanford is carried out at the end of January every year and this time is the 21st workshop. The sessions of workshop are geothermal-in general. reservoir evaluation, modeling, geology/geochemistry, fracture modeling, hot dry rock (HDR), earth chemistry, low enthalpy, reduction, adsorption well stimulation, well test, drilling and so forth, however, the contents of lectures are diverse and cannot be grasped with the session title only. There were a few of presentations from Japan, however this time they were not introduced. In this report, some papers attended with interest by authors such as DOE`s Geothermal Division: A period of transition, Laboratory studies of injection into horizontal fractures, A study of electrical generating capacities of self-discharging slim holes, injection plume behavior in fractured, vapor-dominated reservoirs, simulating the effects of adsorption and capillary forces in geothermal reservoirs, Reinjected water return at Miravalles geothermal reservoir, Costa Rica and so forth are introduced. 8 refs., 5 figs.

  18. The Effect of Selected Cleaning Techniques on Berkshire Lee Marble: A Scientific Study at Philadelphia City Hall

    Science.gov (United States)

    Mossotti, Victor G.; Eldeeb, A. Raouf; Fries, Terry L.; Coombs, Mary Jane; Naude, Virginia N.; Soderberg, Lisa; Wheeler, George S.

    2002-01-01

    This report describes a scientific investigation of the effects of eight different cleaning techniques on the Berkshire Lee marble component of the facade of the East Center Pavilion at Philadelphia City Hall; the study was commissioned by the city of Philadelphia. The eight cleaning techniques evaluated in this study were power wash (proprietary gel detergent followed by water rinse under pressure), misting (treatment with potable, nebulized water for 24-36 hours), gommage (proprietary Thomann-Hanry low-pressure, air-driven, small-particle, dry abrasion), combination (gommage followed by misting), Armax (sodium bicarbonate delivered under pressure in a water wash), JOS (dolomite powder delivered in a low-pressure, rotary-vortex water wash), laser (thermal ablation), and dry ice (powdered-dry-ice abrasion delivered under pressure). In our study approximately 160 cores were removed from the building for laboratory analysis. We developed a computer program to analyze scanning-electron-micrograph images for the microscale surface roughness and other morphologic parameters of the stone surface, including the near-surface fracture density of the stone. An analysis of more than 1,100 samples cut from the cores provided a statistical basis for crafting the essential elements of a reduced-form, mixed-kinetics conceptual model that represents the deterioration of calcareous stone in terms of self-organized soiling and erosion patterns. This model, in turn, provided a basis for identifying the variables that are affected by the cleaning techniques and for evaluating the extent to which such variables influence the stability of the stone. The model recognizes three classes of variables that may influence the soiling load on the stone, including such exogenous environmental variables as airborne moisture, pollutant concentrations, and local aerodynamics, and such endogenous stone variables as surface chemistry and microstructure (fracturing, roughness, and so on). This study

  19. Developing a paper presentation.

    Science.gov (United States)

    Pierce, L L; Gregg, M M

    1994-01-01

    The purpose of this article is to provide suggestions for developing and presenting papers at an educational conference or other professional meeting. The authors offer suggestions on how to write an abstract, deal with rejection or success, develop an outline, construct a lecture, select audiovisual materials, and use public-speaking skills. The practical strategies described in this article are intended to enable rehabilitation nurses and other readers to develop and/or enhance their paper presentations.

  20. Original paper Prevalence of selected organ-specific autoantibodies in rheumatoid arthritis and primary Sjögren’s syndrome patients

    Directory of Open Access Journals (Sweden)

    Arkadiusz Koszarny

    2015-05-01

    Full Text Available Objectives : The aim of the study was to investigate the prevalence of selected organ-specific autoantibodies in rheumatoid arthritis (RA and primary Sjögren’s syndrome (pSS patients, and discuss their clinical significance. Material and methods : The study included 121 RA and 30 pSS patients. Sera were tested for the presence of autoantibodies to thyroid peroxidase (anti-TPO, thyroglobulin (anti-TG, TSH receptor (TRAbs, mitochondrial antigen M2 (AMA-M2-3E and gliadin-analogous fusion peptides (anti-GAF(3X using the ELISA method. Non-organ-specific antibodies were determined: rheumatoid factor in IgM class, anti-citrullinated peptide antibodies and antinuclear antibodies. The occurrence of antibodies was also examined with regards to RA activity. Results : The following autoantibodies were detected in RA patients: anti-TPO – 13 (10.7%, anti-TG – 6 (5%, AMA-M2-3E – 3 (2.5%, anti-GAF(3X – 5 (4.1%. The respective levels of these autoantibodies in pSS patients were 3 (10%, 2 (6.7%, 4 (13.3% and 2 (6.7%. Polyautoimmunity was confirmed in 34 RA patients (including 20 cases of autoimmune thyroid disease [AITD] and in 6 pSS patients (6 cases of AITD. When RA patients were divided into anti-TPO positive and anti-TPO negative groups, we found a statistically significant relationship between groups regarding age and hemoglobin concentration. In pSS patients the anti-TPO positive group was less likely to use immunosuppressive drugs as compared with the anti-TPO negative group. Anti-TPO was significantly more frequently detected in RA + AITD vs. RA, RA + SS + AITD vs. RA and in pSS + AITD vs. pSS patients. Conclusions : Organ-specific autoantibodies are relatively frequently observed in patients with RA and pSS. Their presence is connected with the clinical picture of the diseases.