Sample records for included papers describing

  1. The challenges of describing rehabilitation services: A discussion paper

    Directory of Open Access Journals (Sweden)

    Cecilie Røe


    Full Text Available To apply the Classification of Service Organization in Rehabilitation (ICSO-R classification of services to different target groups, include the user perspective, identify missing categories, and propose standardized descriptors for the categories from a Norwegian perspective. Expert-based consensus conferences with user involvement. Health professionals, stakeholders and users. Participants were divided into 5 panels, which applied the ICSO-R to describe the habilitation and rehabilitation services provided to children with cerebral palsy and people with Huntington’s disease, acquired brain injuries (traumatic brain injuries and stroke and painful musculoskeletal conditions. Based on the Problem/Population, Intervention, Comparison, Outcome (PICO framework, the services were described according to the ICSO-R. Missing categories were identified. The ICSO-R was found to be feasible and applicable for describing a variety of services provided to different target groups in Norway, but the user perspective was lacking, categories were missing, and a need for standardized description of the categories was identified. The present work supports the need to produce an updated version of the ICSO-R and to encourage national and international discussion of the framework. The ICSO-R has the potential to become a tool for the standardized assessment of rehabilitation services. For such purposes, more standardized descriptions of subcategories are necessary.

  2. Red Sea Leucothoidae (Crustacea: Amphipoda) including new and re-described species

    KAUST Repository

    White, Kristine N.


    Examination of leucothoid amphipods of the Red Sea has revealed seven species not previously reported from this location. Leucothoe minoculis sp. nov., Leucothoe pansa sp. nov., Leucothoe reimeri sp. nov., and Paranamixis sommelieri sp. nov. are described and the range of Leucothoe predenticulata Ledoyer, 1978, L. acutilobata Ledoyer, 1978 and L. squalidens Ledoyer, 1978 is expanded to include the Red Sea. Clarification of reports of L. acanthopus Schellenberg, 1928 and L. bannwarthi (Schellenberg, 1928) is provided and Leucothoe alani sp. nov. is described from outside the Red Sea.

  3. Francis Moto The aim of this paper is to describe tonal mobility in ...

    African Journals Online (AJOL)

    Francis Moto. The aim of this paper is to describe tonal mobility in. Chichewa. We will establish that the surface positions of. Chichewa tonal contrasts do not always con-espond to their original locations in the underlying structure, but rather that their point of origin may be in preceding syllables, morphemes or even words, ...

  4. This paper describes Open Access (OA). It discusses two main forms ...

    African Journals Online (AJOL)

    term reliable, standards-compliant online repository with a license permitting unrestricted access and utilization subject only to proper attribution of authorship and ethical norms. There is some disagreement on the taxonomy and naming of open access mechanisms (Bethesda 2003; Carl 2005; Doaj2007). This paper ...

  5. 78 FR 21151 - Boise White Paper, LLC, A Subsidiary of Boise Paper Holdings, LLC, Including On-Site Leased... (United States)


    ... Paper, LLC, A Subsidiary of Boise Paper Holdings, LLC, Including On-Site Leased Workers From Guardsmark.... Helens, OR; Boise White Paper, LLC, A Subsidiary of Boise Paper Holdings, LLC, Vancouver, WA; Amended... workers and former workers of Boise White Paper, LLC, a subsidiary of Boise Paper Holdings, LLC, St...

  6. 75 FR 26794 - International Paper Company Franklin Pulp & Paper Mill Including On-Site Leased Workers From... (United States)


    ... DEPARTMENT OF LABOR Employment and Training Administration [TA-W-72,764] International Paper Company Franklin Pulp & Paper Mill Including On-Site Leased Workers From Railserve, Franklin, VA; Amended... workers of International Paper Company, Franklin Pulp & Paper Mill, Franklin, Virginia. The notice was...

  7. 76 FR 2145 - International Paper Company, Franklin Pulp & Paper Mill, Including On-Site Leased Workers From... (United States)


    ... DEPARTMENT OF LABOR Employment and Training Administration [TA-W-72,764] International Paper Company, Franklin Pulp & Paper Mill, Including On-Site Leased Workers From Railserve, Franklin, VA..., applicable to workers and former workers of International Paper Company, Franklin Pulp & Paper Mill, Franklin...

  8. Anopheles darlingi polytene chromosomes: revised maps including newly described inversions and evidence for population structure in Manaus. (United States)

    Cornel, Anthony J; Brisco, Katherine K; Tadei, Wanderli P; Secundino, Nágila Fc; Rafael, Miriam S; Galardo, Allan Kr; Medeiros, Jansen F; Pessoa, Felipe Ac; Ríos-Velásquez, Claudia M; Lee, Yoosook; Pimenta, Paulo Fp; Lanzaro, Gregory C


    Salivary gland polytene chromosomes of 4th instar Anopheles darlingi Root were examined from multiple locations in the Brazilian Amazon. Minor modifications were made to existing polytene photomaps. These included changes to the breakpoint positions of several previously described paracentric inversions and descriptions of four new paracentric inversions, two on the right arm of chromosome 3 and two on the left arm of chromosome 3 that were found in multiple locations. A total of 18 inversions on the X (n = 1) chromosome, chromosome 2 (n = 7) and 3 (n = 11) were scored for 83 individuals from Manaus, Macapá and Porto Velho municipalities. The frequency of 2Ra inversion karyotypes in Manaus shows significant deficiency of heterozygotes (p < 0.0009). No significant linkage disequilibrium was found between inversions on chromosome 2 and 3. We hypothesize that at least two sympatric subpopulations exist within the An. darlingi population at Manaus based on inversion frequencies.

  9. Pheromone dispensers, including organic polymer fibers, described in the crop protection literature: comparison of their innovation potential. (United States)

    Hummel, Hans E; Langner, S S; Eisinger, M-T


    parameters, they hold considerable promise for future pest control against a variety of pest insects. In combination with well known synthetic sex pheromones, they can be used for communication disruption studies. One example, the pheromone of the European grape vine moth Lobesia botrana (Lepidoptera: Tortricidae), in combination with Ecoflex fibers, has been thoroughly tested in vineyards of Freiburg, Southwest Germany, with promising results. Seven weeks of communication disruption have been achieved, long enough to cover any one of several flights of this multivoltine grape pest. Disruption effects of around 95% have been achieved which are statistically indistinguishable from positive controls tested simultaneously with Isonet LE fibers, while an untreated negative control is significantly different. Ecoflex is a cheap organic co-polyester and completely biodegradable within half a year. Thus, an extra recovery step as with some other dispensers is unnecessary. This co-polyester is also of proven non-toxicity. The extension of the seven week disruption period towards half a year (the entire duration of all 3 Lobesia flights combined) is desirable and is under additional investigation in the near future. The discovery of suitable mesofibers is protected by European and US patents. The pheromone literature appearing between 1959 and today contains more than 25,000 references. This wealth of information is immediately applicable to pest management. It has major impacts on chemical ecology and IPM. In this paper, an attempt is made to compare the systems described in the literature and to derive some predictions about their prospective innovation potential. Special emphasis is given to the new development of organic biodegradable microfibers. To this end, a new electronic searching algorithm is introduced for reviewing the entries to be found in 4 specific databases. Its prominent features will be described. Surprisingly we found no previous entries in the literature linking

  10. Comparative genomic analysis of the genus Staphylococcus including Staphylococcus aureus and its newly described sister species Staphylococcus simiae (United States)


    Background Staphylococcus belongs to the Gram-positive low G + C content group of the Firmicutes division of bacteria. Staphylococcus aureus is an important human and veterinary pathogen that causes a broad spectrum of diseases, and has developed important multidrug resistant forms such as methicillin-resistant S. aureus (MRSA). Staphylococcus simiae was isolated from South American squirrel monkeys in 2000, and is a coagulase-negative bacterium, closely related, and possibly the sister group, to S. aureus. Comparative genomic analyses of closely related bacteria with different phenotypes can provide information relevant to understanding adaptation to host environment and mechanisms of pathogenicity. Results We determined a Roche/454 draft genome sequence for S. simiae and included it in comparative genomic analyses with 11 other Staphylococcus species including S. aureus. A genome based phylogeny of the genus confirms that S. simiae is the sister group to S. aureus and indicates that the most basal Staphylococcus lineage is Staphylococcus pseudintermedius, followed by Staphylococcus carnosus. Given the primary niche of these two latter taxa, compared to the other species in the genus, this phylogeny suggests that human adaptation evolved after the split of S. carnosus. The two coagulase-positive species (S. aureus and S. pseudintermedius) are not phylogenetically closest but share many virulence factors exclusively, suggesting that these genes were acquired by horizontal transfer. Enrichment in genes related to mobile elements such as prophage in S. aureus relative to S. simiae suggests that pathogenesis in the S. aureus group has developed by gene gain through horizontal transfer, after the split of S. aureus and S. simiae from their common ancestor. Conclusions Comparative genomic analyses across 12 Staphylococcus species provide hypotheses about lineages in which human adaptation has taken place and contributions of horizontal transfer in pathogenesis. PMID

  11. Position paper on the impact of including methane number in natural gas regulation

    International Nuclear Information System (INIS)


    GIIGNL has developed a position paper to describe methane number and the possible impact on the LNG market of a future regulation/specification for this parameter which is linked to natural gas quality. Currently, there are several standards describing calculation methods of natural gas methane number, but there are doubts about their reliability and the results differ from each other. No official regulation which states a minimum value for methane number of natural gas has been identified. A methane number of 80, as recommended by some organisations in Europe, would endanger the LNG supply to the market, limiting acceptable LNG sources, or would require expensive gas treatment. In the long term, if there is a market for high methane number natural gas, this may be an opportunity for LNG terminals able to adjust or manage supplies to the desired methane number

  12. Concentrations and composition profiles of parabens in currency bills and paper products including sanitary wipes. (United States)

    Liao, Chunyang; Kannan, Kurunthachalam


    Parabens (alkyl esters of p-hydroxybenzoic acid) are widely used as antimicrobial preservatives in personal care products, pharmaceuticals, and foodstuffs. Although parabens have been reported to be used as antimicrobials in certain types of papers (e.g., wet sanitary or hygiene wipes), little is known about the occurrence of these compounds in paper products. In this study, we determined the concentrations of six paraben analogs, methyl (MeP), ethyl (EtP), propyl (PrP), butyl (BuP), benzyl (BzP), and heptyl parabens (HepP), in 253 paper products divided into 18 categories, using liquid chromatography-tandem mass spectrometry (LC-MS/MS). At least one of the six parabens was detected in almost all (detection rate: 98%) paper samples, and the total concentrations (∑PBs; sum of six parabens) ranged from 1.85 to 3,220,000 ng/g (geometric mean (GM): 103; median: 55.1 ng/g). Sanitary wipes contained very high concentrations of ∑PBs (GM: 8300 ng/g). Paper currencies, tickets, business cards, food cartons, flyers, and newspapers contained notable concentrations of ∑PBs, and the GM concentrations in these paper categories were on the order of a few tens to thousands of nanograms per gram. One source of parabens in paper products is the use of these chemicals as antifungal agents. MeP and PrP were the predominant analogs, accounting for approximately 62% and 16% of the total concentrations of parabens, respectively. On the basis of measured concentrations and frequency of handling of paper products, we estimated the daily intake (EDI) of parabens through dermal absorption. The GM and 95th percentile EDI values were 6.31 and 2050 ng/day, respectively, for the general population. Among the paper categories analyzed, sanitary wipes contributed to the majority (>90%) of the exposures. Copyright © 2013 Elsevier B.V. All rights reserved.

  13. Electromagnetic Radiation : Variational Methods, Waveguides and Accelerators Including seminal papers of Julian Schwinger

    CERN Document Server

    Milton, Kimball A


    This is a graduate level textbook on the theory of electromagnetic radiation and its application to waveguides, transmission lines, accelerator physics and synchrotron radiation. It has grown out of lectures and manuscripts by Julian Schwinger prepared during the war at MIT's Radiation Laboratory, updated with material developed by Schwinger at UCLA in the 1970s and 1980s, and by Milton at the University of Oklahoma since 1994. The book includes a great number of straightforward and challenging exercises and problems. It is addressed to students in physics, electrical engineering, and applied mathematics seeking a thorough introduction to electromagnetism with emphasis on radiation theory and its applications.

  14. 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...

  15. Archigregarines of the English Channel revisited: New molecular data on Selenidium species including early described and new species and the uncertainties of phylogenetic relationships.

    Directory of Open Access Journals (Sweden)

    Sonja Rueckert

    Full Text Available Gregarines represent an important transition step from free-living predatory (colpodellids s.l. and/or photosynthetic (Chromera and Vitrella apicomplexan lineages to the most important pathogens, obligate intracellular parasites of humans and domestic animals such as coccidians and haemosporidians (Plasmodium, Toxoplasma, Eimeria, Babesia, etc.. While dozens of genomes of other apicomplexan groups are available, gregarines are barely entering the molecular age. Among the gregarines, archigregarines possess a unique mixture of ancestral (myzocytosis and derived (lack of apicoplast, presence of subpellicular microtubules features.In this study we revisited five of the early-described species of the genus Selenidium including the type species Selenidium pendula, with special focus on surface ultrastructure and molecular data. We were also able to describe three new species within this genus. All species were characterized at morphological (light and scanning electron microscopy data and molecular (SSU rDNA sequence data levels. Gregarine specimens were isolated from polychaete hosts collected from the English Channel near the Station Biologique de Roscoff, France: Selenidium pendula from Scolelepis squamata, S. hollandei and S. sabellariae from Sabellaria alveolata, S. sabellae from Sabella pavonina, Selenidium fallax from Cirriformia tentaculata, S. spiralis sp. n. and S. antevariabilis sp. n. from Amphitritides gracilis, and S. opheliae sp. n. from Ophelia roscoffensis. Molecular phylogenetic analyses of these data showed archigregarines clustering into five separate clades and support previous doubts about their monophyly.Our phylogenies using the extended gregarine sampling show that the archigregarines are indeed not monophyletic with one strongly supported clade of Selenidium sequences around the type species S. pendula. We suggest the revision of the whole archigregarine taxonomy with only the species within this clade remaining in the genus

  16. Analysis of scientific papers included in the sciences citation index expanded written by South korean plastic surgeons: 2001-2010. (United States)

    Go, Ju Young; Mun, Goo-Hyun; Jeon, Byung-Joon; Lim, So-Young; Pyon, Jai-Kyong; Bang, Sa-Ik; Oh, Kap Sung; Shin, Myoung-Soo


    The purpose of our study was to analyze scientific papers published by South Korean plastic surgeons in journals included in the Science Citation Index Expanded (SCIE), and to evaluate the publication and research activities of Korean plastic surgeon. We conducted a survey of SCIE papers in the field of plastic surgery published by South Korean authors between 2001 and 2010 using Web of Science software. We further analyzed these results according to the number of publications per year, journals, institution, and type of papers. We also compared the total number of citations to published scientific papers. We analyzed the rank of South Korea among other countries in representative journals. Overall, 667 papers were published by South Korean authors between 2001 and 2010. The number of publications increased dramatically from 2003 (n=31) to 2010 (n=139). Subsequently, the ten most productive Korean medical colleges were identified. All published papers received 2,311 citations and the citation to paper ratio was 3.49. The rank of Korea among other countries in terms of the number of published papers remained in the top 10 during the recent 10 years. Publication output of Korean plastic surgeon over the last 10 years showed a remarkable growth in terms of quantity and quality. Currently, Korea is among the top six countries in representative plastic surgery journals. Korean plastic surgeons have played a central role in this progress, and it is anticipated that they will continue to do so in the future.

  17. A two-dimensional model of the pressing section of a paper machine including dynamic capillary effects

    KAUST Repository

    Iliev, Oleg P.


    Paper production is a problem with significant importance for society; it is also a challenging topic for scientific investigation. This study is concerned with the simulation of the pressing section of a paper machine. A two-dimensional model is developed to account for the water flow within the pressing zone. A Richards-type equation is used to describe the flow in the unsaturated zone. The dynamic capillary pressure-saturation relation is adopted for the paper production process. The mathematical model accounts for the coexistence of saturated and unsaturated zones in a multilayer computational domain. The discretization is performed by the MPFA-O method. Numerical experiments are carried out for parameters that are typical of the production process. The static and dynamic capillary pressure-saturation relations are tested to evaluate the influence of the dynamic capillary effect. © 2013 Springer Science+Business Media Dordrecht.

  18. 76 FR 68510 - Grays Harbor Paper, LLC, Including on-site Workers From Barrier West, Inc., Hoquiam, WA; Amended... (United States)


    ... Employment and Training Administration Grays Harbor Paper, LLC, Including on-site Workers From Barrier West... Assistance and Alternative Trade Adjustment Assistance In accordance with Section 223 of the Trade Act of 1974 (19 U.S.C. 2273), and Section 246 of the Trade Act of 1974 (26 U.S.C. 2813), as amended, the...

  19. Oral health investigations of indigenous participants in remote settings: a methods paper describing the dental component of wave III of an Australian Aboriginal birth cohort study

    Directory of Open Access Journals (Sweden)

    Sayers Susan M


    Full Text Available Abstract Background A prospective Aboriginal Birth Cohort (ABC study has been underway in Australia's Northern Territory since 1987. Inclusion of oral epidemiological information in a follow-up study required flexible and novel approaches with unconventional techniques. Documenting these procedures may be of value to researchers interested in including oral health components in remotely-located studies. The objectives are to compare and describe dental data collection methods in wave III of the ABC study with a more conventional oral health investigation. Methods The Australian National Survey of Adult Oral Health (NSAOH was considered the 'conventional' study. Differences between this investigation and the dental component of the ABC study were assessed in terms of ethics, location, recruitment, consent, privacy, equipment, examination, clinical data collection and replication. In the ABC study, recording of clinical data by different voice recording techniques were described and assessed for ease-of-use portability, reliability, time-efficiency and cost-effectiveness. Results Conventional investigation recruitment was by post and telephone. Participants self presented. Examinations took place in dental clinics, using customised dental chairs with standard dental lights attached. For all examinations, a dental assistant recorded dental data directly onto a laptop computer. By contrast, follow-up of ABC study participants involved a multi-phase protocol with reliance on locally-employed Indigenous advocates bringing participants to the examination point. Dental examinations occurred in settings ranging from health centre clinic rooms to improvised spaces outdoors. The dental chair was a lightweight, portable reclining camp chair and the dental light a fire-fighter's head torch with rechargeable batteries. The digital voice recorder was considered the most suitable instrument for clinical dental data collection in the ABC study in comparison with

  20. 75 FR 71427 - Domtar Paper Company, LLC; Supplemental Notice That Initial Market-Based Rate Filing Includes... (United States)


    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. ER11-2020-000] Domtar Paper... proceeding, of Domtar Paper Company, LLC's application for market-based rate authority, with an accompanying... of protests and interventions in lieu of paper, using the FERC Online links at

  1. Analysis of scientific papers in the field of radiology and medical imaging included in Science Citation Index expanded and published by Turkish authors. (United States)

    Akpinar, Erhan; Karçaaltincaba, Muşturay


    We aimed to analyze scientific papers published by Turkish authors in "radiology, nuclear medicine and medical imaging" journals included in the Science Citation Index Expanded and compared the number of published scientific papers from Turkey and other countries. We retrospectively searched all papers published by Turkish authors between 1945 and 2008 by using Web of Science software. We performed the analysis by typing "Turkey" in the address section and all radiology and medical imaging journals in the source title section using the general search function of the software. We further analyzed these results by using "analyze" function of the software according to the number of publications per year, journals, institution and type of papers. We also calculated total number of citations to published scientific papers using citation report function. We analyzed the rank of Turkey among other countries in terms of the number of published papers. Overall, 4,532 papers were published between 1945 and 2008. The first paper was published in 1976. Number of publications increased dramatically from 1976 (n = 1) to 2008 (n = 383). The top 5 journals publishing papers from Turkish authors were European Journal of Nuclear Medicine and Molecular Imaging (n = 328), Clinical Nuclear Medicine (n = 296), European Journal of Radiology (n = 289), European Radiology (n = 207) and Journal of Clinical Ultrasound (n = 186). All published papers received 18,419 citations and citation to paper ratio was 4.06. The rank of Turkey among other countries in terms of published papers improved during the last 25 years. Number of papers from Turkey published in radiology and medical imaging journals has increased at the start of the new millennium. Currently, Turkey is among the top 12 countries when the number of scientific papers published in radiology journals is taken into consideration.

  2. Representing and organizing information to describe the lived experience of health from a personal factors perspective in the light of the International Classification of Functioning, Disability and Health (ICF): a discussion paper. (United States)

    Geyh, Szilvia; Schwegler, Urban; Peter, Claudio; Müller, Rachel


    To discuss the representation and organization of information describing persons' lived experience of health from a personal factors perspective in the light of the International Classification of Functioning, Disability and Health, using spinal cord injury as a case in point for disability. The scientific literature was reviewed, discussion rounds conducted, and qualitative secondary analyses of data carried out using an iterative inductive-deductive approach. Conceptual considerations are explicated that distinguish the personal factors perspective from other components of the International Classification of Functioning, Disability and Health. A representation structure is developed that organizes health-related concepts describing the internal context of functioning. Concepts are organized as individual facts, subjective experiences, and recurrent patterns of experience and behavior specifying 7 areas and 211 concept groups. The article calls for further scientific debate on the perspective of personal factors in the light of the International Classification of Functioning, Disability and Health. A structure that organizes concepts in relation to a personal factors perspective can enhance the comprehensiveness, transparency and standardization of health information, and contribute to the empowerment of persons with disabilities. Implications for rehabilitation The present study collected data from scientific literature reviews, discussion rounds and qualitative secondary analyses in order to develop a representation and organization of information describing persons' lived experience of health from a personal factors perspective in the light of the International Classification of Functioning, Disability and Health. The following representation structure for health-related information from a personal factors perspective was developed: (i) Individuals facts (i.e., socio-demographical factors, position in the immediate social and physical context, personal history

  3. Pharmacobezoars described and demystified. (United States)

    Simpson, Serge-Emile


    A bezoar is a concretion of foreign material that forms and persists in the gastrointestinal tract. Bezoars are classified by their material origins. Phytobezoars contain plant material, trichobezoars contain hair, lactobezoars contain milk proteins, and pharmacobezoars contain pharmaceutical products. Tablets, suspensions, and even insoluble drug delivery vehicles can, on rare occasions, and sometimes under specific circumstances, form pharmacobezoars. The goal of this review is to catalog and examine all of the available reports in the English language medical literature that convincingly describe the formation and management of pharmacobezoars. Articles included in this review were identified by performing searches using the terms "bezoar," "pharmacobezoar," and "concretion" in the following databases: OVID MEDLINE, PubMed, and JSTOR. The complete MEDLINE and JSTOR holdings were included in the search without date ranges. The results were limited to English language publications. Articles that described nonmedication bezoars were not included in the review. Articles describing phytobezoars, food bezoars, fecal impactions, illicit drug packet ingestions, enteral feeding material bezoars, and hygroscopic diet aid bezoars were excluded. The bibliographic references within the articles already accumulated were then examined in order to gather additional pharmacobezoar cases. The cases are grouped by pharmaceutical agent that formed the bezoar, and groupings are arranged in alphabetical order. Discussions and conclusions specific to each pharmaceutical agent are included in that agent's subheading. Patterns and themes that emerged in the review of the assembled case reports are reviewed and presented in a more concise format. Pharmacobezoars form under a wide variety of circumstances and in a wide variety of patients. They are difficult to diagnose reliably. Rules for suspecting, diagnosing, and properly managing a pharmacobezoar are highly dependent on the

  4. ESCo for mutual benefit and free energy saving. White paper 1. Including five cases and tips from experts; ESCo voor wederzijds voordeel en gratis energiebesparing. White paper 1. Inclusief vijf cases en experttips

    Energy Technology Data Exchange (ETDEWEB)



    This white paper provides insight into the operation, options and restrictions of ESCo's (Energy Service Companies). The different variants of a relatively simple ESCo-product to an advanced ESCo-project are described and illustrated with examples from practice. Tips from experts can help with the assessment whether entering into a partnership with an ESCo is attractive enough [Dutch] Deze whitepaper geeft inzicht in de werking, mogelijkheden en beperkingen van ESCo's (Energy Service Companies). De verschillende varianten, van een relatief eenvoudige product-ESCo tot een geavanceerde project-ESCo worden beschreven en geillustreerd aan de hand van praktijkvoorbeelden. Tips van expert helpen met de inschatting of het aangaan van een samenwerkingsverband met een ESCo aantrekkelijk is.

  5. Persistence Statements: Describing Digital Stickiness

    Directory of Open Access Journals (Sweden)

    John Kunze


    Full Text Available In this paper we present a draft vocabulary for making “persistence statements.” These are simple tools for pragmatically addressing the concern that anyone feels upon experiencing a broken web link. Scholars increasingly use scientific and cultural assets in digital form, but choosing which among many objects to cite for the long term can be difficult. There are few well-defined terms to describe the various kinds and qualities of persistence that object repositories and identifier resolvers do or don’t provide. Given an object’s identifier, one should be able to query a provider to retrieve human- and machine-readable information to help judge the level of service to expect and help gauge whether the identifier is durable enough, as a sort of long-term bet, to include in a citation. The vocabulary should enable providers to articulate persistence policies and set user expectations.

  6. Alkaline "Permanent" Paper. (United States)

    Pacey, Antony


    Discussion of paper manufacturing processes and their effects on library materials focuses on the promotion of alkaline "permanent" paper, with less acid, by Canadian library preservation specialists. Standards for paper acidity are explained; advantages of alkaline paper are described, including decreased manufacturing costs; and…

  7. The British research evidence for recovery, papers published between 2006 and 2009 (inclusive). Part two: a review of the grey literature including book chapters and policy documents. (United States)

    Stickley, T; Wright, N


    This paper is the second in a series of two which reviews the current UK evidence base for recovery in mental health. As outlined in the previous paper, over the last 4 years a vast amount has written about recovery in mental health (approximately 60% of all articles). Whereas the first review focused on the peer-reviewed evidence; this paper specifically focuses on the grey/non-peer-reviewed literature. In total, our search strategy yielded the following: 3 books, a further 11 book chapters, 12 papers, 6 policy documents and 3 publications from voluntary sector organizations. Each group of publications was analysed for content, and they are discursively presented by publication group. The findings are then presented as themes in the discussion section. The themes are: social, historical and political critique; philosophy of hope for the individual; individual identity and narrative; models and guidance for mental health practice. We conclude that there is a need for both empirical research into recovery and a clearer theoretical exposition of the concept. © 2010 Blackwell Publishing.

  8. Determination on Whether Specialty Minerals Inc. Must be Included in the Simpson Paper Company Shasta Mill Application for a Title V Operating Permit as a Support Facility. (United States)

    This document may be of assistance in applying the Title V air operating permit regulations. This document is part of the Title V Policy and Guidance Database available at Some documents in the database are a scanned or retyped version of a paper photocopy of the original. Although we have taken considerable effort to quality assure the documents, some may contain typographical errors. Contact the office that issued the document if you need a copy of the original.

  9. [Deep mycoses rarely described]. (United States)

    Charles, D


    Beside deep mycoses very well known: histoplasmosis, candidosis, cryptococcosis, there are other mycoses less frequently described. Some of them are endemic in some countries: South American blastomycosis in Brazil, coccidioidomycosis in California; some others are cosmopolitan and may affect everyone: sporotrichosis, or may affect only immunodeficient persons: mucormycosis. They do not spare Africa, we may encounter basidiobolomycosis, rhinophycomycosis, dermatophytosis, sporotrichosis and, more recently reported, rhinosporidiosis. Important therapeutic progresses have been accomplished with amphotericin B and with antifungus imidazole compounds (miconazole and ketoconazole). Surgical intervention is sometime recommended in chromomycosis and rhinosporidiosis.

  10. This paper describes farmer's perception towards potential adoption

    African Journals Online (AJOL)



    Dec 23, 2013 ... We assessed the perception of farmers towards potential adoption of genetic modification (GM) technology for improving health, food security and agricultural productivity using a semi-structured interview. A total sample of 54 small-scale farmers participated in 6 focus group meetings (FGMs) and.

  11. Defense Manpower Commission Staff Studies and Supporting Papers. Volume 2. The Total Force and Its Manpower Requirements Including Overviews of Each Service (United States)


    III, DMC Filial Report.) E. MANPOWER BUDCETINC WITHIN THE DEPARTMENT OF DEFENSE, by Audrey J. Page. (Related to Chapter III, DMC Final Report.) F...y *i E»V ■ X 1 m -10- Maneuver battalions (counting other non-dlvlslonal combat unlta of Amor and Infantry aa wall at thoaa Included In tht... Amor Schools, wiU continue In those "school troop" roles at Fort Banning and Fort Knox, respectively. Additionally, there are soae very serious

  12. Describing to compute

    Directory of Open Access Journals (Sweden)

    Adriana Rossi


    Full Text Available In this paper the advantages due to the possibility of generating complex surfaces starting from bi-dimensional geometries by means of CAD softwares are discussed. Two case studies are presented to show the hypothetical variation of three primary choice cycles. The study of basic geometries (a, paths where the geometries are swept along (b, places occupied by the sections lofting the paths (c. The strong innovation contained in the continuity of invention process is deeply appreciated. This is especially true when that process is not the result of habit and finds its roots in the principles and in the criteria of geometry. Nothing is left to improvisation in this discipline: every concept is based on mathematical calculus.

  13. How Mathematics Describes Life (United States)

    Teklu, Abraham


    The circle of life is something we have all heard of from somewhere, but we don't usually try to calculate it. For some time we have been working on analyzing a predator-prey model to better understand how mathematics can describe life, in particular the interaction between two different species. The model we are analyzing is called the Holling-Tanner model, and it cannot be solved analytically. The Holling-Tanner model is a very common model in population dynamics because it is a simple descriptor of how predators and prey interact. The model is a system of two differential equations. The model is not specific to any particular set of species and so it can describe predator-prey species ranging from lions and zebras to white blood cells and infections. One thing all these systems have in common are critical points. A critical point is a value for both populations that keeps both populations constant. It is important because at this point the differential equations are equal to zero. For this model there are two critical points, a predator free critical point and a coexistence critical point. Most of the analysis we did is on the coexistence critical point because the predator free critical point is always unstable and frankly less interesting than the coexistence critical point. What we did is consider two regimes for the differential equations, large B and small B. B, A, and C are parameters in the differential equations that control the system where B measures how responsive the predators are to change in the population, A represents predation of the prey, and C represents the satiation point of the prey population. For the large B case we were able to approximate the system of differential equations by a single scalar equation. For the small B case we were able to predict the limit cycle. The limit cycle is a process of the predator and prey populations growing and shrinking periodically. This model has a limit cycle in the regime of small B, that we solved for

  14. Paper Analogies Enhance Biology Teaching. (United States)

    Stencel, John E.


    Describes how to use paper analogies as models to illustrate various concepts in biology, human anatomy, and physiology classes. Models include biochemical paper models, protein papergrams, a paper model of early brain development, and a 3-D paper model of a eukaryotic cell. (AIM)

  15. This paper describes 14 Colombian web based “edu-communicational” projects. The aim is to analyze different types of platforms, different type of use and the elements that facilitate interaction with final users. The study sample is composed of three main

    Directory of Open Access Journals (Sweden)

    Tomás Durán Becerra


    Full Text Available This paper describes 14 Colombian web based “edu-communicational” projects. The aim is to analyze different types of platforms, different type of use and the elements that facilitate interaction with final users. The study sample is composed of three main categories of sites: formal education sites, informal education sites and other types of sites that contain some kind of educational content. The research establishes different variables aimed at discovering educommunicative tools. Both the theoretical framework and the conceptual approach to edu-communication, as well as the methodological proposal applied are retrieved from the works of De Oliveira (2009, Freire (2002, Barbas Coslado (2012, Pérez-Tornero (2004, Tejedor (2010, Said and Arcila (2011a and O’Reilly (2009, among others. In conclusion, the article shows similarities and differences among the platforms that shape the online edu-communicational landscape in Colombia.

  16. Five Describing Factors of Dyslexia (United States)

    Tamboer, Peter; Vorst, Harrie C. M.; Oort, Frans J.


    Two subtypes of dyslexia (phonological, visual) have been under debate in various studies. However, the number of symptoms of dyslexia described in the literature exceeds the number of subtypes, and underlying relations remain unclear. We investigated underlying cognitive features of dyslexia with exploratory and confirmatory factor analyses. A…

  17. Procedure to describe clavicular motion. (United States)

    Gutierrez Delgado, Guivey; De Beule, Matthieu; Ortega Cardentey, Dolgis R; Segers, Patrick; Iznaga Benítez, Arsenio M; Rodríguez Moliner, Tania; Verhegghe, Benedict; Palmans, Tanneke; Van Hoof, Tom; Van Tongel, Alexander


    For many years, researchers have attempted to describe shoulder motions by using different mathematical methods. The aim of this study was to describe a procedure to quantify clavicular motion. The procedure proposed for the kinematic analysis consists of 4 main processes: 3 transcortical pins in the clavicle, motion capture, obtaining 3-dimensional bone models, and data processing. Clavicular motion by abduction (30° to 150°) and flexion (55° to 165°) were characterized by an increment of retraction of 27° to 33°, elevation of 25° to 28°, and posterior rotation of 14° to 15°, respectively. In circumduction, clavicular movement described an ellipse, which was reflected by retraction and elevation. Kinematic analysis shows that the articular surfaces move by simultaneously rolling and sliding on the convex surface of the sternum for the 3 movements of abduction, flexion, and circumduction. The use of 3 body landmarks in the clavicle and the direct measurement of bone allowed description of the osteokinematic and arthrokinematic movement of the clavicle. Copyright © 2017 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.

  18. Biofilm carrier migration model describes reactor performance. (United States)

    Boltz, Joshua P; Johnson, Bruce R; Takács, Imre; Daigger, Glen T; Morgenroth, Eberhard; Brockmann, Doris; Kovács, Róbert; Calhoun, Jason M; Choubert, Jean-Marc; Derlon, Nicolas


    The accuracy of a biofilm reactor model depends on the extent to which physical system conditions (particularly bulk-liquid hydrodynamics and their influence on biofilm dynamics) deviate from the ideal conditions upon which the model is based. It follows that an improved capacity to model a biofilm reactor does not necessarily rely on an improved biofilm model, but does rely on an improved mathematical description of the biofilm reactor and its components. Existing biofilm reactor models typically include a one-dimensional biofilm model, a process (biokinetic and stoichiometric) model, and a continuous flow stirred tank reactor (CFSTR) mass balance that [when organizing CFSTRs in series] creates a pseudo two-dimensional (2-D) model of bulk-liquid hydrodynamics approaching plug flow. In such a biofilm reactor model, the user-defined biofilm area is specified for each CFSTR; thereby, X carrier does not exit the boundaries of the CFSTR to which they are assigned or exchange boundaries with other CFSTRs in the series. The error introduced by this pseudo 2-D biofilm reactor modeling approach may adversely affect model results and limit model-user capacity to accurately calibrate a model. This paper presents a new sub-model that describes the migration of X carrier and associated biofilms, and evaluates the impact that X carrier migration and axial dispersion has on simulated system performance. Relevance of the new biofilm reactor model to engineering situations is discussed by applying it to known biofilm reactor types and operational conditions.

  19. Completely Described Undirected Graph Structure

    Directory of Open Access Journals (Sweden)

    G. S. Ivanova


    Full Text Available The objects of research are undirected graphs. The paper considers a problem of their isomorphism. A literature analysis of its solution, has shown that there is no way to define a complete graph invariant in the form of unique structural characteristics of each its vertex, which has a computational complexity of definition better than О (n 4 .The work objective is to provide the characteristics of the graph structure, which could be used to solve the problem of their isomorphism for a time better than О (n 4 . As such characteristics, the paper proposes to use the set of codes of tree roots of all the shortest - in terms of the number of edges - paths from each vertex to the others, uniquely defining the structure of each tree. It proves the theorem that it is possible to reduce the problem of isomorphism of the undirected graphs to the isomorphism problem of their splitting into the trees of all the shortest - in terms of the number of edges - paths of each vertex to the others. An algorithm to construct the shortest paths from each vertex to all others and to compute codes of their vertices has been developed. As the latter, are used Aho-codes, which find application in recognising the isomorphism of trees. The computational complexity to obtain structural characteristics of vertices has been estimated to be about О (n 3 .The pilot studies involved the full-scale experiment using the developed complex programmes to generate raw data, i.e. analytic representation of the graph with the number of vertices equal to 1200, and a programme to provide codes of the tree roots. To have an estimate of - "the worst" in terms of time - complexity of expansion algorithm of graphs into trees of the shortest paths and define the codes of their roots has been an experimentally studied how the number of tree vertices depends on the graph density. For the worst case was obtained a dependence of the number of tree vertices on the number of graph vertices

  20. Model describes subsea control dynamics

    Energy Technology Data Exchange (ETDEWEB)


    A mathematical model of the hydraulic control systems for subsea completions and their umbilicals has been developed and applied successfully to Jabiru and Challis field production projects in the Timor Sea. The model overcomes the limitations of conventional linear steady state models and yields for the hydraulic system an accurate description of its dynamic response, including the valve shut-in times and the pressure transients. Results of numerical simulations based on the model are in good agreement with measurements of the dynamic response of the tree valves and umbilicals made during land testing.

  1. Children describe life after Hurricane Andrew. (United States)

    Coffman, S


    Hurricane Andrew, which devastated the south Florida coast in August 1992, left over 250,000 people homeless with multiple health and social problems. This nursing study explored the experiences of 17 children, ages 5 through 12, who lived in the geographic area of storm damage. Common experiences described by the children included remembering the storm, dealing with after-effects, and reestablishing a new life. In general, children described a sense of strangeness, articulated as "life is weird" after the hurricane. In addition to stressful responses, many positive reactions were described by children in the study, revealing that the disaster also had a maturing effect.

  2. Grays Harbor Paper

    Energy Technology Data Exchange (ETDEWEB)

    Quigg, B. [Grays Harbor Paper, Hoquiam, WA (United States)


    Wood waste biomass boilers are used at Grays Harbor Paper in Hoquiam, Washington. This presentation showed that large volumes of biomass are left after a traditional clearcut. The opportunities and challenges of collecting branches, tops and stumps from this wet coastal climate were outlined. The paper described some of the low-tech methods for picking up branches, stumps and woody debris. It included several photographs of custom logging machines for timber harvest, including a brush grapple slasher, a shearer shovel, chippers, grinders, slicesaws, trucks, trailers and caterpillar log loaders for handling slash. The slash recovery program relies on innovative harvesting machines that convert scattered logging slash into bundles that can be easily collected, transported, and stored for use in existing facilities that utilize wood fiber for fuel. figs.

  3. Statistical Methods for Describing Developmental Patterns. (United States)

    Burchinal, Margaret R.


    Describes a variety of analytic tools available to address questions about development, including growth-curve methods, hierarchical regressions, and both primary and secondary data analysis of project and extant data. Demonstrates some of these techniques using extant data from two projects to examine questions about treatment efficacy and…

  4. Audio Papers

    DEFF Research Database (Denmark)

    Groth, Sanne Krogh; Samson, Kristine


    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...

  5. Generating and Describing Affective Eye Behaviors (United States)

    Mao, Xia; Li, Zheng

    The manner of a person's eye movement conveys much about nonverbal information and emotional intent beyond speech. This paper describes work on expressing emotion through eye behaviors in virtual agents based on the parameters selected from the AU-Coded facial expression database and real-time eye movement data (pupil size, blink rate and saccade). A rule-based approach to generate primary (joyful, sad, angry, afraid, disgusted and surprise) and intermediate emotions (emotions that can be represented as the mixture of two primary emotions) utilized the MPEG4 FAPs (facial animation parameters) is introduced. Meanwhile, based on our research, a scripting tool, named EEMML (Emotional Eye Movement Markup Language) that enables authors to describe and generate emotional eye movement of virtual agents, is proposed.

  6. Parameters Describing Earth Observing Remote Sensing Systems (United States)

    Zanoni, Vicki; Ryan, Robert E.; Pagnutti, Mary; Davis, Bruce; Markham, Brian; Storey, Jim


    The Earth science community needs to generate consistent and standard definitions for spatial, spectral, radiometric, and geometric properties describing passive electro-optical Earth observing sensors and their products. The parameters used to describe sensors and to describe their products are often confused. In some cases, parameters for a sensor and for its products are identical; in other cases, these parameters vary widely. Sensor parameters are bound by the fundamental performance of a system, while product parameters describe what is available to the end user. Products are often resampled, edge sharpened, pan-sharpened, or compressed, and can differ drastically from the intrinsic data acquired by the sensor. Because detailed sensor performance information may not be readily available to an international science community, standardization of product parameters is of primary performance. Spatial product parameters described include Modulation Transfer Function (MTF), point spread function, line spread function, edge response, stray light, edge sharpening, aliasing, ringing, and compression effects. Spectral product parameters discussed include full width half maximum, ripple, slope edge, and out-of-band rejection. Radiometric product properties discussed include relative and absolute radiometry, noise equivalent spectral radiance, noise equivalent temperature diffenence, and signal-to-noise ratio. Geometric product properties discussed include geopositional accuracy expressed as CE90, LE90, and root mean square error. Correlated properties discussed include such parameters as band-to-band registration, which is both a spectral and a spatial property. In addition, the proliferation of staring and pushbroom sensor architectures requires new parameters to describe artifacts that are different from traditional cross-track system artifacts. A better understanding of how various system parameters affect product performance is also needed to better ascertain the

  7. Paper electronics. (United States)

    Tobjörk, Daniel; Österbacka, Ronald


    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. Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  8. Using fundamental equations to describe basic phenomena

    DEFF Research Database (Denmark)

    Jakobsen, Arne; Rasmussen, Bjarne D.


    When the fundamental thermodynamic balance equations (mass, energy, and momentum) are used to describe the processes in a simple refrigeration system, then one finds that the resulting equation system will have a degree of freedom equal to one. Further investigations reveal that it is the equation...... and subcooling are introduced. Since the degree of freedom was equal to one, using both the superheat and subcooling require that one of the fundamental equations must be omitted from the equation system.The main purpose of the paper is to clarify the relation between the fundamental balance equations...

  9. How to read a research paper. (United States)

    Cohen, H


    A research paper includes several sections, each section having a particular purpose and containing a particular kind of information. This paper is a guide to reading a research paper. It describes the prototypical research paper and explains the purpose for each section. Issues for the astute reader to note are indicated and illustrated with examples from a research paper published in this issue of the journal.

  10. Describing Spirituality at the End of Life. (United States)

    Stephenson, Pam Shockey; Berry, Devon M


    Spirituality is salient to persons nearing the end of life (EOL). Unfortunately, researchers have not been able to agree on a universal definition of spirituality reducing the effectiveness of spiritual research. To advance spiritual knowledge and build an evidence base, researchers must develop creative ways to describe spirituality as it cannot be explicitly defined. A literature review was conducted to determine the common attributes that comprise the essence of spirituality, thereby creating a common ground on which to base spiritual research. Forty original research articles (2002 to 2012) focusing on EOL and including spiritual definitions/descriptions were reviewed. Analysis identified five attributes that most commonly described the essence of spirituality, including meaning, beliefs, connecting, self-transcendence, and value. © The Author(s) 2014.

  11. Papers on vehicle size : cars and trucks (United States)


    The four papers in this volume describe analyses of car size : trends and truck occupant injuries and fatalities. All four were : written between June 1985 and December 1987. The topics : addressed include where heavy truck accidents occur, injury an...

  12. How do consumers describe wine astringency? (United States)

    Vidal, Leticia; Giménez, Ana; Medina, Karina; Boido, Eduardo; Ares, Gastón


    Astringency is one of the most important sensory characteristics of red wine. Although a hierarchically structured vocabulary to describe the mouthfeel sensations of red wine has been proposed, research on consumers' astringency vocabulary is lacking. In this context, the aim of this work was to gain an insight on the vocabulary used by wine consumers to describe the astringency of red wine and to evaluate the influence of wine involvement on consumers' vocabulary. One hundred and twenty-five wine consumers completed and on-line survey with five tasks: an open-ended question about the definition of wine astringency, free listing the sensations perceived when drinking an astringent wine, free listing the words they would use to describe the astringency of a red wine, a CATA question with 44 terms used in the literature to describe astringency, and a wine involvement questionnaire. When thinking about wine astringency consumers freely elicited terms included in the Mouth-feel Wheel, such as dryness and harsh. The majority of the specific sub-qualities of the Mouth-feel Wheel were not included in consumer responses. Also, terms not classified as astringency descriptors were elicited (e.g. acid and bitter). Only 17 out of the 31 terms from the Mouth-feel Wheel were used by more than 10% of participants when answering the CATA question. There were no large differences in the responses of consumer segments with different wine involvement. Results from the present work suggest that most of the terms of the Mouth-feel Wheel might not be adequate to communicate the astringency characteristics of red wine to consumers. Copyright © 2015 Elsevier Ltd. All rights reserved.

  13. Paper Pulp Panoply. (United States)

    Marque, Margo E.


    Explains that creating paper-pulp bowls is designed to acquaint students with the beginning vocabulary and finger dexterity needed to sculpt clay. Describes the process of making paper-pulp bowls and identifies important vocabulary words. Provides directions for making paper bowl forms and lists the materials. (CMK)

  14. Does Guru Granth Sahib describe depression? (United States)

    Kalra, Gurvinder; Bhui, Kamaldeep; Bhugra, Dinesh


    Sikhism is a relatively young religion, with Guru Granth Sahib as its key religious text. This text describes emotions in everyday life, such as happiness, sadness, anger, hatred, and also more serious mental health issues such as depression and psychosis. There are references to the causation of these emotional disturbances and also ways to get out of them. We studied both the Gurumukhi version and the English translation of the Guru Granth Sahib to understand what it had to say about depression, its henomenology, and religious prescriptions for recovery. We discuss these descriptions in this paper and understand its meaning within the context of clinical depression. Such knowledge is important as explicit descriptions about depression and sadness can help encourage culturally appropriate assessment and treatment, as well as promote public health through education.

  15. On Redundancy in Describing Linguistic Systems

    Directory of Open Access Journals (Sweden)

    Vladimir Borissov Pericliev


    Full Text Available On Redundancy in Describing Linguistic Systems The notion of system of linguistic elements figures prominently in most post-Saussurian linguistics up to the present. A “system” is the network of the contrastive (or, distinctive features each element in the system bears to the remaining elements. The meaning (valeur of each element in the system is the set of features that are necessary and jointly sufficient to distinguish this element from all others. The paper addresses the problems of “redundancy”, i.e. the occurrence of features that are not strictly necessary in describing an element in a system. Redundancy is shown to smuggle into the description of linguistic systems, this infelicitous practice illustrated with some examples from the literature (e.g. the classical phonemic analysis of Russian by Cherry, Halle, and Jakobson, 1953. The logic and psychology of the occurrence of redundancy are briefly sketched and it is shown that, in addition to some other problems, redundancy leads to a huge and unresolvable ambiguity of descriptions of linguistic systems (the Buridan’s ass problem.

  16. Mathematical papers

    CERN Document Server

    Green, George


    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

  17. Philosophical Papers

    African Journals Online (AJOL)

    Philosophical Papers is a generalist journal of philosophy edited in the Department of Philosophy at Rhodes University. The journal appears three times a year; the November issue of every year is topic-based and guest-edited. The journal is published by Routledge (Taylor & Francis). Information regarding submissions ...

  18. Historical Paper

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 23; Issue 1. Historical Paper: On Simple Gas Reactions by H Eyring and M Polanyi. Classics Volume 23 Issue 1 January 2018 pp 103-128. Fulltext. Click here to view fulltext PDF. Permanent link: ...

  19. Panama Papers

    DEFF Research Database (Denmark)

    Harrington, Brooke


    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...

  20. Paper works

    DEFF Research Database (Denmark)

    Rasmussen, Mattias Borg


    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...... history writing....

  1. Summary of papers included within this commemorative issue

    Czech Academy of Sciences Publication Activity Database

    Roček, Zbyněk


    Roč. 72, 1/2 (2016), s. 15-16 ISSN 2533-4050 Institutional support: RVO:67985831 Keywords : paleontology * summmary Subject RIV: DB - Geology ; Mineralogy

  2. Sizewell papers

    International Nuclear Information System (INIS)



    A collection of papers, previously published in the New Scientist between September 1980 and January 1983, dealing with the pressurised water reactor and in particular the proposal by CEGB to build a PWR at Sizewell, Suffolk, is presented. The individual papers are entitled: American reactors are wrong for Britain; Britain's first pressurised-water reactor; a test bed for nuclear safety; the pressure on nuclear safety; Suffolk - a soft touch for PWRs; why Britain needs a PWR; critical time for Sizewell's reactor; why Britain does not need a PWR; a reactor designed for Sizewell; a case not proven; lessons from Three Mile Island; how France went nuclear; an environmentalist's case for the Sizewell PWR. (U.K.)

  3. The hidden research paper. (United States)

    Horton, Richard


    To determine whether the views expressed in a research paper are accurate representations of contributors' opinions about the research being reported. Purposive sampling of 10 research articles published in The Lancet; qualitative analysis of answers to 6 questions about the meaning of the study put to contributors who were listed on the byline of these articles. Fifty-four contributors listed on the bylines of the 10 articles were evaluated, and answers to questions were compared between contributors within research groups and against the published research report. A total of 36 (67%) of 54 contributors replied to this survey. Important weaknesses were often admitted on direct questioning but were not included in the published article. Contributors frequently disagreed about the importance of their findings, implications, and directions for future research. I could find no effort to study systematically past evidence relating to the investigators' own findings in either survey responses or the published article. Overall, the diversity of contributor opinion was commonly excluded from the published report. I found that discussion sections were haphazardly organized and did not deal systematically with important questions about the study. A research paper rarely represents the opinions of those scientists whose work it reports. The findings described herein reveal evidence of (self-)censored criticism, obscured meanings, confused assessment of implications, and failures to indicate directions for future research. There is now empirical support for the introduction of structured discussion sections in research papers. Editors might also explore ways to recover the plurality of contributors' opinions.

  4. Selected papers

    CERN Document Server

    Elgot, Calvin C


    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...

  5. Describing the learning curve for bulbar urethroplasty. (United States)

    Spilotros, Marco; Malde, Sachin; Greenwell, Tamsin J


    Learning curves have been described for a number of urological procedures including radical prostatectomy and laparoscopic nephrectomy but rarely for urethroplasty. We describe the learning curve for bulbar urethroplasty in a single surgeon series. A retrospective case note review was performed of 91 consecutive men median age 32 years (range, 15-66 years) having bulbar urethroplasty performed by a single surgeon. Data was collected on type of urethroplasty, restricture rate (as defined by urethrogram and/or flow rate) and duration of follow up. The restricture rates were compared by quartiles and statistical analysis was by ¦Ö 2 between the first and fourth quartiles. The 91 men had 42 dorsal onlay buccal mucosal graft (Dorsal BMG), 20 BMG augmented bulbobulbar anastomotic (Augmented Rooftop) and 29 bulbobulbar anastomotic (BBA) urethroplasties performed. Median follow up was 39 months for the first quartile, 42 months for the second, 36 months for the third, and 35 months for the fourth. The restricture rate was 17% in the first quartile, 8.7% in the second and third quartiles and 4.5% in the fourth quartile. There were no restrictures noted after 24 months. There were 4 restrictures in the first quartile and 1 restricture in the fourth quartile (¦Ö 2 Plearning curve for bulbar urethroplasty with a reduced restricture rate each quartile and it may take as many as 90 cases to reach optimum restricture rates.

  6. Sri Lanka; Background Papers


    International Monetary Fund


    This Background Paper on Sri Lanka provides information on the economic developments during 1992–95. Developments in the domestic and external sectors are discussed. The deficiencies of the official consumer price index that resulted in a substantial understatement of inflation performance in 1994 and alternative estimates of underlying inflation are described. The structural rigidities in the labor market that perpetuate high unemployment and limit job growth are also described. The paper al...

  7. Research Paper

    African Journals Online (AJOL)

    Prof. Adewunmi

    Biofilms in drinking water distribution system has generated health concerns. Biofilms are coating of organic and inorganic materials in pipes that can harbor, protect and allow the proliferation of several bacterial pathogens, including Legionella and Mycobacterium avium complex (MAC). Factors that affect bacterial growth ...

  8. Research Paper

    African Journals Online (AJOL)

    Prof. Adewunmi

    including endocarditis, osteomyelitis, toxic-shock syndrome, pneumonia, food poisoning and carbuncles. These infections can occur in wounds or skin, burns and ... four months from July to October 2006 in Amravati city and processed for isolation of bacterial pathogens and MRSA. A total of 75 mobile phone swab samples ...

  9. The Mock Research Paper (United States)

    Clark, Carlton


    The mock research paper combines creative writing with academic writing and, in the process, breaks down that binary. This article describes a writing assignment that offers an introduction to the college research paper genre. This assignment helps students focus on crafting an argument and learning genre conventions while postponing until the…

  10. Design paper

    DEFF Research Database (Denmark)

    Krogh, Jesper; Petersen, Lone; Timmermann, Michael


    /unemployed) and the tertiary outcomes consist of biological responses. DESIGN: The trial is designed as a randomized, parallel-group, observer-blinded clinical trial. Patients are recruited through general practitioners and psychiatrist and randomized to three different interventions: 1) non-aerobic, -- progressive resistance....... The trial is designed to include 45 patients in each group. Statistical analysis will be done as intention to treat (all randomized patients). Results from the DEMO trial will be reported according to the CONSORT guidelines in 2008-2009....

  11. Selected papers

    CERN Document Server

    Tamm, I E; Frenkel, V Ya


    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.

  12. All-printed paper memory

    KAUST Repository

    He, Jr-Hau


    All-printed paper-based substrate memory devices are described. In an embodiment, a paper-based memory device is prepared by coating one or more areas of a paper substrate with a conductor material such as a carbon paste, to form a first electrode of a memory, depositing a layer of insulator material, such as titanium dioxide, over one or more areas of the conductor material, and depositing a layer of metal over one or more areas of the insulator material to form a second electrode of the memory. In an embodiment, the device can further include diodes printed between the insulator material and the second electrode, and the first electrode and the second electrodes can be formed as a crossbar structure to provide a WORM memory. The various layers and the diodes can be printed onto the paper substrate by, for example, an ink jet printer.

  13. Plans should abstractly describe intended behavior

    Energy Technology Data Exchange (ETDEWEB)

    Pfleger, K.; Hayes-Roth, B. [Stanford Univ., CA (United States)


    Planning is the process of formulating a potential course of action. How courses of action (plans) produced by a planning module are represented and how they are used by execution-oriented modules of a complex agent to influence or dictate behavior are critical architectural issues. In contrast to the traditional model of plans as executable programs that dictate precise behaviors, we claim that autonomous agents inhabiting dynamic, unpredictable environments can make better use of plans that only abstractly describe their intended behavior. Such plans only influence or constrain behavior, rather than dictating it. This idea has been discussed in a variety of contexts, but it is seldom incorporated into working complex agents. Experiments involving instantiations of our Adaptive Intelligent Systems architecture in a variety of domains have demonstrated the generality and usefulness of the approach, even with our currently simple plan representation and mechanisms for plan following. The behavioral benefits include (1) robust improvisation of goal-directed behavior in response to dynamic situations, (2) ready exploitation of dynamically acquired knowledge or behavioral capabilities, and (3) adaptation based on dynamic aspects of coordinating diverse behaviors to achieve multiple goals. In addition to these run-time advantages, the approach has useful implications for the design and configuration of agents. Indeed, the core ideas of the approach are natural extensions of fundamental ideas in software engineering.

  14. Malaysia; Background Paper


    International Monetary Fund


    This Background Paper on Malaysia examines developments and trends in the labor market since the mid-1980s. The paper describes the changes in the employment structure and the labor force. It reviews wages and productivity trends and their effects on unit labor cost. The paper highlights that Malaysia’s rapid growth, sustained since 1987, has had a major impact on the labor market. The paper outlines the major policy measures to address the labor constraints. It also analyzes Malaysia’s recen...

  15. Angular momentum and torque described with the complex octonion

    International Nuclear Information System (INIS)

    Weng, Zi-Hua


    The paper aims to adopt the complex octonion to formulate the angular momentum, torque, and force etc in the electromagnetic and gravitational fields. Applying the octonionic representation enables one single definition of angular momentum (or torque, force) to combine some physics contents, which were considered to be independent of each other in the past. J. C. Maxwell used simultaneously two methods, the vector terminology and quaternion analysis, to depict the electromagnetic theory. It motivates the paper to introduce the quaternion space into the field theory, describing the physical feature of electromagnetic and gravitational fields. The spaces of electromagnetic field and of gravitational field can be chosen as the quaternion spaces, while the coordinate component of quaternion space is able to be the complex number. The quaternion space of electromagnetic field is independent of that of gravitational field. These two quaternion spaces may compose one octonion space. Contrarily, one octonion space can be separated into two subspaces, the quaternion space and S-quaternion space. In the quaternion space, it is able to infer the field potential, field strength, field source, angular momentum, torque, and force etc in the gravitational field. In the S-quaternion space, it is capable of deducing the field potential, field strength, field source, current continuity equation, and electric (or magnetic) dipolar moment etc in the electromagnetic field. The results reveal that the quaternion space is appropriate to describe the gravitational features, including the torque, force, and mass continuity equation etc. The S-quaternion space is proper to depict the electromagnetic features, including the dipolar moment and current continuity equation etc. In case the field strength is weak enough, the force and the continuity equation etc can be respectively reduced to that in the classical field theory

  16. Wood and Paper Manufacturing Sectors (United States)

    Find EPA regulatory information for the wood product and paper manufacturing sectors, including paper, pulp and lumber. Information includes NESHAPs and effluent guidelines for pulp and paper rulemaking, and compliance guidelines

  17. Describing pediatric dysphonia with nonlinear dynamic parameters (United States)

    Meredith, Morgan L.; Theis, Shannon M.; McMurray, J. Scott; Zhang, Yu; Jiang, Jack J.


    Objective Nonlinear dynamic analysis has emerged as a reliable and objective tool for assessing voice disorders. However, it has only been tested on adult populations. In the present study, nonlinear dynamic analysis was applied to normal and dysphonic pediatric populations with the goal of collecting normative data. Jitter analysis was also applied in order to compare nonlinear dynamic and perturbation measures. This study’s findings will be useful in creating standards for the use of nonlinear dynamic analysis as a tool to describe dysphonia in the pediatric population. Methods The study included 38 pediatric subjects (23 children with dysphonia and 15 without). Recordings of sustained vowels were obtained from each subject and underwent nonlinear dynamic analysis and percent jitter analysis. The resulting correlation dimension (D2) and percent jitter values were compared across the two groups using t-tests set at a significance level of p = 0.05. Results It was shown that D2 values covary with the presence of pathology in children. D2 values were significantly higher in dysphonic children than in normal children (p = 0.002). Standard deviations indicated a higher level of variation in normal children’s D2 values than in dysphonic children’s D2 values. Jitter analysis showed markedly higher percent jitter in dysphonic children than in normal children (p = 0.025) and large standard deviations for both groups. Conclusion This study indicates that nonlinear dynamic analysis could be a viable tool for the detection and assessment of dysphonia in children. Further investigations and more normative data are needed to create standards for using nonlinear dynamic parameters for the clinical evaluation of pediatric dysphonia. PMID:18947887

  18. Disposition of recently described species of Penicillium

    NARCIS (Netherlands)

    Frisvad, Jens C.; Samson, Robert A.; Stolk, Amelia C.


    Hundred and twenty-two species, varieties, and new combinations of Penicillium, Eupenicillium, and Talaromyces described since 1977 have been studied taxonomically and screened for mycotoxin production. Only 48 taxa could be accepted: Eupenicillium angustiporcatum, E. cryptum, E. lineolatum, E.

  19. Describing content in middle school science curricula (United States)

    Schwarz-Ballard, Jennifer A.

    As researchers and designers, we intuitively recognize differences between curricula and describe them in terms of design strategy: project-based, laboratory-based, modular, traditional, and textbook, among others. We assume that practitioners recognize the differences in how each requires that students use knowledge, however these intuitive differences have not been captured or systematically described by the existing languages for describing learning goals. In this dissertation I argue that we need new ways of capturing relationships among elements of content, and propose a theory that describes some of the important differences in how students reason in differently designed curricula and activities. Educational researchers and curriculum designers have taken a variety of approaches to laying out learning goals for science. Through an analysis of existing descriptions of learning goals I argue that to describe differences in the understanding students come away with, they need to (1) be specific about the form of knowledge, (2) incorporate both the processes through which knowledge is used and its form, and (3) capture content development across a curriculum. To show the value of inquiry curricula, learning goals need to incorporate distinctions among the variety of ways we ask students to use knowledge. Here I propose the Epistemic Structures Framework as one way to describe differences in students reasoning that are not captured by existing descriptions of learning goals. The usefulness of the Epistemic Structures framework is demonstrated in the four curriculum case study examples in Part II of this work. The curricula in the case studies represent a range of content coverage, curriculum structure, and design rationale. They serve both to illustrate the Epistemic Structures analysis process and make the case that it does in fact describe learning goals in a way that captures important differences in students reasoning in differently designed curricula

  20. Prototype Procedures to Describe Army Jobs (United States)


    including their physical locations, relationships, and characteristics. Medicine and Dentistry : Knowledge of the information and techniques needed to... veterinary treatment to animals (e.g., administers injections, takes blood pressure, changes sterile dressings). (Does not include performing basic first

  1. Torn Paper Birds. (United States)

    Harrington, Carolyn Lang


    Describes a lesson for third-grade students that begins with an examination of bird prints done by John James Audubon and moves into the students creating their own torn paper birds. Introduces the students to the beauty of birds and focuses on the environmental issues that face birds and their habitats. (CMK)

  2. ICNIRP Initiatives (invited paper)

    International Nuclear Information System (INIS)

    Bernhardt, J.H.


    The International Commission on Non-Ionizing Radiation Protection (ICNIRP) is the independent, non-governmental, scientific organisation, comprising all essential scientific disciplines, which, together with the WHO, is qualified to assess health effects of exposure to electromagnetic fields. ICNIRP uses the results of this assessment of draft health based exposure guidelines. The development of exposure guidelines requires a critical, in depth evaluation of the established scientific literature. The paper describes some criteria used for health risk assessment. Dosimetry is one of the most critical components of any scientific study assessing effects of electromagnetic fields on biological systems. Induced electric fields or current densities and specific absorption rate (SAR) are the fundamental and widely accepted dosimetric parameters. Significant recent dosimetric developments include the introduction of anatomically derived voxel-based electromagnetic models of the human body of various resolutions as well as varieties of effective numerical schemes. Due to these developments it is possible to analyse systematically the relationship between various exposure parameters and the fundamental dosimetric parameters. An appropriate metric for EMF epidemiology should be sufficiently comprehensive to allow the determination of the basic dosimetric quantities, their amplitudes and distribution in the human body. (author)

  3. Fuel ethanol discussion paper

    International Nuclear Information System (INIS)


    In recognition of the potential benefits of ethanol and the merits of encouraging value-added agricultural development, a committee was formed to develop options for the role of the Ontario Ministry of Agriculture and Food in the further development of the ethanol industry in Ontario. A consultation with interested parties produced a discussion paper which begins with an outline of the role of ethanol as an alternative fuel. Ethanol issues which require industry consideration are presented, including the function of ethanol as a gasoline oxygenate or octane enhancer, environmental impacts, energy impacts, agricultural impacts, trade and fiscal implications, and regulation. The ethanol industry and distribution systems in Ontario are then described. The current industry consists of one ethanol plant and over 30 retail stations. The key issue for expanding the industry is the economics of producing ethanol. At present, production of ethanol in the short term depends on tax incentives amounting to 23.2 cents/l. In the longer term, a significant reduction in feedstock costs and a significant improvement in processing technology, or equally significant gasoline price increases, will be needed to create a sustainable ethanol industry that does not need incentives. Possible roles for the Ministry are identified, such as support for ethanol research and development, financial support for construction of ethanol plants, and active encouragement of market demand for ethanol-blended gasolines

  4. Simplified stock markets described by number operators (United States)

    Bagarello, F.


    In this paper we continue our systematic analysis of the operatorial approach previously proposed in an economical context and we discuss a mixed toy model of a simplified stock market, i.e. a model in which the price of the shares is given as an input. We deduce the time evolution of the portfolio of the various traders of the market, as well as of other observable quantities. As in a previous paper, we solve the equations of motion by means of a fixed point like approximation.

  5. Did goethe describe attention deficit hyperactivity disorder? (United States)

    Bonazza, Sara; Scaglione, Cesa; Poppi, Massimo; Rizzo, Giovanni


    As early as 1846, the typical symptoms of attention deficit hyperactivity disorder (ADHD) were described by Heinrich Hoffmann (1809-1894). However, in Goethe's masterpiece Faust (1832), the character of Euphorion strongly suggests ADHD diagnosis. Copyright © 2011 S. Karger AG, Basel.

  6. Frameworks for understanding and describing business models

    DEFF Research Database (Denmark)

    Nielsen, Christian; Roslender, Robin


    This chapter provides in a chronological fashion an introduction to six frameworks that one can apply to describing, understanding and also potentially innovating business models. These six frameworks have been chosen carefully as they represent six very different perspectives on business models ...... Maps (2001) • Intellectual Capital Statements (2003) • Chesbrough’s framework for Open Business Models (2006) • Business Model Canvas (2008)...

  7. Modeling Approaches for Describing Microbial Population Heterogeneity

    DEFF Research Database (Denmark)

    Lencastre Fernandes, Rita

    in a computational (CFD) fluid dynamic model. The anaerobic Growth of a budding yeast population in a continuously run microbioreactor was used as example. The proposed integrated model describes the fluid flow, the local cell size and cell cycle position distributions, as well as the local concentrations of glucose...

  8. Phenomenological approach to describe logistic growth and ...

    Indian Academy of Sciences (India)


    Oct 18, 2016 ... to describe temporal evolution of systems occurring in physics, biology, statistics and economics. .... may be considered to define a new class whose growth is affected by environmental constraints like ... The growth processes may be endogenous or exoge- nous by nature. These natures do not depend on ...

  9. Analytical Solutions To Describe Juxtaposed Sands | Adeniji ...

    African Journals Online (AJOL)

    Mathematical (linear diffusion) equations are presented for two pseudoreservoir regions intersected by fault that describe the effects of partial communicating fault on pressure transient behaviour for each fault block. Green's and source function technique solve these equations. A two-well system is considered for the ...

  10. A functional language for describing reversible logic

    DEFF Research Database (Denmark)

    Thomsen, Michael Kirkedal


    . Reversibility of descriptions is guaranteed with a type system based on linear types. The language is applied to three examples of reversible computations (ALU, linear cosine transformation, and binary adder). The paper also outlines a design flow that ensures garbage- free translation to reversible logic...

  11. Paper based electronics platform

    KAUST Repository

    Nassar, Joanna Mohammad


    A flexible and non-functionalized low cost paper-based electronic system platform fabricated from common paper, such as paper based sensors, and methods of producing paper based sensors, and methods of sensing using the paper based sensors are provided. A method of producing a paper based sensor can include the steps of: a) providing a conventional paper product to serve as a substrate for the sensor or as an active material for the sensor or both, the paper product not further treated or functionalized; and b) applying a sensing element to the paper substrate, the sensing element selected from the group consisting of a conductive material, the conductive material providing contacts and interconnects, sensitive material film that exhibits sensitivity to pH levels, a compressible and/or porous material disposed between a pair of opposed conductive elements, or a combination of two of more said sensing elements. The method of sensing can further include measuring, using the sensing element, a change in resistance, a change in voltage, a change in current, a change in capacitance, or a combination of any two or more thereof.

  12. LiveDescribe: Can Amateur Describers Create High-Quality Audio Description? (United States)

    Branje, Carmen J.; Fels, Deborah I.


    Introduction: The study presented here evaluated the usability of the audio description software LiveDescribe and explored the acceptance rates of audio description created by amateur describers who used LiveDescribe to facilitate the creation of their descriptions. Methods: Twelve amateur describers with little or no previous experience with…

  13. Adiabatically describing rare earths using microscopic deformations (United States)

    Nobre, Gustavo; Dupuis, Marc; Herman, Michal; Brown, David


    Recent works showed that reactions on well-deformed nuclei in the rare-earth region are very well described by an adiabatic method. This assumes a spherical optical potential (OP) accounting for non-rotational degrees of freedom while the deformed configuration is described by couplings to states of the g.s. rotational band. This method has, apart from the global OP, only the deformation parameters as inputs, with no additional fit- ted variables. For this reason, it has only been applied to nuclei with well-measured deformations. With the new computational capabilities, microscopic large-scale calculations of deformation parameters within the HFB method based on the D1S Gogny force are available in the literature. We propose to use such microscopic deformations in our adi- abatic method, allowing us to reproduce the cross sections agreements observed in stable nuclei, and to reliably extend this description to nuclei far from stability, describing the whole rare-earth region. Since all cross sections, such as capture and charge exchange, strongly depend on the correct calculation of absorption from the incident channel (from direct reaction mechanisms), this approach significantly improves the accuracy of cross sections and transitions relevant to astrophysical studies. The work at BNL was sponsored by the Office of Nuclear Physics, Office of Science of the US Department of Energy, under Contract No. DE-AC02-98CH10886 with Brookhaven Science Associates, LLC.

  14. Describing Product Variety Using Set Theory

    DEFF Research Database (Denmark)

    Brunø, Thomas Ditlev; Nielsen, Kjeld; Jørgensen, Kaj Asbjørn


    Three capabilities: solution space development, robust process design, and choice navigation are critical for mass customizers. In order to become and stay competitive, it is proposed to establish assessment methods for these capabilities. This paper investigates the usage of set theory as a means...... for developing metrics and assessment systems. It is concluded that set theory cannot be used as an assessment method directly but is useful in the development of metrics....

  15. LTRACK: Beam-transport calculation including wakefield effects

    International Nuclear Information System (INIS)

    Chan, K.C.D.; Cooper, R.K.


    LTRACK is a first-order beam-transport code that includes wakefield effects up to quadrupole modes. This paper will introduce the readers to this computer code by describing the history, the method of calculations, and a brief summary of the input/output information. Future plans for the code will also be described

  16. Review paper on wind turbine aerodynamics

    DEFF Research Database (Denmark)

    Hansen, Martin Otto Laver; Aagaard Madsen, Helge


    The paper describes the development and description of the aerodynamic models used to estimate the aerodynamic loads on wind turbine constructions. This includes a status of the capabilities of computation fluid dynamics and the need for reliable airfoil data for the simpler engineering models....... © 2011 American Society of Mechanical Engineers....

  17. Is an eclipse described in the Odyssey? (United States)

    Baikouzis, Constantino; Magnasco, Marcelo O


    Plutarch and Heraclitus believed a certain passage in the 20th book of the Odyssey ("Theoclymenus's prophecy") to be a poetic description of a total solar eclipse. In the late 1920s, Schoch and Neugebauer computed that the solar eclipse of 16 April 1178 B.C.E. was total over the Ionian Islands and was the only suitable eclipse in more than a century to agree with classical estimates of the decade-earlier sack of Troy around 1192-1184 B.C.E. However, much skepticism remains about whether the verses refer to this, or any, eclipse. To contribute to the issue independently of the disputed eclipse reference, we analyze other astronomical references in the Epic, without assuming the existence of an eclipse, and search for dates matching the astronomical phenomena we believe they describe. We use three overt astronomical references in the epic: to Boötes and the Pleiades, Venus, and the New Moon; we supplement them with a conjectural identification of Hermes's trip to Ogygia as relating to the motion of planet Mercury. Performing an exhaustive search of all possible dates in the span 1250-1115 B.C., we looked to match these phenomena in the order and manner that the text describes. In that period, a single date closely matches our references: 16 April 1178 B.C.E. We speculate that these references, plus the disputed eclipse reference, may refer to that specific eclipse.

  18. Stimulated recall interviews for describing pragmatic epistemology (United States)

    Shubert, Christopher W.; Meredith, Dawn C.


    Students' epistemologies affect how and what they learn: do they believe physics is a list of equations, or a coherent and sensible description of the physical world? In order to study these epistemologies as part of curricular assessment, we adopt the resources framework, which posits that students have many productive epistemological resources that can be brought to bear as they learn physics. In previous studies, these epistemologies have been either inferred from behavior in learning contexts or probed through surveys or interviews outside of the learning context. We argue that stimulated recall interviews provide a contextually and interpretively valid method to access students' epistemologies that complement existing methods. We develop a stimulated recall interview methodology to assess a curricular intervention and find evidence that epistemological resources aptly describe student epistemologies.

  19. Describing chaotic attractors: Regular and perpetual points (United States)

    Dudkowski, Dawid; Prasad, Awadhesh; Kapitaniak, Tomasz


    We study the concepts of regular and perpetual points for describing the behavior of chaotic attractors in dynamical systems. The idea of these points, which have been recently introduced to theoretical investigations, is thoroughly discussed and extended into new types of models. We analyze the correlation between regular and perpetual points, as well as their relation with phase space, showing the potential usefulness of both types of points in the qualitative description of co-existing states. The ability of perpetual points in finding attractors is indicated, along with its potential cause. The location of chaotic trajectories and sets of considered points is investigated and the study on the stability of systems is shown. The statistical analysis of the observing desired states is performed. We focus on various types of dynamical systems, i.e., chaotic flows with self-excited and hidden attractors, forced mechanical models, and semiconductor superlattices, exhibiting the universality of appearance of the observed patterns and relations.

  20. Vocabularies Clashing: "The Fragmented Generation" Describes Itself (United States)

    Collins, Daniel


    After reading Scott Seider and Howard Gardner's essay "The Fragmented Generation" (2009) in a college freshman writing class, students responded by providing their own labels for their generation. This article includes excerpts from their essays. Following these excerpts is the instructor's theoretical justification for this kind of classroom…

  1. Scaling Concepts in Describing Continuous Phase Transitions

    Indian Academy of Sciences (India)

    Advanced Scientific. Research, Bengaluru. His research addresses the behaviour of liquids and disordered soft matter, including glassy dynamics and the glass transition, glasses, jamming, and phase transformations in liquids. Phase transitions, like the boiling of water upon increasing temperature, are a part of everyday ...

  2. Processes of aggression described by kinetic method (United States)

    Aristov, V. V.; Ilyin, O.


    In the last decades many investigations have been devoted to theoretical models in new areas concerning description of different biological, sociological and historical processes. In the present paper we suggest a model of the Nazi Germany invasion of Poland, France and USSR based on the kinetic theory. We model this process with the Cauchy boundary problem for the two-element kinetic equations with spatial initial conditions. The solution of the problem is given in the form of traveling wave. The propagation velocity of a frontline depends on the quotient between initial forces concentrations. Moreover it is obtained that the general solution of the model can be expressed in terms of quadratures and elementary functions. Finally it is shown that the frontline velocities are complied with the historical data.

  3. Processes of aggression described by kinetic method

    Energy Technology Data Exchange (ETDEWEB)

    Aristov, V. V.; Ilyin, O. [Dorodnicyn Computing Centre of Russian Academy of Sciences, Vavilova str. 40, Moscow, 119333 (Russian Federation)


    In the last decades many investigations have been devoted to theoretical models in new areas concerning description of different biological, sociological and historical processes. In the present paper we suggest a model of the Nazi Germany invasion of Poland, France and USSR based on the kinetic theory. We model this process with the Cauchy boundary problem for the two-element kinetic equations with spatial initial conditions. The solution of the problem is given in the form of traveling wave. The propagation velocity of a frontline depends on the quotient between initial forces concentrations. Moreover it is obtained that the general solution of the model can be expressed in terms of quadratures and elementary functions. Finally it is shown that the frontline velocities are complied with the historical data.

  4. INTRODUCTION Summary of Papers Summary of Papers (United States)

    Gauthier, Serge; Abarzhi, Snezhana I.; Sreenivasan, Katepalli R.


    describe such interaction. The analysis is applied to study time-space evolution of the perturbed quantities behind a corrugated shock front, and yields the closed-form exact analytical expressions for the turbulent kinetic energy, degree of anisotropy of velocity and vorticity fields in the compressed fluid, shock amplification of the density non-uniformity, and the sonic energy flux radiated downstream. Ktitorov obtains self-similar solution of isentropic compression of a gas in convergent geometry. The stability of shell motion is considered by means of two-dimensional numerical simulations. The perturbation amplitude growth is given for both plane and cylindrical geometries. Lebo and Lebo apply a model of energy transport in turbulent sub-critical laser plasmas of porous targets. This model is proposed for studying powerful laser pulse interaction with a low-density porous target. The interaction is strongly inhomogeneous and turbulent. Material science. Three papers consider the materials aspect of turbulent mixing. Aprelkov et al investigate the RM instability development on the free surface of a metal (lead). The disturbances are regular grooves of a triangular cross-section and a pulsed radiography method is used to visualize the interface after the passage of a strong shock. Numerical computations are in good agreement with experiments. Demianov et al make an attempt to describe RT instability in solid state by the volume-of-fluid numerical method, and their hydrodynamic simulation are based on the Bingham rheological model to include plastic effects. Desai et al report the possibility of laser generated craters to investigate planetary events such as meteorite impact craters. Experiments are performed using a laser beam on aluminum foil targets and results are well explained by two-dimensional hydrodynamic numerical simulations including radiation. Astrophysics. Astrophysical problems are considered in the following papers. Brandenburg et al study the transport

  5. Ultrathin metallized PBI paper (United States)

    Chenevey, E. C.


    A study to determine the feasibility of preparing ultrathin papers with a target weight of 3.5 g/m squared from polybenzimidazole (PBI) fibrids was undertaken. Small hand sheets of target weight were fabricated. They were light brown, low density materials with sufficient strength to be readily handleable. Characterization of these sheets included strength, fold endurance, thermal gravimetric analysis in air and nitrogen and photomicrographs. Two different batches of PBI fibrids were studied and differences in fabrication performance were noted. In neither case could target weight papers be prepared using conventional paper making techniques.

  6. The Green Paper Issue. (United States)

    Bourke, Paul; And Others


    Sixteen articles discuss the implications of Australia's Green Paper, a public policy statement recommending substantial changes in the higher education system to improve access. The issues discussed include labor force development, educational equity, women's education, and the financing of higher education. (MSE)

  7. Philosophical Papers: Submissions

    African Journals Online (AJOL)

    As all correspondence will be carried out electronically, authors are requested to include a current e-mail address with their submissions. Submission of critical notices. Philosophical Papers welcomes critical notices of recent philosophical works. Unless invited, critical notices are treated as original articles. We prefer critical ...

  8. The scentscape: An integrative framework describing scents in servicescapes


    Girard, Marc; Girard, Anna; Suppin, Anna-Caroline; Bartsch, Silke


    The systematic use of ambient scents is a trend in service companies that is accompanied by increasing research attention. However, we lack a theoretical framework that ad-dresses ambient scents' specific role in physical surroundings of services. Thus, this article develops the 'scentscape', a model that describes the process of olfactory stimulation and its impacts on customers and employees in service environments. The paper extends Bitner's servicescape model (1992) and combines it with G...

  9. Describing abortion attitudes among young, African American men. (United States)

    Woodhams, Elisabeth J; Hill, Brandon J; Fabiyi, Camille; Gilliam, Melissa


    This paper describes African American teenaged males' attitudes and perspectives on abortion. Data were derived from a larger cross-sectional survey of African American males aged 14-19, living in the south side of Chicago. Acceptability of abortion varied by partner type, such that 60% of teenagers felt abortion was acceptable with a casual partner while 37% found it acceptable with committed partners (pattitudes toward abortion. Copyright © 2016 Elsevier Inc. All rights reserved.

  10. The NBER-Rensselaer Scientific Papers Database: Form, Nature, and Function. NBER Working Paper No. 14575 (United States)

    Adams, James D.; Clemmons, J. Roger


    This article is a guide to the NBER-Rensselaer Scientific Papers Database, which includes more than 2.5 million scientific publications and over 21 million citations to those papers. The data cover an important sample of 110 top U.S. universities and 200 top U.S.-based R&D-performing firms during the period 1981-1999. This article describes the…

  11. Retooling for an aging America: building the healthcare workforce. A white paper regarding implementation of recommendation 4.2 of this Institute of Medicine Report of April 14, 2008, that "All licensure, certification and maintenance of certification for healthcare professionals should include demonstration of competence in care of older adults as a criterion.". (United States)


    In Chicago, Illinois, on May 7, 2009, a group of 53 medical educators representing many U.S. certification boards, residency review committees, and medical societies met to review and approve a white paper intended to promote Recommendation 4.2 of the Institute of Medicine report of April 14, 2008, "Retooling for an Aging America: Building the Healthcare Workforce." This recommendation is one of 14 and states: "All licensure, certification and maintenance of certification for healthcare professionals should include demonstration of competence in care of older adults as a criterion." Background information given included the growing numbers of older adults, review of a 15-year initiative by a section of the American Geriatrics Society (AGS) to include geriatric education in all surgical and some related medical specialties, a recent announcement of 26 elder care competencies to be expected of graduating medical students from association of American Medical Colleges (AAMC) affiliated schools, and the American Board of Medical Specialties (ABMS) approach to 'Reinforcing Geriatric Competencies through Licensure and Certification Examinations." Nine points involved in the implementation of this recommendation received discussion, and approaches to realization were presented. In conclusion, this white paper, which those listed as being in attendance approved, proposes hat all ABMS member boards whose diplomates participate in the care of older adults select the floor competencies enumerated by the AAMC that apply to their specialty and add or subtract those completed during their trainees' initial (intern) year and then define those needed in subsequent years of residency and ultimate practice. This would fulfill the requirements of Recommendation 4.2 above.

  12. Nanotechnology in paper electronics (United States)

    Demming, Anna; Österbacka, Professor Ronald; Han, Jin-Woo, Dr


    The ability to put cutting edge technology on paper—not in words but in a working physical form—has been attracting an increasing number of researchers over the past decade. Paper has many advantages that make it attractive for flexible electronics: it is relatively environmentally benign; it is renewable; it can be recycled; it is light weight; production processes for paper are well advanced; and it is inexpensive. This special issue, with guest editors Ronald Österbacka from Åbo Akademi University in Finland and Jin-Woo Han from the NASA AMES Research Center, features some of the latest in paper electronics research, including developments towards applications in displays, sensing and alternative energy sources, as well as fundamental studies to further our understanding of how paper can be most effectively used in electronics. As Andrew Steckl and colleagues in the US point out, 'Cellulose-based paper substrates were implemented as an electronic substrate as early as 1969, with most advancement occurring in the past decade largely due to technology improvements in thin film deposition and organic materials' [1, 2]. They report a detailed comparison between paper, standard liquid crystal display rigid glass and flexible glass for hosting pentacene organic thin film transistors, and obtain promising results for future paper-based devices. As most meaningful electronic devices rely on transistors to function, transistors feature quite prominently in this special issue. Rodrigo Martins and colleagues in France and Portugal study the effect of fibre type, structure and dimension on paper-based transistors and reveal further insights into how paper properties affect device performance [3]. Qing Wan and colleagues in China bring the state of the art in transistor technology to paper substrates [4], fabricating indium-zinc-oxide (IZO)-based protonic/electronic hybrid thin film transistors on paper and showing that they can be used as artificial synapses. Like the

  13. The Meanings of Learning as Described by Polish Migrant Bloggers (United States)

    Popow, Monika


    This paper addresses the meanings given to learning by Polish migrant bloggers. It presents the result of an analysis of ten blogs, written by Poles living abroad. The blogs under analysis were chosen on the basis of random sample. The analysed material was categorised by recurring themes, which included: learning in Poland, language acquisition,…

  14. Do we see what we should see? Describing non-covalent interactions in protein structures including precision

    Directory of Open Access Journals (Sweden)

    Manickam Gurusaran


    Full Text Available The power of X-ray crystal structure analysis as a technique is to `see where the atoms are'. The results are extensively used by a wide variety of research communities. However, this `seeing where the atoms are' can give a false sense of security unless the precision of the placement of the atoms has been taken into account. Indeed, the presentation of bond distances and angles to a false precision (i.e. to too many decimal places is commonplace. This article has three themes. Firstly, a basis for a proper representation of protein crystal structure results is detailed and demonstrated with respect to analyses of Protein Data Bank entries. The basis for establishing the precision of placement of each atom in a protein crystal structure is non-trivial. Secondly, a knowledge base harnessing such a descriptor of precision is presented. It is applied here to the case of salt bridges, i.e. ion pairs, in protein structures; this is the most fundamental place to start with such structure-precision representations since salt bridges are one of the tenets of protein structure stability. Ion pairs also play a central role in protein oligomerization, molecular recognition of ligands and substrates, allosteric regulation, domain motion and α-helix capping. A new knowledge base, SBPS (Salt Bridges in Protein Structures, takes these structural precisions into account and is the first of its kind. The third theme of the article is to indicate natural extensions of the need for such a description of precision, such as those involving metalloproteins and the determination of the protonation states of ionizable amino acids. Overall, it is also noted that this work and these examples are also relevant to protein three-dimensional structure molecular graphics software.

  15. All-printed paper-based memory

    KAUST Repository

    He, Jr-Hau


    All-printed paper-based substrate memory devices are described which can be prepared by a process that includes coating, using a screen printer, one or more areas of a paper substrate (102) with a conductor material (104), such as a carbon paste, to form a first electrode, depositing, with an ink jet printer, a layer of resistance switching insulator material (106), such as titanium dioxide, over one or more areas of the conductor material, and depositing, with an ink jet printer, a layer of metal (108), such as silver, over one or more areas of the titanium dioxide to form a second electrode.

  16. Orthogonal polynomials describing polarization aberration for rotationally symmetric optical systems. (United States)

    Xu, Xiangru; Huang, Wei; Xu, Mingfei


    Optical lithography has approached a regime of high numerical aperture and wide field, where the impact of polarization aberration on imaging quality turns to be serious. Most of the existing studies focused on the distribution rule of polarization aberration on the pupil, and little attention had been paid to the field. In this paper, a new orthonormal set of polynomials is established to describe the polarization aberration of rotationally symmetric optical systems. The polynomials can simultaneously reveal the distribution rules of polarization aberration on the exit pupil and the field. Two examples are given to verify the polynomials.

  17. Pulp and paper industry

    Energy Technology Data Exchange (ETDEWEB)

    Viinikainen, S.; Nousiainen, I.; Edelman, K.; Manninen, J.


    in the region of 400 million euros, the development of energy efficient and environmentally friendly technologies should not increase the investment cost. Whereas the overall energy efficiency has improved in the past, the electricity intensity has increased. Turning the latter trend around poses a clear challenge for the future. The main approaches include developments in mechanical pulping, higher consistency processing along the pulp and paper production line, accurately dimensioned and controlled pumping as well as advanced process control and energy management systems. Reduction of fresh water intake and new sidestream processing techniques will improve environmental efficiency. Two scenarios are presented. In the Base scenario, the price and availability of electricity favour only a modest capacity increase, resulting in paper and board production of 15 Mt/a and electricity use of 28 TWh/a in 2030. In the Mechanical scenario, high-quality wood-containing papers dominate. The available amounts of wood species dictate the production of different paper grades. The reduction in specific electricity consumption equates to 4% from current figures. With paper and board production of 17 Mt/a, this will result in electricity consumption of 30 TWh/a. If a major breakthrough takes place in TMP production which reduces the specific electricity consumption by 30%, electricity consumption will almost remain at the present level.

  18. Pump apparatus including deconsolidator

    Energy Technology Data Exchange (ETDEWEB)

    Sonwane, Chandrashekhar; Saunders, Timothy; Fitzsimmons, Mark Andrew


    A pump apparatus includes a particulate pump that defines a passage that extends from an inlet to an outlet. A duct is in flow communication with the outlet. The duct includes a deconsolidator configured to fragment particle agglomerates received from the passage.

  19. ILC Higgs White Paper

    CERN Document Server

    Asner, D.M.; Calancha, C.; Fujii, K.; Graf, N.; Haber, H.E.; Ishikawa, A.; Kanemura, S.; Kawada, S.; Kurata, M.; Miyamoto, A.; Neal, H.; Ono, H.; Potter, C.; Strube, J.; Suehara, T.; Tanabe, T.; Tian, J.; Tsumura, J.; Watanuki, S.; Weiglein, G.; Yagyu, K.; Yokoya, H.


    The ILC Higgs White Paper is a review of Higgs Boson theory and experiment at the International Linear Collider (ILC). Theory topics include the Standard Model Higgs, the two-Higgs doublet model, alternative approaches to electroweak symmetry breaking, and precision goals for Higgs boson experiments. Experimental topics include the measurement of the Higgs cross section times branching ratio for various Higgs decay modes at ILC center of mass energies of 250, 500, and 1000 GeV, and the extraction of Higgs couplings and the total Higgs width from these measurements. Luminosity scenarios based on the ILC TDR machine design are used throughout. The gamma-gamma collider option at the ILC is also discussed.

  20. Optical modulator including grapene (United States)

    Liu, Ming; Yin, Xiaobo; Zhang, Xiang


    The present invention provides for a one or more layer graphene optical modulator. In a first exemplary embodiment the optical modulator includes an optical waveguide, a nanoscale oxide spacer adjacent to a working region of the waveguide, and a monolayer graphene sheet adjacent to the spacer. In a second exemplary embodiment, the optical modulator includes at least one pair of active media, where the pair includes an oxide spacer, a first monolayer graphene sheet adjacent to a first side of the spacer, and a second monolayer graphene sheet adjacent to a second side of the spacer, and at least one optical waveguide adjacent to the pair.

  1. Human Errors - A Taxonomy for Describing Human Malfunction in Industrial Installations

    DEFF Research Database (Denmark)

    Rasmussen, Jens


    This paper describes the definition and the characteristics of human errors. Different types of human behavior are classified, and their relation to different error mechanisms are analyzed. The effect of conditioning factors related to affective, motivating aspects of the work situation as well...... as physiological factors are also taken into consideration. The taxonomy for event analysis, including human malfunction, is presented. Possibilities for the prediction of human error are discussed. The need for careful studies in actual work situations is expressed. Such studies could provide a better...... understanding of the complexity of human error situations as well as the data needed to characterize these situations....

  2. Dynamic modelling of pectin extraction describing yield and functional characteristics

    DEFF Research Database (Denmark)

    Andersen, Nina Marianne; Cognet, T.; Santacoloma, P. A.


    A dynamic model of pectin extraction is proposed that describes pectin yield, degree of esterification and intrinsic viscosity. The dynamic model is one dimensional in the peel geometry and includes mass transport of pectin by diffusion and reaction kinetics of hydrolysis, degradation and de......-esterification. The model takes into account the effects of the process conditions such as temperature and acid concentration on extraction kinetics. It is shown that the model describes pectin bulk solution concentration, degree of esterification and intrinsic viscosity in pilot scale extractions from lime peel...... at different temperatures (60 °C, 70 °C, 80 °C) and pH (1.5, 2.3, 3.1) values....

  3. Data quality white paper. (United States)


    This paper looks at the issue of data quality within the context of transportation operations and management. The : objective of this paper is to investigate data quality measures and how they are applied in existing systems. This paper : explores th...

  4. Anatomy of a research paper. (United States)

    Branson, Richard D


    Writing, editing, and publishing the paper is the last step in the research process. The paper tells the story of the project from inception, through the data-collection process, statistical analysis, and discussion of the results. Novice authors often struggle with writing and often find themselves with either nothing on paper or a weighty version of random thoughts. The process of writing the paper should be analogous to the research process. This article describes and provides a template for the essential sections and features of a scientific report (structured abstract, introduction, hypothesis, methods, results, discussion, and conclusions), describes authorship guidelines that have been established by professional societies, and discusses the importance of adequate and correct references.

  5. CPT: an open system that describes all that you do. (United States)

    Thorwarth, William T


    The American Medical Association, with the cooperation of multiple major medical specialty societies, including the ACR, responded in 1966 to the need for a complete coding system for describing medical procedures and services with the first publication of Current Procedural Terminology (CPT). This system, now CPT IV, forms the basis of reporting of virtually all inpatient and outpatient services performed by physicians and nonphysician health care providers as well as facilities. This coding system and its maintenance process have evolved in complexity and sophistication, particularly in the past decade, such that it is now integral to all facets of health care, including tracking new and investigational procedures and reporting and monitoring performance measures (read "pay for performance"), in addition to its long-standing use for reporting for reimbursement. To paraphrase a recent automobile commercial, "This is not your father's CPT." The author describes the development of CPT as it exists today, examining the forces that molded its current form, the input opportunities available to medical specialty societies and others, the ever increasing transparency of the CPT maintenance process, and the availability of resources allowing all to stay current. Understanding this system, critical to the practice of all of medicine, including radiology, will aid all health care providers in maintaining the quality, efficiency, and accuracy of their practices' business operations as well as assist them in a world of increasingly complex reporting requirements.

  6. Describing linguistic information in a behavioural framework: Possible or not?

    Energy Technology Data Exchange (ETDEWEB)

    De Cooman, G. [Universiteit Gent, Zwijnaarde (Belgium)


    The paper discusses important aspects of the representation of linguistic information, using imprecise probabilities with a behavioural interpretation. We define linguistic information as the information conveyed by statements in natural language, but restrict ourselves to simple affirmative statements of the type {open_quote}subject-is-predicate{close_quote}. Taking the behavioural stance, as it is described in detail, we investigate whether it is possible to give a mathematical model for this kind of information. In particular, we evaluate Zadeli`s suggestion that we should use possibility measures to this end. We come to tile conclusion that, generally speaking, possibility measures are possibility models for linguistic information, but that more work should be done in order to evaluate the suggestion that they may be the only ones.

  7. North American pulp & paper model (NAPAP) (United States)

    Peter J. Ince; Joseph Buongiorno


    This chapter describes the development and structure of the NAPAP model and compares it to other forest sector models. The NAPAP model was based on PELPS and adapted to describe paper and paperboard product demand, pulpwood and recovered paper supply, and production capacity and technology, with spatially dynamic market equilibria. We describe how the model predicts...

  8. A Model Describing Stable Coherent Synchrotron Radiation in Storage Rings

    International Nuclear Information System (INIS)

    Sannibale, F.


    We present a model describing high power stable broadband coherent synchrotron radiation (CSR) in the terahertz frequency region in an electron storage ring. The model includes distortion of bunch shape from the synchrotron radiation (SR), which enhances higher frequency coherent emission, and limits to stable emission due to an instability excited by the SR wakefield. It gives a quantitative explanation of several features of the recent observations of CSR at the BESSY II storage ring. We also use this model to optimize the performance of a source for stable CSR emission

  9. A model describing stable coherent synchrotron radiation in storage rings

    International Nuclear Information System (INIS)

    Sannibale, F.; Byrd, J.M.; Loftsdottir, A.; Venturini, M.; Abo-Bakr, M.; Feikes, J.; Holldack, K.; Kuske, P.; Wuestefeld, G.; Huebers, H.-W.; Warnock, R.


    We present a model describing high power stable broadband coherent synchrotron radiation (CSR) in the terahertz frequency region in an electron storage ring. The model includes distortion of bunch shape from the synchrotron radiation (SR), which enhances higher frequency coherent emission, and limits to stable emission due to an instability excited by the SR wakefield. It gives a quantitative explanation of several features of the recent observations of CSR at the BESSY II storage ring. We also use this model to optimize the performance of a source for stable CSR emission

  10. A model to describe the performance of the UASB reactor. (United States)

    Rodríguez-Gómez, Raúl; Renman, Gunno; Moreno, Luis; Liu, Longcheng


    A dynamic model to describe the performance of the Upflow Anaerobic Sludge Blanket (UASB) reactor was developed. It includes dispersion, advection, and reaction terms, as well as the resistances through which the substrate passes before its biotransformation. The UASB reactor is viewed as several continuous stirred tank reactors connected in series. The good agreement between experimental and simulated results shows that the model is able to predict the performance of the UASB reactor (i.e. substrate concentration, biomass concentration, granule size, and height of the sludge bed).

  11. Theory of control systems described by differential inclusions

    CERN Document Server

    Han, Zhengzhi; Huang, Jun


    This book provides a brief introduction to the theory of finite dimensional differential inclusions, and deals in depth with control of three kinds of differential inclusion systems. The authors introduce the algebraic decomposition of convex processes, the stabilization of polytopic systems, and observations of Luré systems. They also introduce the elemental theory of finite dimensional differential inclusions, and the properties and designs of the control systems described by differential inclusions. Addressing the material with clarity and simplicity, the book includes recent research achievements and spans all concepts, concluding with a critical mathematical framework. This book is intended for researchers, teachers and postgraduate students in the area of automatic control engineering.

  12. List of working papers

    International Nuclear Information System (INIS)


    The following working papers are included in this report. The other papers, or the memos of which they consist, are available from the IAEA Nuclear Data Section. WP2001-2 Inventory of TRANS files exchanged since the last meeting; WP2001-4 Data headings and units for wavelength and kT; WP2001-6 Proposed Polarization Quantities; WP2001-7 Correlation / Angular correlation: Clarifications and dictionary cleanup; WP2001-8 Proposed quantity PAR/M-,DA,G; WP2001-14 Units N/PART/SR etc. for Dict. 25; WP2001-15 Coding of differential neutron multiplicity distributions; WP2001-16 Headings E-LVL-INI, E-LVL-FIN as 'additional information'; WP2001-17 Dictionary sorting flags and wildcards; WP2001-18 IAEA/NDS priorities in the EXFOR compilation; WP2001-21 CSISRS Library Statistics (NNDC); WP2001-23 CINDA-2001 Manual (24 May 2001); WP2001-24 Correspondence of quantity codes for CINDA-2001; WP2001-25 EXFOR as a multi-platform relational database: current status of development; WP2001-26 Compilation and Evaluation of Alpha-Induced Nuclear Reaction Cross Sections for Astrophysics; WP2001-28 Journal coverage for CINDA


    Directory of Open Access Journals (Sweden)

    Bogomolova A. S.


    Full Text Available This paper presents the review of issues and approaches to the analysis of escape dynamics in economic models with constant gain adaptive learning which is used to model and describe the behavior of various (macroeconomic as well as microeconomic variables in diverse economic phenomena such as currency crises, inflation episodes, endogenous collusion in oligopoly, and cycles of economic activity. This review considers and contrasts two currently existing approaches to the analysis of escape dynamics: the discrete-time approach employed, for example, by Cho, Williams and Sargent (2002, and the continuous-time approach proposed by Kasa (2004 and extended recently by Kolyuzhnov, Bogomolova and Slobodyan (2014, stressing the advantages of the latter. The continuous-time approach is based on the application of the results of the continuous-time version of the large deviations theory to the diffusion approximation of the original discrete-time dynamics under learning. Escape dynamics is characterized by analytically deriving the most probable escape point and mean escape time. The paper provides an example of the continuous-time approach applied to the Phelps problem of a government controlling inflation while adaptively learning the approximate Phillips curve.

  14. Nonlinear analysis of a rotor-bearing system using describing functions (United States)

    Maraini, Daniel; Nataraj, C.


    This paper presents a technique for modelling the nonlinear behavior of a rotor-bearing system with Hertzian contact, clearance, and rotating unbalance. The rotor-bearing system is separated into linear and nonlinear components, and the nonlinear bearing force is replaced with an equivalent describing function gain. The describing function captures the relationship between the amplitude of the fundamental input to the nonlinearity and the fundamental output. The frequency response is constructed for various values of the clearance parameter, and the results show the presence of a jump resonance in bearings with both clearance and preload. Nonlinear hardening type behavior is observed in the case with clearance and softening behavior is observed for the case with preload. Numerical integration is also carried out on the nonlinear equations of motion showing strong agreement with the approximate solution. This work could easily be extended to include additional nonlinearities that arise from defects, providing a powerful diagnostic tool.

  15. Bacteria colonizing paper machines


    Ekman, Jaakko


    Bacteria growing in paper machines can cause several problems. Biofilms detaching from paper machine surfaces may lead to holes and spots in the end product or even break the paper web leading to expensive delays in production. Heat stable endospores will remain viable through the drying section of paper machine, increasing the microbial contamination of paper and board. Of the bacterial species regularly found in the end products, Bacillus cereus is the only one classified as a pathogen. Cer...

  16. Paper on Designing Costless THz Paper Optics

    Directory of Open Access Journals (Sweden)

    A. Siemion


    Full Text Available Designing diffractive optical elements is crucial for efficient development of THz techniques. Here, we consider paper structures and we analyze their advantages and disadvantages in fast prototyping. The discussion about using material parameters like refractive index and absorption coefficient in designing diffractive optical elements is shown. We analyze the influence of phase step mismatch, of attenuation of real structure, and of nonuniform illumination on the efficiency of the structure. All these features result in worsening of the diffraction efficiency but they do not seem to have such significant influence as shadow effect introduced by fast varying zones. Diffractive elements can be designed with very good accordance with experimental results which makes them ideal for possible applications. Paper optics scan be used more for fast prototyping; nevertheless its performance can be increased by placing it inside water protecting foil.

  17. Analytical simulation platform describing projections in computed tomography systems

    International Nuclear Information System (INIS)

    Youn, Hanbean; Kim, Ho Kyung


    To reduce the patient dose, several approaches such as spectral imaging using photon counting detectors and statistical image reconstruction, are being considered. Although image-reconstruction algorithms may significantly enhance image quality in reconstructed images with low dose, true signal-to-noise properties are mainly determined by image quality in projections. We are developing an analytical simulation platform describing projections to investigate how quantum-interaction physics in each component configuring CT systems affect image quality in projections. This simulator will be very useful for an improved design or optimization of CT systems in economy as well as the development of novel image-reconstruction algorithms. In this study, we present the progress of development of the simulation platform with an emphasis on the theoretical framework describing the generation of projection data. We have prepared the analytical simulation platform describing projections in computed tomography systems. The remained further study before the meeting includes the following: Each stage in the cascaded signal-transfer model for obtaining projections will be validated by the Monte Carlo simulations. We will build up energy-dependent scatter and pixel-crosstalk kernels, and show their effects on image quality in projections and reconstructed images. We will investigate the effects of projections obtained from various imaging conditions and system (or detector) operation parameters on reconstructed images. It is challenging to include the interaction physics due to photon-counting detectors into the simulation platform. Detailed descriptions of the simulator will be presented with discussions on its performance and limitation as well as Monte Carlo validations. Computational cost will also be addressed in detail. The proposed method in this study is simple and can be used conveniently in lab environment

  18. Corrosion/96 conference papers

    International Nuclear Information System (INIS)



    Topics covered by this conference include: cathodic protection in natural waters; cleaning and repassivation of building HVAC systems; worldwide opportunities in flue gas desulfurization; advancements in materials technology for use in oil and gas service; fossil fuel combustion and conversion; technology of corrosion inhibitors; computers in corrosion control--modeling and information processing; recent experiences and advances of austenitic alloys; managing corrosion with plastics; corrosion measurement technology; corrosion inhibitors for concrete; refining industry; advances in corrosion control for rail and tank trailer equipment; CO 2 corrosion--mechanisms and control; microbiologically influenced corrosion; corrosion in nuclear systems; role of corrosion in boiler failures; effects of water reuse on monitoring and control technology in cooling water applications; methods and mechanisms of scale and deposit control; corrosion detection in petroleum production lines; underground corrosion control; environmental cracking--relating laboratory results and field behavior; corrosion control in reinforced concrete structures; corrosion and its control in aerospace and military hardware; injection and process addition facilities; progress reports on the results of reinspection of deaerators inspected or repaired per RP0590 criteria; near 100% volume solids coating technology and application methods; materials performance in high temperature environments containing halides; impact of toxicity studies on use of corrosion/scale inhibitors; mineral scale deposit control in oilfield related operations; corrosion in gas treating; marine corrosion; cold climate corrosion; corrosion in the pulp and paper industry; gaseous chlorine alternatives in cooling water systems; practical applications of ozone in recirculating cooling water systems; and water reuse in industry. Over 400 papers from this conference have been processed separately for inclusion on the data base

  19. CEM 2009. Conference papers

    Energy Technology Data Exchange (ETDEWEB)



    Papers are presented under the following session headings: emission factors and inventories; certifications and accreditation; PM10/2.5; advanced techniques; and QA/QC. Some of the papers are only the overheads/viewgraphs of the presentation.

  20. Metal traces in paper and paper products

    Energy Technology Data Exchange (ETDEWEB)

    Knezevic, G.


    In the following a survey is given on the problems of detection and occurrence of heavy metals in packaging materials. A method of sample preparation procedure and AAS measurement is presented which allows the direct detection of metals such as cadmium, lead, arsenic and mercury. The method was tested with standard reference materials and checked in Round Robin tests. More than 150 paper samples which are used in food packaging were analysed with regard to their heavy metal content. In case of heavy metal traces, the values were compared with literature data. In order to evaluate the influence of heavy metals in packaging materials it is necessary to determine the soluble part of the total amount of these metals in the packaging material, which also can be done by means of our method. A comparison of metal contents of selected foodstuffs with paper samples analysed by us showed that the consumer will not suffer an additional burdening by migration of heavy metals from packaging materials into foodstuffs.

  1. Magnet options for sensors for the pulp and paper industry (United States)

    Green, M. A.; Barale, P. J.; Fong, C. G.; Luft, P. A.; Reimer, J. A.; Yahnke, M. S.


    The Lawrence Berkeley National Laboratory (LBNL) has been developing sensors for the pulp and paper industry that use a magnetic field. The applications for magnetic sensors that have been studied include 1) sensors for the measurement of the water and ice content of wood chips entering the pulping mill, 2) sensors for measuring the water content and other constituents of the black liquor leaving the paper digester, and 3) sensors for measuring paper thickness and water content as the paper is being processed. These tasks can be done using nuclear magnetic resonance (NMR). The magnetic field used for doing the NMR can come from either permanent magnets or superconducting magnets. The choice of the magnet is dependent on a number of factors, which include the size of the sample and field strength needed to do the sensing task at hand. This paper describes some superconducting magnet options that can be used in the pulp and paper industry.

  2. Prediction of highly cited papers (United States)

    Newman, M. E. J.


    In an article in the pages of this journal five years ago, we described a method for predicting which scientific papers will be highly cited in the future, even if they are currently not highly cited. Applying the method to real citation data we made predictions about papers we believed would end up being well cited. Here we revisit those predictions, five years on, to see how well we did. Among the over 2000 papers in our original data set, we examine the fifty that, by the measures of our previous study, were predicted to do best and we find that they have indeed received substantially more citations in the intervening years than other papers, even after controlling for the number of prior citations. On average these top fifty papers have received 23 times as many citations in the last five years as the average paper in the data set as a whole, and 15 times as many as the average paper in a randomly drawn control group that started out with the same number of citations. Applying our prediction technique to current data, we also make new predictions of papers that we believe will be well cited in the next few years.

  3. Outstanding student paper awards (United States)

    The Hydrology Section presented five outstanding student paper awards at the 1999 Spring Meeting in Boston, Massachusetts, last June.Maneesha Joshi presented a poster titled “Estimation of the Extent and Duration of Melt on the Greenland Ice Sheet using an Edge Detection Technique on Passive Microwave Data.” She received her B.Tech. in civil engineering from the Indian Institute of Technology, Bombay in 1991, and a M.S. in environmental engineering from State University of New York, Buffalo in 1994. Maneesha expects to complete her Ph.D. in civil engineering (remote sensing) in September 1999, under the supervision of Carolyn Merry (Department of Civil and Environmental Engineering & Geodetic Science), Ken Jezek, and John Bolzan (Byrd Polar Research Center) at the Ohio State University, Columbus, Ohio. Her thesis focuses on estimating the extent of melt, melt season, and duration, and absorbed radiation on the Greenland ice sheet from passive microwave and SAR data. Maneesha's other interests include image processing, issues related to global climate change, and photogrammetry.

  4. The physics of paper (United States)

    Alava, Mikko; Niskanen, Kaarlo


    Paper is a material known to everybody. It has a network structure consisting of wood fibres that can be mimicked by cooking a portion of spaghetti and pouring it on a plate, to form a planar assembly of fibres that lie roughly horizontal. Real paper also contains other constituents added for technical purposes. This review has two main lines of thought. First, in the introductory part, we consider the physics that one encounters when 'using' paper, an everyday material that exhibits the presence of disorder. Questions arise, for instance, as to why some papers are opaque and others translucent, some are sturdy and others sloppy, some readily absorb drops of liquid while others resist the penetration of water. The mechanical and rheological properties of paper and paperboard are also interesting. They are inherently dependent on moisture content. In humid conditions paper is ductile and soft, in dry conditions brittle and hard. In the second part we explain in more detail research problems concerned with paper. We start with paper structure. Paper is made by dewatering a suspension of fibres starting from very low content of solids. The processes of aggregation, sedimentation and clustering are familiar from statistical mechanics. Statistical growth models or packing models can simulate paper formation well and teach a lot about its structure. The second research area that we consider is the elastic and viscoelastic properties and fracture of paper and paperboard. This has traditionally been the strongest area of paper physics. There are many similarities to, but also important differences from, composite materials. Paper has proved to be convenient test material for new theories in statistical fracture mechanics. Polymer physics and memory effects are encountered when studying creep and stress relaxation in paper. Water is a 'softener' of paper. In humid conditions, the creep rate of paper is much higher than in dry conditions. The third among our topics is the

  5. Industrial radiography on radiographic paper

    International Nuclear Information System (INIS)

    Domanus, J.C.


    An investigation was performed to compare the quality of radiographic paper with that of X-ray film, after a review had been made of the rather scarce literature on the subject. The equipment used throughout the investigation is described, and characteristic curves for Agfa-Gevaert and Kodak papers exposed with different intensifying screens in the low and intermediate voltage range are reproduced. The relative speed, contrast and exposure latitude were computed from these curves. The quality of the radiographic image was checked on U/Al blocks and plates, Al and Fe blocks, and fiber-reinforced composites. Exposure charts for Al and Fe were made for various paper and screen combinations. Both the sharpness of the radiographic image as well as the influence of processing on speed and contrast were checked. Examples are given of the practical application of the paper for radiography of castings, weldings, solderings, assemblies, etc. (author)

  6. Describing and optimizing reversible logic using a functional language

    DEFF Research Database (Denmark)

    Thomsen, Michael Kirkedal


    This paper presents the design of a language for the description and optimisation of reversible logic circuits. The language is a combinator-style functional language designed to be close to the reversible logical gate-level. The combinators include high-level constructs such as ripples, but also...... the recognisable inversion combinator f^(-1), which defines the inverse function of f using an efficient semantics. It is important to ensure that all circuits descriptions are reversible, and furthermore we must require this to be done statically. This is en- sured by the type system, which also allows...... the description of arbitrary sized circuits. The combination of the functional language and the restricted reversible model results in many arithmetic laws, which provide more possibilities for term rewriting and, thus, the opportunity for good optimisation....

  7. Describing visual scenes: towards a neurolinguistics based on construction grammar. (United States)

    Arbib, Michael A; Lee, Jinyong


    The present paper is part of a larger effort to locate the production and perception of language within the broader context of brain mechanisms for action and perception more generally. Here we model function in terms of the competition and cooperation of schemas. We use the task of describing visual scenes to explore the suitability of Construction Grammar as an appropriate framework for a schema-based linguistics. We recall the early VISIONS model of schema-based computer analysis of static visual scenes and then introduce SemRep as a graphical representation of dynamic visual scenes designed to support the generation of varied descriptions of episodes. We report preliminary results on implementing the production of sentences using Template Construction Grammar (TCG), a new form of construction grammar distinguished by its use of SemRep to express semantics. We summarize data on neural correlates relevant to future work on TCG within the context of neurolinguistics, and show how the relation between SemRep and TCG can serve as the basis for modeling language comprehension.

  8. Male powerlifting performance described from the viewpoint of complex systems. (United States)

    García-Manso, J M; Martín-González, J M; Da Silva-Grigoletto, M E; Vaamonde, D; Benito, P; Calderón, J


    This paper reflects on the factors that condition performance in powerlifting and proposes that the result-generating process is inadequately described by the allometric equations commonly used. We analysed the scores of 1812 lifters belonging to all body mass categories, and analysed the changes in the results achieved in each weight category and by each competitor. Current performance-predicting methods take into account biological variables, paying no heed to other competition features. Performance in male powerlifting (as in other strength sports) behaves as a self-organised system with non-linear interactions between its components. Thus, multiple internal and external elements must condition changes in a competitor's score, the most important being body mass, body size, the number of practitioners, and the concurrency of favourable factors in one individual. It was observed that each behaved in a specific form in the high level, according to the individuals' circumstances, which make up the main elements of the competitive system in every category. In powerlifting, official weight categories are generally organised in three different groups: light (125 kg) lifter categories, each one of them with specific allometric exponents. The exponent should be revised periodically, especially with regard to the internal dynamics of the category, and adjusted according to possible changes affecting competition.

  9. HERMES: A Model to Describe Deformation, Burning, Explosion, and Detonation

    Energy Technology Data Exchange (ETDEWEB)

    Reaugh, J E


    performance, whether as a result of accident, hazard, or a fault in the detonation train. These models describe the build-up of detonation from a shock stimulus. They are generally consistent with the mesoscale picture of ignition at many small defects in the plane of the shock front and the growth of the resulting hot-spots, leading to detonation in heterogeneous explosives such as plastic-bonded explosives (PBX). The models included terms for ignition, and also for the growth of reaction as tracked by the local mass fraction of product gas, {lambda}. The growth of reaction in such models incorporates a form factor that describes the change of surface area per unit volume (specific surface area) as the reaction progresses. For unimolecular crystalline-based explosives, the form factor is consistent with the mesoscale picture of a galaxy of hot spots burning outward and eventually interacting with each other. For composite explosives and propellants, where the fuel and oxidizer are segregated, the diffusion flame at the fuel-oxidizer interface can be interpreted with a different form factor that corresponds to grains burning inward from their surfaces. The form factor influences the energy release rate, and the amount of energy released in the reaction zone. Since the 19th century, gun and cannon propellants have used perforated geometric shapes that produce an increasing surface area as the propellant burns. This helps maintain the pressure as burning continues while the projectile travels down the barrel, which thereby increases the volume of the hot gas. Interior ballistics calculations use a geometric form factor to describe the changing surface area precisely. As a result, with a suitably modified form factor, detonation models can represent burning and explosion in damaged and broken reactant. The disadvantage of such models in application to accidents is that the ignition term does not distinguish between a value of pressure that results from a shock, and the same

  10. Science projection paper overview report

    International Nuclear Information System (INIS)

    Lasser, E.


    This paper is comprised of a large number of position papers that describe current research and potential areas for future research in the field of diagnostic procedures. There are few specific recommendations that can be made for research to identify biological effects below one rod in populations exposed to diagnostic radiological imaging. It is the conclusion of the author that if radiology is practiced according to the state-of-the-art, then it has been responsive to the implications of biological effects whether the effects adhere to the linear hypothesis or vary from it

  11. Deficiency neuropathy in wartime: the "paraesthetic-causalgic syndrome" described by Manuel Peraita during the Spanish Civil War. (United States)

    Huertas, Rafael; Del Cura, Maria Isabel


    This paper discusses the contribution of Spanish neurologist Manuel Peraita (1908-1950) to the study of deficiency neuropathy in the setting of the Spanish Civil War (1936-1939). The clinical characteristics of "paraesthetic-causalgic syndrome" or "Madrid syndrome" as described by Peraita are discussed, and the syndrome is presented in relation to other similar conditions, including Strachan's syndrome and burning feet syndrome.

  12. Sex education in Swedish schools as described by young women. (United States)

    Ekstrand, Maria; Engblom, Camilla; Larsson, Margareta; Tydén, Tanja


    To investigate sex education in Swedish schools regarding content, satisfaction, and suggested improvements, as described by teenagers and young adults. Waiting-room survey conducted among 225 female patients (aged 13-25) at youth and student health clinics in one large-, and one medium-sized Swedish city. Most participants (97%, n = 218) had received sex education in school, of varying content and quality. Sixty percent thought basic body development was sufficiently covered. Insufficiently covered topics included sexual assault (96%), sexual harassment (94%), pornography (90%), abortion (81%), emergency contraception (80%), fertility (80%), and pregnancy (59%). Thirty percent received no information about chlamydia, and almost half reported that condyloma and human papillomavirus had not been addressed. The youngest respondents (13-19 years) were significantly more likely to have been told about emergency contraception, homosexuality, bisexuality, and transsexuality. Nearly half (46%) considered 'acceptable' the knowledge gained from sex education provided at school whereas more than a third considered it 'poor' or 'very poor'. Suggested improvements included more information, more discussion, greater emphasis on sexual diversity, and more knowledgeable teachers. Content and quality of sex education varied greatly. Most respondents thought many topics were insufficiently covered, sex education should be more extensive, and teachers better educated.

  13. Academic Primer Series: Eight Key Papers about Education Theory

    Directory of Open Access Journals (Sweden)

    Michael Gottlieb


    Full Text Available Many teachers adopt instructional methods based on assumptions of best practices without attention to or knowledge of supporting education theory. Familiarity with a variety of theories informs education that is efficient, strategic, and evidence-based. As part of the Academic Life in Emergency Medicine Faculty Incubator Program, a list of key education theories for junior faculty was developed. A list of key papers on theories relevant to medical education was generated using an expert panel, a virtual community of practice synthetic discussion, and a social media call for resources. A threeround, Delphi-informed voting methodology including novice and expert educators produced a rank order of the top papers. These educators identified 34 unique papers. Eleven papers described the general use of education theory, while 23 papers focused on a specific theory. The top three papers on general education theories and top five papers on specific education theory were selected and summarized. The relevance of each paper for junior faculty and faculty developers is also presented. This paper presents a reading list of key papers for junior faculty in medical education roles. Three papers about general education theories and five papers about specific educational theories are identified and annotated. These papers may help provide foundational knowledge in education theory to inform junior faculty teaching practice. [West J Emerg Med. 2017;18(2293-302.

  14. White Paper on Modelling

    NARCIS (Netherlands)

    Van Bloemendaal, Karen; Dijkema, Gerard P.J.; Woerdman, Edwin; Jong, Mattheus


    This White Paper provides an overview of the modelling approaches adopted by the project partners in the EDGaR project 'Understanding Gas Sector Intra- and Inter- Market interactions' (UGSIIMI). The paper addresses three types of models: complementarity modelling, agent-based modelling and property

  15. Software papers and citation in the AAS Journals (United States)

    Robitaille, Thomas; Lintott, Chris


    At the start of 2016, AAS Publishing released a policy statement that officially opened the door for papers describing novel software to be published in the AAS Journals without a requirement for novel results to also be included. This statement also describes how the use of software should be cited in articles. In this talk, I will give an overview of this policy and will give an overview of the growth of software papers and software citation in AAS Journals over the last two years.

  16. Paper Punch Tape

    CERN Multimedia

    Physicists coded and recorded their programs through series of holes on punch paper tape or on punched cards. It was popular in the 1970s due to its high throughput speed and low cost, paper tape was one of the original data storage methods for computers. Information was encoded in the distinct pattern of holes punched in the paper; the paper itself was oiled to facilitate being run through the reading mechanism and to prevent tears due to brittleness. Though the paper was cheap, it had low storage capacity (only a few dozen kilobytes per roll) and the machinery involved in punching the holes was quite expensive. Higher capacity alternatives, such as magnetic tape, has get developped.

  17. Chapter 35: Describing Data and Data Collections in the VO (United States)

    Kent, B. R.; Hanisch, R. J.; Williams, R. D.

    The list of numbers: 19.22, 17.23, 18.11, 16.98, and 15.11, is of little intrinsic interest without information about the context in which they appear. For instance, are these daily closing stock prices for your favorite investment, or are they hourly photometric measurements of an increasingly bright quasar? The information needed to define this context is called metadata. Metadata are data about data. Astronomers are familiar with metadata through the headers of FITS files and the names and units associated with columns in a table or database. In the VO, metadata describe the contents of tables, images, and spectra, as well as aggregate collections of data (archives, surveys) and computational services. Moreover, VO metadata are constructed according to rules that avoid ambiguity and make it clear whether, in the example above, the stock prices are in dollars or euros, or the photometry is Johnson V or Sloan g. Organization of data is important in any scientific discipline. Equally crucial are the descriptions of that data: the organization publishing the data, its creator or the person making it available, what instruments were used, units assigned to measurement, calibration status, and data quality assessment. The Virtual Observatory metadata scheme not only applies to datasets, but to resources as well, including data archive facilities, searchable web forms, and online analysis and display tools. Since the scientific output flowing from large datasets depends greatly on how well the data are described, it is important for users to understand the basics of the metadata scheme in order to locate the data that they want and use it correctly. Metadata are the key to data discovery and data and service interoperability in the Virtual Observatory.

  18. Construction-Paper Puzzle Masterpieces (United States)

    Vance, Shelly


    Creating an appreciation of art history in her junior-high students has always been one of the author's greatest challenges as an art teacher. In this article, the author describes how her eighth-grade students re-created a famous work of art--piece by piece, like a puzzle or a stained-glass window--out of construction paper. (Contains 1 resource.)

  19. Lineage grammars: describing, simulating and analyzing population dynamics. (United States)

    Spiro, Adam; Cardelli, Luca; Shapiro, Ehud


    Precise description of the dynamics of biological processes would enable the mathematical analysis and computational simulation of complex biological phenomena. Languages such as Chemical Reaction Networks and Process Algebras cater for the detailed description of interactions among individuals and for the simulation and analysis of ensuing behaviors of populations. However, often knowledge of such interactions is lacking or not available. Yet complete oblivion to the environment would make the description of any biological process vacuous. Here we present a language for describing population dynamics that abstracts away detailed interaction among individuals, yet captures in broad terms the effect of the changing environment, based on environment-dependent Stochastic Tree Grammars (eSTG). It is comprised of a set of stochastic tree grammar transition rules, which are context-free and as such abstract away specific interactions among individuals. Transition rule probabilities and rates, however, can depend on global parameters such as population size, generation count, and elapsed time. We show that eSTGs conveniently describe population dynamics at multiple levels including cellular dynamics, tissue development and niches of organisms. Notably, we show the utilization of eSTG for cases in which the dynamics is regulated by environmental factors, which affect the fate and rate of decisions of the different species. eSTGs are lineage grammars, in the sense that execution of an eSTG program generates the corresponding lineage trees, which can be used to analyze the evolutionary and developmental history of the biological system under investigation. These lineage trees contain a representation of the entire events history of the system, including the dynamics that led to the existing as well as to the extinct individuals. We conclude that our suggested formalism can be used to easily specify, simulate and analyze complex biological systems, and supports modular

  20. Einstein's revolutionary paper

    International Nuclear Information System (INIS)

    Rigden, John S.


    Although Einstein wrote five fundamental papers in 1905, only one - the article showing that light consists of discrete quantum particles - was truly revolutionary, argues John S. Rigden. Einstein's annus mirabilis of 1905 is rightly a cause for celebration. In less than seven months, Einstein wrote five history-making papers. He proposed the particle theory of light, developed a method to measure molecular dimensions, explained the long-puzzling Brownian motion, developed the theory of special relativity, and he finished his intellectual sprint by producing the world's most famous equation, E = mc 2 . The creative outpouring that Einstein exhibited in 1905 stands alone in the history of physics. After 100 years of sweeping advances in the subject since then, the content of these papers remains at the bedrock of our discipline. But although all of Einstein's 1905 papers were fundamental, only one paper was truly revolutionary. What makes a physics paper revolutionary? Perhaps the most important requirement is that it contains a 'big idea'. Next, the big idea must contradict the accepted wisdom of its time. Third, physicists capable of judging the intrinsic merit of the big idea typically reject it until they are forced to accept it. Finally, the big idea must survive and eventually become part of the woodwork of physics. Only Einstein's March paper 'On a heuristic point of view concerning the production and transformation of light' (Ann. Phys., Lpz 17 132-148) meets these criteria. (U.K.)

  1. Deformable paper origami optoelectronic devices

    KAUST Repository

    He, Jr-Hau


    Deformable optoelectronic devices are provided, including photodetectors, photodiodes, and photovoltaic cells. The devices can be made on a variety of paper substrates, and can include a plurality of fold segments in the paper substrate creating a deformable pattern. Thin electrode layers and semiconductor nanowire layers can be attached to the substrate, creating the optoelectronic device. The devices can be highly deformable, e.g. capable of undergoing strains of 500% or more, bending angles of 25° or more, and/or twist angles of 270° or more. Methods of making the deformable optoelectronic devices and methods of using, e.g. as a photodetector, are also provided.

  2. Distribution System White Papers (United States)

    EPA worked with stakeholders and developed a series of white papers on distribution system issues ranked of potentially significant public health concern (see list below) to serve as background material for EPA, expert and stakeholder discussions.

  3. Link to paper (United States)

    U.S. Environmental Protection Agency — Link to the paper. This dataset is associated with the following publication: Naile, J., A.W. Garrison, J. Avants, and J. Washington. Isomers/enantiomers of...

  4. Introduction | Voice | Philosophical Papers

    African Journals Online (AJOL)

    Philosophical Papers. Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives · Journal Home > Vol 35, No 3 (2006) >. Log in or Register to get access to full text downloads.

  5. Introduction | Metz | Philosophical Papers

    African Journals Online (AJOL)

    Philosophical Papers. Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives · Journal Home > Vol 34, No 3 (2005) >. Log in or Register to get access to full text downloads.

  6. Quantum interaction. Selected papers

    Energy Technology Data Exchange (ETDEWEB)

    Atmanspacher, Harald [Eidgenoessische Technische Hochschule, Zurich (Switzerland); Haven, Emmanuel [Leicester Univ. (United Kingdom). School of Management; Kitto, Kirsty [Queensland Univ. of Technology, Brisbane, QLD (Australia); Raine, Derek (ed.) [Leicester Univ. (United Kingdom). Centre for Interdisciplinary Science


    This book constitutes the refereed proceedings of the 7th International Conference on Quantum Interaction, QI 2013, held in Leicester, UK, in July 2013. The 31 papers presented in this book were carefully selected from numerous submissions. The papers cover various topics on quantum interaction and revolve around four themes: information processing/retrieval/semantic representation and logic; cognition and decision making; finance/economics and social structures and biological systems.

  7. Abstracts of contributed papers

    Energy Technology Data Exchange (ETDEWEB)


    This volume contains 571 abstracts of contributed papers to be presented during the Twelfth US National Congress of Applied Mechanics. Abstracts are arranged in the order in which they fall in the program -- the main sessions are listed chronologically in the Table of Contents. The Author Index is in alphabetical order and lists each paper number (matching the schedule in the Final Program) with its corresponding page number in the book.

  8. North American matsutake: names clarified and a new species described. (United States)

    Trudell, Steven A; Xu, Jianping; Saar, Irja; Justo, Alfredo; Cifuentes, Joaquin


    Tricholoma matsutake, known widely as "matsutake," has great commercial and cultural significance in Japan. Because Japanese production is insufficient to meet the high domestic demand, morphologically similar mushrooms, thought by many to belong to T. magnivelare, are imported from western North America. However, molecular data produced since the early 2000s have indicated that more than one species of matsutake occur in North America and this raises the question of correct naming for the different species. To address this question, we assessed the phylogenetic diversity within North American matsutake based on nuc rDNA ITS1-5.8S-ITS2 (internal transcribed spacer [ITS] barcode) sequences, including newly obtained sequences from the type collections for Agaricus ponderosus and Armillaria arenicola, and morphological characters. Our results agree with earlier indications that three matsutake species occur in North America and allow us to clarify the correct application of names-T. magnivelare from the eastern USA and Canada, T. murrillianum from the western USA and Canada, and T. mesoamericanum from Mexico, newly described here. The existence of the three North American species is further supported by the results of evolutionary divergence analysis, geographical distributions, and morphological characters.

  9. Kinetic isotope effects and how to describe them

    Directory of Open Access Journals (Sweden)

    Konstantin Karandashev


    Full Text Available We review several methods for computing kinetic isotope effects in chemical reactions including semiclassical and quantum instanton theory. These methods describe both the quantization of vibrational modes as well as tunneling and are applied to the ⋅H + H2 and ⋅H + CH4 reactions. The absolute rate constants computed with the semiclassical instanton method both using on-the-fly electronic structure calculations and fitted potential-energy surfaces are also compared directly with exact quantum dynamics results. The error inherent in the instanton approximation is found to be relatively small and similar in magnitude to that introduced by using fitted surfaces. The kinetic isotope effect computed by the quantum instanton is even more accurate, and although it is computationally more expensive, the efficiency can be improved by path-integral acceleration techniques. We also test a simple approach for designing potential-energy surfaces for the example of proton transfer in malonaldehyde. The tunneling splittings are computed, and although they are found to deviate from experimental results, the ratio of the splitting to that of an isotopically substituted form is in much better agreement. We discuss the strengths and limitations of the potential-energy surface and based on our findings suggest ways in which it can be improved.

  10. Armillaria mexicana, a newly described species from Mexico. (United States)

    Elías-Román, Rubén Damián; Medel-Ortiz, Rosario; Alvarado-Rosales, Dionicio; Hanna, John W; Ross-Davis, Amy L; Kim, Mee-Sook; Klopfenstein, Ned B


    Armillaria mexicana (Agaricales, Physalacriaceae) is described as a new species based on morphology, DNA sequence data, and phylogenetic analyses. It clearly differs from previously reported Armillaria species in North, Central, and South America. It is characterized by the absence of fibulae in the basidioma, abundant cheilocystidia, and ellipsoidal, hyaline basidiospores that are apparently smooth under light microscope, but slightly to moderately rugulose under scanning electron microscope. It is differentiated from other Armillaria species by macromorphological characters, including annulus structure, pileus and stipe coloration, and other structures. DNA sequence data (nuc rDNA internal transcribed spacers [ITS1-5.8S-ITS2 = ITS], 28S D-domain, 3' end of 28S intergenic spacer 1, and translation elongation factor 1-α [TEF1]) show that A. mexicana sequences are quite distinct from sequences of analogous Armillaria species in GenBank. In addition, sequences of ITS of the A. mexicana ex-type culture reveal an ITS1 of 1299 bp and an ITS2 of 582 bp, the longest ITS regions reported thus far in fungi. Phylogenetic analysis based on TEF1 sequences place A. mexicana in a well-separated, monophyletic clade basal to the polyphyletic A. mellea complex.

  11. Fabrication of paper based microfluidic devices

    CSIR Research Space (South Africa)

    Govindasamy, K


    Full Text Available This paper describes an inexpensive method of fabricating paper based microfluidic devices, a new point of care technology. The method uses a solid ink printer, chromatography paper and a heating source. The printer deposits wax onto the surface...

  12. A self-describing file protocol for simulation integration and shared postprocessors

    International Nuclear Information System (INIS)

    Borland, M.


    A typical accelerator physics code uses a combination of text output, unformatted output, and special-purpose graphics to present results to the user. Most users must learn multiple graphics and postprocessing systems; many resort to manual extraction of data from text output, creation of customized postprocessing programs, and even modification of the simulation code. This situation slows research, results in duplication of effort, hampers unforeseen use of simulation output, and makes program upgrades potentially traumatic. This paper discusses the design and use of a self-describing file protocol that addresses these problems. An extensive toolkit of generic post-processing programs, including sophisticated graphics, is available. This system has been used for most of the data collection for Advanced Photon Source (APS) commissioning , and is incorporated into a number of simulation codes

  13. PaperBLAST: Text Mining Papers for Information about Homologs. (United States)

    Price, Morgan N; Arkin, Adam P


    Large-scale genome sequencing has identified millions of protein-coding genes whose function is unknown. Many of these proteins are similar to characterized proteins from other organisms, but much of this information is missing from annotation databases and is hidden in the scientific literature. To make this information accessible, PaperBLAST uses EuropePMC to search the full text of scientific articles for references to genes. PaperBLAST also takes advantage of curated resources (Swiss-Prot, GeneRIF, and EcoCyc) that link protein sequences to scientific articles. PaperBLAST's database includes over 700,000 scientific articles that mention over 400,000 different proteins. Given a protein of interest, PaperBLAST quickly finds similar proteins that are discussed in the literature and presents snippets of text from relevant articles or from the curators. PaperBLAST is available at IMPORTANCE With the recent explosion of genome sequencing data, there are now millions of uncharacterized proteins. If a scientist becomes interested in one of these proteins, it can be very difficult to find information as to its likely function. Often a protein whose sequence is similar, and which is likely to have a similar function, has been studied already, but this information is not available in any database. To help find articles about similar proteins, PaperBLAST searches the full text of scientific articles for protein identifiers or gene identifiers, and it links these articles to protein sequences. Then, given a protein of interest, it can quickly find similar proteins in its database by using standard software (BLAST), and it can show snippets of text from relevant papers. We hope that PaperBLAST will make it easier for biologists to predict proteins' functions.

  14. EDITORIAL: MST Best Paper Award for 2003 (United States)

    Gill, Patrick


    For the last 12 years, Measurement Science and Technology has awarded a Best Paper prize. The Editorial Board of the journal believes that such a prize is an opportunity to thank authors for submitting their work, and serves as an integral part of the on-going quality review of the journal. An Editorial Board working party, comprising Patrick Gill (Chairman), Ralph Tatam and David Birch, was convened to determine a single contributed paper describing new and significant work, well aligned with the measurement scope of the journal, and presented in clear and rigorous form. They received a number of recommendations from the Editorial and International Advisory Board Members, and they would like to record their thanks to the Members for these recommendations, as they form an all-important first stage in the assessment process. There were responses from some 12 Board Members. In total, there were 31 papers nominated. To aid the process, additional information in the form of the 2003 MST papers top rated by referees, and the top papers ranked by most electronic accesses, was accessed. Reviews, and papers which included a Board Member as an author, were automatically excluded. From the totality of nominations and working party deliberations, there emerged a clear winner. Thus the paper recommended by the working party for the MST Best Paper Award for 2003 is: 'Extension of the torsional crystal viscometer to measurements in the time domain' by Richard F Hafer and Arno Laesecke, 14 663-673 (2003) This paper describes a significant advance in viscosity measurement using torsional vibration in piezoelectric rods. The method reported here demonstrates the use of free-decay time-domain measurements as opposed to the more established steady-state forced-mode resonance technique. The time domain technique is faster and more sensitive, with the potential for improved accuracy due to the lack of large time constants necessary for the interpretation of forced mode data. It offers

  15. Rare thoracic cancers, including peritoneum mesothelioma

    NARCIS (Netherlands)

    Siesling, Sabine; van der Zwan, Jan Maarten; Izarzugaza, Isabel; Jaal, Jana; Treasure, Tom; Foschi, Roberto; Ricardi, Umberto; Groen, Harry; Tavilla, Andrea; Ardanaz, Eva

    Rare thoracic cancers include those of the trachea, thymus and mesothelioma (including peritoneum mesothelioma). The aim of this study was to describe the incidence, prevalence and survival of rare thoracic tumours using a large database, which includes cancer patients diagnosed from 1978 to 2002,

  16. Rare thoracic cancers, including peritoneum mesothelioma

    NARCIS (Netherlands)

    Siesling, Sabine; Zwan, J.M.V.D.; Izarzugaza, I.; Jaal, J.; Treasure, T.; Foschi, R.; Ricardi, U.; Groen, H.; Tavilla, A.; Ardanaz, E.


    Rare thoracic cancers include those of the trachea, thymus and mesothelioma (including peritoneum mesothelioma). The aim of this study was to describe the incidence, prevalence and survival of rare thoracic tumours using a large database, which includes cancer patients diagnosed from 1978 to 2002,

  17. Static, Lightweight Includes Resolution for PHP

    NARCIS (Netherlands)

    M.A. Hills (Mark); P. Klint (Paul); J.J. Vinju (Jurgen)


    htmlabstractDynamic languages include a number of features that are challenging to model properly in static analysis tools. In PHP, one of these features is the include expression, where an arbitrary expression provides the path of the file to include at runtime. In this paper we present two

  18. Recycled Paper Beam Sculpture (United States)

    Keller, Kristin; Tabacchi, Jo


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

  19. Both Automation and Paper. (United States)

    Purcell, Royal


    Discusses the concept of a paperless society and the current situation in library automation. Various applications of automation and telecommunications are addressed, and future library automation is considered. Automation at the Monroe County Public Library in Bloomington, Indiana, is described as an example. (MES)

  20. Aluminium and Alzheimer's disease: the science that describes the link

    National Research Council Canada - National Science Library

    Exley, Christopher


    ... that has been encircled is the gene for the amyloid precursor protein. (Thanks to Walter Lukiw for supplying this information.) Aluminium and Alzheimer's Disease: The Science that Describes the LinkAluminium and Alzheimer's Disease The Science that Describes the Link Edited by Christopher Exley Birchall Centre for Inorganic Chemistry and Materials Scienc...

  1. IDEA papers no. 1

    International Nuclear Information System (INIS)

    Garrigues, P.


    The Information network on the Economic Development in Aquitaine (IDEA) aims to collect and spread the environmental information concerning the Aquitaine, in order to implement an observatory of the regional environment and of the sustainable development. The IDEA paper no. 1 provides information such as, meeting, Internet addresses and programs, for the month of April 2002. (A.L.B.)

  2. IDEA papers no 6

    International Nuclear Information System (INIS)

    Garrigues, Ph.


    The Information network on the Economic Development in Aquitaine (IDEA) aims to collect and spread the environmental information concerning the Aquitaine, in order to implement an observatory of the regional environment and of the sustainable development. The IDEA paper no. 6 is presents the association and the results of the ordinary general assembly of the 28 June 2003. (A.L.B.)

  3. Taming the paper tiger

    International Nuclear Information System (INIS)

    Hooper, W.


    The mountain of paper and digital records which the nuclear industry accumulates creates a huge management problem, one that must be dealt with rigorously to avoid serious safety and financial risks. Recent developments in the technology of ''engineering document management'', together with advances in management understanding, have led to systems to control the problem, offering companies various strategic advantages as well. (author)

  4. Eleven papers in analysis

    CERN Document Server

    Shabalin, P L; Yakubenko, A A; Pokhilevich, VA; Krein, M G


    This collection of eleven papers covers a broad spectrum of topics in analysis, from the study of certain classes of analytic functions to the solvability of singular problems for differential and integral equations to computational schemes for the partial differential equations and singular integral equations.

  5. iPhone paper (United States)


    Could you write a scientific manuscript using just your iPhone? Well, when Christoph Bartneck at the University of Canterbury in New Zealand was invited to submit a paper to the International Conference on Atomic and Nuclear Physics, in Atlanta, Georgia, in November, he decided to do just that.

  6. Paper relief architecture

    NARCIS (Netherlands)

    Latka, J.F.


    The article presents two contemporary projects of paper structures relief architecture designed and built by Shigeru Ban Architects and Voluntary Architect Network. Author of the article took part in design and construction process of one of the projects. The project of Yaan Nursery School, which

  7. Abstracts of submitted papers

    International Nuclear Information System (INIS)


    The conference proceedings contain 152 abstracts of presented papers relating to various aspects of personnel dosimetry, the dosimetry of the working and living environment, various types of dosemeters and spectrometers, the use of radionuclides in various industrial fields, the migration of radionuclides on Czechoslovak territory after the Chernobyl accident, theoretical studies of some parameters of ionizing radiation detectors, and their calibration. (M.D.)

  8. Two three pages papers

    NARCIS (Netherlands)

    Apt, K.R.; Constable, R.L.; Silva, A.


    Dexter was my manager during the first 8 months or so of my one year stay at the IBM Research Center at Yorktown Heights in the mid eighties. Our interaction in terms of scientific output was very slim — it consisted of just a single paper, titled "Limits for automatic verification of finite-state

  9. IDEA papers no 10

    International Nuclear Information System (INIS)

    Ricard, M.


    The Information network on the Economic Development in Aquitaine (IDEA) aims to collect and spread the environmental information concerning the Aquitaine, in order to implement an observatory of the regional environment and of the sustainable development. The IDEA paper no.10 is devoted to the sustainable development education. Examples of actions in agriculture schools and colleges are presented. (A.L.B.)


    African Journals Online (AJOL)


    and implication of slow pace of technology transfer and adoption in rural agriculture. Based on this major objective, the paper among other specific objectives, examines the role of extension agent in technology transfer and adoption, identify factor militating against technology transfer and adoption, unveil the implication ...

  11. Characterization of Paper Heterogeneity (United States)

    John M. Considine


    Paper and paperboard are the most widely-used green materials in the world because they are renewable, recyclable, reusable, and compostable. Continued and expanded use of these materials and their potential use in new products requires a comprehensive understanding of the variability of their mechanical properties.

  12. From Paper to PDA

    DEFF Research Database (Denmark)

    Kanstrup, Anne Marie; Stage, Jan


    Mobile devices with small screens and minimal facilities for interaction are increasingly being used in complex human activities for accessing and processing information, while the user is moving. This paper presents a case study of the design and evaluation of a mobile system, which involved...

  13. Download the discussion papers

    International Development Research Centre (IDRC) Digital Library (Canada)

    Development, underscored in his key note speech, “cutting edge research that produces evidence on what works and what doesn't to enhance resilience to disaster and promote more effective response is urgently needed.” The Canadian Humanitarian Conference represents the first step toward that end. The papers ...

  14. IDEA papers no 3

    International Nuclear Information System (INIS)

    Lacour, C.


    The Information network on the Economic Development in Aquitaine (IDEA) aims to collect and spread the environmental information concerning the Aquitaine, in order to implement an observatory of the regional environment and of the sustainable development. The IDEA paper no. 3 is devoted to the part of the environment observation in the sustainable development implementation. (A.L.B.)

  15. Quantum Entanglements: Selected Papers

    International Nuclear Information System (INIS)

    Giannetto, E


    This book is a sort of tribute to Rob Clifton (1964-2002), Associate Professor of Philosophy and Associate Director of the Center for Philosophy of Science at the University of Pittsburgh, philosopher of physics and editor of the journal Studies in the History and Philosophy of Modern Physics, who tragically died of cancer. It contains fourteen papers by Clifton, for the most part written in collaboration with other authors (Jeffrey Bub (2), Sheldon Goldstein, Michael Dickson, Hans Halvorson (6), Adrian Kent (2)), published between 1995 and 2002. The choice of papers made by the editors is very impressive. They concern the foundations of quantum mechanics and quantum field theory. Among the issues discussed are the modal interpretations of quantum mechanics, the problems of hidden variables theories, non-locality, Bell's inequality, the Einstein-Podolsky-Rosen paradox, Lorentz invariance, de-coherence, non-contextuality, complementarity, entanglement and quantum information. A consequence of such investigations is that non-separability is a more complex issue than violation of Bell's inequality. Apart from the perspective one can follow-whether one agrees or not with Clifton-these papers are effective contributions to an understanding of the problems involved in the foundations of quantum mechanics. The most interesting parts, in my opinion, are related to the extension of the discussion of foundational problems to quantum field theory: on the algebraic approach, and on the twin concepts of particle and vacuum. Non-locality appears to be 'worse' in relativistic quantum field theory than in non-relativistic quantum mechanics. All the papers deal with relevant epistemological and even historical aspects of quantum mechanics interpretations, but all the issues are discussed from a technical, logical and mathematical approach. A complete bibliography of Clifton's papers is given at the end of the volume. (book review)

  16. Paper. Environmental Ecological Education Project. Revised. (United States)

    Parkway School District, Chesterfield, MO.

    This unit is designed to help the intermediate elementary school student become aware of the history of paper, the papermaking process, the variety of uses and kinds of paper, the economic aspects of the paper industry, and the importance of recycling. It includes 13 major concepts relating to paper, the behavioral objectives and expected student…

  17. The Tritium White Paper

    International Nuclear Information System (INIS)


    This publication proposes a synthesis of the activities of two work-groups between May 2008 and April 2010. It reports the ASN's (the French Agency for Nuclear Safety) point of view, describes its activities and actions, and gives some recommendations. It gives a large and detailed overview of the knowledge status on tritium: tritium source inventory, tritium origin, management processes, capture techniques, reduction, tritium metrology, impact on the environment, impacts on human beings

  18. Enhanced battery model including temperature effects

    NARCIS (Netherlands)

    Rosca, B.; Wilkins, S.


    Within electric and hybrid vehicles, batteries are used to provide/buffer the energy required for driving. However, battery performance varies throughout the temperature range specific to automotive applications, and as such, models that describe this behaviour are required. This paper presents a

  19. Paper-based plasma sanitizers (United States)

    Xie, Jingjin; Chen, Qiang; Suresh, Poornima; Roy, Subrata; White, James F.; Mazzeo, Aaron D.


    This work describes disposable plasma generators made from metallized paper. The fabricated plasma generators with layered and patterned sheets of paper provide a simple and flexible format for dielectric barrier discharge to create atmospheric plasma without an applied vacuum. The porosity of paper allows gas to permeate its bulk volume and fuel plasma, while plasma-induced forced convection cools the substrate. When electrically driven with oscillating peak-to-peak potentials of ±1 to ±10 kV, the paper-based devices produced both volume and surface plasmas capable of killing microbes. The plasma sanitizers deactivated greater than 99% of Saccharomyces cerevisiae and greater than 99.9% of Escherichia coli cells with 30 s of noncontact treatment. Characterization of plasma generated from the sanitizers revealed a detectable level of UV-C (1.9 nWṡcm-2ṡnm-1), modest surface temperature (60 °C with 60 s of activation), and a high level of ozone (13 ppm with 60 s of activation). These results deliver insights into the mechanisms and suitability of paper-based substrates for active antimicrobial sanitization with scalable, flexible sheets. In addition, this work shows how paper-based generators are conformable to curved surfaces, appropriate for kirigami-like “stretchy” structures, compatible with user interfaces, and suitable for sanitization of microbes aerosolized onto a surface. In general, these disposable plasma generators represent progress toward biodegradable devices based on flexible renewable materials, which may impact the future design of protective garments, skin-like sensors for robots or prosthetics, and user interfaces in contaminated environments.

  20. IDEA papers no 2

    International Nuclear Information System (INIS)

    Cassou, O.


    The Information network on the Economic Development in Aquitaine (IDEA) aims to collect and spread the environmental information concerning the Aquitaine, in order to implement an observatory of the regional environment and of the sustainable development. The IDEA paper no. 2 is devoted to the IDEA missions and their cooperation with ''Alliance pour la qualite et la performance''. This association groups actors for the development and the promotion of the quality. (A.L.B.)

  1. IDEA papers no 8

    International Nuclear Information System (INIS)

    Gillet, M.


    The Information network on the Economic Development in Aquitaine (IDEA) aims to collect and spread the environmental information concerning the Aquitaine, in order to implement an observatory of the regional environment and of the sustainable development. The IDEA paper no 8 presents the regional energy observatories and some news on the wood energy experience, the thermal and energetic improvement of buildings and the green certificates in Aquitaine. (A.L.B.)

  2. IDEA papers no 7

    International Nuclear Information System (INIS)

    Ducout, P.


    The Information network on the Economic Development in Aquitaine (IDEA) aims to collect and spread the environmental information concerning the Aquitaine, in order to implement an observatory of the regional environment and of the sustainable development. The IDEA paper no. 7 is devoted to the water quality and management in Gironde. The european framework directive on water and the humid zones are discussed. (A.L.B.)

  3. Recycling waste-paper (United States)

    Widener, Edward L.


    Perhaps 80 percent of papermaking energy is expended in chemical pulping of vegetable cellulose, a natural polymer. Commercial supplies of wood, bagasse, cotton and flax are valued as renewable resources and bio-mass assets; however, few enterprises will salvage waste-paper and cardboard from their trash. A basic experiment in the Materials Lab uses simple equipment to make crude handsheets. Students learn to classify secondary fibers, identify contraries, and estimate earnings.

  4. IDEA papers no 11

    International Nuclear Information System (INIS)

    Bocquet, R.


    The Information network on the Economic Development in Aquitaine (IDEA) aims to collect and spread the environmental information concerning the Aquitaine, in order to implement an observatory of the regional environment and of the sustainable development. The IDEA paper no.11 is devoted to the wastes management in Aquitaine. Data on wastes volume, type and recycling are presented and examples of enterprises actions are provided. (A.L.B.)

  5. Pencil and paper

    DEFF Research Database (Denmark)

    Wong, Bang; Kjærgaard, Rikke Schmidt


    Creating pictures is integral to scientific thinking. In the visualization process, putting pencil to paper is an essential act of inward reflec- tion and outward expression. It is a constructive activity that makes our thinking specific and explicit. Compared to other constructive approaches...... such as writing or verbal explanations, visual representa- tion places distinct demands on our reasoning skills by forcing us to contextualize our understanding spatially....

  6. PaperBLAST: Text Mining Papers for Information about Homologs

    International Nuclear Information System (INIS)

    Price, Morgan N.; Arkin, Adam P.


    Large-scale genome sequencing has identified millions of protein-coding genes whose function is unknown. Many of these proteins are similar to characterized proteins from other organisms, but much of this information is missing from annotation databases and is hidden in the scientific literature. To make this information accessible, PaperBLAST uses EuropePMC to search the full text of scientific articles for references to genes. PaperBLAST also takes advantage of curated resources (Swiss-Prot, GeneRIF, and EcoCyc) that link protein sequences to scientific articles. PaperBLAST’s database includes over 700,000 scientific articles that mention over 400,000 different proteins. Given a protein of interest, PaperBLAST quickly finds similar proteins that are discussed in the literature and presents snippets of text from relevant articles or from the curators. With the recent explosion of genome sequencing data, there are now millions of uncharacterized proteins. If a scientist becomes interested in one of these proteins, it can be very difficult to find information as to its likely function. Often a protein whose sequence is similar, and which is likely to have a similar function, has been studied already, but this information is not available in any database. To help find articles about similar proteins, PaperBLAST searches the full text of scientific articles for protein identifiers or gene identifiers, and it links these articles to protein sequences. Then, given a protein of interest, it can quickly find similar proteins in its database by using standard software (BLAST), and it can show snippets of text from relevant papers. We hope that PaperBLAST will make it easier for biologists to predict proteins’ functions.

  7. Connected Paper, EKKO and Analytic Futures: News and Paper Data


    Mills, John; Egglestone, Paul; Lochrie, Mark; Dickinson, Andrew Scott


    Advances in conductive inks and increasingly accessible and flexible platforms, such as Arduino and Raspberry Pi, are allowing researchers to transform a range of surfaces, including paper and additive layer objects, into capacitive surfaces. When imbued with Internet connectivity, and placed within the ‘Internet of things’, opportunities to create interactive surfaces that respond to touch and offer audio playback or other data transfer via additional connected peripherals emerge. This poste...

  8. Describing Simple Data Access Services Version 1.1 (United States)

    Plante, Ray; Demleitner, Markus; Plante, Raymond; Delago, Jesus; Harrison, Paul; Tody, Doug; Plante, Ray; Demleitner, Markus


    An application that queries or consumes descriptions of VO resources must be able to recognize a resource's support for standard IVOA protocols. This specification describes how to describe a service that supports any of the four typed data access protocols - Simple Cone Search (SCS), Simple Image Access (SIA), Simple Spectral Access (SSA), Simple Line Access (SLA) - using the VOResource XML encoding standard. A key part of this specification is the set of VOResource XML extension schemas that define new metadata that are specific to those protocols. This document describes rules for describing such services within the context of IVOA Registries and data discovery as well as the VO Support Interfaces (VOSI) and service self-description. In particular, this document spells out the essential mark-up needed to identify support for a standard protocol and the base URL required to access the interface that supports that protocol.

  9. Chikungunya means 'that which bends up', and describes the ...

    Indian Academy of Sciences (India)

    First page Back Continue Last page Overview Graphics. CHIK virus was first isolated from patients during an epidemic in Tanzania in 1952-53. Chikungunya means 'that which bends up', and describes the symptoms caused by the severe joint pains.

  10. Propositions that describe the intended meaning of Enterprise Architecture

    CSIR Research Space (South Africa)

    Mentz, JC


    Full Text Available In scientific inquiry definitions serves the purpose of describing what something is in terms that are concise, precise and allows for clear communication. Since the start of the enterprise architecture (EA) research field the issue...

  11. Zulma Ageitos de Castellanos: Publications and status of described taxa. (United States)

    Signorelli, Javier H; Urteaga, Diego; Teso, Valeria


    Zulma Ageitos de Castellanos was an Argentinian malacologist working in the "Facultad de Ciencias Naturales y Museo" at La Plata University where she taught invertebrate zoology between 1947 and 1990. Her scientific publications are listed in chronological order. Described genus-group and species-group taxa are listed. Information about the type locality and type material, and taxonomic remarks are also provided. Finally, type material of all described taxa was requested and, when located, illustrated.

  12. Layered recognition networks that pre-process, classify, and describe (United States)

    Uhr, L.


    A brief overview is presented of six types of pattern recognition programs that: (1) preprocess, then characterize; (2) preprocess and characterize together; (3) preprocess and characterize into a recognition cone; (4) describe as well as name; (5) compose interrelated descriptions; and (6) converse. A computer program (of types 3 through 6) is presented that transforms and characterizes the input scene through the successive layers of a recognition cone, and then engages in a stylized conversation to describe the scene.

  13. Exploring the complexities of describing foundation phase teachers’ professional knowledge base

    Directory of Open Access Journals (Sweden)

    Carol Bertram


    Full Text Available The purpose of this paper is to engage with the complexities of describing teachers’ professional knowledge and eventually also their learning through written tests. The bigger research aim is to describe what knowledge foundation phase teachers acquired during their two years of study towards the Advanced Certificate of Teaching (ACT. We designed a written test to investigate the professional knowledge that teachers bring with them when they enrol for the ACT, with the aim of comparing their responses to the same test two years later, when they had completed the programme. The questionnaire included questions on teachers’ content knowledge; their pedagogical content knowledge (in particular, teachers’ knowledge about learner misconceptions, stages of learning, and ways of engaging these in making teaching decisions; and their personal knowledge (such as their beliefs about how children learn and barriers to learning. It spanned the fields of literacy in English and isiZulu, numeracy, and general pedagogy. Eighty-six foundation phase teachers enrolled for the ACT at the University of KwaZulu-Natal completed the questionnaire, and their responses pointed us to further methodological issues. We discuss the assumptions behind the design of the test/questionnaire, the difficulties in formulating relevant questions, and the problems of ‘accessing’ specific elements of teacher knowledge through this type of instrument. Our process shows the difficulties both in constructing questions and in coding the responses, in particular concerning the pedagogical content knowledge component for teachers from Grade R to Grade 3.

  14. Open Education. Introduction to selected papers

    Directory of Open Access Journals (Sweden)

    Inés Gil-Jaurena


    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. Selected papers on analysis and differential equations

    CERN Document Server

    Nomizu, Katsumi


    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.

  16. Immunolabeling of fingermarks left on forensic relevant surfaces, including thermal paper

    NARCIS (Netherlands)

    van Dam, Annemieke; van Nes, Kirsten A.; Aalders, Maurice C. G.; van Leeuwen, Ton G.; Lambrechts, Saskia A. G.


    The chemical composition of a fingermark contains donor profiling information. Immunolabeling is a technique that can be used to retrieve this chemical information from fingermarks. Additionally, immunolabeling can be used to (re) develop fingermarks. To be of interest in the forensic field, the

  17. 75 FR 71464 - Shorewood Packaging, a Subsidiary of International Paper Company, Including On-Site Leased... (United States)


    ..., 2010 (75 FR 54187). The workers produce cigarette cartons. The initial investigation resulted in a... country the production of articles like or directly competitive with cigarette cartons; that neither the... with cigarette cartons; that the subject workers are not adversely affected secondary workers; and the...

  18. Microfluidic System Simulation Including the Electro-Viscous Effect (United States)

    Rojas, Eileen; Chen, C. P.; Majumdar, Alok


    This paper describes a practical approach using a general purpose lumped-parameter computer program, GFSSP (Generalized Fluid System Simulation Program) for calculating flow distribution in a network of micro-channels including electro-viscous effects due to the existence of electrical double layer (EDL). In this study, an empirical formulation for calculating an effective viscosity of ionic solutions based on dimensional analysis is described to account for surface charge and bulk fluid conductivity, which give rise to electro-viscous effect in microfluidics network. Two dimensional slit micro flow data was used to determine the model coefficients. Geometry effect is then included through a Poiseuille number correlation in GFSSP. The bi-power model was used to calculate flow distribution of isotropically etched straight channel and T-junction microflows involving ionic solutions. Performance of the proposed model is assessed against experimental test data.

  19. Origami: Paper Folding--The Algorithmic Way. (United States)

    Heukerott, Pamela Beth


    Describes origami, the oriental art of paper folding as an activity to teach upper elementary students concepts and skills in geometry involving polygons, angles, measurement, symmetry, and congruence. (PK)

  20. Crop resources. [18 papers

    Energy Technology Data Exchange (ETDEWEB)

    Seigler, D.S. (ed.)


    Eighteen papers originally presented as a symposium on Crop Resources at the 17th annual meeting of the Society for Economic Botany in Urbana, Illinois, June 13 to 17, 1976 comprise this book. The papers are: Potential Wealth in New Crops: Research and Development, L. H. Princen; Plant Introductions--A Source of New Crops, George A. White; Nonfood Uses for Commercial Vegetable Oil Crops, E. H. Pryde; New Industrial Potentials for Carbohydrates, F. H. Otey; The Current Importance of Plants as a Source of Drugs, Norman R. Farnsworth; Potentials for Development of Wild Plants as Row Crops for Use by Man, Arnold Krochmal and Connie Krochmal; Recent Evidence in Support of the Tropical Origin of New World Crops, C. Earle Smith, Jr.; Requirements for a Green Revolution, G. F. Sprague; How Green Can a Revolution Be, Jack R. Harlan; Increasing Cereal Yields: Evolution under Domestication, J. M. J. de Wet; Hevea Rubber: Past and Future, Ernest P. Imle; Horseradish--Problems and Research in Illinois, A. M. Rhodes; Dioscorea--The Pill Crop, Norman Applezweig; Plant Derivatives for Insect Control, Robert L. Metcalf; Evolutionary Dynamics of Sorghum Domestication, J. M. J. de Wet and Y. Shecter; The Origin and Future of Wheat, E. R. Sears; Current Thoughts on Origins, Present Status, and Future of Soybeans, T. Hymowitz and C. A. Newell; and The Origin of Corn--Studies of the Last Hundred Years, Garrison Wilkes. (MCW)

  1. Corrosion/95 conference papers

    International Nuclear Information System (INIS)



    The papers in this conference represent the latest technological advances in corrosion control and prevention. The following subject areas are covered: cathodic protection in natural waters; materials for fossil fuel combustion and conversion systems; modern problems in atmospheric corrosion; innovative ideas for controlling the decaying infrastructure; deposits and their effects on corrosion in industry; volatile high temperature and non aqueous corrosion inhibitors; corrosion of light-weight and precoated metals for automotive application; refining industry corrosion; corrosion in pulp and paper industry; arctic/cold weather corrosion; materials selection for waste incinerators and associated equipment; corrosion measurement technology; environmental cracking of materials; advancing technology in the coating industry; corrosion in gas treating; green inhibition; recent advances in corrosion control of rail equipment; velocity effects and erosion corrosion in oil and gas production; marine corrosion; corrosion of materials in nuclear systems; underground corrosion control; corrosion in potable and industrial water systems in buildings and its impact on environmental compliance; deposit related boiler tube failures; boiler systems monitoring and control; recent developments and experiences in reactive metals; microbiologically influenced corrosion; corrosion and corrosion control for steel reinforced concrete; international symposium on the use of 12 and 13 Cr stainless steels in oil and gas production environments; subsea corrosion /erosion monitoring in production facilities; fiberglass reinforced pipe and tubulars in oilfield service; corrosion control technology in power transmission and distribution; mechanisms and methods of scale and deposit control; closing the loop -- results oriented cooling system monitoring and control; and minimization of aqueous discharge

  2. Discussion on Papers 5 - 7

    International Nuclear Information System (INIS)

    Strongman, C.P.; Jones, R.; Moorhead, H.


    The topics raised in discussion included: the performance of the generator sets; the movement of sediments and the effect on beach levels; monitoring near-bed sediments; the erosion of barrage materials by suspended solids; sediment transport models; the accuracy of hydrographic and other surveys; the relative ornithological importance of the estuary with respect to others in the United Kingdom. Separate abstracts were prepared for each of the three papers under discussion. (UK)

  3. Bibliography of published papers, 1977

    International Nuclear Information System (INIS)


    Papers published by RERF (a cooperative Japan-U.S. research organization) personnel mainly in 1977 issues of journals are listed as bibliography giving the title, authors, etc. Mostly in both Japanese and English. The total of about 50 such cover areas as follows; Variety of diseases such as cancer and cardiovascular, dosimetry, genetics, pathology, radiation effects including such as diseases, and summary reports. (Mori, K.)

  4. Center for Beam Physics papers

    Energy Technology Data Exchange (ETDEWEB)

    Sessler, A.M. [ed.


    Six papers are included in this collection. They cover: a second interaction region for gamma-gamma, gamma-electron and electron- electron collisions; constraints on laser-driven accelerators for a high-energy linear collider; progress on the design of a high luminosity muon-muon collider; RF power source development at the RTA test facility; sensitivity studies of crystalline beams; and single bunch collective effects in muon colliders.

  5. Turbulent Evolution of a Plasma Described Through Classical Mechanics Only

    International Nuclear Information System (INIS)

    Escande, D.F.; Elskens, Y.


    For the first time an old dream of the XIXth century comes true: the non trivial evolution of a macroscopic many-body system is described through classical mechanics only. This is done for the relaxation of a warm electron beam in a plasma, which results in the generation of Langmuir turbulence and in the formation of a plateau in the velocity distribution function of the electrons. Our derivation starts from the hamiltonian describing the one-dimensional N-body system corresponding to the beam and plasma bulk electrons in electrostatic interaction. For such a system, the dynamics can be reduced to the resonant interaction of M Langmuir waves with N'( > 1 Langmuir waves with N' >> 1 beam particles. This yields the proof of the classical quasilinear equations describing the coupled evolution of the wave spectrum and of the beam velocity distribution function in the strongly nonlinear regime where their validity is the matter of a longstanding controversy

  6. Algorithm describing pressure distribution of non-contact TNT explosion

    Directory of Open Access Journals (Sweden)

    Radosław Kiciński


    Full Text Available [b]Abstract[/b]. The aim of this study is to develop a computational algorithm, describing the shock wave pressure distribution in the space induced by non-contact TNT explosion. The procedure describes pressure distribution on a damp surface of the hull. Simulations have been carried out using Abaqus/CAE. The study also shows the pressure waveform descriptions provided by various authors and presents them in charts. The formulated conclusions convince efficiency of the algorithm application.[b]Keywords:[/b] Underwater explosion, shock wave, CAE, TNT, Kobben class submarine

  7. An autocatalytic kinetic model for describing microbial growth during fermentation. (United States)

    Ibarz, Albert; Augusto, Pedro E D


    The mathematical modelling of the behaviour of microbial growth is widely desired in order to control, predict and design food and bioproduct processing, stability and safety. This work develops and proposes a new semi-empirical mathematical model, based on an autocatalytic kinetic, to describe the microbial growth through its biomass concentration. The proposed model was successfully validated using 15 microbial growth patterns, covering the three most important types of microorganisms in food and biotechnological processing (bacteria, yeasts and moulds). Its main advantages and limitations are discussed, as well as the interpretation of its parameters. It is shown that the new model can be used to describe the behaviour of microbial growth.

  8. Stability of interconnected dynamical systems described on Banach spaces (United States)

    Rasmussen, R. D.; Michel, A. N.


    New stability results for a large class of interconnected dynamical systems (also called composite systems or large scale systems) described on Banach spaces are established. In the present approach, the objective is always the same: to analyze large scale systems in terms of their lower order and simpler subsystems and in terms of their interconnecting structure. The present results provide a systematic procedure of analyzing hybrid dynamical systems (i.e., systems that are described by a mixture of different types of equations). To demonstrate the method of analysis advanced, two specific examples are considered.

  9. 2003 Agribusiness Group Paper (United States)


    clustering of US farms. Most farms are located in the middle of the country. The arid, drought-prone deserts of the west also produce farm products, many...undergo modification include corn, soybeans, cotton, potatoes, squash, and papaya .[51] Dr. Autar K. Mattoo, a research leader at the USDA Agricultural

  10. Paper 2: Process characterisation

    African Journals Online (AJOL)


    The operational factors having a significant effect on in-line prefermentation efficiency include the sludge recycle rate and the subsequent sludge elutriation rate, solids concentrations and retention times. The prefermenter configuration employed is a determining factor, which allows for some degree of operational flexibility.

  11. 40 CFR 247.10 - Paper and paper products. (United States)


    ... 40 Protection of Environment 24 2010-07-01 2010-07-01 false Paper and paper products. 247.10... COMPREHENSIVE PROCUREMENT GUIDELINE FOR PRODUCTS CONTAINING RECOVERED MATERIALS Item Designations § 247.10 Paper and paper products. Paper and paper products, excluding building and construction paper grades. ...

  12. Opportunities in the United States for Education in Book and Paper Conservation and Preservation. (United States)

    Holden, Jill R. J.

    This paper describes opportunities for education in the United States in the field of book and paper conservation and preservation. Included is information on programs of study; internships; and courses, workshops, and seminars. Also provided is a list of organizations (with addresses and telephone numbers) and publications concerned with the…

  13. Deaf Autism: Common Instructional Practices Described by Deaf Educators (United States)

    Rutledge, Felicia


    The purpose of this research study was to identify common instructional practices described by teachers of the deaf with students who are deaf with autism that increase both student engagement and instructional outcomes. As the diversity of students increase within deaf/hard of hearing programs, research is emerging in the area of deaf autism.…

  14. Performance of density functional theory methods to describe ...

    Indian Academy of Sciences (India)

    ... Lecture Workshops · Refresher Courses · Symposia · Live Streaming. Home; Journals; Journal of Chemical Sciences; Volume 117; Issue 5. Performance of density functional theory methods to describe intramolecular hydrogen shifts. Nelly González-Rivas Andrés Cedillo. Volume 117 Issue 5 September 2005 pp 555-560 ...

  15. Educational Language Practices Described by Preschool Teachers in Norwegian Kindergartens (United States)

    Hansen, Joakim Evensen; Alvestad, Marit


    This article focuses on educational language practices as described by preschool teachers in Norwegian kindergartens in groups consisting of one- to three-year-old children. Research indicates a relationship between high-quality childcare and language development, yet there is a need for more research on educational practices in high-quality…

  16. Stochastic Oscillations of General Relativistic Disks Described by a ...

    Indian Academy of Sciences (India)

    A generalized Langevin equation driven by fractional Brownian motion is used to describe the vertical oscillations of general relativistic disks. By means of numerical calculation method, the displacements, velocities and luminosities of oscillating disks are explicitly obtained for different Hurst exponent H . The results show ...

  17. Using the IMS LD Standard to Describe Learning Designs

    NARCIS (Netherlands)

    Koper, Rob; Miao, Yongwu


    Koper, R., & Miao, Y. (2008). Using the IMS LD Standard to Describe Learning Designs. In L. Lockyer, S. Bennet, S. Agostinho & B. Harper (Eds.), Handbook of Research on Learning Design and Learning Objects: Issues, Applications and Technologies (pp. 41-86). IDEA group.

  18. College Students' Judgment of Others Based on Described Eating Pattern (United States)

    Pearson, Rebecca; Young, Michael


    Background: The literature available on attitudes toward eating patterns and people choosing various foods suggests the possible importance of "moral" judgments and desirable personality characteristics associated with the described eating patterns. Purpose: This study was designed to replicate and extend a 1993 study of college students'…

  19. The Tortricidae described by J. C. Fabricius (Lepidoptera)

    DEFF Research Database (Denmark)

    Baixeras, Joaquin; Karsholt, Ole


    The identity and nomenclature of the 88 species of Tortricidae (Lepidoptera) described by J. C. Fabricius are reviewed. Type material deposited in the Natural History Museum Denmark is illustrated. Lectotypes for Tinea compositella (Fabricius, 1775), Pyralis rivellana (Fabricius, 1775) and P...

  20. Describing Elementary Teachers' Operative Systems: A Case Study (United States)

    Dotger, Sharon; McQuitty, Vicki


    This case study introduces the notion of an operative system to describe elementary teachers' knowledge and practice. Drawing from complex systems theory, the operative system is defined as the network of knowledge and practices that constituted teachers' work within a lesson study cycle. Data were gathered throughout a lesson study cycle in which…

  1. Avicenna, the first to describe thyroid-related orbitopathy. (United States)

    Nabipour, Iraj; Burger, Albert; Moharreri, Muhammad-Reza; Azizi, Fereidoun


    The history of the association of goiter and orbital disease is discussed. Although Graves and Basedow are credited with the first descriptions of this association, it was described many years earlier between AD 1000 and 1110 by two Persian physicians and philosophers, Avicenna and Al-Jurjani.

  2. Improving models for describing phosphorus cycling in agricultural soils (United States)

    The mobility of phosphorus in the environment is controlled to a large extent by its sorption to soil. Therefore, an important component of all P loss models is how the model describes the biogeochemical processes governing P sorption and desorption to soils. The most common approach to modeling P c...

  3. 4d-polytopes described by Coxeter diagrams and quaternions

    Energy Technology Data Exchange (ETDEWEB)

    Koca, Mehmet, E-mail: [Sultan Qaboos University College of Science, Physics Department P.O Box 36, Al-Khoudh, 123 Muscat (Oman)


    4D-polytopes and their dual polytopes can be described as the orbits of the rank-4 Coxeter-Weyl groups. Their symmetries follow from the quaternionic descriptions of the rank-4 Coxeter-Dynkin diagrams. There exists a one to one correspondence between the finite subgroups of quaternions and the rank-4 Coxeter-Weyl groups.

  4. How Vocational Teachers Describe Their Vocational Teacher Identity (United States)

    Köpsén, Susanne


    Given the current demands of Swedish vocational education and the withdrawal of the requirement for formal teacher competence in vocational subject teachers, the aim of this article is to develop knowledge of what it means to be a vocational subject teacher in an upper secondary school, i.e. how vocational subject teachers describe their…

  5. Nomenclature proposal to describe vocal fold motion impairment

    NARCIS (Netherlands)

    Rosen, Clark A.; Mau, Ted; Remacle, Marc; Hess, Markus; Eckel, Hans E.; Young, VyVy N.; Hantzakos, Anastasios; Yung, Katherine C.; Dikkers, Frederik G.


    The terms used to describe vocal fold motion impairment are confusing and not standardized. This results in a failure to communicate accurately and to major limitations of interpreting research studies involving vocal fold impairment. We propose standard nomenclature for reporting vocal fold

  6. Nomenclature proposal to describe vocal fold motion impairment

    NARCIS (Netherlands)

    Rosen, Clark A.; Mau, Ted; Remacle, Marc; Hess, Markus; Eckel, Hans E.; Young, VyVy N.; Hantzakos, Anastasios; Yung, Katherine C.; Dikkers, Frederik G.

    The terms used to describe vocal fold motion impairment are confusing and not standardized. This results in a failure to communicate accurately and to major limitations of interpreting research studies involving vocal fold impairment. We propose standard nomenclature for reporting vocal fold

  7. Transparencies used in describing the on-site inspection technologies

    International Nuclear Information System (INIS)

    Patel, V.


    The aim of this presentation is to describe the current status for developing the on-site inspection component of the verification regime, the current status of the the on-site operational manual, on-site inspection techniques, technologies and equipment, status of the training and exercise program and the equipment testing program

  8. Performance of density functional theory methods to describe ...

    Indian Academy of Sciences (India)

    Fukui function shows a small dependence with both the exchange and correlation functional and the basis set. Evolution of the Fukui function along the reaction path describes important changes in the basic sites of the corresponding molecules. These results are in agreement with the chemical behavior of those species.

  9. Superintendents Describe Their Leadership Styles: Implications for Practice (United States)

    Bird, James J.; Wang, Chuang


    Superintendents from eight southeastern United States school districts self-described their leadership styles across the choices of autocratic, laissez-faire, democratic, situational, servant, or transformational. When faced with this array of choices, the superintendents chose with arguable equitableness, indicating that successful leaders can…

  10. Use of the gamma function in equations which describe ruminal ...

    African Journals Online (AJOL)

    Goodness of fit of all the functions used to describe fermentation was tested by comparing predicted values calculated from estimates of the parameters of the function studied, with actual values observed in the nylon bags. For example, the cumulative distribution of the gamma function was calculated from estimates of the ...

  11. Describing, Instantiating and Evaluating a Reference Architecture : A Case Study

    NARCIS (Netherlands)

    Avgeriou, Paris


    The result of a domain maturing is the emergence of reference architectures that offer numerous advantages to software architects and other stakeholders. However there is no straightforward way to describe a reference architecture and in sequence to design instances for specific systems, while at

  12. Motivation: An Updated Analysis. IDEA Paper #59 (United States)

    Svinicki, Marilla D.


    Because instructors are very concerned about how to motivate their students, this paper describes some of the most prominent and practically relevant contemporary theories of motivation, specifically expectancy value theory, goal orientation theory, and self-determination theory. After describing each theory and its basic components, suggestions…

  13. Evaluate, Analyze, Describe (EAD: Confronting Underlying Issues of Racism and Other Prejudices for Effective Intercultural Communication

    Directory of Open Access Journals (Sweden)

    Daniel Velasco


    Full Text Available Racism and other prejudices have hindered efforts to diversify and further many fields, including education, psychology, politics, law, and healthcare (Race for Opportunity, 2010. Although there are many ways to combat these prejudices, intercultural communication continues to be a vital component in assisting individuals and groups with valuing the past, understanding the present, and preparing for the future of communication in a global society (Sadri and Flammia, 2011, p. 19. This paper provides a brief overview of pertinent research and major theories related to communicating with people of different cultural backgrounds, as well as useful techniques and strategies to use when teaching in international or multinational classrooms, and working or consulting in international or multinational companies, organizations, and educational institutions. It also includes data collected via surveys and interviews that helps to shed light on underlying issues of racism and discontent in Japanese and Nigerian populations within Japan, and concludes with a description of a new approach to one of the most common intercultural communication exercises called the E.A.D. (Evaluate, Analyze, Describe. While this exercise has proved to increase cultural awareness and open the lines of communication between individuals from various cultural and lingual backgrounds, research also shows that other strategies may be necessary to achieve desired levels of communication.

  14. Introduction to the Paper Symposium (United States)

    Carpenter, D. K.


    . For this system, they argued, the criterion deltaG Schomaker and Waser (1), or zero (or almost so), as argued by Tykodi (2)? This led to concerns by Noyes about how the pressure should be defined (3) and by Wood and Battino that it is not appropriate to utilize the Gibbs function in describing the Bates process (4). The various authors not only disagreed, sometimes sharply, on these matters but eventually carried the discussion into related but somewhat more distant areas including the following: The role of the container walls, which experience a change in the differential pressure on the inside and outside surfaces (5). The question of whether it is possible to define a Gibbs function for anisotropic solids (6) and if it is, how it should be done (5,7). The use of "Global" intensive properties (in particular pressure) of the surroundings to characterize a system in which such properties may not be uniform (5). The relationship of the variance (in the sense of the phase rule) of a system to its most appropriate thermodynamic function (4). A historical issue--exactly what did J. W. Gibbs say regarding the definition of a Gibbs function for systems in which the pressure was not uniform and/or there were anisotropic solids present (5-7)? When it finally became apparent that there was to be no resolution of the disputed points it was decided to publish the papers in the present form, which allows each contributor to make his positions as forcefully and clearly as possible, along with his assessment of the deficiencies of the other papers as seen from his own perspective. Bearing in mind that although the set of papers originally had as basis the "expansion of ether into a vacuum" problem, the set of questions and the interests eventually addressed by the various authors diverged somewhat as discussion proceeded. Here we merely point out some of the main issues addressed in the four papers in order to guide the reader to a quicker path to reading them in context. Some

  15. Reading for Pleasure: The Research Paper Reconsidered. (United States)

    Kotler, Janet


    Describes a research paper assignment in which students choose a controversial news event reported by six to eight newspapers and arrive at a thesis by comparing the accounts. Notes that students become truly engaged with the assignment and that engagement shows itself strongly in the intelligence and life of the papers. (RS)

  16. Amazed by Making: How Do Teachers Describe Their PBL Experience (United States)

    Levy, Dalit; Dor, Olga


    This paper is based on data gathered in a study conducted during the 2015 school year, in a reputable Israeli high school experimenting project-based learning (PBL) as part of an innovative pedagogy for the information age. The overall research goal was to investigate the teachers' views of PBL and the ways by which these views have changed…


    Directory of Open Access Journals (Sweden)

    Lucie Vnoučková


    Full Text Available Education quality assurance is the necessity for today’s competitive environment in university education. Quality assurance standards and strategies are being used in most of universities and higher education institutions. But the perception of quality standards is being usually seen from the perspective of a university management. This study aims to analyze and present perceptions of students towards a measurement of education quality standards and to identify significant groups of students according to their preferences in education quality. Students’ questionnaires and focus groups collected the data. Two dimensional and multi-dimensional statistical methods were used to evaluate the results. The outputs show five groups of students based on their perception of the education quality. Examination of students’ interest in specific areas, subjects and courses leads to identification of factors which affect their preferences in education. The paper found five significant groups of perceived quality by students. These are Quality receptionists, Business oriented, Expert innovators, Distance learners and Arrangement oriented. Limit of the study is a narrow focus on one private university. This study may encourage other papers to develop and test further the impact of education quality on students’ preferences for measurable improvements. The paper is an extension of the conference paper presented on ERIE conference 2017.

  18. United Kingdom position paper

    International Nuclear Information System (INIS)


    In any system employing liquid sodium as a coolant, large heat transfer coefficients exist between the metal structure containing the coolant, and the coolant itself. Any rapidly varying temperatures, either space wise or time wise, in the sodium are readily transmitted to the surrounding metal structure, resulting in the generation of appreciable thermal stresses within these structures. In particular, the phenomenon of thermal stratification in the sodium coolant has the potential to induce unacceptable thermal stresses throughout the system. With respect to the present U.K. fast reactor design, a large programme of work in connection with the thermal hydraulic aspects of the plant is in hand. This programme is being undertaken as a joint effort by the National Nuclear Corporation, the United Kingdom Atomic Energy Authority, and the Central Electricity Generating Board. Work is in progress both to identify the areas of the system that will be susceptible to, and to ensure that the design is capable of successfully withstanding any thermal stratification effects. The production of stratification phenomena depends both upon the design and the operation of the reactor system. These are briefly described below. Areas where thermal stratification effects exist are then identified and the programme of work associated with each area is outlined

  19. Review papers immunosuppressive treatment

    Directory of Open Access Journals (Sweden)

    Anna Kryś


    Full Text Available Sebaceous carcinoma (sebaceous gland carcinoma – SC is a very aggressive malignant skin tumor that arises from the epithelium of sebaceous glands. Sun exposure and long-term immunosuppression, mainly in organ transplant recipients, are the most common risk factors. The tumor was first well described by Allaire in 1891. Sebaceous carcinoma is rare and accounts for less than 1% of all cutaneous malignancies and from 1% to 5.5% of all eyelid malignancies. The most common localization is the eyelids, where it derives from the Meibomian and Zeiss glands. Most cases occur in woman between 60 and 80 years of age, but the tumor can be seen at any age, even in childhood. It appears mostly as a small, slowly growing, painless and firm mass, sometimes as a small yellowish plaque or ulceration. SC has a tendency for local recurrence and distant metastases. The local recurrence rate ranges from 9 to 36% and tends to appear within the first 5 years from diagnosis. The most effective method of treatment is surgical excision (Mohs’ microsurgical excision if it is possible. The rate of metastases is about 14-25%. The sites of metastases are usually lymph nodes, liver, lungs, bones, and brain. The mortality rate is about 22% but it increases to 50% at 5 years in patients with metastatic disease.

  20. Ultrathin (Nanocellulose Paper (United States)

    Wu, Jingda; Lin, Lih Y.


    Conventional approaches to flexible optoelectronic devices typically require depositing the active materials on external substrates. This is mostly due to the weak bonding between individual molecules or nanocrystals in the active materials, which prevents sustaining a freestanding thin film. Herein we demonstrate an ultrathin freestanding ZnO quantum dot (QD) active layer with nanocellulose structuring, and its corresponding device fabrication method to achieve substrate-free flexible optoelectronic devices. The ultrathin ZnO QD-nanocellulose composite is obtained by hydrogel transfer printing and solvent-exchange processes to overcome the water capillary force which is detrimental to achieving freestanding thin films. We achieved an active nanocellulose paper with ~550 nm thickness, and >91% transparency in the visible wavelength range. The film retains the photoconductive and photoluminescent properties of ZnO QDs and is applied towards substrate-free Schottky photodetector applications. The device has an overall thickness of ~670 nm, which is the thinnest freestanding optoelectronic device to date, to the best of our knowledge, and functions as a self-powered visible-blind ultraviolet photodetector. This platform can be readily applied to other nano materials as well as other optoelectronic device applications.

  1. Classic papers in combinatorics

    CERN Document Server

    Rota, Gian-Carlo


    This volume surveys the development of combinatorics since 1930 by presenting in chronological order the fundamental results of the subject proved in over five decades of original papers by:.-T. van Aardenne-Ehrenfest.-R.L. Brooks.-N.G. de Bruijn.-G.F. Clements.-H.H. Crapo.-R.P. Dilworth.-J. Edmonds.-P.Erdös.-L.R. Ford, Jr.-D.R. Fulkerson.-D. Gale.-L. Geissinger.-I.J. Good.-R.L. Graham.-A.W. Hales.-P. Hall.-P.R. Halmos.-R.I. Jewett.-I. Kaplansky.-P.W. Kasteleyn.-G. Katona.-D.J. Kleitman.-K. Leeb.-B. Lindström.-L. Lovász.-D. Lubell.-C. St. J.A. Nash-Williams.-G. Pólya.-F.P. Ramsey.-G.C. Rota.-B.L. Rothschild.-H.J. Ryser.-C. Schensted.-M.P. Schützenberger.-R.P. Stanley.-G. Szekeres.-W.T. Tutte.-H.E. Vaughan.-H. Whitney.

  2. Use of a negative binomial distribution to describe the presence of Sphyrion laevigatum in Genypterus blacodes

    Directory of Open Access Journals (Sweden)

    Patricio Peña-Rehbein

    Full Text Available This paper describes the frequency and number of Sphyrion laevigatum in the skin of Genypterus blacodes, an important economic resource in Chile. The analysis of a spatial distribution model indicated that the parasites tended to cluster. Variations in the number of parasites per host could be described by a negative binomial distribution. The maximum number of parasites observed per host was two.

  3. A geostatistical approach for describing spatial pattern in stream networks (United States)

    Ganio, L.M.; Torgersen, C.E.; Gresswell, R.E.


    The shape and configuration of branched networks influence ecological patterns and processes. Recent investigations of network influences in riverine ecology stress the need to quantify spatial structure not only in a two-dimensional plane, but also in networks. An initial step in understanding data from stream networks is discerning non-random patterns along the network. On the other hand, data collected in the network may be spatially autocorrelated and thus not suitable for traditional statistical analyses. Here we provide a method that uses commercially available software to construct an empirical variogram to describe spatial pattern in the relative abundance of coastal cutthroat trout in headwater stream networks. We describe the mathematical and practical considerations involved in calculating a variogram using a non-Euclidean distance metric to incorporate the network pathway structure in the analysis of spatial variability, and use a non-parametric technique to ascertain if the pattern in the empirical variogram is non-random.

  4. Describing spatial pattern in stream networks: A practical approach (United States)

    Ganio, L.M.; Torgersen, C.E.; Gresswell, R.E.


    The shape and configuration of branched networks influence ecological patterns and processes. Recent investigations of network influences in riverine ecology stress the need to quantify spatial structure not only in a two-dimensional plane, but also in networks. An initial step in understanding data from stream networks is discerning non-random patterns along the network. On the other hand, data collected in the network may be spatially autocorrelated and thus not suitable for traditional statistical analyses. Here we provide a method that uses commercially available software to construct an empirical variogram to describe spatial pattern in the relative abundance of coastal cutthroat trout in headwater stream networks. We describe the mathematical and practical considerations involved in calculating a variogram using a non-Euclidean distance metric to incorporate the network pathway structure in the analysis of spatial variability, and use a non-parametric technique to ascertain if the pattern in the empirical variogram is non-random.

  5. Coming to terms about describing Golden Eagle reproduction (United States)

    Steenhof, Karen; Kochert, Michael N.; McIntyre, Carol L.; Brown, Jessi L.


    Clearly defined terms are essential for reporting and understanding research findings, and inconsistent terminology can complicate efforts to compare findings from different studies. In this article, we reiterate and clarify recommended terms for describing Golden Eagle (Aquila chrysaetos) territory occupancy and reproduction. Several authors have provided recommendations for reporting data on raptor reproduction, but our literature review showed that authors continue to use different, often ambiguous and undefined, terms. The inconsistent use of terminology by researchers has been continued and expanded by lawmakers, regulators, and managers, perpetuating confusion. We recommend that authors clearly define and reference all terminology that they use, and we caution against use of the term “active” to describe a nest or nesting territory, because it is tainted with a history of inconsistent use. We provide a glossary of recommended terms for Golden Eagles and other large, long-lived raptors.

  6. National survey describing and quantifying students with communication needs. (United States)

    Andzik, Natalie R; Schaefer, John M; Nichols, Robert T; Chung, Yun-Ching


    Research literature has yet to quantify and describe how students with complex communication needs are supported in the classroom and how special educators are being prepared to offer support. This study sought out special educators to complete a survey about their students with complex communication needs. Over 4,000 teachers representing 50 states reported on the communicative and behavioral characteristics of 15,643 students. Teachers described the training they have received and instructional approaches they used. The majority of students were reported to use speech as their primary communication mode. Over half of students utilizing alternative and augmentative communication (AAC) were reported to have non-proficient communication. Teacher training varied across respondents as well as the supports they used to support these students in the classroom. The majority of students with disabilities using AAC when communicating across the nation are not proficiently communicating. Implications and recommendations will be discussed.

  7. On new gravitational instantons describing creation of braneworlds

    CERN Document Server

    Bouhmadi-Lopez, M; Zhuk, A


    By considering five-dimensional cosmological models with a bulk filled with a pressureless scalar field or equivalently dust matter, and a negative cosmological constant, we have found a regular instantonic solution which is free from any singularity at the origin of the extra coordinate. This instanton describes the five-dimensional asymptotically anti-de Sitter wormhole, when the bulk has a topology RxS sup 4. Compactified braneworld instantons which are built up from such an instantonic solution describe either a single brane or a string of branes. Their analytical continuation to the pseudo-Riemannian metric can give rise to either four-dimensional inflating branes or solutions with the same dynamical behaviour for extra dimension and branes, in addition to multitemporal solutions. Dust braneworld models with arbitrary dimensions (D>=5) as well as other spatial topologies are also briefly discussed.

  8. Double sigmoidal models describing the growth of coffee berries

    Directory of Open Access Journals (Sweden)

    Tales Jesus Fernandes

    Full Text Available ABSTRACT: This study aimed to verify if the growth pattern of coffee berries, considering fresh mass accumulation over time, is double sigmoid and to select the most suitable nonlinear model to describe such behavior. Data used consisted of fourteen longitudinal observations of average fresh mass of coffee berries obtained in an experiment with the cultivar Obatã IAC 1669-20. The fits provided by the Logistic and Gompertz models were compared in their single and double versions. Parameters were estimated using the least squares method using the Gauss-Newton algorithm implemented in the nls function of the R software. It can be concluded that the growth pattern of the coffee fruit, in fresh mass accumulation, is double sigmoid. The double Gompertz and double Logistic models were adequate to describe such a growth curve, with a superiority of the double Logistic model.

  9. Polychaete species (Annelida) described from the Philippine and China Seas. (United States)

    Salazar-Vallejo, Sergio I; Carrera-Parra, Luis F; Muir, Alexander I; De León-González, Jesús Angel; Piotrowski, Christina; Sato, Masanori


    The South China and Philippine Seas are among the most diverse regions in the Western Pacific. Although there are several local polychaete checklists available, there is none comprising the whole of this region. Presented herein is a comprehensive list of the original names of all polychaete species described from the region. The list contains 1037 species, 345 genera and 60 families; the type locality, type depository, and information regarding synonymy are presented for each species. 

  10. Turbulent Evolution of a Plasma Described Through Classical Mechanics Only (United States)

    Escande, D. F.; Elskens, Y.


    For the first time an old dream of the XIXth century comes true: the non trivial evolution of a macroscopic many-body system is described through classical mechanics only. This is done for the relaxation of a warm electron beam in a plasma, which results in the generation of Langmuir turbulence and in the formation of a plateau in the velocity distribution function of the electrons. Our derivation starts from the hamiltonian describing the one-dimensional N-body system corresponding to the beam and plasma bulk electrons in electrostatic interaction. For such a system, the dynamics can be reduced to the resonant interaction of M Langmuir waves with N'(≪ N) beam particles. The rigorous analytical calculation of a quasilinear diffusion coefficient is performed for the chaotic motion of a particle in a quite general set of prescribed longitudinal waves with random phases and large amplitudes. This result proves to be extendable within controllable approximations to the self-consistent evolution of M ≫ 1 Langmuir waves with N' ≫ 1 beam particles. This yields the proof of the classical quasilinear equations describing the coupled evolution of the wave spectrum and of the beam velocity distribution function in the strongly nonlinear regime where their validity is the matter of a longstanding controversy.

  11. On how to define, understand and describe risk

    International Nuclear Information System (INIS)

    Aven, Terje


    The prevailing perspectives and definitions of risk, at least in the engineering community, are based on probabilities. In this paper we argue that such perspectives and definitions are too narrow. The probability component of the risk concept should be replaced by uncertainty. By jumping directly into probabilities, important uncertainty aspects could easily be overlooked or truncated. In the paper we point at several extended risk definitions, and a formal structure for the various perspectives and definitions is developed. Fundamental concepts such as second-order probabilities and uncertainties are discussed. Examples are provided showing the importance of the choice of risk perspective in a risk assessment and decision-making context. The examples cover offshore operations, security and market price risks.

  12. capital. A discussion paper

    Directory of Open Access Journals (Sweden)

    Ewa Chojnacka


    Full Text Available The purpose of this study is to confront certain propositions presented in Lesław Niemczyk’s publication Rachunkowość finansowa aktywów kompetencyjnych i kapitału intelektualnego. Nowy dział rachunkowości(Accounting for Competence Assets and Intellectual Capital. A New Area in Accounting with ideas published in other studies. The authors discuss issues concerning firm value, selected definitions of intellectual capital, as well as certain methods of intellectual capital measurement and valuation. Other problems analysed include accounting for and reporting of intellectual capital and similarities and differences between the way those issues are presented in Polish and in international studies as well as in existing legal regulations and standards.

  13. Physics in the twentieth century. A selection of papers

    International Nuclear Information System (INIS)

    Weisskopf, V.F.


    A number of papers from Victor F. Weisskopf have been collected in this book. The papers included in the first part are dealing with basic concepts in quantum mechanics. Particle-wave duality, quantum scale, and the Niels Bohr works. Papers in the second part describe the recent developments in the physics field during the 20th century: the electron theory, compound nucleus, nuclear structure, and quantum theory of elementary particles. The third part is concerned with peculiar cases: nuclear models, the Lorentz relativistic contraction, light-matter interaction, parity decay, and symmetry. In the fourth part are gathered papers on sciences in general, for which they present a sort of natural philosophy [fr

  14. Analyzing graduate student trends in written paper evaluation. (United States)

    Giddens, Jean Foret; Lobo, Marie


    Writing is valued as an essential skill in nursing education. However, the evaluation of written scholarly work is challenging. Limited nursing literature addressing issues or strategies associated with evaluation exists. The purpose of this study was to describe and evaluate differences that exist in the evaluation of a standardized written paper. The study included a sample of 47 graduate nursing students enrolled in a nursing education course. Participants were asked to grade a mock paper as part of a course assignment; their work was retained for data analysis. Wide variability in scoring and comments on the paper were noted; significantly lower scores were assigned by participants who had experience teaching in academic settings. The majority of written comments made by participants were related to grammar and American Psychological Association formatting or citation problems. Further research is needed to better understand paper evaluation practices of nursing faculty.

  15. Object technology: A white paper

    Energy Technology Data Exchange (ETDEWEB)

    Jordan, S.R.; Arrowood, L.F.; Cain, W.D.; Stephens, W.M.; Vickers, B.D.


    Object-Oriented Technology (OOT), although not a new paradigm, has recently been prominently featured in the trade press and even general business publications. Indeed, the promises of object technology are alluring: the ability to handle complex design and engineering information through the full manufacturing production life cycle or to manipulate multimedia information, and the ability to improve programmer productivity in creating and maintaining high quality software. Groups at a number of the DOE facilities have been exploring the use of object technology for engineering, business, and other applications. In this white paper, the technology is explored thoroughly and compared with previous means of developing software and storing databases of information. Several specific projects within the DOE Complex are described, and the state of the commercial marketplace is indicated.

  16. Saturation behavior: a general relationship described by a simple second-order differential equation. (United States)

    Kepner, Gordon R


    The numerous natural phenomena that exhibit saturation behavior, e.g., ligand binding and enzyme kinetics, have been approached, to date, via empirical and particular analyses. This paper presents a mechanism-free, and assumption-free, second-order differential equation, designed only to describe a typical relationship between the variables governing these phenomena. It develops a mathematical model for this relation, based solely on the analysis of the typical experimental data plot and its saturation characteristics. Its utility complements the traditional empirical approaches. For the general saturation curve, described in terms of its independent (x) and dependent (y) variables, a second-order differential equation is obtained that applies to any saturation phenomena. It shows that the driving factor for the basic saturation behavior is the probability of the interactive site being free, which is described quantitatively. Solving the equation relates the variables in terms of the two empirical constants common to all these phenomena, the initial slope of the data plot and the limiting value at saturation. A first-order differential equation for the slope emerged that led to the concept of the effective binding rate at the active site and its dependence on the calculable probability the interactive site is free. These results are illustrated using specific cases, including ligand binding and enzyme kinetics. This leads to a revised understanding of how to interpret the empirical constants, in terms of the variables pertinent to the phenomenon under study. The second-order differential equation revealed the basic underlying relations that describe these saturation phenomena, and the basic mathematical properties of the standard experimental data plot. It was shown how to integrate this differential equation, and define the common basic properties of these phenomena. The results regarding the importance of the slope and the new perspectives on the empirical

  17. Effect of Display Color on Pilot Performance and Describing Functions (United States)

    Chase, Wendell D.


    A study has been conducted with the full-spectrum, calligraphic, computer-generated display system to determine the effect of chromatic content of the visual display upon pilot performance during the landing approach maneuver. This study utilizes a new digital chromatic display system, which has previously been shown to improve the perceived fidelity of out-the-window display scenes, and presents the results of an experiment designed to determine the effects of display color content by the measurement of both vertical approach performance and pilot-describing functions. This method was selected to more fully explore the effects of visual color cues used by the pilot. Two types of landing approaches were made: dynamic and frozen range, with either a landing approach scene or a perspective array display. The landing approach scene was presented with either red runway lights and blue taxiway lights or with the colors reversed, and the perspective array with red lights, blue lights, or red and blue lights combined. The vertical performance measures obtained in this experiment indicated that the pilots performed best with the blue and red/blue displays. and worst with the red displays. The describing-function system analysis showed more variation with the red displays. The crossover frequencies were lowest with the red displays and highest with the combined red/blue displays, which provided the best overall tracking, performance. Describing-function performance measures, vertical performance measures, and pilot opinion support the hypothesis that specific colors in displays can influence the pilots' control characteristics during the final approach.

  18. [Health consequences of smoking electronic cigarettes are poorly described]. (United States)

    Tøttenborg, Sandra Søgaard; Holm, Astrid Ledgaard; Wibholm, Niels Christoffer; Lange, Peter


    Despite increasing popularity, health consequences of vaping (smoking electronic cigarettes, e-cigarettes) are poorly described. Few studies suggest that vaping has less deleterious effects on lung function than smoking conventional cigarettes. One large study found that e-cigarettes were as efficient as nicotine patches in smoking cessation. The long-term consequences of vaping are however unknown and while some experts are open towards e-cigarettes as a safer way of satisfying nicotine addiction, others worry that vaping in addition to presenting a health hazard may lead to an increased number of smokers of conventional cigarettes.

  19. Describing Quadratic Cremer Point Polynomials by Parabolic Perturbations

    DEFF Research Database (Denmark)

    Sørensen, Dan Erik Krarup


    We describe two infinite order parabolic perturbation proceduresyielding quadratic polynomials having a Cremer fixed point. The main ideais to obtain the polynomial as the limit of repeated parabolic perturbations.The basic tool at each step is to control the behaviour of certain externalrays.Polynomials...... the existence of polynomials having an explicitlygiven external ray accumulating both at the Cremer point and at its non-periodicpreimage. We think of the Julia set as containing a "topologists double comb".In the one-sided case we prove a weaker result: the existence of polynomials havingan explicitly given...

  20. Models for describing the thermal characteristics of building components

    DEFF Research Database (Denmark)

    Jimenez, M.J.; Madsen, Henrik


    Outdoor testing of buildings and building components under real weather conditions provides useful information about their dynamic performance. Such knowledge is needed to properly characterize the heat transfer dynamics and provides useful information for implementing energy saving strategies...... of these approaches may therefore be very useful for selecting a suitable approach for each particular case. This paper presents an overview of models that can be applied for modelling the thermal characteristics of buildings and building components using data from outdoor testing. The choice of approach depends...

  1. Workplace culture in psychiatric nursing described by nurses. (United States)

    Kurjenluoma, K; Rantanen, A; McCormack, B; Slater, P; Hahtela, N; Suominen, T


    This study looks to describe the workplace culture from the viewpoints of stress, job satisfaction and practice environment. Data were collected from nurses (n = 109) using a web-based survey, The Person-Centred Nursing Index, from two purposefully selected hospital districts in Finland. Data were statistically analysed. Nurses described their workplace culture in slightly positive terms. Nurses only occasionally experienced stress (mean = 2.56, SD = 0.55) and were fairly satisfied with their job (mean = 4.75, SD = 0.66) and their practice environment (mean = 4.42, SD = 0.81). Demographic variables such as the nurses' age, length of time in nursing, time at their present hospital, working shifts and their use of patient restriction were more frequently associated with their perceived workplace culture. Older nurses and those with a longer work history in the nursing profession tended to be more satisfied with their workplace culture in psychiatric nursing. Young and/or newly graduated nurses felt more negatively on their workplace culture; this issue should be recognised and addressed with appropriate support and mentoring. Nurses who used restrictive measures were more often less satisfied with their workplace culture. Continuous efforts are needed to reduce the use of coercive measures, which challenge also the managers to support nursing practice to be more person-centred. © 2017 Nordic College of Caring Science.

  2. Experimental investigation of statistical models describing distribution of counts

    International Nuclear Information System (INIS)

    Salma, I.; Zemplen-Papp, E.


    The binomial, Poisson and modified Poisson models which are used for describing the statistical nature of the distribution of counts are compared theoretically, and conclusions for application are considered. The validity of the Poisson and the modified Poisson statistical distribution for observing k events in a short time interval is investigated experimentally for various measuring times. The experiments to measure the influence of the significant radioactive decay were performed with 89 Y m (T 1/2 =16.06 s), using a multichannel analyser (4096 channels) in the multiscaling mode. According to the results, Poisson statistics describe the counting experiment for short measuring times (up to T=0.5T 1/2 ) and its application is recommended. However, analysis of the data demonstrated, with confidence, that for long measurements (T≥T 1/2 ) Poisson distribution is not valid and the modified Poisson function is preferable. The practical implications in calculating uncertainties and in optimizing the measuring time are discussed. Differences between the standard deviations evaluated on the basis of the Poisson and binomial models are especially significant for experiments with long measuring time (T/T 1/2 ≥2) and/or large detection efficiency (ε>0.30). Optimization of the measuring time for paired observations yields the same solution for either the binomial or the Poisson distribution. (orig.)

  3. Colour in flux: describing and printing colour in art (United States)

    Parraman, Carinna


    This presentation will describe artists, practitioners and scientists, who were interested in developing a deeper psychological, emotional and practical understanding of the human visual system who were working with wavelength, paint and other materials. From a selection of prints at The Prints and Drawings Department at Tate London, the presentation will refer to artists who were motivated by issues relating to how colour pigment was mixed and printed, to interrogate and explain colour perception and colour science, and in art, how artists have used colour to challenge the viewer and how a viewer might describe their experience of colour. The title Colour in Flux refers, not only to the perceptual effect of the juxtaposition of one colour pigment with another, but also to the changes and challenges for the print industry. In the light of screenprinted examples from the 60s and 70s, the presentation will discuss 21 st century ideas on colour and how these notions have informed the Centre for Fine Print Research's (CFPR) practical research in colour printing. The latter part of this presentation will discuss the implications for the need to change methods in mixing inks that moves away from existing colour spaces, from non intuitive colour mixing to bespoke ink sets, colour mixing approaches and colour mixing methods that are not reliant on RGB or CMYK.

  4. A new eigenfunction spatial analysis describing population genetic structure. (United States)

    Diniz-Filho, José Alexandre Felizola; Diniz, João Vitor Barnez P L; Rangel, Thiago Fernando; Soares, Thannya Nascimento; Telles, Mariana Pires de Campos; Collevatti, Rosane Garcia; Bini, Luis Mauricio


    Several methods of spatial analyses have been proposed to infer the relative importance of evolutionary processes on genetic population structure. Here we show how a new eigenfunction spatial analysis can be used to model spatial patterns in genetic data. Considering a sample of n local populations, the method starts by modeling the response variable (allele frequencies or phenotypic variation) against the eigenvectors sequentially extracted from a geographic distance matrix (n × n). The relationship between the coefficient of determination (R(2)) of the models and the cumulative eigenvalues, which we named the spatial signal-representation (SSR) curve, can be more efficient than Moran's I correlograms in describing different patterns. The SSR curve was also applied to simulated data (under distinct scenarios of population differentiation) and to analyze spatial patterns in alleles from microsatellite data for 25 local populations of Dipteryx alata, a tree species endemic to the Brazilian Cerrado. The SSR curves are consistent with previous phylogeographical patterns of the species, revealing combined effects of isolation-by-distance and range expansion. Our analyses demonstrate that the SSR curve is a useful exploratory tool for describing spatial patterns of genetic variability and for selecting spatial eigenvectors for models aiming to explain spatial responses to environmental variables and landscape features.

  5. Matrix formalism to describe functional states of transcriptional regulatory systems.

    Directory of Open Access Journals (Sweden)

    Erwin P Gianchandani


    Full Text Available Complex regulatory networks control the transcription state of a genome. These transcriptional regulatory networks (TRNs have been mathematically described using a Boolean formalism, in which the state of a gene is represented as either transcribed or not transcribed in response to regulatory signals. The Boolean formalism results in a series of regulatory rules for the individual genes of a TRN that in turn can be used to link environmental cues to the transcription state of a genome, thereby forming a complete transcriptional regulatory system (TRS. Herein, we develop a formalism that represents such a set of regulatory rules in a matrix form. Matrix formalism allows for the systemic characterization of the properties of a TRS and facilitates the computation of the transcriptional state of the genome under any given set of environmental conditions. Additionally, it provides a means to incorporate mechanistic detail of a TRS as it becomes available. In this study, the regulatory network matrix, R, for a prototypic TRS is characterized and the fundamental subspaces of this matrix are described. We illustrate how the matrix representation of a TRS coupled with its environment (R* allows for a sampling of all possible expression states of a given network, and furthermore, how the fundamental subspaces of the matrix provide a way to study key TRS features and may assist in experimental design.

  6. Motion in a stochastic layer described by symbolic dynamics

    Energy Technology Data Exchange (ETDEWEB)

    Misguich, J.H.; Reuss, J.D. [Association Euratom-CEA, Centre d`Etudes Nucleaires de Cadarache, 13 - Saint-Paul-lez-Durance (France). Dept. de Recherches sur la Fusion Controlee; Elskens, Y. [Universite de Provence, 13 - Marseille (France); Balescu, R. [Association Euratom, Brussels (Belgium)


    The motion in the stochastic layer surrounding an island can be studied by using the standard map: this problem is of direct relevance to the diffusion of magnetic field lines in a tokamak. In a previous work it was shown that this process can be adequately modelled by a continuous time random walk (CTRW) describing transitions of the running point between three basins representing, respectively, trapped motion around the island, and passing motion above or below the island. The sticking property of the island deeply modifies the nature of the transport process, leading to sub-diffusive behavior. In the present work it is shown that the motion can be analyzed in terms of a symbolic dynamics which leads to the possibility of an automatic measurement of the data necessary for the construction of the CTRW. The logical features of the procedure are described, and the method is applied to an analysis of long time series, thus completing the results of the previous work. (author) 10 refs.

  7. Position paper on standardization

    International Nuclear Information System (INIS)


    The ''NPOC Strategic Plan for Building New Nuclear Plants'' creates a framework within which new standardized nuclear plants may be built. The Strategic Plan is an expression of the nuclear energy industry's serious intent to create the necessary conditions for new plant construction and operation. One of the key elements of the Strategic Plan is a comprehensive industry commitment to standardization: through design certification, combined license, first-of-a-kind engineering, construction, operation and maintenance of nuclear power plants. The NPOC plan proposes four stages of standardization in advanced light water reactors (ALWRs). The first stage is established by the ALWR Utility Requirements Document which specifies owner/operator requirements at a functional level covering all elements of plant design and construction, and many aspects of operations and maintenance. The second stage of standardization is that achieved in the NRC design certification. This certification level includes requirements, design criteria and bases, functional descriptions and performance requirements for systems to assure plant safety. The third stage of standardization, commercial standardization, carries the design to a level of completion beyond that required for design certification to enable the industry to achieve potential increases in efficiency and economy. The final stage of standardization is enhanced standardization beyond design. A standardized approach is being developed in construction practices, operating, maintenance training, and procurement practices. This comprehensive standardization program enables the NRC to proceed with design certification with the confidence that standardization beyond the regulations will be achieved. This confidence should answer the question of design detail required for design certification, and demonstrate that the NRC should require no further regulatory review beyond that required by 10 CFR Part 52

  8. Design and analysis of sustainable paper bicycle (United States)

    Roni Sahroni, Taufik; Nasution, Januar


    This paper presents the design of sustainable paper bicycle which describes the stage by stage in the production of paper bicycle. The objective of this project is to design a sustainable paper bicycles to be used for children under five years old. The design analysis emphasizes in screening method to ensure the design fulfil the safety purposes. The evaluation concept is presented in designing a sustainable paper bicycle to determine highest rating. Project methodology is proposed for developing a sustainable paper bicycle. Design analysis of pedal, front and rear wheel, seat, and handle were presented using AutoCAD software. The design optimization was performed to fulfil the safety factors by modifying the material size and dimension. Based on the design analysis results, it is found that the optimization results met the factor safety. As a result, a sustainable paper bicycle was proposed for children under five years old.

  9. Partially ionized plasmas including the third symposium on uranium plasmas

    Energy Technology Data Exchange (ETDEWEB)

    Krishnan, M. [ed.


    Separate abstracts are included for 28 papers on electrically generated plasmas, fission generated plasmas, nuclear pumped lasers, gaseous fuel reactor research, and applications. Five papers have been previously abstracted and included in ERA.

  10. Using the Language of Sets to Describe Nested Systems in Emergy Evaluations (United States)

    The language of set theory has been recently used to describe the emergy evaluation of a process. In this paper this mathematical language is used as a guide to evaluate the emergy of nested systems. We analyze a territorial system on multiple scales as an example of hierarchical...

  11. Combining the CIDOC CRM and MPEG-7 to Describe Multimedia in Museums. (United States)

    Hunter, Jane

    This paper describes a proposal for an interoperable metadata model, based on international standards, that has been designed to enable the description, exchange and sharing of multimedia resources both within and between cultural institutions. Domain-specific ontologies have been developed by two different ISO Working Groups to standardize the…

  12. Transparencies used in describing the IMS regime and the current status of its establishment

    International Nuclear Information System (INIS)

    Basham, P.


    This presentation describes the CTBT International data center for near real time collection, processing, analysis and dissemination of data to support Test Ban Monitoring in multiple environments. The scope of the center activity covers the following: seismic monitoring, hydro acoustic monitoring, infrasound monitoring, radionuclide monitoring and related network. All the monitoring systems are shown in detail in this paper

  13. Query Processing for Probabilistic State Diagrams Describing Multiple Robot Navigation in an Indoor Environment

    Energy Technology Data Exchange (ETDEWEB)

    Czejdo, Bogdan [ORNL; Bhattacharya, Sambit [North Carolina Fayetteville State University; Ferragut, Erik M [ORNL


    This paper describes the syntax and semantics of multi-level state diagrams to support probabilistic behavior of cooperating robots. The techniques are presented to analyze these diagrams by querying combined robots behaviors. It is shown how to use state abstraction and transition abstraction to create, verify and process large probabilistic state diagrams.

  14. Academic Primer Series: Key Papers About Peer Review. (United States)

    Yarris, Lalena M; Gottlieb, Michael; Scott, Kevin; Sampson, Christopher; Rose, Emily; Chan, Teresa M; Ilgen, Jonathan


    Peer review, a cornerstone of academia, promotes rigor and relevance in scientific publishing. As educators are encouraged to adopt a more scholarly approach to medical education, peer review is becoming increasingly important. Junior educators both receive the reviews of their peers, and are also asked to participate as reviewers themselves. As such, it is imperative for junior clinician educators to be well-versed in the art of peer reviewing their colleagues' work. In this article, our goal was to identify and summarize key papers that may be helpful for faculty members interested in learning more about the peer-review process and how to improve their reviewing skills. The online discussions of the 2016-17 Academic Life in Emergency Medicine (ALiEM) Faculty Incubator program included a robust discussion about peer review, which highlighted a number of papers on that topic. We sought to augment this list with further suggestions by guest experts and by an open call on Twitter for other important papers. Via this process, we created a list of 24 total papers on the topic of peer review. After gathering these papers, our authorship group engaged in a consensus-building process incorporating Delphi methods to identify the papers that best described peer review, and also highlighted important tips for new reviewers. We found and reviewed 24 papers. In our results section, we present our authorship group's top five most highly rated papers on the topic of peer review. We also summarize these papers with respect to their relevance to junior faculty members and to faculty developers. We present five key papers on peer review that can be used for faculty development for novice writers and reviewers. These papers represent a mix of foundational and explanatory papers that may provide some basis from which junior faculty members might build upon as they both undergo the peer-review process and act as reviewers in turn.

  15. Describing the impact of health research: a Research Impact Framework

    Directory of Open Access Journals (Sweden)

    Pleasant Andrew


    Full Text Available Abstract Background Researchers are increasingly required to describe the impact of their work, e.g. in grant proposals, project reports, press releases and research assessment exercises. Specialised impact assessment studies can be difficult to replicate and may require resources and skills not available to individual researchers. Researchers are often hard-pressed to identify and describe research impacts and ad hoc accounts do not facilitate comparison across time or projects. Methods The Research Impact Framework was developed by identifying potential areas of health research impact from the research impact assessment literature and based on research assessment criteria, for example, as set out by the UK Research Assessment Exercise panels. A prototype of the framework was used to guide an analysis of the impact of selected research projects at the London School of Hygiene and Tropical Medicine. Additional areas of impact were identified in the process and researchers also provided feedback on which descriptive categories they thought were useful and valid vis-à-vis the nature and impact of their work. Results We identified four broad areas of impact: I. Research-related impacts; II. Policy impacts; III. Service impacts: health and intersectoral and IV. Societal impacts. Within each of these areas, further descriptive categories were identified. For example, the nature of research impact on policy can be described using the following categorisation, put forward by Weiss: Instrumental use where research findings drive policy-making; Mobilisation of support where research provides support for policy proposals; Conceptual use where research influences the concepts and language of policy deliberations and Redefining/wider influence where research leads to rethinking and changing established practices and beliefs. Conclusion Researchers, while initially sceptical, found that the Research Impact Framework provided prompts and descriptive

  16. Describing the impact of health research: a Research Impact Framework. (United States)

    Kuruvilla, Shyama; Mays, Nicholas; Pleasant, Andrew; Walt, Gill


    Researchers are increasingly required to describe the impact of their work, e.g. in grant proposals, project reports, press releases and research assessment exercises. Specialised impact assessment studies can be difficult to replicate and may require resources and skills not available to individual researchers. Researchers are often hard-pressed to identify and describe research impacts and ad hoc accounts do not facilitate comparison across time or projects. The Research Impact Framework was developed by identifying potential areas of health research impact from the research impact assessment literature and based on research assessment criteria, for example, as set out by the UK Research Assessment Exercise panels. A prototype of the framework was used to guide an analysis of the impact of selected research projects at the London School of Hygiene and Tropical Medicine. Additional areas of impact were identified in the process and researchers also provided feedback on which descriptive categories they thought were useful and valid vis-à-vis the nature and impact of their work. We identified four broad areas of impact: I. Research-related impacts; II. Policy impacts; III. Service impacts: health and intersectoral and IV. Societal impacts. Within each of these areas, further descriptive categories were identified. For example, the nature of research impact on policy can be described using the following categorisation, put forward by Weiss: Instrumental use where research findings drive policy-making; Mobilisation of support where research provides support for policy proposals; Conceptual use where research influences the concepts and language of policy deliberations and Redefining/wider influence where research leads to rethinking and changing established practices and beliefs. Researchers, while initially sceptical, found that the Research Impact Framework provided prompts and descriptive categories that helped them systematically identify a range of specific and

  17. Principal spectra describing magnetooptic permittivity tensor in cubic crystals

    Energy Technology Data Exchange (ETDEWEB)

    Hamrlová, Jana [Nanotechnology Centre, VSB – Technical University of Ostrava, listopadu 15, Ostrava, 708 33 Czech Republic (Czech Republic); IT4Innovations Centre, VSB – Technical University of Ostrava, listopadu 15, Ostrava, 708 33 Czech Republic (Czech Republic); Legut, Dominik [IT4Innovations Centre, VSB – Technical University of Ostrava, listopadu 15, Ostrava, 708 33 Czech Republic (Czech Republic); Veis, Martin [Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, Prague, 121 16 Czech Republic (Czech Republic); Pištora, Jaromír [Nanotechnology Centre, VSB – Technical University of Ostrava, listopadu 15, Ostrava, 708 33 Czech Republic (Czech Republic); Hamrle, Jaroslav, E-mail: [IT4Innovations Centre, VSB – Technical University of Ostrava, listopadu 15, Ostrava, 708 33 Czech Republic (Czech Republic); Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, Prague, 121 16 Czech Republic (Czech Republic); Department of Physics, VSB – Technical University of Ostrava, 17. listopadu 15, Ostrava, 708 33 Czech Republic (Czech Republic)


    We provide unified phenomenological description of magnetooptic effects being linear and quadratic in magnetization. The description is based on few principal spectra, describing elements of permittivity tensor up to the second order in magnetization. Each permittivity tensor element for any magnetization direction and any sample surface orientation is simply determined by weighted summation of the principal spectra, where weights are given by crystallographic and magnetization orientations. The number of principal spectra depends on the symmetry of the crystal. In cubic crystals owning point symmetry we need only four principal spectra. Here, the principal spectra are expressed by ab initio calculations for bcc Fe, fcc Co and fcc Ni in optical range as well as in hard and soft x-ray energy range, i.e. at the 2p- and 3p-edges. We also express principal spectra analytically using modified Kubo formula.

  18. Elements that describe a dictatorship in Latin America

    Directory of Open Access Journals (Sweden)

    José Fernando Valencia Grajales


    Full Text Available The dictatorships in Latin America have had a special development, because they have manifested themselves in diverse forms. These have done so from the traditional form to the semidemocratic forms of maintaining in the government to personages that absorb and they are perpetuated in the power and that in spite of having the support of its electors, these really stay there for reasons such as the Fear or imminence, the submission or incapacity of the other powers and above all by the systematic elimination of real political contenders, to which is added the ignorance of the dictator meaning, is for that reason that the present one tried to give a definition of dictatorship, will describe Its elements, will make a tour of Latin America with respect to its dictators and finally try some conclusions.

  19. Construction of Virtual Psychology Laboratory Describing Exploratory Experimental Behavior (United States)

    Nakaike, Ryuichi; Miwa, Kazuhisa

    In the present study, we show a simulated experiment environment, VPL(Virtual Psychology Laboratory), for visualizing user's exploratory experimental behavior, and present two main modules of the environment: (1) a cognitive simulator and (2) a system for automatically describing experimenter's behavior based on EBS (Exploratory Behavior Schema) proposed by the author. Users use this environment as an experimental psychologist who investigates human collaborative discovery. They experience many trials of conducting experiments using the simulated environment, and analyze by themselves their experimental processes based on the description of their behavior by EBS. It is expected that learners can notice their errors of experimental planning and refine various types of knowledge related to the experimental skills by repeating the experimental activities in this environment.

  20. Using Persistent Homology to Describe Rayleigh-Bénard Convection (United States)

    Tithof, Jeffrey; Suri, Balachandra; Xu, Mu; Kramar, Miroslav; Levanger, Rachel; Mischaikow, Konstantin; Paul, Mark; Schatz, Michael


    Complex spatial patterns that exhibit aperiodic dynamics commonly arise in a wide variety of systems in nature and technology. Describing, understanding, and predicting the behavior of such patterns is an open problem. We explore the use of persistent homology (a branch of algebraic topology) to characterize spatiotemporal dynamics in a canonical fluid mechanics problem, Rayleigh Bénard convection. Persistent homology provides a powerful mathematical formalism in which the topological characteristics of a pattern (e.g. the midplane temperature field) are encoded in a so-called persistence diagram. By applying a metric to measure the pairwise distances across multiple persistence diagrams, we can quantify the similarities between different states in a time series. Our results show that persistent homology yields new physical insights into the complex dynamics of large spatially extended systems that are driven far-from-equilibrium. This work is supported under NSF grant DMS-1125302.

  1. Palanquin or Filanjana: Digitising and describing a collection of ...

    African Journals Online (AJOL)

    The article deals with the digitization of a collection of stereographic glass slides, provenance unknown, and the description of the slides using the few clues available. From the handful of slides that are dated it would seem that the date range is circa 1907 to 1912. Subjects include both the French colonial troops as well as ...

  2. Chaos and Intermittency in the DNLS Equation Describing the Parallel Alfvén Wave Propagation

    Directory of Open Access Journals (Sweden)

    Gustavo Krause


    Full Text Available When the Hall effect is included in the magnetohydrodynamics equations (Hall-MHD model the wave propagation modes become coupled, but for propagation parallel to the ambient magnetic field the Alfvén mode decouples from the magnetosonic ones, resulting in circularly polarized waves that are described by the derivative nonlinear Schrödinger (DNLS equation. In this paper, the DNLS equation is numerically solved using spectral methods for the spatial derivatives and a fourth order Runge-Kutta scheme for time integration. Firstly, the nondiffusive DNLS equation is considered to test the validity of the method by verifying the analytical condition of modulational stability. Later, diffusive and excitatory effects are incorporated to compare the numerical results with those obtained by a three-wave truncation model. The results show that different types of attractors can exist depending on the diffusion level: for relatively large damping, there are fixed points for which the truncation model is a good approximation; for low damping, chaotic solutions appear and the three-wave truncation model fails due to the emergence of new nonnegligible modes.

  3. Describing Long-Term Electricity Demand Scenarios in the Telecommunications Industry: A Case Study of Japan

    Directory of Open Access Journals (Sweden)

    Yusuke Kishita


    Full Text Available Due to the rapid expansion of information and communication technology (ICT usage, the telecommunications industry is faced with a challenge to promote green ICT toward achieving a low-carbon society. One critical obstacle in planning long-term strategies for green ICT is the uncertainty of various external factors, such as consumers’ lifestyle and technological advancement. To tackle this issue, this paper employs a scenario planning method to analyze electricity consumption in the telecommunications industry, where both changes in various external factors and energy-saving measures are assumed. We propose a model to estimate future electricity consumption of the telecommunications industry using a statistical approach. In a case study, we describe four scenarios that differ in the diffusion of ICT and the technological advancement of ICT equipment in order to analyze the electricity consumption in Japan’s telecommunications industry to 2030. The results reveal that the electricity consumption in 2030 becomes 0.7–1.6-times larger than the 2012 level (10.7 TWh/year. It is also shown that the most effective measures to reduce the electricity consumption include improving the energy efficiency of IP (Internet Protocol communication equipment and mobile communication equipment.

  4. Assessment of suitability of some chosen functions for describing of sorption isotherms in building materials (United States)

    Stolarska, Agata; Garbalińska, Halina


    This paper presents results of tests and studies conducted on six common building materials, used for constructing and finishing of external walls. These included: ceramic brick, silicate brick, autoclaved aerated concrete, cement mortar, cement-lime mortar and cement mortar modified with polypropylene fibers. Each of these materials is distinguished by the other structure of porousness, affecting both the course of sorption processes and the isotherms obtained. At first, measurements of moisture sorption kinetics at temperatures of 5, 20 and 35 °C were performed, each time at six levels of relative humidity. Then, when the sorption processes expired, equilibrium moisture sorption values were determined for the materials in 18 individual temperature and humidity conditions. The experimental data were used to determine the sorption isotherm courses for each material at the three temperatures. Then, theoretical analysis was performed in order to determine, which of the models available in the literature described the sorption isotherms of the concerned building materials the best. For each material and each of the three temperature values, twenty-four equations were tested. In each case, those of them were identified which ensured the best matching between the theoretical courses and the experimental data. The obtained results indicate that the Chen's model proved to be the most versatile. It ensured a detailed description of the sorption isotherms for each material and temperature tested.

  5. Exponet taper-shape models to describe tree trunks

    Directory of Open Access Journals (Sweden)

    Valdir Carlos Lima de Andrade


    Full Text Available This study evaluated exponent taper-shape models and other types applied in Brazil. Data from 270 sample trees scaled-hybrid Eucalyptus urophylla and Eucalyptus grandis were used as a studying case with 18 taper types models: simple (2, biomathematics (4, segmented (2 and exponent-form (10. It was adopted the analysis of the residual distribution and statistics: multiple linear correlation, residual standard error, percentage of no significant parcels in a completely randomized split plot and average error Dunnett, both at the level of 5% significance level. It was concluded that models of taper-shape exponents, in general, are superior to other types, the segmented model of Clark et al. is superior to Max and Burkhart biomathematics and the model developed in this paper, is better than the other biomathematics evaluated.

  6. Middle School Teachers' Strategies for Including Overweight Students in Skill and Fitness Instruction (United States)

    Rukavina, Paul B.; Doolittle, Sarah; Li, Weidong; Manson, Mara; Beale, Angela


    As part of a larger study, this paper describes teachers' perspectives and strategies on including overweight and obese students (OWS) in instruction related to motor skill/game play and fitness development in physical education. Using the Social Ecological Constraints framework, a qualitative multicase study was conducted using multiple in-depth…

  7. Combining prior knowledge with data driven modeling of a batch distillation column including start-up

    NARCIS (Netherlands)

    van Lith, PF; Betlem, BHL; Roffel, B


    This paper presents the development of a simple model which describes the product quality and production over time of an experimental batch distillation column, including start-up. The model structure is based on a simple physical framework, which is augmented with fuzzy logic. This provides a way

  8. Can Single-Reference Coupled Cluster Theory Describe Static Correlation? (United States)

    Bulik, Ireneusz W; Henderson, Thomas M; Scuseria, Gustavo E


    While restricted single-reference coupled cluster theory truncated to singles and doubles (CCSD) provides very accurate results for weakly correlated systems, it usually fails in the presence of static or strong correlation. This failure is generally attributed to the qualitative breakdown of the reference, and can accordingly be corrected by using a multideterminant reference, including higher-body cluster operators in the ansatz, or allowing symmetry breaking in the reference. None of these solutions are ideal; multireference coupled cluster is not black box, including higher-body cluster operators is computationally demanding, and allowing symmetry breaking leads to the loss of good quantum numbers. It has long been recognized that quasidegeneracies can instead be treated by modifying the coupled cluster ansatz. The recently introduced pair coupled cluster doubles (pCCD) approach is one such example which avoids catastrophic failures and accurately models strong correlations in a symmetry-adapted framework. Here, we generalize pCCD to a singlet-paired coupled cluster model (CCD0) intermediate between coupled cluster doubles and pCCD, yielding a method that possesses the invariances of the former and much of the stability of the latter. Moreover, CCD0 retains the full structure of coupled cluster theory, including a fermionic wave function, antisymmetric cluster amplitudes, and well-defined response equations and density matrices.

  9. Tubular adenoma of the urinary tract: a newly described entity. (United States)

    Kao, Chia-Sui; Epstein, Jonathan I


    Tubular adenomas in the urinary tract with the same appearance as those in the gastrointestinal tract have not yet been described in the literature. We herein report 4 cases of tubular adenomas in the urinary tract encountered within our consult practice. This lesion was defined by the presence of a collection of small round tubular glands with intestinal-type epithelium showing moderate dysplasia, identical to the histology of tubular adenomas in the intestinal tract. Patients ranged in age from 37 to 63 years (mean, 45 years), with 3 of the 4 being male (male-to-female ratio, 3:1). The locations were urinary bladder, prostatic urethra and ureter with hematuria, polyps, and obstructive mass as their presentations, respectively. One lesion was large measuring 1.4 cm associated with pseudoinvasion as well as invasive adenocarcinoma. Immunohistochemically, the tubular adenomas stained positive for CDX2 and CK20, while negative for GATA3 and CK7. One case showed positive nuclear β-catenin staining. Tubular adenoma of the urinary tract is a rare lesion, and recognition of this entity will encourage further reports and help to better understand the relation of tubular adenoma to concurrent and subsequent urinary tract malignancies. Copyright © 2013 Elsevier Inc. All rights reserved.

  10. Entropic-Skins Geometry to Describe Wall Turbulence Intermittency

    Directory of Open Access Journals (Sweden)

    Diogo Queiros-Conde


    Full Text Available In order to describe the phenomenon of intermittency in wall turbulence and, more particularly, the behaviour of moments  and and intermittency exponents ζP with the order p and distance to the wall, we developed a new geometrical framework called “entropic-skins geometry” based on the notion of scale-entropy which is here applied to an experimental database of boundary layer flows. Each moment has its own spatial multi-scale support Ωp (“skin”. The model assumes the existence of a hierarchy of multi-scale sets Ωp ranged from the “bulk” to the “crest”. The crest noted characterizes the geometrical support where the most intermittent (the highest fluctuations in energy dissipation occur; the bulk is the geometrical support for the whole range of fluctuations. The model assumes then the existence of a dynamical flux through the hierarchy of skins. The specific case where skins display a fractal structure is investigated. Bulk fractal dimension  and crest dimension  are linked by a scale-entropy flux defining a reversibility efficiency  (d is the embedding dimension. The model, initially developed for homogeneous and isotropic turbulent flows, is applied here to wall bounded turbulence where intermittency exponents are measured by extended self-similarity. We obtained for intermittency exponents the analytical expression with γ ≈ 0.36 in agreement with experimental results.

  11. Inference of random walk models to describe leukocyte migration (United States)

    Jones, Phoebe J. M.; Sim, Aaron; Taylor, Harriet B.; Bugeon, Laurence; Dallman, Magaret J.; Pereira, Bernard; Stumpf, Michael P. H.; Liepe, Juliane


    While the majority of cells in an organism are static and remain relatively immobile in their tissue, migrating cells occur commonly during developmental processes and are crucial for a functioning immune response. The mode of migration has been described in terms of various types of random walks. To understand the details of the migratory behaviour we rely on mathematical models and their calibration to experimental data. Here we propose an approximate Bayesian inference scheme to calibrate a class of random walk models characterized by a specific, parametric particle re-orientation mechanism to observed trajectory data. We elaborate the concept of transition matrices (TMs) to detect random walk patterns and determine a statistic to quantify these TM to make them applicable for inference schemes. We apply the developed pipeline to in vivo trajectory data of macrophages and neutrophils, extracted from zebrafish that had undergone tail transection. We find that macrophage and neutrophils exhibit very distinct biased persistent random walk patterns, where the strengths of the persistence and bias are spatio-temporally regulated. Furthermore, the movement of macrophages is far less persistent than that of neutrophils in response to wounding.

  12. Describing the Breakbone Fever: IDODEN, an Ontology for Dengue Fever (United States)

    Mitraka, Elvira; Topalis, Pantelis; Dritsou, Vicky; Dialynas, Emmanuel; Louis, Christos


    Background Ontologies represent powerful tools in information technology because they enhance interoperability and facilitate, among other things, the construction of optimized search engines. To address the need to expand the toolbox available for the control and prevention of vector-borne diseases we embarked on the construction of specific ontologies. We present here IDODEN, an ontology that describes dengue fever, one of the globally most important diseases that are transmitted by mosquitoes. Methodology/Principal Findings We constructed IDODEN using open source software, and modeled it on IDOMAL, the malaria ontology developed previously. IDODEN covers all aspects of dengue fever, such as disease biology, epidemiology and clinical features. Moreover, it covers all facets of dengue entomology. IDODEN, which is freely available, can now be used for the annotation of dengue-related data and, in addition to its use for modeling, it can be utilized for the construction of other dedicated IT tools such as decision support systems. Conclusions/Significance The availability of the dengue ontology will enable databases hosting dengue-associated data and decision-support systems for that disease to perform most efficiently and to link their own data to those stored in other independent repositories, in an architecture- and software-independent manner. PMID:25646954

  13. Formal verification of digital circuits described in VHDL (United States)

    Salem, Ashraf Mohammed El-Farghly


    The formal verification of digital circuits described in VHSIC (very high speed integrated circuit) hardware description language (VHDL) is presented. VHDL is made processable by proof tools. A subset, called P-VHDL, dedicated to the description of combinatorial and synchronous sequential circuits is defined. The semantics of this subset is much simpler than the complete VHDL. The delta delay is replaced by a serialization function, and the time scale is chosen equal to the clock period. The use of the finite state machine as a formal model for the subset became possible. The finite state machine semantics is shown to represent the P-VHDL semantics. Based on this formal model, a proof oriented compiler for P-VHDL is written. A complete denotational semantic for P-VHDL is defined. Three different domains for the three values holders in the language are proposed: the variables, the signals, and the registers. Formal semantics for the VHDL timing constructs are given. The equivalence between these semantics and the VHDL informal operational semantics is proven. It is shown that semantics can form a basis for building a formal timing verifier.

  14. The complexity of organizational change: describing communication during organizational turbulence. (United States)

    Salem, Philip


    Organizational researchers and practitioners have been interested in organizational change for some time. Historically, they have directed most of their efforts at improving the efficiency of planned top-down change. These efforts were strategic attempts at altering parameters leading to transformational change. Most efforts failed to meet their intended purposes. Transformational organizational change has not been likely. The legitimate systems have been robust. There has been little systematic investigation of the communication occurring during these efforts. The purpose of this essay is to describe results of a mixed methods research project answering two research questions. (a) How do organizational members communicate during a time of turbulence? (b) What features of this communication suggest the potential for or resistance to transformative change? Comparing the results at the beginning of the period to other periods, gives insight into how social actors communicate and enact the organization during a threshold period where transformational change was possible. Results reveal identifiable patterns of communication as communication strategies, parameters, or basins of attraction. The overall pattern explains how micro communication patterns intersect and how the accumulation of these patterns may resist or accomplish change at a macro level.

  15. [Nursing between ethic and aesthetic. Profession described by media]. (United States)

    Gradellini, Cinzia; Idamou, Sara; Lusetti, Simona


    Nurse's role, according to the media, does not fit the role and evolution that nursing had in these last years: nursing remains unknown to public. Objective of research is to define how nurse's image is described by media. analysis of two newspapers, at national and local level with respect to articles about nurses, taking into account numbers of articles, position, topic (malpractice, frauds/crimes, job/economical cuts, praise). A second part of research has been focused on online newspapers, by using key words. Analysis of television medical dramas about presence of nurse, competences, relationship with physician/patient, social elements, context of work (acute or chronic), impact on patients welfare, and eventually ethical-deontological aspects has been carried out. on three hundred articles related health context, thirty-nine talk about nurse; five of those are in first page. 39% of articles regards frauds/crimes, 19% job/economical cuts, 15% malpractice. With respect to online articles, 66% concerns frauds/crimes. In medical dramas there is small attention to nurse who has generic competence as well as other health professional but doctor. The nurse character is played only by women. a low level of professionalism comes out both from newspaper and television. A specific professional identity is often absent furthermore nurses are relegated to a role of weakness in work and private circumstance.

  16. Parameterization effects in nonlinear models to describe growth curves

    Directory of Open Access Journals (Sweden)

    Tales Jesus Fernandes


    Full Text Available Various parameterizations of nonlinear models are common in the literature.In addition to complicating the understanding of these models, these parameterizations affect the nonlinearity measures and subsequently the inferences about the parameters. Bates and Watts (1980 quantified model nonlinearity using the geometric concept of curvature. Here we aimed to evaluate the three most common parameterizations of the Logistic and Gompertz nonlinear models with a focus on their nonlinearity and how this might affect inferences, and to establish relations between the parameters under the various expressions of the models. All parameterizations were adjusted to the growth data from pequi fruit. The intrinsic and parametric curvature described by Bates and Watts were calculated for each parameter. The choice of parameterization affects the nonlinearity measures, thus influencing the reliability and inferences about the estimated parameters. The most used methodologies presented the highest distance from linearity, showing the importance of analyzing these measures in any growth curve study. We propose that the parameterization in which the estimate of B is the abscissa of the inflection point should be used because of the lower deviations from linearity and direct biological interpretation for all parameters.

  17. A simple analytical expression to describe tidal damping or amplification (United States)

    Savenije, H. H. G.


    Can a single line describe tidal damping or amplification? Tidal damping and amplification in alluvial estuaries are constrained by an implicit feedback mechanism. The time lag ɛ between the occurrence of high water and high water slack is crucial in this regard. An analytical solution of the St. Venant equations appears to result in a surprisingly simple explicit relation for the tidal range, consisting of an exponential and a linear term. In alluvial estuaries, the linear term is dominant, particularly in the case of tidal amplification. In the case of tidal damping the exponential term only becomes important in the upper reaches of the estuary (preventing the expression for the tidal range from becoming negative). In tidal amplification, the exponential term is suppressed by the newly defined tidal Froude Number which (as it contains sin ɛ) tends to zero when the tidal wave gets a predominantly standing wave character. This negative feedback prevents the development of an exponentially increasing tidal range. Finally, the expression obtained is a very useful explicit equation to determine estuary parameters that are difficult to determine from direct observations, such as the roughness and the mean water depth.

  18. Terms for describing new, advanced nuclear power plants

    International Nuclear Information System (INIS)


    The IAEA's Division of Nuclear Power and the Fuel Cycle (then the Division of Nuclear Power) took an initiative in this field some years ago when work was initiated in the area of ''safety related terms'' by its International Working Group on Advanced Technologies for Water Cooled Reactors. This activity drew on advice from reactor design organizations, research institutes and government organizations, and aimed at helping eliminate confusion and misuse of safety related terms in widespread use, clarifying technical thinking regarding these terms, and improving nuclear power acceptability by providing precisely described technical meanings to them. After discussion also in the International Working Groups for Gas Cooled Reactors and Fast Reactors, the work resulted in the publication in September 1991 of IAEA-TECDOC-626, entitled ''Safety Related Terms for Advanced Nuclear Plants'', which has become a widely used publication. The present TECDOC has been prepared using the same approach to obtain advice from involved parties. Drafts of this report have been reviewed by the International Working Groups on Water Cooled Reactors, Fast Reactors and Gas Cooled Reactors, as well as by the IAEA's International Fusion Research Council (IFRC). The comments and suggestions received have been evaluated and utilized for producing the present TECDOC. 3 figs

  19. The self-describing data sets file protocol and Toolkit

    International Nuclear Information System (INIS)

    Borland, M.; Emery, L.


    The Self-Describing Data Sets (SDDS) file protocol continues to be used extensively in commissioning the Advanced Photon Source (APS) accelerator complex. SDDS protocol has proved useful primarily due to the existence of the SDDS Toolkit, a growing set of about 60 generic commandline programs that read and/or write SDDS files. The SDDS Toolkit is also used extensively for simulation postprocessing, giving physicists a single environment for experiment and simulation. With the Toolkit, new SDDS data is displayed and subjected to complex processing without developing new programs. Data from EPICS, lab instruments, simulation, and other sources are easily integrated. Because the SDDS tools are commandline-based, data processing scripts are readily written using the user's preferred shell language. Since users work within a UNIX shell rather than an application-specific shell or GUI, they may add SDDS-compliant programs and scripts to their personal toolkits without restriction or complication. The SDDS Toolkit has been run under UNIX on SUN OS4, HP-UX, and LINUX. Application of SDDS to accelerator operation is being pursued using Tcl/Tk to provide a GUI

  20. DBH Prediction Using Allometry Described by Bivariate Copula Distribution (United States)

    Xu, Q.; Hou, Z.; Li, B.; Greenberg, J. A.


    Forest biomass mapping based on single tree detection from the airborne laser scanning (ALS) usually depends on an allometric equation that relates diameter at breast height (DBH) with per-tree aboveground biomass. The incapability of the ALS technology in directly measuring DBH leads to the need to predict DBH with other ALS-measured tree-level structural parameters. A copula-based method is proposed in the study to predict DBH with the ALS-measured tree height and crown diameter using a dataset measured in the Lassen National Forest in California. Instead of exploring an explicit mathematical equation that explains the underlying relationship between DBH and other structural parameters, the copula-based prediction method utilizes the dependency between cumulative distributions of these variables, and solves the DBH based on an assumption that for a single tree, the cumulative probability of each structural parameter is identical. Results show that compared with the bench-marking least-square linear regression and the k-MSN imputation, the copula-based method obtains better accuracy in the DBH for the Lassen National Forest. To assess the generalization of the proposed method, prediction uncertainty is quantified using bootstrapping techniques that examine the variability of the RMSE of the predicted DBH. We find that the copula distribution is reliable in describing the allometric relationship between tree-level structural parameters, and it contributes to the reduction of prediction uncertainty.

  1. INCAS: an analytical model to describe displacement cascades

    International Nuclear Information System (INIS)

    Jumel, Stephanie; Claude Van-Duysen, Jean


    REVE (REactor for Virtual Experiments) is an international project aimed at developing tools to simulate neutron irradiation effects in Light Water Reactor materials (Fe, Ni or Zr-based alloys). One of the important steps of the project is to characterise the displacement cascades induced by neutrons. Accordingly, the Department of Material Studies of Electricite de France developed an analytical model based on the binary collision approximation. This model, called INCAS (INtegration of CAScades), was devised to be applied on pure elements; however, it can also be used on diluted alloys (reactor pressure vessel steels, etc.) or alloys composed of atoms with close atomic numbers (stainless steels, etc.). INCAS describes displacement cascades by taking into account the nuclear collisions and electronic interactions undergone by the moving atoms. In particular, it enables to determine the mean number of sub-cascades induced by a PKA (depending on its energy) as well as the mean energy dissipated in each of them. The experimental validation of INCAS requires a large effort and could not be carried out in the framework of the study. However, it was verified that INCAS results are in conformity with those obtained from other approaches. As a first application, INCAS was applied to determine the sub-cascade spectrum induced in iron by the neutron spectrum corresponding to the central channel of the High Flux Irradiation Reactor of Oak Ridge National Laboratory

  2. Using the MWC model to describe heterotropic interactions in hemoglobin (United States)

    Rapp, Olga


    Hemoglobin is a classical model allosteric protein. Research on hemoglobin parallels the development of key cooperativity and allostery concepts, such as the ‘all-or-none’ Hill formalism, the stepwise Adair binding formulation and the concerted Monod-Wymann-Changuex (MWC) allosteric model. While it is clear that the MWC model adequately describes the cooperative binding of oxygen to hemoglobin, rationalizing the effects of H+, CO2 or organophosphate ligands on hemoglobin-oxygen saturation using the same model remains controversial. According to the MWC model, allosteric ligands exert their effect on protein function by modulating the quaternary conformational transition of the protein. However, data fitting analysis of hemoglobin oxygen saturation curves in the presence or absence of inhibitory ligands persistently revealed effects on both relative oxygen affinity (c) and conformational changes (L), elementary MWC parameters. The recent realization that data fitting analysis using the traditional MWC model equation may not provide reliable estimates for L and c thus calls for a re-examination of previous data using alternative fitting strategies. In the current manuscript, we present two simple strategies for obtaining reliable estimates for MWC mechanistic parameters of hemoglobin steady-state saturation curves in cases of both evolutionary and physiological variations. Our results suggest that the simple MWC model provides a reasonable description that can also account for heterotropic interactions in hemoglobin. The results, moreover, offer a general roadmap for successful data fitting analysis using the MWC model. PMID:28793329

  3. Simple Model for Describing and Estimating Wind Turbine Dynamic Inflow

    DEFF Research Database (Denmark)

    Knudsen, Torben; Bak, Thomas


    a method that can be characterised as the blade element momentum method plus a dynamic equation for the induction factor. This method then needs calculations along the blade for a number of sections including numerical solution of equations. This is numerical demanding. The simplest models amounts...... model suggested here places itself in between the most complex and the most simple both in accuracy, numerical demands and physical appeal. The suggested models behavior is demonstrated by simulation and the usefulness for extended Kalman filtering is assessed both via simulated data and real full scale...

  4. Constitutive model describing dilatancy and cracking in brittle rocks

    International Nuclear Information System (INIS)

    Moss, W.C.; Gupta, Y.M.


    A micromechanical constitutive model, based on the responses of sliding cracks and elliptic cracks, is used to simulate the inelastic deformation of brittle rock. In addition to the usual incremental equations, the model has the following features: (1) activation equation that include the effects of friction and relate the far-field stresses of sliding and elliptic crack openings and lengths, (2) a stress intensity analysis of the sliding cracks that determines how much the cracks may grow, and (3) expressions for the crack strains that are constructed directly from the amount of crack sliding, opening, growth and the number of sliding and elliptic cracks in a given region. Numerical simulations of uniaxial and triaxial loading experiments on westerly granite were compared with experimental data to determine the validity of the constitutive model. These comparisons show that most of the uniaxial stress data and the loading portion of the triaxial data can be simulated quantitatively. The unloading portion of the triaxial data cannot be simulated properly, suggesting that a nonfrictional mechanism, not included in our model, may dominate the response in this region

  5. Describing phase coexistence in systems with small phases

    International Nuclear Information System (INIS)

    Lovett, R


    Clusters of atoms can be studied in molecular beams and by computer simulation; 'liquid drops' provide elementary models for atomic nuclei and for the critical nuclei of nucleation theory. These clusters are often described in thermodynamic terms, but the behaviour of small clusters near a phase boundary is qualitatively different from the behaviour at a first order phase transition in idealized thermodynamics. In the idealized case the density and entropy show mathematically sharp discontinuities when the phase boundary is crossed. In large, but finite, systems, the phase boundaries become regions of state space wherein these properties vary rapidly but continuously. In small clusters with a large surface/volume ratio, however, the positive interfacial free energy makes it unlikely, even in states on phase boundaries, that a cluster will have a heterogeneous structure. What is actually seen in these states is a structure that fluctuates in time between homogeneous structures characteristic of the two sides of the phase boundary. That is, structural fluctuations are observed. Thermodynamics only predicts average properties; statistical mechanics is required to understand these fluctuations. Failure to distinguish thermodynamic properties and characterizations of fluctuations, particularly in the context of first order phase transitions, has led to suggestions that the classical rules for thermodynamic stability are violated in small systems and that classical thermodynamics provides an inconsistent description of these systems. Much of the confusion stems from taking statistical mechanical identifications of thermodynamic properties, explicitly developed for large systems, and applying them uncritically to small systems. There are no inconsistencies if thermodynamic properties are correctly identified and the distinction between thermodynamic properties and fluctuations is made clear

  6. Printability of Synthetic Papers by Electrophotography

    Directory of Open Access Journals (Sweden)

    Rozália Szentgyörgyvölgyi


    Full Text Available This paper deals with the printability of synthetic papers by the electrophotography technique. Prints of cmyk colour fields from 20% to 100% raster tone values were printed on three types of synthetic papers (one film synthetic paper and two fiber synthetic papers. The investigation of the appearance included densitometric measurement of the cmyk prints. The results have shown differences in the optical density and optical tone value between cmyk prints made on various synthetic papers. The highest optical density and the increase of the optical tone value were observed on the film synthetic paper, where cmyk prints were more saturated. The highest abrasion resistance of cmyk prints was obtained from the fibre synthetic paper.

  7. On-machine ultrasonic sensors for paper stiffness. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Hall, Maclin S.; Jackson, Theodore G.; Brown, Ernest (Andy)


    This final report presents the results of a 5-year effort by the Institute of Paper Science and Technology (IPST) and its participating partners. The objective of this work was to develop and demonstrate sensors capable of measuring the velocity of ultrasound in the out-of-plane (ZD) and in-plane directions of paper as it is being produced on a commercial paper machine. On-machine ultrasonic measurements can be used to determine various mechanical properties of paper and to monitor process status and product quality. This report first presents a review of the background and potential benefits of on-machine ultrasonic measurements, then summarizes the results of previous work. The ZD measurement system involving the use of ultrasonic transducers in fluid-filled wheels is described in detail, including the method of measurement, the wheel mounting hardware, the on-machine operation, and an overview of the system software. Mill-trial results from two bump tests when producing 69{number_sign} and 55{number_sign} linearboard are presented. For the 69{number_sign} trial the correlation of ZD transit time with plybond and with ZDT (Z-direction tensile or internal bond strength) was greater than 0.8 (R squared). Also observed were ZD stiffness responses to refining and to calendering. ABB Industrial Systems Inc. was responsible for the in-plane sensor. A paper describing ABB's sensor and mill experience is appended.

  8. Middleware for Pervasive Healthcare - A White Paper

    DEFF Research Database (Denmark)

    Bardram, Jakob Eyvind; Christensen, Henrik Bærbak


    This white paper describes work-in-progress at the Center for Pervasive Computing (CfPC) at University of Aarhus. We describe our pervasive healthcare project, which is a collaboration between hospitals in the county of Aarhus, a Danish software company developing an electronic patient record...... of healthcare staff and sketch how pervasive middelware technologies may provide a strong foundation for pervasive and mobile solutions in this setting....

  9. HTGR Mechanistic Source Terms White Paper

    Energy Technology Data Exchange (ETDEWEB)

    Wayne Moe


    The primary purposes of this white paper are: (1) to describe the proposed approach for developing event specific mechanistic source terms for HTGR design and licensing, (2) to describe the technology development programs required to validate the design methods used to predict these mechanistic source terms and (3) to obtain agreement from the NRC that, subject to appropriate validation through the technology development program, the approach for developing event specific mechanistic source terms is acceptable

  10. A general modeling framework for describing spatially structured population dynamics (United States)

    Sample, Christine; Fryxell, John; Bieri, Joanna; Federico, Paula; Earl, Julia; Wiederholt, Ruscena; Mattsson, Brady; Flockhart, Tyler; Nicol, Sam; Diffendorfer, James E.; Thogmartin, Wayne E.; Erickson, Richard A.; Norris, D. Ryan


    Variation in movement across time and space fundamentally shapes the abundance and distribution of populations. Although a variety of approaches model structured population dynamics, they are limited to specific types of spatially structured populations and lack a unifying framework. Here, we propose a unified network-based framework sufficiently novel in its flexibility to capture a wide variety of spatiotemporal processes including metapopulations and a range of migratory patterns. It can accommodate different kinds of age structures, forms of population growth, dispersal, nomadism and migration, and alternative life-history strategies. Our objective was to link three general elements common to all spatially structured populations (space, time and movement) under a single mathematical framework. To do this, we adopt a network modeling approach. The spatial structure of a population is represented by a weighted and directed network. Each node and each edge has a set of attributes which vary through time. The dynamics of our network-based population is modeled with discrete time steps. Using both theoretical and real-world examples, we show how common elements recur across species with disparate movement strategies and how they can be combined under a unified mathematical framework. We illustrate how metapopulations, various migratory patterns, and nomadism can be represented with this modeling approach. We also apply our network-based framework to four organisms spanning a wide range of life histories, movement patterns, and carrying capacities. General computer code to implement our framework is provided, which can be applied to almost any spatially structured population. This framework contributes to our theoretical understanding of population dynamics and has practical management applications, including understanding the impact of perturbations on population size, distribution, and movement patterns. By working within a common framework, there is less chance

  11. A general modeling framework for describing spatially structured population dynamics. (United States)

    Sample, Christine; Fryxell, John M; Bieri, Joanna A; Federico, Paula; Earl, Julia E; Wiederholt, Ruscena; Mattsson, Brady J; Flockhart, D T Tyler; Nicol, Sam; Diffendorfer, Jay E; Thogmartin, Wayne E; Erickson, Richard A; Norris, D Ryan


    Variation in movement across time and space fundamentally shapes the abundance and distribution of populations. Although a variety of approaches model structured population dynamics, they are limited to specific types of spatially structured populations and lack a unifying framework. Here, we propose a unified network-based framework sufficiently novel in its flexibility to capture a wide variety of spatiotemporal processes including metapopulations and a range of migratory patterns. It can accommodate different kinds of age structures, forms of population growth, dispersal, nomadism and migration, and alternative life-history strategies. Our objective was to link three general elements common to all spatially structured populations (space, time and movement) under a single mathematical framework. To do this, we adopt a network modeling approach. The spatial structure of a population is represented by a weighted and directed network. Each node and each edge has a set of attributes which vary through time. The dynamics of our network-based population is modeled with discrete time steps. Using both theoretical and real-world examples, we show how common elements recur across species with disparate movement strategies and how they can be combined under a unified mathematical framework. We illustrate how metapopulations, various migratory patterns, and nomadism can be represented with this modeling approach. We also apply our network-based framework to four organisms spanning a wide range of life histories, movement patterns, and carrying capacities. General computer code to implement our framework is provided, which can be applied to almost any spatially structured population. This framework contributes to our theoretical understanding of population dynamics and has practical management applications, including understanding the impact of perturbations on population size, distribution, and movement patterns. By working within a common framework, there is less chance

  12. Describing Willow Flycatcher habitats: scale perspectives and gender differences (United States)

    Sedgwick, James A.; Knopf, Fritz L.


    We compared habitat characteristics of nest sites (female-selected sites) and song perch sites (male-selected sites) with those of sites unused by Willow Flycatchers (Empidonax traillii) at three different scales of vegetation measurement: (1) microplot (central willow [Salix spp.] bush and four adjacent bushes); (2) mesoplot (0.07 ha); and, (3) macroplot (flycatcher territory size). Willow Flycatchers exhibited vegetation preferences at all three scales. Nest sites were distinguished by high willow density and low variability in willow patch size and bush height. Song perch sites were characterized by large central shrubs, low central shrub vigor, and high variability in shrub size. Unused sites were characterized by greater distances between willows and willow patches, less willow coverage, and a smaller riparian zone width than either nest or song perch sites. At all scales, nest sites were situated farther from unused sites in multivariate habitat space than were song perch sites, suggesting (1) a correspondence among scales in their ability to describe Willow Flycatcher habitat, and (2) females are more discriminating in habitat selection than males. Microhabitat differences between male-selected (song perch) and female-selected (nest) sites were evident at the two smaller scales; at the finest scale, the segregation in habitat space between male-selected and female-selected sites was greater than that between male-selected and unused sites. Differences between song perch and nest sites were not apparent at the scale of flycatcher territory size, possibly due to inclusion of (1) both nest and song perch sites, (2) defended, but unused habitat, and/or (3) habitat outside of the territory, in larger scale analyses. The differences between nest and song perch sites at the finer scales reflect their different functions (e.g., nest concealment and microclimatic requirements vs. advertising and territorial defense, respectively), and suggest that the exclusive use

  13. Description and experimental transmission of Tetracapsuloides vermiformis n. sp (Cnidaria: Myxozoa) and guidelines for describing malacosporean species including reinstatement of Buddenbrockia bryozoides n. comb. (syn. Tetracapsula bryozoides)

    Czech Academy of Sciences Publication Activity Database

    Patra, Sneha; Hartigan, Ashlie; Morris, D.J.; Kodádková, Alena; Holzer, Astrid S.


    Roč. 144, č. 4 (2017), s. 497-511 ISSN 0031-1820 R&D Projects: GA ČR(CZ) GBP505/12/G112 Institutional support: RVO:60077344 Keywords : Buddenbrockia bryozoides n. comb. * Buddenbrockia plumatellae * Malacosporea * morphological variation * Myxozoa * species discrimination * taxonomy * Tetracapsuloides vermiformis n. sp. Subject RIV: EG - Zoology OBOR OECD: Zoology Impact factor: 2.713, year: 2016

  14. Archigregarines of the English Channel revisited: New molecular data on Selenidium species including early described and new species and the uncertainties of phylogenetic relationships

    Czech Academy of Sciences Publication Activity Database

    Rueckert, S.; Horák, Aleš


    Roč. 12, č. 11 (2017), č. článku e0187430. E-ISSN 1932-6203 R&D Projects: GA ČR GA15-17643S EU Projects: European Commission(XE) 316304 - MODBIOLIN Institutional support: RVO:60077344 Keywords : gregarine parasites apicomplexa * sabellaria alveolata l * revised classification * sequence alignment * genome-sequence * ultrastructure * checklist * lecudina * sporozoa Subject RIV: EB - Genetics ; Molecular Biology OBOR OECD: Biochemistry and molecular biology Impact factor: 2.806, year: 2016

  15. Namibian prisoners describe barriers to HIV antiretroviral therapy adherence. (United States)

    Shalihu, Nauyele; Pretorius, Louise; van Dyk, Agnes; Vander Stoep, Ann; Hagopian, Amy


    Little is available in scholarly literature about how HIV-positive prisoners, especially in low-income countries, access antiretroviral therapy (ART) medication. We interviewed 18 prisoners at a large prison in Namibia to identify barriers to medication adherence. The lead nurse researcher was a long-standing clinic employee at the prison, which afforded her access to the population. We identified six significant barriers to adherence, including (1) the desire for privacy and anonymity in a setting where HIV is strongly stigmatized; (2) the lack of simple supports for adherence, such as availability of clocks; (3) insufficient access to food to support the toll on the body of ingesting taxing ART medications; (4) commodification of ART medication; (5) the brutality and despair in the prison setting, generally leading to discouragement and a lack of motivation to strive for optimum health; and (6) the lack of understanding about HIV, how it is transmitted, and how it is best managed. Because most prisoners eventually transition back to communitysettings when their sentences are served, investments in prison health represent important investments in public health.

  16. A model to describe Cr(VI) kinetics biosorption. (United States)

    Poch, Jordi; Villaescusa, Isabel


    In this work, the effect of pH control on kinetics of Cr(VI) sorption onto grape stalks has been studied. A set of experiments were performed at a constant pH 3+/-0.1 which was assured by means of a Programmable Logic Controller (PLC). In a second set of experiments the initial pH was adjusted to pH 3 and then pH was allowed to freely evolve during the sorption process. Both sets of experiments were carried out at different temperatures within the range 5-50 degrees C. Constant temperature was assured by water recirculation from a thermostatic bath. Results demonstrated that pH has high influence on kinetics only at the lowest temperatures studied. A model based on a complex reaction sequence which takes into account Cr(VI) sorption, reduction of Cr(VI) to Cr(III), sorption of the formed Cr(III) which includes the pH variation during the sorption process has been proposed to model Cr(VI) kinetics sorption onto grape stalk waste. Furthermore, the robustness of the model has been tested. (c) 2009 Elsevier B.V. All rights reserved.

  17. Chemical Reactivity as Described by Quantum Chemical Methods

    Directory of Open Access Journals (Sweden)

    F. De Proft


    Full Text Available Abstract: Density Functional Theory is situated within the evolution of Quantum Chemistry as a facilitator of computations and a provider of new, chemical insights. The importance of the latter branch of DFT, conceptual DFT is highlighted following Parr's dictum "to calculate a molecule is not to understand it". An overview is given of the most important reactivity descriptors and the principles they are couched in. Examples are given on the evolution of the structure-property-wave function triangle which can be considered as the central paradigm of molecular quantum chemistry to (for many purposes a structure-property-density triangle. Both kinetic as well as thermodynamic aspects can be included when further linking reactivity to the property vertex. In the field of organic chemistry, the ab initio calculation of functional group properties and their use in studies on acidity and basicity is discussed together with the use of DFT descriptors to study the kinetics of SN2 reactions and the regioselectivity in Diels Alder reactions. Similarity in reactivity is illustrated via a study on peptide isosteres. In the field of inorganic chemistry non empirical studies of adsorption of small molecules in zeolite cages are discussed providing Henry constants and separation constants, the latter in remarkable good agreement with experiments. Possible refinements in a conceptual DFT context are presented. Finally an example from biochemistry is discussed : the influence of point mutations on the catalytic activity of subtilisin.

  18. A new settling velocity model to describe secondary sedimentation

    DEFF Research Database (Denmark)

    Ramin, Elham; Wágner, Dorottya Sarolta; Yde, Lars


    Secondary settling tanks (SSTs) are the most hydraulically sensitive unit operations in biological wastewater treatment plants. The maximum permissible inflow to the plant depends on the efficiency of SSTs in separating and thickening the activated sludge. The flow conditions and solids distribut......Secondary settling tanks (SSTs) are the most hydraulically sensitive unit operations in biological wastewater treatment plants. The maximum permissible inflow to the plant depends on the efficiency of SSTs in separating and thickening the activated sludge. The flow conditions and solids...... associated with their calibration. In this study, we developed a new settling velocity model, including hindered, transient and compression settling, and showed that it can be calibrated to data from a simple, novel settling column experimental set-up using the Bayesian optimization method DREAM......(ZS). In addition, correlations between the Herschel-Bulkley rheological model parameters and sludge concentration were identified with data from batch rheological experiments. A 2-D axisymmetric CFD model of a circular SST containing the new settling velocity and rheological model was validated with full...

  19. Using multistage models to describe radiation-induced leukaemia

    International Nuclear Information System (INIS)

    Little, M.P.; Muirhead, C.R.; Boice, J.D. Jr.; Kleinerman, R.A.


    The Armitage-Doll model of carcinogenesis is fitted to data on leukaemia mortality among the Japanese atomic bomb survivors with the DS86 dosimetry and on leukaemia incidence in the International Radiation Study of Cervical Cancer patients. Two different forms of model are fitted: the first postulates up to two radiation-affected stages and the second additionally allows for the presence at birth of a non-trivial population of cells which have already accumulated the first of the mutations leading to malignancy. Among models of the first form, a model with two adjacent radiation-affected stages appears to fit the data better than other models of the first form, including both models with two affected stages in any order and models with only one affected stage. The best fitting model predicts a linear-quadratic dose-response and reductions of relative risk with increasing time after exposure and age at exposure, in agreement with what has previously been observed in the Japanese and cervical cancer data. However, on the whole it does not provide an adequate fit to either dataset. The second form of model appears to provide a rather better fit, but the optimal models have biologically implausible parameters (the number of initiated cells at birth is negative) so that this model must also be regarded as providing an unsatisfactory description of the data. (author)

  20. Lead acid batteries simulation including experimental validation

    Energy Technology Data Exchange (ETDEWEB)

    Achaibou, N.; Malek, A. [Division Energie Solaire Photovoltaique, Centre de Developpement des Energies Renouvelables, B.P. 62, Route de l' Observatoire, Bouzareah, Alger (Algeria); Haddadi, M. [Laboratoire de Dispositif de Communication et de Conversion Photovoltaique Ecole Nationale Polytechnique, Rue Hassen Badi, El Harrach, Alger (Algeria)


    The storage of energy in batteries is a cause of the failure and loss of reliability in PV systems. The battery behavior has been largely described in the literature by many authors; the selected models are of Monegon and CIEMAT. This paper reviews the two general lead acid battery models and their agreement with experimental data. In order to validate these models, the behavior of different battery cycling currents has been simulated. Results obtained have been compared to real data. The CIEMAT model presents a good performance compared to Monegon's model. (author)

  1. Predator, Pet Lesbian, or Just The Nanny? LGBTQ Parents of Children With Disabilities Describe Categorization. (United States)

    Gibson, Margaret F


    How are lesbian/gay/bisexual/trans/queer (LGBTQ) parents of children with disabilities categorized by service providers, and how do parents anticipate, interpret, and respond to such categorizations? This intersectional study investigated the experiences of LGBTQ parents of children with disabilities with service providers in Toronto, Canada. Parents described pressures to "fit" into providers' limited understanding of family. Some parents described facing overt discrimination, including one parent who was seen as a possible sexual predator. Some described being perceived as representatives of "diversity" for organizations, or "pet lesbians" in the words of one couple. Others described being misread as a non-parent, as in "just the nanny," particularly in conjunction with their racial minority status. Parents described how their experiences of being "outside the mainstream" helped them challenge systems and normative beliefs. Findings suggest that a context of scarce disability resources shapes parents' experiences of how LGBTQ identity comes to matter.

  2. Electrical performances of pyroelectric bimetallic strip heat engines describing a Stirling cycle (United States)

    Arnaud, A.; Boughaleb, J.; Monfray, S.; Boeuf, F.; Cugat, O.; Skotnicki, T.


    This paper deals with the analytical modeling of pyroelectric bimetallic strip heat engines. These devices are designed to exploit the snap-through of a thermo-mechanically bistable membrane to transform a part of the heat flowing through the membrane into mechanical energy and to convert it into electric energy by means of a piezoelectric layer deposited on the surface of the bistable membrane. In this paper, we describe the properties of these heat engines in the case when they complete a Stirling cycle, and we evaluate the performances (available energy, Carnot efficiency...) of these harvesters at the macro- and micro-scale.

  3. Resistant hypertension: do all definitions describe the same patients? (United States)

    Boswell, L; Pascual, J; Oliveras, A


    Resistant hypertension (RH) is defined as blood pressure (BP) that remains ⩾140 and/or 90 mm Hg despite therapy with ⩾3 full-dose antihypertensive drugs (classical definition=CD). A definition proposed subsequently (new definition=ND) includes patients requiring ⩾4 drugs irrespective of BP values. We aimed to evaluate whether both definitions characterize the same kind of patients.One hundred and twenty-four consecutively attended patients with RH were classified into two groups according to their BP control: 66 patients had non-controlled BP (all those who met the CD criteria plus a few patients who met the ND criteria); 58 patients had controlled BP (all with RH according to the ND). Clinical, laboratory and office BP data were recorded. RH patients with non-controlled BP were more frequently diabetic (72% vs 49%), and had higher plasmatic glucose (149 vs 130 mg dl(-1)), cholesterol (179 vs 164 mg dl(-1)), low-density lipoprotein (LDL)-cholesterol (107 vs 95 mg dl(-1)) and triglyceride (169 vs 137 mg dl(-1)) levels; P<0.05 for all comparisons. In multivariate logistic regression analysis, the variables that independently associated with non-controlled BP were diabetes (P=0.001) and higher LDL-cholesterol (P=0.007).We conclude that, although both cohorts of patients are phenotypically quite similar, uncontrolled RH patients have higher prevalence of diabetes mellitus and higher LDL-cholesterol levels than controlled RH patients.

  4. Describing Speech Usage in Daily Activities in Typical Adults. (United States)

    Anderson, Laine; Baylor, Carolyn R; Eadie, Tanya L; Yorkston, Kathryn M


    "Speech usage" refers to what people want or need to do with their speech to meet communication demands in life roles. The purpose of this study was to contribute to validation of the Levels of Speech Usage scale by providing descriptive data from a sample of adults without communication disorders, comparing this scale to a published Occupational Voice Demands scale and examining predictors of speech usage levels. This is a survey design. Adults aged ≥25 years without reported communication disorders were recruited nationally to complete an online questionnaire. The questionnaire included the Levels of Speech Usage scale, questions about relevant occupational and nonoccupational activities (eg, socializing, hobbies, childcare, and so forth), and demographic information. Participants were also categorized according to Koufman and Isaacson occupational voice demands scale. A total of 276 participants completed the questionnaires. People who worked for pay tended to report higher levels of speech usage than those who do not work for pay. Regression analyses showed employment to be the major contributor to speech usage; however, considerable variance left unaccounted for suggests that determinants of speech usage and the relationship between speech usage, employment, and other life activities are not yet fully defined. The Levels of Speech Usage may be a viable instrument to systematically rate speech usage because it captures both occupational and nonoccupational speech demands. These data from a sample of typical adults may provide a reference to help in interpreting the impact of communication disorders on speech usage patterns. Copyright © 2016 The Voice Foundation. Published by Elsevier Inc. All rights reserved.

  5. Movement Features Which Describe the Flat Bench Press

    Directory of Open Access Journals (Sweden)

    Król Henryk


    Full Text Available Introduction. In sport technique studies, motion features can be useful as they have a certain defined measure [1]. In this work, we examined the following three features: the structure of the movement (all the characteristics of the movement, the fluency of the movement, and the rhythm of the movement. The aim of the study was to determine the usefulness of the selected movement features in the evaluation of the flat bench press. The protocol of the study included a flat bench press with free weights and a “touch-and-go” technique. Material and methods. The study involved twenty healthy men; however, only two were selected for analysis. The first subject was a 25-year-old powerlifter (body mass = 95 kg; body height = 182 cm; 1-RM in flat bench press = 145 kg. The second one was a 25-year-old bodybuilder (body mass = 77 kg; body height = 175 cm; 1-RM in flat bench press = 100 kg. The subjects performed consecutive sets of a single repetition of flat bench pressing with an increasing load (70, 80, 90, and 100% 1-RM, with the anticipated maximum weight, until the completion of one repetition maximum. Multidimensional movement analysis was made with the measuring system Smart-E (BTS, Italy, which consisted of six infrared cameras (120 Hz and a wireless module to measure muscle bioelectric activity (Pocket EMG. Results. It was demonstrated that the internal structure of the bench press performed by the bodybuilder and the powerlifter was different. As the time-history of barbell kinematics (the acceleration-time curve showed, with increased loading of the barbell, the rhythm of the flat bench press changed, and the fluidity of the movement worsened.

  6. Study of nonlinear waves described by the cubic Schroedinger equation

    Energy Technology Data Exchange (ETDEWEB)

    Walstead, A.E.


    The cubic Schroedinger equation (CSE) is ubiquitous as a model equation for the long-time evolution of finite-amplitude near-monochromatic dispersive waves. It incorporates the effects of the radiation field pressure on the constitutive properties of the supporting medium in a self-consistent manner. The properties of the uniformly transiating periodic wave solutions of the one-dimensional CSE are studied here. These (so-called cnoidal) waves are characterized by the values of four parameters. Whitham's averaged variational principle is used to derive a system of quasilinear evolution equations (the modulational equations) for the values of these parameters when they are slowly varying in space and time. Explicit expressions for the characteristic velocities of the modulational equations are obtained for the full set of cnoidal waves. Riemann invariants are obtained for several limits for the stable case, and growth rates are obtained for several limits, including the solitary wave chain, for the unstable case. The results for several nontrivial limiting cases agree with those obtained by independent methods by others. The dynamics of the CSE generalized to two spatial dimensions are studied for the unstable case. A large class of similarity solutions with cylindrical symmetry are obtained systematically using infinitesimal transformation group techniques. The methods are adapted to obtain the symmetries of the action functional of the CSE and to deduce nine integral invariants. A numerical study of the self-similar solutions reveals that they are modulationally unstable and that singularities dominate the dynamics of the CSE in two dimensions. The CSE is derived using perturbation theory for a specific problem in plasma physics: the evolution of the envelope of a near-monochromatic electromagnetic wave in a cold magnetized plasma. 13 figures, 2 tables.

  7. Selected papers on classical analysis

    CERN Document Server

    Nomizu, Katsumi


    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.

  8. (including travel dates) Proposed itinerary

    Indian Academy of Sciences (India)


    31 July to 22 August 2012 (including travel dates). Proposed itinerary: Arrival in Bangalore on 1 August. 1-5 August: Bangalore, Karnataka. Suggested institutions: Indian Institute of Science, Bangalore. St Johns Medical College & Hospital, Bangalore. Jawaharlal Nehru Centre, Bangalore. 6-8 August: Chennai, TN.

  9. Responsibility for scientific misconduct in collaborative papers. (United States)

    Helgesson, Gert; Eriksson, Stefan


    This paper concerns the responsibility of co-authors in cases of scientific misconduct. Arguments in research integrity guidelines and in the bioethics literature concerning authorship responsibilities are discussed. It is argued that it is unreasonable to claim that for every case where a research paper is found to be fraudulent, each author is morally responsible for all aspects of that paper, or that one particular author has such a responsibility. It is further argued that it is more constructive to specify what task responsibilities come with different roles in a project and describe what kinds of situations or events call for some kind of action, and what the appropriate actions might be.

  10. An Integrated Biochemistry Laboratory, Including Molecular Modeling (United States)

    Hall, Adele J. Wolfson Mona L.; Branham, Thomas R.


    The dilemma of designing an advanced undergraduate laboratory lies in the desire to teach and reinforce basic principles and techniques while at the same time exposing students to the excitement of research. We report here on a one-semester, project-based biochemistry laboratory that combines the best features of a cookbook approach (high success rate, achievement of defined goals) with those of an investigative, discovery-based approach (student involvement in the experimental design, excitement of real research). Individual modules may be selected and combined to meet the needs of different courses and different institutions. The central theme of this lab is protein purification and design. This laboratory accompanies the first semester of biochemistry (Structure and Function of Macromolecules, a course taken mainly by junior and senior chemistry and biological chemistry majors). The protein chosen as the object of study is the enzyme lysozyme, which is utilized in all projects. It is suitable for a student lab because it is easily and inexpensively obtained from egg white and is extremely stable, and its high isoelectric point (pI = 11) allows for efficient separation from other proteins by ion-exchange chromatography. Furthermore, a literature search conducted by the resourceful student reveals a wealth of information, since lysozyme has been the subject of numerous studies. It was the first enzyme whose structure was determined by crystallography (1). Hendrickson et al. (2) have previously described an intensive one-month laboratory course centered around lysozyme, although their emphasis is on protein stability rather than purification and engineering. Lysozyme continues to be the focus of much exciting new work on protein folding and dynamics, structure and activity (3 - 5). This lab course includes the following features: (i) reinforcement of basic techniques, such as preparation of buffers, simple enzyme kinetics, and absorption spectroscopy; (ii

  11. Hygroscopic behaviour of paper and books

    DEFF Research Database (Denmark)

    Derluyn, Hannelore; Janssen, Hans; Diepens, Jan


    This study presents experimental analysis and numerical modeling of hygroscopic moisture buffering by paper and books. First, a literature review of moisture transport properties of paper is presented. Experimental work on two paper types includes SEM analysis of the paper structure, determination...... and not on the relative humidity. Books consist of several paper sheets with air layers between the sheets. To take the air layers into account, a parallel transport model is proposed to determine the effective moisture transport properties of books taking into account the air layers. The dynamic hygroscopic behavior...... of small book samples was measured. It is shown that, although the water vapor permeability of different paper types can be quite different, the effusivity of a book highly depends on the presence of the air layers and can therefore remain comparable for different paper types....

  12. Processing and Structure of Carbon Nanofiber Paper

    Directory of Open Access Journals (Sweden)

    Zhongfu Zhao


    Full Text Available A unique concept of making nanocomposites from carbon nanofiber paper was explored in this study. The essential element of this method was to design and manufacture carbon nanofiber paper with well-controlled and optimized network structure of carbon nanofibers. In this study, carbon nanofiber paper was prepared under various processing conditions, including different types of carbon nanofibers, solvents, dispersants, and acid treatment. The morphologies of carbon nanofibers within the nanofiber paper were characterized with scanning electron microscopy (SEM. In addition, the bulk densities of carbon nanofiber papers were measured. It was found that the densities and network structures of carbon nanofiber paper correlated to the dispersion quality of carbon nanofibers within the paper, which was significantly affected by papermaking process conditions.

  13. Highly Cited Soviet Papers: An Exploratory Investigation. (United States)

    Narin, Fransic; And Others


    The bibliographic methodology of citation tabulation was applied to the problem of identifying highly cited Soviet scientific papers (in Science Citation Index). Findings indicate that lists generated are indicative of areas of strong Soviet research and that institutions producing these papers include the most important Soviet labs. (Author/JN)

  14. Popullution: A Position Paper on Population. (United States)

    Durner, Mary Beth

    This position paper presents an interdisciplinary approach to the study of population. Six main sections are included in the paper: Introduction, The Growth of the Human Population, The Psychological Effects of Population Growth, Overpopulated America, Myths Concerning Population Growth and Control, and Population Education. Section 1, an…

  15. Staff Issue Paper on Institutional Arrangements. (United States)

    Department of State, Washington, DC.

    Staff Issue Papers for the Secretary of State's Advisory Committee on the 1972 United Nations Conference on the Human Environment, Stockholm, Sweden, are summarized in this compendium. Papers developed by the various sub-committees are included for: (1) institutional arrangements; (2) development and the environment; (3) human settlements; (4)…

  16. Recycled Office Paper: Why It Costs More. (United States)

    Usherson, Judy


    Discusses obstacles to making recycled office paper cheaper. Explains how the economics of recycled office paper discourages recycling by commodity mills. Includes discussion of integrated and nonintegrated mills, commodity and specialty mills, specialty printing and writing mills, postconsumer material, supply and demand, and economic…

  17. International Issues. Paper Presentations: Session C. (United States)


    This document contains eight papers from the international issues section of an international conference on vocational education and training (VET) for lifelong learning in the information era. The following papers are included: "The Impact of Globalisation and the Changing Nature of Work on Vocational Education and Training" (Chris…

  18. Selected papers on analysis and related topics

    CERN Document Server


    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.

  19. Paper recycling framework, the "Wheel of Fiber". (United States)

    Ervasti, Ilpo; Miranda, Ruben; Kauranen, Ilkka


    At present, there is no reliable method in use that unequivocally describes paper industry material flows and makes it possible to compare geographical regions with each other. A functioning paper industry Material Flow Account (MFA) that uses uniform terminology and standard definitions for terms and structures is necessary. Many of the presently used general level MFAs, which are called frameworks in this article, stress the importance of input and output flows but do not provide a uniform picture of material recycling. Paper industry is an example of a field in which recycling plays a key role. Additionally, terms related to paper industry recycling, such as collection rate, recycling rate, and utilization rate, are not defined uniformly across regions and time. Thus, reliably comparing material recycling activity between geographical regions or calculating any regional summaries is difficult or even impossible. The objective of this study is to give a partial solution to the problem of not having a reliable method in use that unequivocally describes paper industry material flows. This is done by introducing a new material flow framework for paper industry in which the flow and stage structure supports the use of uniform definitions for terms related to paper recycling. This new framework is termed the Detailed Wheel of Fiber. Copyright © 2016 Elsevier Ltd. All rights reserved.

  20. Malignant lymphomas (including myeloproliferative disorders)

    International Nuclear Information System (INIS)

    Todd, I.D.H.


    This chapter deals with the radiotherapy and cytotoxic chemotherapy of the malignant lymphomas. Included within this group are Hodgkin's disease, non-Hodgkin's lymphoma, mycosis fungoides, and chronic lymphatic leukaemia. A further section deals with the myeloproliferative disorders, including granulocytic leukaemia, polycythaemia vera, and primary thrombocythaemia. Excluded are myeloma and reticulum cell sarcoma of bone and acute leukaemia. With regard to Hodgkin's disease, the past 25 years have seen general recognition of the curative potential of radiotherapy, at least in the local stages, and, more recently, awareness of the ability to achieve long-term survival after combination chemotherapy in generalised or in recurrent disease. At the same time the importance of staging has become appreciated and the introduction of procedures such as lymphography, staging laparotomy, and computer tomography (CT) has enormously increased its reliability. Advances have not been so dramatic in the complex group of non-Hodgkins's lymphomas, but are still very real

  1. Better Research, Better Programmes? Cardiff Paper. (United States)

    Fase, Willem

    Lessons learned from Onderwijs un Sociaal Milieu (OSM), or Education and Social Origin, the largest compensation and enrichment program ever developed in The Netherlands, are described in this paper. Although the program did not raise lower class students' standardized test scores to the national level, the program had overly ambitious goals and…

  2. Incorporating Film into the Research Paper (United States)

    Fontenot, Michael J.; Fontenot, Karen A.


    Teachers face two serious difficulties when assigning research papers: (1) motivation and mental disposition; and (2) plagiarism as a by-product of the Web. In this article, the authors describe how they have addressed both these problems by strategically using appropriate motion pictures as entrees into the subject matter and as points of…

  3. Sex, Disorder and Perversion | Williamson | Philosophical Papers

    African Journals Online (AJOL)

    This paper aims to describe an objective account of sexual perversion. That is, it seeks to characterize sexual perversion as something which is not simply a deviation from a statistical norm but rather as something which violates an objective naturalistic norm. The central point is that perversion consists in the introduction of ...

  4. Heat Transfer in a Paper Cup (United States)

    Ribeiro, Carla


    The double-wall paper cup is an everyday object that can be used in the laboratory to study heat transfer. The experiment described here has been done by physics students aged 12-13 years; it can also be used in a different context to prompt debate about environmental issues.

  5. Occasional Papers in Distance Education. Number 9. (United States)

    Roberts, David, Ed.; Meacham, David, Ed.

    This collection of documents contains four papers: (1) "An Orientation Seminar for Prospective Wine Science and Viticulture Students" (A. V. Hood), which describes an innovation organized by staff involved in the external teaching of wine science and viticulture who sought to break down the barriers and concerns of prospective students…

  6. Abstracts of Research Papers 1977 AAHPER Convention. (United States)

    Sage, George H., Ed.

    This volume of abstracts describes papers written on the following topics: (1) Strength Physiology; (2) Learning Disabilities (motor); (3) Physiology - General; (4) Work Capacity; (5) Measurement and Recreation; (6) Biomechanics; (7) Professional Preparation (physical education); (8) Muscle Performance; (9) Sociology of Sport; (10) History of…

  7. Internet access to scanned paper documents

    NARCIS (Netherlands)

    Worring, M.; Smeulders, A.W.M.; Witten, I.; Akscyn, R.; Shipman, F.M.


    In this contribution we identify the different structures to encounterin a hyperdocument. Methods are described for deriving those structures from scanned paper originals. The content and structure of the document is then made available in a form suited for an Internet browser. It provides

  8. Selected Papers in School Finance: 1975. (United States)

    Tron, Esther O.; And Others

    The three papers in this volume describe exploratory efforts to adjust state aid to local school districts so as to reflect differences in local costs unrelated to school program content. Each study is limited to an analysis of relevant data for one of the three states considered--Michigan, California, and Florida. The underlying assumption is…

  9. Position paper persuasive technologies in challenging contexts

    NARCIS (Netherlands)

    Boer, de J. (Johannes)


    This paper, presented at the Persuasive Conference 2014 (21-23 May, Padua, Italy) describes an experiment in which the particpants daily received a SMS message. De SMS message was meant was meant to trigger participants on safety awareness, cleaning behaviour, and quick and instant tasks.

  10. Multi-objective Transmission Planning Paper

    DEFF Research Database (Denmark)

    Xu, Zhao; Dong, Zhao Yang; Wong, Kit Po


    This paper describes a transmission expansion planning method based on multi-objective optimization (MOOP). The method starts with constructing a candidate pool of feasible expansion plans, followed by selection of the best candidates through MOOP, of which multiple objectives are tackled...

  11. Evolution of the scientific paper

    Energy Technology Data Exchange (ETDEWEB)

    Harmon, J.E.


    The first papers reporting original research results in technical periodicals and proceedings appeared in the late 17th century. Since that time, the typical scientific paper has evolved from a fairly simple document, accessible to a general audience, to a much more complex one, aimed at a specialized audience. The purpose of this article is to give an overview of what the first scientific papers were like and how they evolved to their present form and style. To facilitate this discussion, the scientific paper`s development has arbitrarily been divided into four stages: the origin and formative years of the scientific paper (1665-1765), emergence of scientific papers written for specialized publications (1765-1865), development of the modem scientific paper (1865-1965), and hyperspecialization and computerization of the modem scientific paper (1965-?).

  12. Recycling management including transportation experience

    International Nuclear Information System (INIS)

    Ricaud, J.L.


    The nuclear industry, at least in advanced countries such as Japan, France and other European countries, has developed for years a global strategy of fuel utilization which implies an extensive recycling and reuse of spent fuel. Such recycling strategies are now increasingly required from the industry in general by the various Governments and international organizations. Nuclear fuel recycling and waste management are the two faces of the same policy: the closed fuel cycle, whereby reprocessing of spent fuel makes available for recycling the energetic contents : uranium and plutonium, while segregating the real waste in categories for their specific treatment, conditioning, storage, transportation and final disposal. Plutonium recycling is performed through the fabrication of the so-called mixed oxide fuel (MOX), where fissile plutonium replaces the U 235 isotope used in UO 2 fuel. The international trade of nuclear materials and services, under close control of IAEA and other national and international organization, has let to the circulation of materials between the producers of uranium and enrichment fuel, fabrication, reprocessing and recycling services, and the customers worldwide. The industrial transport experience now accumulated shows an excellent record in terms of safety and quality. This communication will describe the current situation and future trends of the recycling route mainly through COGEMA industrial experience. 1 fig

  13. Describing the growth and rapid weight gain of urban Australian Aboriginal infants. (United States)

    Webster, Vana; Denney-Wilson, Elizabeth; Knight, Jennifer; Comino, Elizabeth


    The aims of this paper are to describe the growth of urban Australian Aboriginal infants from birth to 24 months of age and to identify the proportion of these infants experiencing rapid weight gain (RWG) and overweight/obesity. The Gudaga Study is a longitudinal birth cohort of 159 Australian Aboriginal children born on the urban fringe of Sydney. Birthweight and length were extracted from hospital data. Children with a birthweight >1500 grams were included in the analysis (n = 157). Weight, length and head circumference were measured at 2-3 weeks and then six-monthly until 24 months of age. Age- and gender-specific Z-scores were determined from the Centers for Disease Control (CDC) 2000 growth charts for weight, length, head circumference and body mass index (BMI). The proportion of children experiencing RWG (an increase in weight-for-age Z-scores ≥0.67 between birth and 12 months) was calculated. The association between RWG and ≥85th CDC percentile for BMI at 24 months was tested using Pearson's χ². The mean weight of Gudaga infants was less than the CDC mean length-for-age at birth and 2-3 weeks of age but greater than CDC mean length-for-age and weight-for-age at 18 and 24 months of age. Overall, 42 infants (34.4%) experienced RWG, and 45 infants (36.9%) were overweight/obese at 24 months of age. A greater proportion of those who experienced RWG (61.9%) were overweight/obese at 24 months than those who did not experience RWG (23.8%). Our study suggests a concerning proportion of urban Indigenous infants experience RWG and overweight/obesity in early childhood.

  14. Comparison of mercury contamination in live and dead dolphins from a newly described species, Tursiops australis.

    Directory of Open Access Journals (Sweden)

    Alissa Monk

    Full Text Available Globally it is estimated that up to 37% of all marine mammals are at a risk of extinction, due in particular to human impacts, including coastal pollution. Dolphins are known to be at risk from anthropogenic contaminants due to their longevity and high trophic position. While it is known that beach-cast animals are often high in contaminants, it has not been possible to determine whether levels may also be high in live animals from the same populations. In this paper we quantitatively assess mercury contamination in the two main populations of a newly described dolphin species from south eastern Australia, Tursiops australis. This species appear to be limited to coastal waters in close proximity to a major urban centre, and as such is likely to be vulnerable to anthropogenic pollution. For the first time, we were able to compare blubber mercury concentrations from biopsy samples of live individuals and necropsies of beach-cast animals and show that beach-cast animals were highly contaminated with mercury, at almost three times the levels found in live animals. Levels in live animals were also high, and are attributable to chronic low dose exposure to mercury from the dolphin's diet. Measurable levels of mercury were found in a number of important prey fish species. This illustrates the potential for low dose toxins in the environment to pass through marine food webs and potentially contribute to marine mammal deaths. This study demonstrates the potential use of blubber from biopsy samples to make inferences about the health of dolphins exposed to mercury.

  15. Comparison of mercury contamination in live and dead dolphins from a newly described species, Tursiops australis. (United States)

    Monk, Alissa; Charlton-Robb, Kate; Buddhadasa, Saman; Thompson, Ross M


    Globally it is estimated that up to 37% of all marine mammals are at a risk of extinction, due in particular to human impacts, including coastal pollution. Dolphins are known to be at risk from anthropogenic contaminants due to their longevity and high trophic position. While it is known that beach-cast animals are often high in contaminants, it has not been possible to determine whether levels may also be high in live animals from the same populations. In this paper we quantitatively assess mercury contamination in the two main populations of a newly described dolphin species from south eastern Australia, Tursiops australis. This species appear to be limited to coastal waters in close proximity to a major urban centre, and as such is likely to be vulnerable to anthropogenic pollution. For the first time, we were able to compare blubber mercury concentrations from biopsy samples of live individuals and necropsies of beach-cast animals and show that beach-cast animals were highly contaminated with mercury, at almost three times the levels found in live animals. Levels in live animals were also high, and are attributable to chronic low dose exposure to mercury from the dolphin's diet. Measurable levels of mercury were found in a number of important prey fish species. This illustrates the potential for low dose toxins in the environment to pass through marine food webs and potentially contribute to marine mammal deaths. This study demonstrates the potential use of blubber from biopsy samples to make inferences about the health of dolphins exposed to mercury.

  16. Comparison of Mercury Contamination in Live and Dead Dolphins from a Newly Described Species, Tursiops australis (United States)

    Monk, Alissa; Charlton-Robb, Kate; Buddhadasa, Saman; Thompson, Ross M.


    Globally it is estimated that up to 37% of all marine mammals are at a risk of extinction, due in particular to human impacts, including coastal pollution. Dolphins are known to be at risk from anthropogenic contaminants due to their longevity and high trophic position. While it is known that beach-cast animals are often high in contaminants, it has not been possible to determine whether levels may also be high in live animals from the same populations. In this paper we quantitatively assess mercury contamination in the two main populations of a newly described dolphin species from south eastern Australia, Tursiops australis. This species appear to be limited to coastal waters in close proximity to a major urban centre, and as such is likely to be vulnerable to anthropogenic pollution. For the first time, we were able to compare blubber mercury concentrations from biopsy samples of live individuals and necropsies of beach-cast animals and show that beach-cast animals were highly contaminated with mercury, at almost three times the levels found in live animals. Levels in live animals were also high, and are attributable to chronic low dose exposure to mercury from the dolphin's diet. Measurable levels of mercury were found in a number of important prey fish species. This illustrates the potential for low dose toxins in the environment to pass through marine food webs and potentially contribute to marine mammal deaths. This study demonstrates the potential use of blubber from biopsy samples to make inferences about the health of dolphins exposed to mercury. PMID:25137255

  17. Wax Spreading in Paper under Controlled Pressure and Temperature. (United States)

    Hong, Wei; Zhou, Jing; Kanungo, Mandakini; Jia, Nancy; Dinsmore, Anthony D


    This work describes a novel rapid method to fabricate high-resolution paper-based microfluidic devices using wax-ink-based printing. This study demonstrates that both temperature and pressure are important knobs in controlling the device resolution. High-resolution lines and patterns were obtained by heating the paper asymmetrically from one side up to 110 °C while applying pressure up to 49 kPa. Starting with wax lines with an initial width of 130 μm, we achieve a thorough penetration through a 190 μm-thick paper with lateral spreading on the front as narrow as 90 μm. The role of temperature and pressure are systematically studied and compared with the prediction of the Lucas-Washburn equation. We found that the temperature dependence of spreading can be explained by the viscosity change of the wax, according to the Lucas-Washburn equation. The pressure dependence deviates from Lucas-Washburn behavior because of compression of the paper. An optimal condition for achieving full depth penetration of the wax yet minimizing lateral spreading is suggested after exploring various parameters including temperature, pressure, and paper type. These findings could lead to a rapid roll-to-roll fabrication of high-resolution paper-based diagnostic devices.

  18. Characterization of genomic instability in Saccharomyces cerevisiae and engaging teaching strategies described in two curricula (United States)

    Keller, Alexandra P.

    Cancer arises through an accumulation of mutations in the genome. In cancer cells, mutations are frequently caused by DNA rearrangements, which include chromosomal breakages, deletions, insertions, and translocations. Such events contribute to genomic instability, a known hallmark of cancer. To study cycles of chromosomal instability, we are using baker's yeast as a model organism. In yeast, a ChrVII system was previously developed (Admire et al., 2006), in which a disomic yeast strain was used to identify regions of instability on ChrVII. Using this system, a fragile site on the left arm of ChrVII (Admire et al., 2006) was identified and characterized. This study led to insight into mechanisms involved in chromosomal rearrangements and mutations that arise from them as well as to an understanding of mechanisms involved in genomic instability. To further our understanding of genomic instability, I devised a strategy to study instability on a different chromosome (ChrV) (Figure 3), so that we could determine whether lessons learned from the ChrVII system are applicable to other chromosomes, and/or whether other mechanisms of instability could be identified. A suitable strain was generated and analyzed, and our findings suggest that frequencies of instability on the right arm of ChrV are similar to those found in ChrVII. The results from the work in ChrV described in this paper support the idea that the instability found on ChrVII is not an isolated occurrence. My research was supported by an NSF GK-12 grant. The aim of this grant is to improve science education in middle schools, and as part of my participation in this program, I studied and practiced effective science communication methodologies. In attempts to explain my research to middle school students, I collaborated with others to develop methods for explaining genetics and the most important techniques I used in my research. While developing these methods, I learned more about what motivates people to learn

  19. Investigation of a Complex Space-Time Metric to Describe Precognition of the Future (United States)

    Rauscher, Elizabeth A.; Targ, Russell


    For more than 100 years scientists have attempted to determine the truth or falsity of claims that some people are able to describe and experience events or information blocked from ordinary perception. For the past 25 years, the authors of this paper - together with researchers in laboratories around the world — have carried out experiments in remote viewing. The evidence for this mode of perception, or direct knowing of distant events and objects, has convinced us of the validity of these claims. It has been widely observed that the accuracy and reliability of this sensory awareness does not diminish with either electromagnetic shielding, nor with increases in temporal or spatial separation between the percipient and the target to be described. Modern physics describes such a time-and-space independent connection between percipient and target as nonlocal. In this paper we present a geometrical model of space-time, which has already been extensively studied in the technical literature of mathematics and physics. This eight-dimensional metric is known as "complex Minkowski space," and has been shown to be consistent with our present understanding of the equations of Newton, Maxwell, Einstein, and Schrödinger. It also has the interesting property of allowing a connection of zero distance between points in the complex manifold, which appear to be separate from one another in ordinary observation. We propose a model that describes the major elements of experimental parapsychology, and at the same time is consistent with the present highly successful structure of modern physics.

  20. SAPHO: Treatment options including bisphosphonates. (United States)

    Zwaenepoel, Tom; Vlam, Kurt de


    Both the diagnosis and treatment of the syndrome of synovitis, acne, pustulosis, hyperostosis, osteitis (SAPHO) remain difficult. We describe a case series of 21 patients with SAPHO and their response to several pharmacological treatments. Clinical and biochemical data, along with medical imaging, were collected from the medical records of 21 patients, diagnosed as SAPHO during follow-up between 2005 and 2013. Symptoms and inflammatory markers were recorded twice, once at first patient presentation, and once at the end of follow-up. Synovitis, acne, pustulosis, hyperostosis, and osteitis were labeled as defining features. All treatment options were categorized according to their respective responses (full remission, partial remission, and no disease control). There was a female predominance and a median age of 32 years (range: 12-54 years). Median follow-up duration was 45 months (range: 0-188 months). Total prevalence of defining features in this cohort increased for each defining feature during follow-up, except for acne. All patients reached full or partial remission at the end of follow-up. A total of 14 patients were treated with bisphosphonates. Of which 8 of them went into full or partial remission. In our case series, none of the patients had the full presentation of SAPHO at the first consultation. Some presented with symptoms suggestive for psoriatic arthritis. This explains why diagnosis of SAPHO can be challenging. Full remission was induced in the majority of individuals. Bisphosphonates seem to be a noteworthy treatment option. We suggest a prospective placebo-controlled clinical trial with bisphosphonates to confirm this observation. Copyright © 2016. Published by Elsevier Inc.

  1. Business Plan: Paper Recycling Plant


    Ali, Muhammad; Askari, Sana; Salman, Muhammad; Askari, Sheba


    This Business Plan was written for Business Plan competition organized by Ministry of Youth Affairs Government of Pakistan. It explains the paper recycling business, its pros and cons, cost of paper recycling, plant options and feasibility.

  2. Evolution of the scientific paper

    Energy Technology Data Exchange (ETDEWEB)

    Harmon, J.E.


    The first papers reporting original research results in technical periodicals and proceedings appeared in the late 17th century. Since that time, the typical scientific paper has evolved from a fairly simple document, accessible to a general audience, to a much more complex one, aimed at a specialized audience. The purpose of this article is to give an overview of what the first scientific papers were like and how they evolved to their present form and style. To facilitate this discussion, the scientific paper's development has arbitrarily been divided into four stages: the origin and formative years of the scientific paper (1665-1765), emergence of scientific papers written for specialized publications (1765-1865), development of the modem scientific paper (1865-1965), and hyperspecialization and computerization of the modem scientific paper (1965- ).

  3. The Evolution of Paper Money


    Levintal, Oren; Zeira, Joseph


    This paper tells the story of how paper money evolved as a result of lending by banks. While lending commodity money requires holding large reserves of commodity money to ensure liquidity, issuing convertible paper money reduces these costs significantly. The paper also examines the possibility of issuing inconvertible notes and shows that while they further reduce the cost of borrowing they also have adverse effects on the stability of the banking system. As a result, governments often inter...

  4. Device including a contact detector

    DEFF Research Database (Denmark)


    The present invention relates to a probe for determining an electrical property of an area of a surface of a test sample, the probe is intended to be in a specific orientation relative to the test sample. The probe may comprise a supporting body defining a first surface. A plurality of cantilever...... of cantilever arms (12) contacting the surface of the test sample when performing the movement....... arms (12) may extend from the supporting body in co-planar relationship with the first surface. The plurality of cantilever arms (12) may extend substantially parallel to each other and each of the plurality of cantilever arms (12) may include an electrical conductive tip for contacting the area...

  5. Branding Malaysia in Research Papers

    International Nuclear Information System (INIS)

    Shaharum Ramli; Usang, M.D.


    Malaysian research results are world class and its research papers are read all over the world. With this visibility, some elements in the papers should be localized so that the readers know that this is the work of Malaysians. This paper discusses two elements for example statement of authors name and preparation of diagrams. (author)

  6. Materials Best Paper Award 2013


    Ophelia Han; Maryam Tabrizian


    Materials is instituting an annual award to recognize the outstanding papers in the area of materials science and engineering published in Materials. We are pleased to announce the first “Materials Best Paper Award” for 2013. Nominations were selected by the Section Editor-in-Chiefs and Editorial Board members of Materials from all papers published in 2009.

  7. Molecules Best Paper Award 2013. (United States)

    McPhee, Derek J


    Molecules has started to institute a "Best Paper" award to recognize the most outstanding papers in the area of natural products, medicinal chemistry and molecular diversity published in Molecules. We are pleased to announce the second "Molecules Best Paper Award" for 2013.

  8. Describing control

    International Nuclear Information System (INIS)

    Fouet, J.M.; Starynkevitch, B.


    Incremental development and maintenance of large systems imply that control be clearly separated from knowledge. Finding efficient control for a given class of knowledge is itself a matter of expertise, to which knowledge-based methods may and should be applied. We present here two attempts at building root systems that may later be tuned by knowledge engineers, using the semantics of each particular application. These systems are given heuristics in a declarative manner, which they use to control the application of heuristics. Eventually, some heuristics may be used to compile others (or themselves) into efficient pieces of programmed code

  9. The Narragram: A New Way to Describe Children's Recall of Stories (United States)

    Erber, Norman P.; Grant, Lois M.; Leigh, Kathryn; Kenfield, Sara


    Narrative production is often used to measure a child's communicative progress. Typical methods include assessment of quality or content. We propose a new way to describe narrative performance with a simple graph that depicts recall accuracy in relation to the sequence of story details. Children with impaired hearing (9-12 years-old) watched a…

  10. Comparison of macro- and microscopic theories describing multicomponent mass transport in microporous media

    NARCIS (Netherlands)

    Benes, Nieck Edwin; Verweij, H.


    A detailed discussion is presented of three well-known macroscopic theories for describing the mass transport behavior of multicomponent mixtures; these include Fick's law, the Onsager theory of irreversible thermodynamics, and the Maxwell-Stefan theory. The merits and drawbacks of these theories

  11. Computer Software & Intellectual Property. Background Paper. (United States)

    Congress of the U.S., Washington, DC. Office of Technology Assessment.

    This background paper reviews copyright, patent, and trade secret protections as these issues are related to computer software. Topics discussed include current issues regarding legal protection for computer software including the necessity for defining intellectual property, determining what should or should not be protected, commerical piracy,…

  12. Scientific projection paper for genetics

    International Nuclear Information System (INIS)

    Grahn, D.


    This Projection Paper is in two parts. The first is a general discussion of current knowledge and the present basis of radiation protection policy, the rather dismal prospects in the foreseeable future of getting realistic estimates of the human impact of radiation-induced mutation, and some general remarks about radiation standards and research strategy. The second part deals with specific research projects that might increase basic knowledge and narrow the gap between what is needed and what is known. We should emphasize at the outset that, of all environmental hazards, radiation is one whose genetic effects are best understood. There is good information on the dose-response curve, on the effects of dose rate and fractionation, and on the differential sensitivity of different ages, sexes and cell stages. This includes a great deal of knowledge of one organism closely related to man, the mouse. This information has been the basis for risk assessment and for safety standards that are widely accepted as solidly based

  13. The colour of pain: can patients use colour to describe osteoarthritis pain? (United States)

    Wylde, Vikki; Wells, Victoria; Dixon, Samantha; Gooberman-Hill, Rachael


    The aim of the present study was to explore patients' views on the acceptability and feasibility of using colour to describe osteoarthritis (OA) pain, and whether colour could be used to communicate pain to healthcare professionals. Six group interviews were conducted with 17 patients with knee OA. Discussion topics included first impressions about using colour to describe pain, whether participants could associate their pain with colour, how colours related to changes to intensity and different pain qualities, and whether they could envisage using colour to describe pain to healthcare professionals. The group interviews indicated that, although the idea of using colour was generally acceptable, it did not suit all participants as a way of describing their pain. The majority of participants chose red to describe high-intensity pain; the reasons given were because red symbolized inflammation, fire, anger and the stop signal in a traffic light system. Colours used to describe the absence of pain were chosen because of their association with positive emotional feelings, such as purity, calmness and happiness. A range of colours was chosen to represent changes in pain intensity. Aching pain was consistently identified as being associated with colours such as grey or black, whereas sharp pain was described using a wider selection of colours. The majority of participants thought that they would be able to use colour to describe their pain to healthcare professionals, although issues around the interpretability and standardization of colour were raised. For some patients, using colour to describe their pain experience may be a useful tool to improve doctor-patient communication. Copyright © 2013 John Wiley & Sons, Ltd.

  14. Flexible and foldable paper-substrate thermoelectric generator (teg)

    KAUST Repository

    Rojas, Jhonathan Prieto


    Flexible and foldable paper-substrate thermoelectric generators (TEGs) and methods for making the paper-substrate TEGs are disclosed. A method includes depositing a plurality of thermocouples in series on a paper substrate to create a paper-substrate TEG, wherein the plurality of thermocouples is deposited between two contact points of the paper-substrate TEG. The method may also include setting the power density and maximum achievable temperature gradient of the paper-substrate TEG by folding the paper-substrate TEG. A paper-substrate TEG apparatus may include a paper substrate and a plurality of thermocouples deposited in series on the paper substrate between two contact points of the paper-substrate TEG, wherein the power density and maximum achievable temperature gradient of the paper-substrate TEG is set by folding the paper-substrate TEG.

  15. Should Broca's area include Brodmann area 47? (United States)

    Ardila, Alfredo; Bernal, Byron; Rosselli, Monica


    Understanding brain organization of speech production has been a principal goal of neuroscience. Historically, brain speech production has been associated with so-called Broca’s area (Brodmann area –BA- 44 and 45), however, modern neuroimaging developments suggest speech production is associated with networks rather than with areas. The purpose of this paper was to analyze the connectivity of BA47 ( pars orbitalis) in relation to language . A meta-analysis was conducted to assess the language network in which BA47 is involved. The Brainmap database was used. Twenty papers corresponding to 29 experimental conditions with a total of 373 subjects were included. Our results suggest that BA47 participates in a “frontal language production system” (or extended Broca’s system). The BA47  connectivity found is also concordant with a minor role in language semantics. BA47 plays a central role in the language production system.

  16. Call for Papers: Cavity QED (United States)

    Lange, W.; Gerard, J.-M.


    Cavity QED interactions of light and matter have been investigated in a wide range of systems covering the spectrum from microwaves to optical frequencies, using media as diverse as single atoms and semiconductors. Impressive progress has been achieved technologically as well as conceptually. This topical issue of Journal of Optics B: Quantum and Semiclassical Optics is intended to provide a comprehensive account of the current state of the art of cavity QED by uniting contributions from researchers active across this field. As Guest Editors of this topical issue, we invite manuscripts on current theoretical and experimental work on any aspects of cavity QED. The topics to be covered will include, but are not limited to: bulletCavity QED in optical microcavities bulletSemiconductor cavity QED bulletQuantum dot cavity QED bulletRydberg atoms in microwave cavities bulletPhotonic crystal cavity QED bulletMicrosphere resonators bulletMicrolasers and micromasers bulletMicrodroplets bulletDielectric cavity QED bulletCavity QED-based quantum information processing bulletQuantum state engineering in cavities The DEADLINE for submission of contributions is 31 July 2003 to allow the topical issue to appear in about February 2004. All papers will be peer-reviewed in accordance with the normal refereeing procedures and standards of Journal of Optics B: Quantum and Semiclassical Optics. Advice on publishing your work in the journal may be found at Submissions should ideally be in either standard LaTeX form or Microsoft Word. There are no page charges for publication. In addition to the usual 50 free reprints, the corresponding author of each paper published will receive a complimentary copy of the topical issue. Contributions to the topical issue should if possible be submitted electronically at or by e-mail to Authors unable to submit online or by e-mail may send hard copy contributions (enclosing the

  17. Negative binomial distribution to describe the presence of Trifur tortuosus (Crustacea: Copepoda in Merluccius gayi (Osteichthyes: Gadiformes

    Directory of Open Access Journals (Sweden)

    Giselle Garcia-Sepulveda


    Full Text Available This paper describes the frequency and number of Trifur tortuosus in the skin of Merluccius gayi, an important economic resource in Chile. Analysis of a spatial distribution model indicated that the parasites tended to cluster. Variations in the number of parasites per host can be described by a negative binomial distribution. The maximum number of parasites observed per host was one, similar patterns was described for other parasites in Chilean marine fishes.

  18. NANOTECHNOLOGY WHITE PAPER | Science Inventory | US ... (United States)

    Nanotechnology is the science of manipulating materials at the atomic and molecular level to develop new or enhanced materials and products. In December 2004, EPA’s Science Policy Council created a cross-Agency workgroup to identify and describe the issues EPA must address to ensure protection of human health and the environment as this new technology is developed. The draft white paper on nanotechnology is the product of the workgroup. The draft white paper describes the technology, and provides a discussion of the potential environmental benefits of nanotechnology and its applications that can foster sustainable use of resources. Risk management issues and the Agency’s statutory mandates are outlined, followed by an extensive discussion of risk assessment issues. The paper identifies research needs for both environmental applications and implications of nanotechnology and concludes with recommendations on next steps for addressing science policy issues and research needs. Supplemental information is provided in a number of appendices. The Agency will use the white paper to address research needs and risk assessment issues concerning nanotechnology. The draft white paper will undergo independent expert review, which will be conducted in the February time frame. All public comments received by January 31, 2006 will be submitted to the external review panel for their consideration. Comments received beyond that time will be considered by EPA. Follo

  19. Improving paper books: searchable books


    Chong, Ming Ki; Kawsar, Fahim


    Much of today’s information is digitised. Representation of information is increasingly becoming digital. Yet, paper books remain popular, as many readers prefer the reading experience that paper books provide, which digital interfaces cannot. In this paper, our aim is to improve users’ reading experience by enhancing books with digital functionalities. We conducted a user survey study to identify features that users desire. The study highlights one specific feature – content searching within ...

  20. Nineteen papers on algebraic semigroups

    CERN Document Server

    Aizenshtat, A Ya; Podran, N E; Ponizovskii, IS; Shain, BM


    This volume contains papers selected by leading specialists in algebraic semigroups in the U.S., the United Kingdom, and Australia. Many of the papers strongly influenced the development of algebraic semigroups, but most were virtually unavailable outside the U.S.S.R. Written by some of the most prominent Soviet researchers in the field, the papers have a particular emphasis on semigroups of transformations. Boris Schein of the University of Arkansas is the translator.

  1. Middle School Mathematics PD Study: Description of the PD Intervention. Paper #2 (United States)

    Walters, Kirk; Garet, Michael; Leinwand, Steve


    This paper describes the PD program that was delivered during the first year of the study. The main goal of the intervention was to increase teachers' capability to teach positive rational number topics effectively. The program included a 3-day summer institute (18 hours per teacher), five 1-day seminars held during the school year (30 hours per…

  2. Writing a clinical research paper. (United States)

    Ajao, O G


    A well-known unwritten law in institutions of higher learning is that of "Publish or perish". The duties of a University teacher, in order of priority are teaching, research and service. Reasons for writing clinical research papers are to get promoted, to get research grants and to make known, one's findings in order to improve patients' care. Writing papers is also a means of delivering continuous education, therefore publication is essential for any one pursuing an academic career. Research papers can be in the form of case reports, retrospective studies, prospective studies and laboratory or animal research. Two popular formats of writing papers are: The Vancouver Style and the Harvard System.

  3. English for writing research papers

    National Research Council Canada - National Science Library

    Wallwork, Adrian


    ... points when you write more papers in the future. The useful phrases in Chap. 19 will help you to structure your paper and give you an indication of the typical coverage of each section. I have written many papers before. Will I still learn something from this book? If you have ever had a paper rejected due to poor English, poor structure or poor readability, then this book will certainly help you. What are the three most important things I will learn from this book? This book is based on three fund...

  4. Radiation treatment of waste papers

    International Nuclear Information System (INIS)

    Kumakura, Minoru; Kaetsu, Isao


    The effect of irradiation on enzymatic hydrolysis of waste papers was studied. The sugar yield increased with increasing irradiation dose. In irradiation of deligninized paper, no acceleration of enzymatic hydrolysis was observed. Degradation of cellulose molecules in paper by irradiation was examined by measurements of degree of polymerization and of potential reducing sugar. It was found in enzymatic hydrolysis that oligosaccharides such as celobiose were produced by irradiation. In irradiation of waste papers in catbon dioxide atmosphere, the glucose yield during enzymatic hydrolysis increased with increasing carbon dioxide gas pressure. (author)

  5. New Model to describe the interaction of slow neutrons with solid deuterium

    International Nuclear Information System (INIS)

    Granada, J.R


    A new scattering kernel to describe the interaction of slow neutrons with solid Deuterium was developed. The main characteristics of that system are contained in the formalism, including the lattice s density of states, the Young-Koppel quantum treatment of the rotations, and the internal molecular vibrations. The elastic processes involving coherent and incoherent contributions are fully described, as well as the spin-correlation effects. The results from the new model are compared with the best available experimental data, showing very good agreement. [es

  6. Recent Advances in Paper-Based Sensors

    Directory of Open Access Journals (Sweden)

    Edith Chow


    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.

  7. Parametric methods of describing and extrapolating the characteristics of long-term strength of refractory materials

    International Nuclear Information System (INIS)

    Tsvilyuk, I.S.; Avramenko, D.S.


    This paper carries out the comparative analysis of the suitability of parametric methods for describing and extrapolating the results of longterm tests on refractory materials. Diagrams are presented of the longterm strength of niobium based alloys tested in a vacuum of 1.3 X 10 -3 Pa. The predicted values and variance of the estimate of endurance of refractory alloys are presented by parametric dependences. The longterm strength characteristics can be described most adequately by the Manson-Sakkop and Sherby-Dorn methods. Several methods must be used to ensure the reliable extrapolation of the longterm strength characteristics to the time period an order of magnitude longer than the experimental data. The most suitable method cannot always be selected on the basis of the correlation ratio

  8. A mathematical model describes the malignant transformation of low grade gliomas: Prognostic implications.

    Directory of Open Access Journals (Sweden)

    Magdalena U Bogdańska

    Full Text Available Gliomas are the most frequent type of primary brain tumours. Low grade gliomas (LGGs, WHO grade II gliomas may grow very slowly for the long periods of time, however they inevitably cause death due to the phenomenon known as the malignant transformation. This refers to the transition of LGGs to more aggressive forms of high grade gliomas (HGGs, WHO grade III and IV gliomas. In this paper we propose a mathematical model describing the spatio-temporal transition of LGGs into HGGs. Our modelling approach is based on two cellular populations with transitions between them being driven by the tumour microenvironment transformation occurring when the tumour cell density grows beyond a critical level. We show that the proposed model describes real patient data well. We discuss the relationship between patient prognosis and model parameters. We approximate tumour radius and velocity before malignant transformation as well as estimate the onset of this process.

  9. Moral Cognitivism | Lillehammer | Philosophical Papers

    African Journals Online (AJOL)

    The paper explicates a set of criteria the joint satisfaction of which is taken to qualify moral judgements as cognitive. The paper examines evidence that some moral judgements meet these criteria, and relates the resulting conception of moral judgements to ongoing controversies about cognitivism in ethics. Philosophical ...

  10. Ten papers on complex analysis

    CERN Document Server

    Arakelyan, N U; Krushkal', S L; Gutlyanskii, V Ya; Kudyavin, V S


    The papers in this volume cover both one-variable and several-variable problems. An example of the former is a fifty-year-old classic on conformal mapping by M. A. Lavrent€´ev, while the latter is represented by a paper on the tangent complex of an analytic space by V. P. Palamodov.

  11. Recycling of Paper and Cardboard

    DEFF Research Database (Denmark)

    Christensen, Thomas Højlund; Damgaard, Anders


    Paper and cardboard are produced from pulp derived from plant fibers, primarily wood. Paper and cardboard is used for many different products, such as for packaging material, newsprint and advertisements. Most of these products have very short lifetimes and thus constitute a major fraction of most...

  12. Street Papers, Work, and Begging

    DEFF Research Database (Denmark)

    Cockburn, Patrick Joseph


    Street papers are publications produced specifically for sale by the homeless and other vulnerable people in many countries around the world. Their social status is, however, often conspicuously unstable: ‘Get a job!’ has been reported as a common insult addressed to vendors, and street paper...

  13. Working Paper on Social capital

    DEFF Research Database (Denmark)

    Lassen Hanan, Anne

    This paper outlines the major schools within social capital theory. Contemporary authors such as Coleman, Putnam and Bourdieu are elaborated on. The paper also presents a non-exhaustive review on studies of social capital. Furthermore, a criticial discussion on social capital is reviewed, before...

  14. IDEA papers special number 1

    International Nuclear Information System (INIS)

    Mercadie, J.L.


    The Information network on the Economic Development in Aquitaine (IDEA) aims to collect and spread the environmental information concerning the Aquitaine, in order to implement an observatory of the regional environment and of the sustainable development. The IDEA papers provides information such as, meeting, Internet addresses and programs. This paper is specially devoted to the environment. (A.L.B.)

  15. Preparing Students to Write a Professional Philosophy of Recreation Paper (United States)

    Stevens, Cheryl; Schneider, Paige P.; Johnson, Corey W.


    This paper describes a process for guiding students through the writing of a Professional Philosophy of Recreation Paper and a one-page philosophy statement suitable for use in students' professional portfolios. The authors describe how the review of recreation education literature, scholarship on teaching and learning, and assessment of student…

  16. A standard protocol for describing individual-based and agent-based models (United States)

    Grimm, Volker; Berger, Uta; Bastiansen, Finn; Eliassen, Sigrunn; Ginot, Vincent; Giske, Jarl; Goss-Custard, John; Grand, Tamara; Heinz, Simone K.; Huse, Geir; Huth, Andreas; Jepsen, Jane U.; Jorgensen, Christian; Mooij, Wolf M.; Muller, Birgit; Pe'er, Guy; Piou, Cyril; Railsback, Steven F.; Robbins, Andrew M.; Robbins, Martha M.; Rossmanith, Eva; Ruger, Nadja; Strand, Espen; Souissi, Sami; Stillman, Richard A.; Vabo, Rune; Visser, Ute; DeAngelis, Donald L.


    Simulation models that describe autonomous individual organisms (individual based models, IBM) or agents (agent-based models, ABM) have become a widely used tool, not only in ecology, but also in many other disciplines dealing with complex systems made up of autonomous entities. However, there is no standard protocol for describing such simulation models, which can make them difficult to understand and to duplicate. This paper presents a proposed standard protocol, ODD, for describing IBMs and ABMs, developed and tested by 28 modellers who cover a wide range of fields within ecology. This protocol consists of three blocks (Overview, Design concepts, and Details), which are subdivided into seven elements: Purpose, State variables and scales, Process overview and scheduling, Design concepts, Initialization, Input, and Submodels. We explain which aspects of a model should be described in each element, and we present an example to illustrate the protocol in use. In addition, 19 examples are available in an Online Appendix. We consider ODD as a first step for establishing a more detailed common format of the description of IBMs and ABMs. Once initiated, the protocol will hopefully evolve as it becomes used by a sufficiently large proportion of modellers.

  17. A revised multi-Fickian moisture transport model to describe non-Fickian effects in wood

    DEFF Research Database (Denmark)

    Frandsen, Henrik Lund; Damkilde, Lars; Svensson, Staffan


    This paper presents a study and a refinement of the sorption rate model in a so-called multi-Fickian or multi-phase model. This type of model describes the complex moisture transport system in wood, which consists of separate water vapor and bound-water diffusion interacting through sorption...... sorption allow a simplification of the system to be modeled by a single Fickian diffusion equation. To determine the response of the system, the sorption rate model is essential. Here the function modeling the moisture-dependent adsorption rate is investigated based on existing experiments on thin wood...... conditions for the model are discussed, since discrepancies from corresponding models of moisture transport in paper products have been found. ©2007 by Walter de Gruyter....

  18. A Revised Multi-Fickian Moisture Transport Model To Describe Non-Fickian Effects In Wood

    DEFF Research Database (Denmark)

    Frandsen, Henrik Lund; Svensson, Staffan; Damkilde, Lars


    This paper presents a study and a refinement of the sorption rate model in a so-called multi-Fickian or multiphase model. This type of model describes the complex moisture transport system in wood, which consists of separate water vapor and bound-water diffusion interacting through sorption...... sorption allow a simplification of the system to be modeled by a single Fickian diffusion equation. To determine the response of the system, the sorption rate model is essential. Here the function modeling the moisture-dependent adsorption rate is investigated based on existing experiments on thin wood...... conditions for the model are discussed, since discrepancies from corresponding models of moisture transport in paper products have been found....

  19. Reconciling taxonomy and phylogenetic inference: formalism and algorithms for describing discord and inferring taxonomic roots

    Directory of Open Access Journals (Sweden)

    Matsen Frederick A


    Full Text Available Abstract Background Although taxonomy is often used informally to evaluate the results of phylogenetic inference and the root of phylogenetic trees, algorithmic methods to do so are lacking. Results In this paper we formalize these procedures and develop algorithms to solve the relevant problems. In particular, we introduce a new algorithm that solves a "subcoloring" problem to express the difference between a taxonomy and a phylogeny at a given rank. This algorithm improves upon the current best algorithm in terms of asymptotic complexity for the parameter regime of interest; we also describe a branch-and-bound algorithm that saves orders of magnitude in computation on real data sets. We also develop a formalism and an algorithm for rooting phylogenetic trees according to a taxonomy. Conclusions The algorithms in this paper, and the associated freely-available software, will help biologists better use and understand taxonomically labeled phylogenetic trees.

  20. Paper reutilization to manufacture plasterboard

    International Nuclear Information System (INIS)

    Calixto, M.K.; Medeiros, I.A.; Lima, R.C.; Araujo, Y.C.F.; Lima, E.M.C. de


    The changes in the planet have accelerated the discussion about environmental preservation and the pursuit for sustainable solutions aiming the human development. In the civil construction, the residue recovery, not only contribute to sustainability but also relieves the consumption of raw material and for all this the search for new products in this new twist is in the center of global technological research. The goal of this work is to obtain plasterboard incorporating discarded paper in the educational environment. In this study, the plaster was characterized initially by X-ray diffraction and thermals analysis (TG e DTA). It was prepared a paste of plaster and processed paper varying the paper amount in two proportions with 10% and 50% respectively, and was utilized the plaster/water factor equals to 0,7. The plaster - paper mixtures were characterized about the setting time and compressive strength. The results indicated that the increase in paper content led to the decreased resistance. (author)

  1. Other relevant numerical modelling papers

    International Nuclear Information System (INIS)

    Chartier, M.


    The ocean modelling is a rapidly evolving science and a large number of results have been published. Several categories of papers are of particular interest for this review: the papers published by the international atomic institutions, such as the NEA (for the CRESP or Subseabed Programs), the IAEA (for example the Safety Series, the Technical Report Series or the TECDOC), and the ICRP, and the papers concerned by more fundamental research, which are published in specific scientific literature. This paper aims to list some of the most relevant publications for the CRESP purposes. It means by no way to be exhaustive, but informative on the incontestable progress recently achieved in that field. One should note that some of these papers are so recent that their final version has not yet been published

  2. Mathematical model describing the thyroids-pituitary axis with distributed time delays in hormone transportation (United States)

    Neamţu, Mihaela; Stoian, Dana; Navolan, Dan Bogdan


    In the present paper we provide a mathematical model that describe the hypothalamus-pituitary-thyroid axis in autoimmune (Hashimoto's) thyroiditis. Since there is a spatial separation between thyroid and pituitary gland in the body, time is needed for transportation of thyrotropin and thyroxine between the glands. Thus, the distributed time delays are considered as both weak and Dirac kernels. The delayed model is analyzed regarding the stability and bifurcation behavior. The last part contains some numerical simulations to illustrate the effectiveness of our results and conclusions.

  3. Investigation of statistical relationships between quantities describing bone architecture, its fractal dimensions and mechanical properties. (United States)

    Cichański, Artur; Nowicki, Krzysztof; Mazurkiewicz, Adam; Topoliński, Tomasz


    The paper presents linear, logarithmic and exponential regression tabecular bone indices, fractal dimensions and strength. The analysis of the above parameters was supported by determining non-parametric correlation coefficients: Spearman's ρ, gamma and Kendall's τ. The principal components' analysis (PCA) was also performed in order to reduce the number of indices describing the variance in the data set. The analysis showed the most independent indices: lacunarity (λm, λmin, λmax), BMD, Conn.D., SMI, DA, ρA and age.

  4. Orthonormal polynomials describing polarization aberration for M-fold optical systems. (United States)

    Xu, Xiangru; Huang, Wei; Xu, Mingfei


    Polarization aberration (PA) is a serious issue that affects imaging quality for optical systems with high numerical aperture. Numerous studies have focused on the distribution rule of PA on the pupil, but the field remains poorly studied. We previously developed an orthonormal set of polynomials to reveal the pupil and field dependences of PA in rotationally symmetric optical systems. However, factors, such as intrinsic birefringence of cubic crystalline material in deep ultraviolet optics and tolerance, break the rotational symmetry of PA. In this paper, we extend the polynomials from rotationally symmetric to M-fold to describe the PA of M-fold optical systems. Two examples are presented to verify the polynomials.

  5. Accuracy Assessment for Cad Modeling of Freeform Surface Described by Equation

    Directory of Open Access Journals (Sweden)

    Golba Grzegorz


    Full Text Available This paper presents the results of comparative analysis of modeling accuracy the freeform surface constructed by using a variety of algorithms for surface modeling. Also determined the accuracy of mapping the theoretical freeform surface described by mathematical equation. To model surface objects used: SolidWorks 2012, CATIA v5 and Geomagic Studio 12. During the design process of CAD models were used: profile curves, fitting parametric surface and polygonal mesh. To assess the accuracy of the CAD models used Geomagic Qualify 12. On the basis of analyse defined the scope of application of each modeling techniques depending on the nature of the constructed object.

  6. Collected papers of V K Patodi

    CERN Document Server

    Atiyah, Michael Francis


    Vijay Kumar Patodi was a brilliant Indian mathematicians who made, during his short life, fundamental contributions to the analytic proof of the index theorem and to the study of differential geometric invariants of manifolds. This set of collected papers edited by Prof M Atiyah and Prof Narasimhan includes his path-breaking papers on the McKean-Singer conjecture and the analytic proof of Riemann-Roch-Hirzebruch theorem for Kähler manifolds. It also contains his celebrated joint papers on the index theorem and the Atiyah-Patodi-Singer invariant.

  7. How do older people describe their sensory experiences of the natural world? A systematic review of the qualitative evidence. (United States)

    Orr, Noreen; Wagstaffe, Alexandra; Briscoe, Simon; Garside, Ruth


    Despite the increased scholarly interest in the senses and sensory experiences, the topic of older people's sensory engagement with nature is currently under researched. This paper reviews and synthesises qualitative research evidence about how older people, including those living with dementia, describe their sensory engagement with the natural world. Ten databases were searched from 1990 to September 2014: MEDLINE (Ovid), MEDLINE-in-Process (Ovid), PsycINFO (Ovid), CINAHL (EBSCO), GreenFILE (EBSCO), ProQuest Sociology, ASSIA (ProQuest), International Bibliography of the Social Sciences (ProQuest); HMIC (Ovid); Social Policy and Practice (Ovid). Forward and backward citation chasing of included articles was conducted; 20 organizations were contacted to identify unpublished reports. Screening was undertaken independently by two reviewers. Twenty seven studies were included. Thematic analysis revealed that descriptions of sensory experiences are encompassed within six themes: descriptions from 'the window'; sensory descriptions that emphasise vision; descriptions of 'being in nature'; descriptions of 'doing in nature'; barriers to sensory engagement; and meanings of being and doing in nature. Older people derive considerable pleasure and enjoyment from viewing nature, being and doing in nature which, in turn has a positive impact on their wellbeing and quality of life. Future research could usefully explore how sensory engagement with nature could be used to stimulate reminiscences of places and people, and evoke past sensory experiences to enrich everyday life and maintain a sense of self. The protocol was registered with PROSPERO ( CRD42015020736 ).

  8. Provenance of things - describing geochemistry observation workflows using PROV-O (United States)

    Cox, S. J. D.; Car, N. J.


    Geochemistry observations typically follow a complex preparation process after sample retrieval from the field. Description of these are required to allow readers and other data users to assess the reliability of the data produced, and to ensure reproducibility. While laboratory notebooks are used for private record-keeping, and laboratory information systems (LIMS) on a facility basis, this data is not generally published, and there are no standard formats for transfer. And while there is some standardization of workflows, this is often scoped to a lab, or an instrument. New procedures and workflows are being developed continually - in fact this is a key expectation in the development of the science. Thus formalization of the description of sample preparation and observations must be both rigorous and flexible. We have been exploring the use of the W3C Provenance model (PROV) to capture complete traces, including both the real world things and the data generated. PROV has a core data model that distinguishes between entities, agents and activities involved in producing a piece of data or thing in the world. While the design of PROV was primarily conditioned by stories concerning information resources, application is not restricted to the production of digital or information assets. PROV allowing a comprehensive trace of predecessor entities and transformations at any level of detail. In this paper we demonstrate the use of PROV for describing specimens managed for scientific observations. Two examples are considered: a geological sample which undergoes a typical preparation process for measurements of the concentration of a particular chemical substance, and the collection, taxonomic classification and eventual publication of an insect specimen. PROV enables the material that goes into the instrument to be linked back to the sample retrieved in the field. This complements the IGSN system, which focuses on registration of field sample identity to support the

  9. Modeling heart rate variability including the effect of sleep stages (United States)

    Soliński, Mateusz; Gierałtowski, Jan; Żebrowski, Jan


    We propose a model for heart rate variability (HRV) of a healthy individual during sleep with the assumption that the heart rate variability is predominantly a random process. Autonomic nervous system activity has different properties during different sleep stages, and this affects many physiological systems including the cardiovascular system. Different properties of HRV can be observed during each particular sleep stage. We believe that taking into account the sleep architecture is crucial for modeling the human nighttime HRV. The stochastic model of HRV introduced by Kantelhardt et al. was used as the initial starting point. We studied the statistical properties of sleep in healthy adults, analyzing 30 polysomnographic recordings, which provided realistic information about sleep architecture. Next, we generated synthetic hypnograms and included them in the modeling of nighttime RR interval series. The results of standard HRV linear analysis and of nonlinear analysis (Shannon entropy, Poincaré plots, and multiscale multifractal analysis) show that—in comparison with real data—the HRV signals obtained from our model have very similar properties, in particular including the multifractal characteristics at different time scales. The model described in this paper is discussed in the context of normal sleep. However, its construction is such that it should allow to model heart rate variability in sleep disorders. This possibility is briefly discussed.

  10. Collected papers of P. L. Kapitza

    CERN Document Server

    Kapitsa, Petr Leonidovich

    Collected Papers of P. L. Kapitza, Volume I compiles the scientific papers written between 1916 and 1934 by Piotr Leonidovich Kapitza, a leading Soviet physicist and Nobel laureate. This book begins by introducing the life and career of P. L. Kapitza, which includes his studies and investigations of nuclear physics, strong magnetic fields, liquefaction, liquid helium, and high-power electronics. Other topics discussed include electron inertia in molecular ampere currents; Koch recording microphotometer; metallic conductivity and its change in a magnetic field; and methods of experimenting in s

  11. Fundamental papers in wavelet theory

    CERN Document Server

    Walnut, David F


    This book traces the prehistory and initial development of wavelet theory, a discipline that has had a profound impact on mathematics, physics, and engineering. Interchanges between these fields during the last fifteen years have led to a number of advances in applications such as image compression, turbulence, machine vision, radar, and earthquake prediction. This book contains the seminal papers that presented the ideas from which wavelet theory evolved, as well as those major papers that developed the theory into its current form. These papers originated in a variety of journals from differ

  12. Quantum interaction. Revised selected papers

    International Nuclear Information System (INIS)

    Song, Dawei; Zhang, Peng; Wang, Lei; Arafat, Sachi


    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.)

  13. Understanding How College Students Describe Art: An Analysis on Art Education in China

    Directory of Open Access Journals (Sweden)

    Hong Wang


    Full Text Available This study aims to explore how Chinese college students appreciate art as reflected in their descriptions of an artwork. Students’ descriptions were defined by a content analysis with respect to opinions and facts, art elements and principles. A questionnaire was also used to investigate students’ attitudes toward art education. 85 students who were divided into four groups participated in the study. The results showed: (1 participants were more familiar with art appreciation than art elements and principles; (2 there was a slight but no significant difference between students’ describing facts and opinions; (3 participants had significantly higher scores on describing art elements than describing art principles; (4 among all participants with regard to all elements and principles, there was a significant difference of describing space between students of art education and students of music education, and also, there was a significant difference of describing value between Chinese language students and other students. The results suggested that participants, including those of art education, had poor knowledge and strategies of understanding art, implying art education in China may have ended up with failure.

  14. Predicting the importance of current papers.

    Energy Technology Data Exchange (ETDEWEB)

    Klavans, Richard (SciTech Strategies, Inc., Berwyn, PA); Boyack, Kevin W.


    This article examines how well one can predict the importance of a current paper (a paper that is recently published in the literature). We look at three factors--journal importance, reference importance and author reputation. Citation-based measures of importance are used for all variables. We find that journal importance is the best predictor (explaining 22.3% out of a potential 29.1% of the variance in the data), and that this correlation value varies significantly by discipline. Journal importance is a better predictor of citation in Computer Science than in any other discipline. While the finding supports the present policy of using journal impact statistics as a surrogate for the importance of current papers, it calls into question the present policy of equally weighting current documents in text-based analyses. We suggest that future researchers take into account the expected importance of a document when attempting to describe the cognitive structure of a field.

  15. White Paper on Research Data Service Discoverability

    Directory of Open Access Journals (Sweden)

    Costantino Thanos


    Full Text Available This White Paper reports the outcome of a Workshop on “Research Data Service Discoverability” held in the island of Santorini (GR on 21–22 April 2016 and organized in the context of the EU funded Project “RDA-E3”. The Workshop addressed the main technical problems that hamper an efficient and effective discovery of Research Data Services (RDSs based on appropriate semantic descriptions of their functional and non-functional aspects. In the context of this White Paper, by RDSs are meant those data services that manipulate/transform research datasets for the purpose of gaining insight into complicated issues. In this White Paper, the main concepts involved in the discovery process of RDSs are defined; the RDS discovery process is illustrated; the main technologies that enable the discovery of RDSs are described; and a number of recommendations are formulated for indicating future research directions and making an automatic RDS discovery feasible.

  16. Paper Moccasins: Stepping toward Learning (United States)

    Sweeney, Debra


    This article presents an art project inspired by the Indian artisanship. In this article, the author describes how her fourth-graders made three-dimensional, authentic looking and meaningful papier-mache moccasins.

  17. Using virtual reality technology to include field operators in simulation and training

    International Nuclear Information System (INIS)

    Nystad, E.; Strand, S.


    By using virtual reality technology, field operators can be included in simulator training. A study has been performed where field operators could perform their activities in a virtual plant and communicate with a control room operator who was placed in a physical control room simulator. This paper describes the use of VR technology in the study and how the operators experienced interacting with the virtual plant. (author)

  18. An inertial effect in satellite motion not described by the current IERS conventions (United States)

    Kudryavtsev, S. M.


    We recall a known inertial effect in satellite motion caused by the indirect acceleration of the center of integration (the central planet) due to the oblateness of the planet and an attracting third-body. As estimated, the effect leads to perturbations in satellite motion to be well detectable by the modern tools of measuring the satellite orbital parameters. However, the effect is not described by the current IERS Conventions (2003); we suggest to include it to the future IERS Conventions (2010).

  19. Genealogical Trees of Scientific Papers. (United States)

    Waumans, Michaël Charles; Bersini, Hugues


    Many results have been obtained when studying scientific papers citations databases in a network perspective. Articles can be ranked according to their current in-degree and their future popularity or citation counts can even be predicted. The dynamical properties of such networks and the observation of the time evolution of their nodes started more recently. This work adopts an evolutionary perspective and proposes an original algorithm for the construction of genealogical trees of scientific papers on the basis of their citation count evolution in time. The fitness of a paper now amounts to its in-degree growing trend and a "dying" paper will suddenly see this trend declining in time. It will give birth and be taken over by some of its most prevalent citing "offspring". Practically, this might be used to trace the successive published milestones of a research field.

  20. Stellenbosch Papers in Linguistics Plus

    African Journals Online (AJOL)

    Stellenbosch Papers in Linguistics Plus. Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives · Journal Home > Vol 10 (1985) >. Log in or Register to get access to full text downloads.

  1. Stellenbosch Papers in Linguistics Plus

    African Journals Online (AJOL)

    Stellenbosch Papers in Linguistics Plus. Journal Home · ABOUT · Advanced Search · Current Issue · Archives · Journal Home > Vol 10 (1985) >. Log in or Register to get access to full text downloads.

  2. Stellenbosch Papers in Linguistics Plus

    African Journals Online (AJOL)

    Stellenbosch Papers in Linguistics Plus. Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives · Journal Home > Vol 47 (2015) >. Log in or Register to get access to full text downloads.

  3. The Mystery of Photographic Paper (United States)

    Girvin, Robert


    Do your beginning photographic students ever wonder why photographic paper reacts the way it does? One way that this question can be answered is by making a photogram. Article explained the steps necessary for making a photogram. (Author/RK)

  4. Stellenbosch Papers in Linguistics Plus

    African Journals Online (AJOL)

    Stellenbosch Papers in Linguistics Plus. Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives · Journal Home > Vol 27 (1995) >. Log in or Register to get access to full text downloads.

  5. Stellenbosch Papers in Linguistics Plus

    African Journals Online (AJOL)

    Stellenbosch Papers in Linguistics Plus. Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives · Journal Home > Vol 42 (2013) >. Log in or Register to get access to full text downloads.

  6. Stellenbosch Papers in Linguistics Plus

    African Journals Online (AJOL)

    Stellenbosch Papers in Linguistics Plus. Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives · Journal Home > Vol 38 (2009) >. Log in or Register to get access to full text downloads.

  7. Book Review | Pleasants | Philosophical Papers

    African Journals Online (AJOL)

    Abstract. Judging and Understanding: Essays on Free Will, Narrative, Meaning and the Ethical Limits of Condemnation, edited by Pedro Alexis Tabensky, Ashgate 2006. Philosophical Papers Vol. 37 (1) 2008: pp. 177-184 ...

  8. A catalogue of described genera and species of microsporidians parasitic in fish. (United States)

    Lom, Jirí


    A complete list of microsporidians parasitic in fish is presented; in each species, the host(s), site of infection and the known geographical distribution is given. Species of a total of 14 genera can be found in fish hosts. These genera do not occur in other hosts and include 80 named species plus 29 records only designated as 'sp.' The collective group Microsporidium includes 15 species plus 30 records only designated as 'sp.' Described species with incorrect generic assignment number seven species and there are six hyperparasitic species infecting other fish parasites. Thus the total number of microsporidians which may be encountered in fish is 108 named and 59 innominate species.

  9. Describing the processes of propagation and eliminating wildfires with the use of agent models

    Directory of Open Access Journals (Sweden)

    G. A. Dorrer


    Full Text Available A new method of describing the processes of propagation and elimination of wildfires on the basis of agent-based modeling is proposed. The main structural units of the creation of such models are the classes of active objects (agents. Agent approach, combined with Geographic Information Systems (GIS can effectively describe the interaction of a large number of participants in the process to combat wildfires: fire spreading, fire crews, mechanization, aerial means and other. In this paper we propose a multi-agent model to predict the spread of wildfire edge and simulate the direct method of extinguishing a ground fire with non-mechanized crews. The model consist with two classes of agents, designated A and B. The burning fire edge is represented as a chain of A-agents, each of which simulates the burning of an elementary portion of vegetation fuel. Fire front movement (moving the A-agent described by the Hamilton-Jacobi equation with using the indicatrises of normal front rate of spread (figurotris. The configuration of the front calculated on basis the algorithm of mobile grids. Agents other type, B-agents, described extinguishing process; they move to the agents of A type and act on them, reducing the combustion intensity to zero. Modeling system presented as two-level coloured nested Petri Net, which describes the agents’ interaction semantics. This model is implemented as a GIS-oriented software system that can be useful both in the fire fighting management as well as in staff training tactics to fighting wildfires. Some examples of modeling decision making on а ground fire extinguishing are presented.

  10. Working Paper: Open Government Data


    Heller, Lambert; Hauschke, Christian


    In diesem Working Paper sollen wesentliche Erkenntnisse und Forderungen aus der - bisher vor allem englischsprachigen - Diskussion über die webgerechte Freigabe öffentlicher Daten zusammengefaßt werden. Das Paper versteht sich als Ausgangspunkt für Diskussion und Strategieentwicklung, ohne letztere selbst leisten zu können. Die Entwicklungspotentiale von Open Government Data (OGD) sollen zunächst aus der Sicht verschiedener Beteiligter dargestellt werden. Mit den in den Sebastopol-Prinzipien ...

  11. All-printed paper memory

    KAUST Repository

    Lien, Derhsien


    We report the memory device on paper by means of an all-printing approach. Using a sequence of inkjet and screen-printing techniques, a simple metal-insulator-metal device structure is fabricated on paper as a resistive random access memory with a potential to reach gigabyte capacities on an A4 paper. The printed-paper-based memory devices (PPMDs) exhibit reproducible switching endurance, reliable retention, tunable memory window, and the capability to operate under extreme bending conditions. In addition, the PBMD can be labeled on electronics or living objects for multifunctional, wearable, on-skin, and biocompatible applications. The disposability and the high-security data storage of the paper-based memory are also demonstrated to show the ease of data handling, which are not achievable for regular silicon-based electronic devices. We envision that the PPMDs manufactured by this cost-effective and time-efficient all-printing approach would be a key electronic component to fully activate a paper-based circuit and can be directly implemented in medical biosensors, multifunctional devices, and self-powered systems. © 2014 American Chemical Society.

  12. Describing the longitudinal course of major depression using Markov models: Data integration across three national surveys

    Directory of Open Access Journals (Sweden)

    Lee Robert C


    Full Text Available Abstract Background Most epidemiological studies of major depression report period prevalence estimates. These are of limited utility in characterizing the longitudinal epidemiology of this condition. Markov models provide a methodological framework for increasing the utility of epidemiological data. Markov models relating incidence and recovery to major depression prevalence have been described in a series of prior papers. In this paper, the models are extended to describe the longitudinal course of the disorder. Methods Data from three national surveys conducted by the Canadian national statistical agency (Statistics Canada were used in this analysis. These data were integrated using a Markov model. Incidence, recurrence and recovery were represented as weekly transition probabilities. Model parameters were calibrated to the survey estimates. Results The population was divided into three categories: low, moderate and high recurrence groups. The size of each category was approximated using lifetime data from a study using the WHO Mental Health Composite International Diagnostic Interview (WMH-CIDI. Consistent with previous work, transition probabilities reflecting recovery were high in the initial weeks of the episodes, and declined by a fixed proportion with each passing week. Conclusion Markov models provide a framework for integrating psychiatric epidemiological data. Previous studies have illustrated the utility of Markov models for decomposing prevalence into its various determinants: incidence, recovery and mortality. This study extends the Markov approach by distinguishing several recurrence categories.

  13. Practical expressions describing detective quantum efficiency in flat-panel detectors (United States)

    Kim, H. K.


    In radiology, image quality excellence is a balance between system performance and patient dose, hence x-ray systems must be designed to ensure the maximum image quality is obtained for the lowest consistent dose. The concept of detective quantum efficiency (DQE) is widely used to quantify, understand, measure, and predict the performance of x-ray detectors and imaging systems. Cascaded linear-systems theory can be used to estimate DQE based on the system design parameters and this theoretical DQE can be utilized for determining the impact of various physical processes, such as secondary quantum sinks, noise aliasing, reabsorption noise, and others. However, the prediction of DQE usually requires tremendous efforts to determine each parameter consisting of the cascaded linear-systems model. In this paper, practical DQE formalisms assessing both the photoconductor- and scintillator-based flat-panel detectors under quantum-noise-limited operation are described. The developed formalisms are experimentally validated and discussed for their limits. The formalisms described in this paper would be helpful for the rapid prediction of the DQE performances of developing systems as well as the optimal design of systems.

  14. Renovation and Strengthening of Wooden Beams With CFRP Bands Including the Rheological Effects

    Directory of Open Access Journals (Sweden)

    Kula Krzysztof


    Full Text Available The paper presents a work analysis of wooden beams reinforced with glued composite bands from the top and resin inclusions, taking into account the rheology of materials. The paper presents numerical model of the multimaterial beam work including rheological phenomena described by linear equations of viscoelasticity. For the construction of this model one used MES SIMULIA ABAQUS environment in which were prepared its own procedures containing rheological models. The calculation results were compared with the literature data. One has done an analysis of the advisability of the use of CFRP reinforcements bands in terms of rheological phenomena.

  15. The research of some polygraphic paper samples's polarization characteristics (United States)

    Gavryliak, Mykhailo S.; Dobrovolskyi, Yuriy G.; Motrych, Artem V.; Arkhelyuk, Alexander D.


    Methods of investigation the polarization characteristics of certain types of polygraph paper were described. The most effective method for estimation of the characteristic features of optical heterogeneities of polygraph paper was proposed. The greatest sensitivity to the structural organization of optical heterogeneities of paper was observed for linearly polarized light beams with 90 degree polarization azimuth.

  16. Local constitutive behavior of paper determined by an inverse method (United States)

    John M. Considine; C. Tim Scott; Roland Gleisner; Junyong Zhu


    The macroscopic behavior of paper is governed by small-scale behavior. Intuitively, we know that a small-scale defect with a paper sheet effectively determines the global behavior of the sheet. In this work, we describe a method to evaluate the local constitutive behavior of paper by using an inverse method.

  17. Studies and analyses of the management of scientific research and development, including implementation and application at NASA centers (United States)

    Rubenstein, A. H.


    Summary results obtained through the Program of Research on the Management of Research and Development (POMRAD) were presented. The nature of the overall program and the specific projects undertaken were described. Statistical data is also given concerning the papers, publications, people, and major program areas associated with the program. The actual list of papers, names of doctoral and masters theses, and other details of the program are included as appendices.

  18. Teaching Nuclear Issues. Occasional Paper No. 10. (United States)

    Hicks, David W.

    The nuclear debate is one of critical importance and should be explored as part of the school curriculum. The psychology of denying the issue of nuclear arms and the psychological effects of the arms race on children is examined in this paper. A number of topics that might be included in discussion of nuclear issues are the arms race, politics,…

  19. Twitter Conversation Patterns Related to Research Papers (United States)

    Nelhans, Gustaf; Lorentzen, David Gunnarsson


    Introduction: This paper deals with what academic texts and datasets are referred to and discussed on Twitter. We used document object identifiers as references to these items. Method: We streamed tweets from the Twitter application programming interface including the strings "dx" and "doi" while simultaneously streaming tweets…

  20. MITA Working Papers in Psycholinguistics, Volume 3. (United States)

    Otsu, Yukio, Ed.


    This volume of working papers in psycholinguistics, from the "MITA Psycholinguistics Circle", contains the following articles: "Some Problems in the Acquisition of Derived Nouns" (Mika Endo); "World Knowledge in Children's Sentence Comprehension" (Yuki Hirose); "Examining the Including and Excluding Roles of…

  1. Australia's Educational Expenditures. Working Paper No. 50 (United States)

    Burke, Gerald


    This paper provides an analysis of revenue for and expenditure on Australian education institutions. It includes a review of funding from public and private sources and from overseas. Analyses are made for education as a whole and for the major sectors: schools, vocational education and training (VET) and higher education. Estimates are considered…

  2. Working Paper. Innovation and Collective Entrepreneurship

    DEFF Research Database (Denmark)

    Spear, Roger

    This paper examines different forms of innovation including social innovation, and why innovation and social innovation have become important themes in public policy in a context of the increasing and diverse demands on welfare regimes, and in an era of constrained budgets. It will review differe...

  3. Impact papers on aging in 2009

    DEFF Research Database (Denmark)

    Blagosklonny, Mikhail V; Campisi, Judy; Sinclair, David A


    The Editorial Board of Aging reviews research papers published in 2009, which they believe have or will have significant impact on aging research. Among many others, the topics include genes that accelerate aging or in contrast promote longevity in model organisms, DNA damage responses and telome...

  4. Opening Statements and Speeches. Plenary Session. Papers. (United States)

    International Federation of Library Associations, The Hague (Netherlands).

    Official opening statements, organizational reports, and papers on libraries in a technological world, which were presented at the 1983 International Federation of Library Associations (IFLA) conference include: (1) welcoming addresses by Franz Georg Kaltwasser and Mathilde Berghofer-Weichner; (2) opening speeches by Else Granheim (IFLA president)…

  5. Combining prior knowledge with data-driven modeling of a batch distillation column including start-up

    NARCIS (Netherlands)

    van Lith, P.F.; van Lith, Pascal F.; Betlem, Bernardus H.L.; Roffel, B.


    This paper presents the development of a simple model which describes the product quality and production over time of an experimental batch distillation column, including start-up. The model structure is based on a simple physical framework, which is augmented with fuzzy logic. This provides a way

  6. Active paper for active learning

    Directory of Open Access Journals (Sweden)

    Heather Brown


    Full Text Available Paper documents have great advantages in readability, portability and familiarity, but are necessarily static and slow to update. Much recent research has concentrated on the dynamic demonstrations, immediate feedback, and easy updating that can be provided by electronic teaching material. Although an increasing number of teaching packages make use of both paper and electronic documents, the two are typically accessed by completely separate interfaces. We have been taking a different approach and investigating the use of a DigitalDesk (Wellner, 1991; Wellner, 1993 as a means of integrating normal paper teaching material with electronic versions of the same material. Many printed books also exist in electronic form, and our goal is to allow these books to be used as natural interfaces to any additional information that may be present in the electronic version.

  7. Thermal Conductivity of Coated Paper (United States)

    Kerr, Lei L.; Pan, Yun-Long; Dinwiddie, Ralph B.; Wang, Hsin; Peterson, Robert C.


    In this article, a method for measuring the thermal conductivity of paper using a hot disk system is introduced. To the best of our knowledge, few publications are found discussing the thermal conductivity of a coated paper, although it is important to various forms of today’s digital printing where heat is used for imaging, as well as for toner fusing. This motivated an investigation of the thermal conductivity of paper coating. This study demonstrates that the thermal conductivity is affected by the coating mass and the changes in the thermal conductivity affect toner gloss and density. As the coating mass increases, the thermal conductivity increases. Both the toner gloss and density decrease as the thermal conductivity increases. The toner gloss appears to be more sensitive to the changes in the thermal conductivity.

  8. Rabi N. Bhattacharya selected papers

    CERN Document Server

    Waymire, Edward


    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...

  9. Musculoskeletal ultrasound including definitions for ultrasonographic pathology

    DEFF Research Database (Denmark)

    Wakefield, RJ; Balint, PV; Szkudlarek, Marcin


    Ultrasound (US) has great potential as an outcome in rheumatoid arthritis trials for detecting bone erosions, synovitis, tendon disease, and enthesopathy. It has a number of distinct advantages over magnetic resonance imaging, including good patient tolerability and ability to scan multiple joints...... in a short period of time. However, there are scarce data regarding its validity, reproducibility, and responsiveness to change, making interpretation and comparison of studies difficult. In particular, there are limited data describing standardized scanning methodology and standardized definitions of US...... pathologies. This article presents the first report from the OMERACT ultrasound special interest group, which has compared US against the criteria of the OMERACT filter. Also proposed for the first time are consensus US definitions for common pathological lesions seen in patients with inflammatory arthritis....

  10. The extent of soft tissue and musculoskeletal injuries after earthquakes; describing a role for reconstructive surgeons in an emergency response. (United States)

    Clover, A J P; Jemec, B; Redmond, A D


    Earthquakes are the leading cause of natural disaster-related mortality and morbidity. Soft tissue and musculoskeletal injuries are the predominant type of injury seen after these events and a major reason for admission to hospital. Open fractures are relatively common; however, they are resource-intense to manage. Appropriate management is important in minimising amputation rates and preserving function. This review describes the pattern of musculoskeletal and soft-tissue injuries seen after earthquakes and explores the manpower and resource implications involved in their management. A Medline search was performed, including terms "injury pattern" and "earthquake," "epidemiology injuries" and "earthquakes," "plastic surgery," "reconstructive surgery," "limb salvage" and "earthquake." Papers published between December 1992 and December 2012 were included, with no initial language restriction. Limb injuries are the commonest injuries seen accounting for 60 % of all injuries, with fractures in more than 50 % of those admitted to hospital, with between 8 and 13 % of these fractures open. After the first few days and once the immediate lifesaving phase is over, the management of these musculoskeletal and soft-tissue injuries are the commonest procedures required. Due to the predominance of soft-tissue and musculoskeletal injuries, plastic surgeons as specialists in soft-tissue reconstruction should be mobilised in the early stages of a disaster response as part of a multidisciplinary team with a focus on limb salvage.

  11. Methane from waste containing paper

    Energy Technology Data Exchange (ETDEWEB)


    Waste solids containing paper are biologically treated in a system by: fermentation with lactobacilli, separation of the solids, ion exchange of the supernatant from the separation, anaerobic digestion of the ion-exchanged liquor, separation of a liquor from the fermentation, and digestion of the liquor. Thus, a municipal waste containing paper and water was inoculated with Aspergillus niger and lactobacilli for 2 days; the mixture was anaerobically treated and centrifuged; the clear liquor was ion exchanged; and the solid waste was filter pressed. The filter cake was treated with Trichoderma nigricaus and filtered. The filtrate and the ion-exchanged liquor were digested for CH/sub 4/ production.

  12. Which Metrics Are Appropriate to Describe the Value of New Cancer Therapies?

    Directory of Open Access Journals (Sweden)

    Peter Johnson


    Full Text Available Patients with certain cancers are treated with curative intent, but for others the results are less favorable and different therapeutic approaches are needed. Early data suggest that new therapies, which modulate immune responses to cancers, may have potential for long-term survival in a proportion of cases. Therefore, it is timely to consider whether metrics generally used to describe the medical value of therapies for patients with common solid tumors remain appropriate for therapies with curative potential. Literature reviews were conducted to define how various stakeholders describe cure in oncology and to identify the endpoints used in clinical trials for selected solid tumors. The results showed that “cure” is described using various terms that can be divided broadly into lack of disease progression, eradication of cancerous cells, and survival. The review of trial endpoints showed frequent use of median overall survival (OS and progression- and response-related endpoints. Because these endpoints were mainly described in the context of chemotherapies that are not generally curative, they may not adequately capture outcomes of new therapeutic modalities with potential for long-term survival. More appropriate endpoints may include mean OS, cure fraction, and OS rate at landmark time points.

  13. Acute Pancreatitis in the Postoperative Course after Esophagectomy: A Major Complication Described in 4 Patients

    Directory of Open Access Journals (Sweden)

    R.L.G.M. Blom


    Full Text Available Background: Postoperative pancreatitis is a rare but devastating complication after esophageal surgery. It has been described in connection with abdominal surgery but the etiology in connection with esophageal surgery has never been evaluated. The present study describes 4 cases of postoperative pancreatitis, and a hypothesis about the etiology is formed. Methods: We performed a search for patients with postoperative pancreatitis after esophagectomy using our prospective database including all patients that underwent esophageal resection at our institution between 1993 and 2008. Pancreatitis was described as abdominal pain, hyperamylasemia, signs of pancreatitis on CT scan or findings during laparotomy or autopsy. Results: A total of 950 patients underwent esophagectomy at our institution, 4 patients developed postoperative pancreatitis (incidence 0.4%. Two out of four patients died. Discussion: Pancreatitis following esophageal surgery is a serious, potentially lethal complication. Diagnosis can be difficult as clear clinical or laboratory findings might be lacking. Peroperative manipulation of the pancreas, mobilization of the duodenum or compromized vascularization have been suggested as etiological factors; although in the described patients, none of these factors were identified as the cause of pancreatitis. In conclusion, pancreatitis following esophageal surgery is a serious but rare complication that should always be considered in patients who deteriorate postoperatively.

  14. "It's a Burden You Carry": Describing Moral Distress in Emergency Nursing. (United States)

    Wolf, Lisa A; Perhats, Cydne; Delao, Altair M; Moon, Michael D; Clark, Paul R; Zavotsky, Kathleen E


    Moral distress in nursing has been studied in many settings, but there is a paucity of research on moral distress as it manifests in the emergency department. One study suggests a correlation between moral distress and aspects of burnout, and other researchers report that nurses have considered leaving their position or even their profession because of moral distress. Further exploration of these issues may provide insight into their effects on ED patient care and the emergency nursing profession. The purpose of this study was to explore the nature of moral distress as it is experienced and described by emergency nurses. A qualitative, exploratory design was employed using semi-structured focus groups for data collection. Using an iterative process, transcripts were analyzed for emerging themes by the research team. Six researchers analyzed the transcripts using a thematic analysis approach. Themes from the data included dysfunctional practice arena, being overwhelmed, and adaptive/maladaptive coping. Participants described, overall, a profound feeling of not being able to provide patient care as they wanted to. Causes of moral distress in emergency nurses are environment driven, not incident driven, as is described in other settings, and include a high-acuity, high-demand, technical environment with insufficient resources. Interventions should be targeted to improve environmental factors that contribute to the moral distress of emergency nurses. Future research should focus on the development and validation of an instrument to measure moral distress in this setting. Copyright © 2016 Emergency Nurses Association. Published by Elsevier Inc. All rights reserved.

  15. Fashion, Paper Dolls and Multiplicatives (United States)

    Ura, Suzana Kaori; Stein-Barana, Alzira C. M.; Munhoz, Deisy P.


    The multiplicative principle is the tool allowing the counting of groups that can be described by a sequence of events. An event is a subset of sample space, i.e. a collection of possible outcomes, which may be equal to or smaller than the sample space as a whole. It is important that students understand this basic principle early on and know how…

  16. Methods for describing the electromagnetic properties of silver and gold nanoparticles. (United States)

    Zhao, Jing; Pinchuk, Anatoliy O; McMahon, Jeffrey M; Li, Shuzhou; Ausman, Logan K; Atkinson, Ariel L; Schatz, George C


    This Account provides an overview of the methods that are currently being used to study the electromagnetics of silver and gold nanoparticles, with an emphasis on the determination of extinction and surface-enhanced Raman scattering (SERS) spectra. These methods have proven to be immensely useful in recent years for interpreting a wide range of nanoscience experiments and providing the capability to describe optical properties of particles up to several hundred nanometers in dimension, including arbitrary particle structures and complex dielectric environments (adsorbed layers of molecules, nearby metal films, and other particles). While some of the methods date back to Mie's celebrated work a century ago, others are still at the forefront of algorithm development in computational electromagnetics. This Account gives a qualitative description of the physical and mathematical basis behind the most commonly used methods, including both analytical and numerical methods, as well as representative results of applications that are relevant to current experiments. The analytical methods that we discuss are either derived from Mie theory for spheres or from the quasistatic (Gans) model as applied to spheres and spheroids. In this discussion, we describe the use of Mie theory to determine electromagnetic contributions to SERS enhancements that include for retarded dipole emission effects, and the use of the quasistatic approximation for spheroidal particles interacting with dye adsorbate layers. The numerical methods include the discrete dipole approximation (DDA), the finite difference time domain (FDTD) method, and the finite element method (FEM) based on Whitney forms. We discuss applications such as using DDA to describe the interaction of two gold disks to define electromagnetic hot spots, FDTD for light interacting with metal wires that go from particle-like plasmonic response to the film-like transmission as wire dimension is varied, and FEM studies of

  17. The IDEA papers no 4

    International Nuclear Information System (INIS)

    Laurent, J.


    The Information network on the Economic Development in Aquitaine (IDEA) aims to collect and spread the environmental information concerning the Aquitaine, in order to implement an observatory of the regional environment and of the sustainable development. The IDEA paper no. 4 presents the point of view of some participants to the third national meeting of the environment observatories. (A.L.B.)

  18. Fifteen papers on functional analysis

    CERN Document Server

    Allakhverdiev, B P; Fainshtein, A S; Khelemskii, AYa; Klenina, LI


    The papers in this volume cover topics on functional analysis. They have been selected, translated, and edited from publications not otherwise translated into English under the auspices of the AMS-ASL-IMS Committee on Translations from Russian and Other Foreign Languages.

  19. Eleven papers on differential equations

    CERN Document Server

    Akhmedov, S A; Berezanskii, Yu M; Bazalii, B V; Berezanskii, Yu M


    The papers in this volume, like those in the previous one, have been selected, translated, and edited from publications not otherwise translated into English under the auspices of the AMS-ASL-IMS Committee on Translations from Russian and Other Foreign Languages.

  20. IAEA paper on institutional arrangements

    International Nuclear Information System (INIS)


    At its fifth series of meetings, Working Group 3 received a background paper prepared by the IAEA which had a threefold purpose: firstly, to provide an overview on institutional arrangements under consideration by the INFCE Working Groups; secondly, to explore potential relationships between the various institutional arrangements under consideration; and thirdly, to identify areas where further analysis might be desirable

  1. Discussion on Papers 11 - 13

    International Nuclear Information System (INIS)

    Haws, E.; Matthews, M.E.; Wilson, E.M.; Charles-Jones, S.; Allen, R.F.; Young, R.M.; O'Connor, B.


    The discussion covered the following topics: the nature of boulder clay for foundations; navigation through the barrage; the construction of sluice caissons; government subsidies for construction costs; the effect of wave action on river banks; allowances for reflected energy in hydrodynamic models; water quality in impounded pools; sediment deposition. Separate abstracts have been prepared for the three papers under discussion. (UK)


    African Journals Online (AJOL)

    Serge Guiot


    Sep 27, 2012 ... reactors were inoculated with anaerobic granules from a UASB reactor treating paper wastewater, and fed with brewery wastewater. Initially, the reactors were started up in sequencing batch mode, applying an organic loading rate (OLR) of 0.5 g. COD/l.d and then operated in continuous mode, with OLR.

  3. Topical papers on raw materials

    International Nuclear Information System (INIS)


    In the papers of this working group, the availability of uranium and the long-term supply situation for this raw material are discussed. A problem closely connected with uranium supply are the commercial contracts and their particularities. The points of view of the reporting countries of Great Britain, South Africa, Switzerland, Australia, Japan, and Korea are made clear

  4. Scientific papers: A new paradigm (United States)

    Reid, George C.

    The problem of how to organize and write a scientific paper is a very basic one for most of us. A scientific paper is, after all, the only tangible product of a research scientist and, like all products, will be a failure if not marketed properly to reach its potential buyers. I think that a lack of attention to this “marketing and sales” aspect of research is a serious fault in our community, by which I mean those of us who publish in AGU journals.The potential audience for a scientific paper can be divided roughly into three distinct categories. The first group is usually rather small in number, consisting of fellow scientists working in a very closely related field, and to whom the details of the work are of major importance. The second group is also fellow scientists, but their interest is less sharply focused, and they are concerned with the broad outlines of the work and essential results. The third group is the sponsors and the people who actually pay for the work, whose interest in the details is minimal and they, sadly enough, are often concerned only with the fact that a paper has been published rather than its content.

  5. Educational Choice. A Background Paper. (United States)

    Quality Education for Minorities Network, Washington, DC.

    This paper addresses school choice, one proposal to address parental involvement concerns, focusing on historical background, definitions, rationale for advocating choice, implementation strategies, and implications for minorities and low-income families. In the past, transfer payment programs such as tuition tax credits and vouchers were…

  6. Gas Mitigation in Paper Production (United States)

    Santos, AS; Bittencourt, C.


    The Brazilian paper industry has competitive advantages offered by the favorable climate, which favors an increase in the yield of forest restoration, and consequently, in the productive process. On the other hand, following the greenhouse gases (GHG), we can see our constantly changing sun, causing the solar storms, allowing their prevention or mitigating measures. The objective of this work is to contribute to the construction of the understanding necessary for the reduction of GHG emission from a preliminary analysis of the pulp and paper sector. As a secondary objective, the text preliminarily analyzes a company’s behavior against the backdrop of the Paris Accord, which strengthens the global response to the threat of climate change and strengthens the capacity of countries to deal with the impacts of such changes. The identification of best practices in the pulp and paper industry is understood, focusing on environmental sustainability, such as the adoption of reforestation, obtaining significant results. In the case of the paper industry, the management of public forests for sustainable production, within the structure of the Ministry of the Environment, establishes the promotion of public awareness about the importance of conservation, recovery and sustainable management of forest resources.

  7. Ethanol from mixed waste paper

    International Nuclear Information System (INIS)

    Kerstetter, J.D.; Lyons, J.K.


    The technology, markets, and economics for converting mixed waste paper to ethanol in Washington were assessed. The status of enzymatic and acid hydrolysis projects were reviewed. The market for ethanol blended fuels in Washington shows room for expansion. The economics for a hypothetical plant using enzymatic hydrolysis were shown to be profitable

  8. The UK free paper battlefield

    NARCIS (Netherlands)

    Bakker, P.


    Launched in 1999 to keep the Swedes out, Metro has since spread across the UK. Its success has led to the mixed free/paid model adopted by some papers, to other publishers piling in to get a slice of the freesheet action and to the current melee in London. How will it all end? Piet Bakker looks back

  9. Stellenbosch Papers in Linguistics Plus

    African Journals Online (AJOL)

    Stellenbosch Papers in Linguistics Plus. Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives · Journal Home > Vol 10 (1985) >. Log in or Register to get access to full text downloads. Username, Password, Remember me ... Abstract. No Abstract. Full Text: EMAIL FREE FULL TEXT EMAIL ...

  10. Stellenbosch Papers in Linguistics Plus

    African Journals Online (AJOL)

    Stellenbosch Papers in Linguistics Plus. Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives · Journal Home > Vol 50 (2016) >. Log in or Register to get access to full text downloads. Username, Password, Remember me ... Josh Westbury, Alexander Andrason. Abstract. No Abstract ...

  11. Overview paper on nuclear power

    Energy Technology Data Exchange (ETDEWEB)

    Spiewak, I.; Cope, D.F.


    This paper was prepared as an input to ORNL's Strategic Planning Activity, ORNL National Energy Perspective (ONEP). It is intended to provide historical background on nuclear power, an analysis of the mission of nuclear power, a discussion of the issues, the technology choices, and the suggestion of a strategy for encouraging further growth of nuclear power.

  12. Stellenbosch Papers in Linguistics Plus

    African Journals Online (AJOL)

    The papers published in SPiL Plus are primarily intended for scholars with an interest in linguistics and related disciplines in Southern Africa. SPiL Plus provides a platform ... Using multimodal pedagogies in writing centres to improve student writing · EMAIL FREE FULL TEXT EMAIL FREE FULL TEXT · DOWNLOAD FULL ...

  13. Nerdfighters, "Paper Towns," and heterotopia

    Directory of Open Access Journals (Sweden)

    Lili Wilkinson


    Full Text Available Socially and politically controlled teenagers find emancipatory spaces in young adult (YA literature, spaces where institutions can be challenged and individuals can gain agency and empowerment. Drawing on Foucault's theory of heterotopia, I examine the literary spaces in John Green's YA novel Paper Towns and examine how Green's online social networking community Nerdfighters shares an ideological common ground with the novel.

  14. Overview paper on nuclear power

    International Nuclear Information System (INIS)

    Spiewak, I.; Cope, D.F.


    This paper was prepared as an input to ORNL's Strategic Planning Activity, ORNL National Energy Perspective (ONEP). It is intended to provide historical background on nuclear power, an analysis of the mission of nuclear power, a discussion of the issues, the technology choices, and the suggestion of a strategy for encouraging further growth of nuclear power

  15. Cellulose nanofibers use in coated paper (United States)

    Richmond, Finley

    Cellulose Nanofibers (CNF) are materials that can be obtained by the mechanical breakdown of natural fibers. CNF have the potential to be produced at low cost in a paper mill and may provide novel properties to paper, paper coatings, paints, or other products. However, suspensions have a complex rheology even at low solid contents. To be able to coat, pump, or mix CNF at moderate solids, it is critical to understand the rheology of these suspensions and how they flow in process equipment; current papers only report the rheology up to 6% solids. Few publications are available that describe the coating of CNF onto paper or the use of CNF as an additive into a paper coating. The rheology of CNF suspensions and coatings that contain CNF were characterized with parallel-disk geometry in a controlled stress rheometer. The steady shear viscosity, the complex viscosity, the storage modulus, and the yield stress were determined for the range of solids or concentrations (2.5-10.5%). CNF were coated onto paper with a laboratory rod coater, a size press and a high speed cylindrical laboratory coater (CLC). For each case, the coat weights were measures and the properties of the papers were characterized. CNF water base suspension was found to be a shear thinning with a power law index of around 0.1. Oscillatory tests showed a linear viscoelastic region at low strains and significant storage and loss moduli even at low solids. The Cox Merz rule does not hold for CNF suspensions or coating formulations that contain CNF with complex viscosities that are about 100 times larger than the steady shear viscosities. Paper coating formulations that contain CNF were found to have viscosities and storage and loss moduli that are over ten times larger than coatings that contain starch at similar solids. CNF suspensions were coated on papers with low amount transferred on paper either at high solids or high nip loadings. The amount transferred appears to be controlled by an interaction of

  16. Method for production of carbon nanofiber mat or carbon paper

    Energy Technology Data Exchange (ETDEWEB)

    Naskar, Amit K.


    Method for the preparation of a non-woven mat or paper made of carbon fibers, the method comprising carbonizing a non-woven mat or paper preform (precursor) comprised of a plurality of bonded sulfonated polyolefin fibers to produce said non-woven mat or paper made of carbon fibers. The preforms and resulting non-woven mat or paper made of carbon fiber, as well as articles and devices containing them, and methods for their use, are also described.

  17. Bio-Based Coatings for Paper Applications

    Directory of Open Access Journals (Sweden)

    Vibhore Kumar Rastogi


    Full Text Available The barrier resistance and wettability of papers are commonly controlled by the application of petroleum-based derivatives such as polyethylene, waxes and/or fluor- derivatives as coating. While surface hydrophobicity is improved by employing these polymers, they have become disfavored due to limitations in fossil-oil resources, poor recyclability, and environmental concerns on generated waste with lack of biodegradation. Alternatively, biopolymers including polysaccharides, proteins, lipids and polyesters can be used to formulate new pathways for fully bio-based paper coatings. However, difficulties in processing of most biopolymers may arise due to hydrophilicity, crystallization behavior, brittleness or melt instabilities that hinder a full exploitation at industrial scale. Therefore, blending with other biopolymers, plasticizers and compatibilizers is advantageous to improve the coating performance. In this paper, an overview of barrier properties and processing of bio-based polymers and their composites as paper coating will be discussed. In particular, recent technical advances in nanotechnological routes for bio-based nano- composite coatings will be summarized, including the use of biopolymer nanoparticles, or nanofillers such as nanoclay and nanocellulose. The combination of biopolymers along with surface modification of nanofillers can be used to create hierarchical structures that enhance hydrophobicity, complete barrier protection and functionalities of coated papers.

  18. A describing function approach to bipolar RF-power amplifier simulation

    DEFF Research Database (Denmark)

    Vidkjær, Jens


    A method for fast and accurate computations of the primary performance parameters such as gain, efficiency, output power, and bandwidth in class-C biased RF-power amplifier stages is presented. The method is based on a describing function characterization of the RF-power transistor where the term......A method for fast and accurate computations of the primary performance parameters such as gain, efficiency, output power, and bandwidth in class-C biased RF-power amplifier stages is presented. The method is based on a describing function characterization of the RF-power transistor where...... the terminal currents are assumed sinusoidal. The approximation comprises both the input and output properties of the transistor simultaneously and includes the effects of base widening, current saturation, and the most significant thermal dependencies. The method is verified through a series of experiments....

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

    CERN Document Server

    Nomizu, Katsumi


    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.

  20. Indexing Research Papers in Open Access Databases

    Directory of Open Access Journals (Sweden)

    Alexandra-Emilia Fortiş


    Full Text Available This paper synthesizes the actions performed in order to transform a classic scientific research journal – “Annals. Computer Science Series” – available only in printed form until 2008, into a modern e-journal with free access to the full text of the articles. For achieving this goal, the research papers have been included in various article databases, portals and library catalogs which offered a high visibility to the journal. Keywords: Open-Acces Initiative, article database, standards, meta-data harvesting