WorldWideScience

Sample records for tempo change based

  1. Effects of timbre and tempo change on memory for music.

    Science.gov (United States)

    Halpern, Andrea R; Müllensiefen, Daniel

    2008-09-01

    We investigated the effects of different encoding tasks and of manipulations of two supposedly surface parameters of music on implicit and explicit memory for tunes. In two experiments, participants were first asked to either categorize instrument or judge familiarity of 40 unfamiliar short tunes. Subsequently, participants were asked to give explicit and implicit memory ratings for a list of 80 tunes, which included 40 previously heard. Half of the 40 previously heard tunes differed in timbre (Experiment 1) or tempo (Experiment 2) in comparison with the first exposure. A third experiment compared similarity ratings of the tunes that varied in timbre or tempo. Analysis of variance (ANOVA) results suggest first that the encoding task made no difference for either memory mode. Secondly, timbre and tempo change both impaired explicit memory, whereas tempo change additionally made implicit tune recognition worse. Results are discussed in the context of implicit memory for nonsemantic materials and the possible differences in timbre and tempo in musical representations.

  2. Sensorimotor synchronization with tempo-changing auditory sequences: Modeling temporal adaptation and anticipation.

    Science.gov (United States)

    van der Steen, M C Marieke; Jacoby, Nori; Fairhurst, Merle T; Keller, Peter E

    2015-11-11

    The current study investigated the human ability to synchronize movements with event sequences containing continuous tempo changes. This capacity is evident, for example, in ensemble musicians who maintain precise interpersonal coordination while modulating the performance tempo for expressive purposes. Here we tested an ADaptation and Anticipation Model (ADAM) that was developed to account for such behavior by combining error correction processes (adaptation) with a predictive temporal extrapolation process (anticipation). While previous computational models of synchronization incorporate error correction, they do not account for prediction during tempo-changing behavior. The fit between behavioral data and computer simulations based on four versions of ADAM was assessed. These versions included a model with adaptation only, one in which adaptation and anticipation act in combination (error correction is applied on the basis of predicted tempo changes), and two models in which adaptation and anticipation were linked in a joint module that corrects for predicted discrepancies between the outcomes of adaptive and anticipatory processes. The behavioral experiment required participants to tap their finger in time with three auditory pacing sequences containing tempo changes that differed in the rate of change and the number of turning points. Behavioral results indicated that sensorimotor synchronization accuracy and precision, while generally high, decreased with increases in the rate of tempo change and number of turning points. Simulations and model-based parameter estimates showed that adaptation mechanisms alone could not fully explain the observed precision of sensorimotor synchronization. Including anticipation in the model increased the precision of simulated sensorimotor synchronization and improved the fit of model to behavioral data, especially when adaptation and anticipation mechanisms were linked via a joint module based on the notion of joint internal

  3. Changes in music tempo entrain movement related brain activity.

    Science.gov (United States)

    Daly, Ian; Hallowell, James; Hwang, Faustina; Kirke, Alexis; Malik, Asad; Roesch, Etienne; Weaver, James; Williams, Duncan; Miranda, Eduardo; Nasuto, Slawomir J

    2014-01-01

    The neural mechanisms of music listening and appreciation are not yet completely understood. Based on the apparent relationship between the beats per minute (tempo) of music and the desire to move (for example feet tapping) induced while listening to that music it is hypothesised that musical tempo may evoke movement related activity in the brain. Participants are instructed to listen, without moving, to a large range of musical pieces spanning a range of styles and tempos during an electroencephalogram (EEG) experiment. Event-related desynchronisation (ERD) in the EEG is observed to correlate significantly with the variance of the tempo of the musical stimuli. This suggests that the dynamics of the beat of the music may induce movement related brain activity in the motor cortex. Furthermore, significant correlations are observed between EEG activity in the alpha band over the motor cortex and the bandpower of the music in the same frequency band over time. This relationship is observed to correlate with the strength of the ERD, suggesting entrainment of motor cortical activity relates to increased ERD strength.

  4. Movement amplitude and tempo change in piano performance

    Science.gov (United States)

    Palmer, Caroline

    2004-05-01

    Music performance places stringent temporal and cognitive demands on individuals that should yield large speed/accuracy tradeoffs. Skilled piano performance, however, shows consistently high accuracy across a wide variety of rates. Movement amplitude may affect the speed/accuracy tradeoff, so that high accuracy can be obtained even at very fast tempi. The contribution of movement amplitude changes in rate (tempo) is investigated with motion capture. Cameras recorded pianists with passive markers on hands and fingers, who performed on an electronic (MIDI) keyboard. Pianists performed short melodies at faster and faster tempi until they made errors (altering the speed/accuracy function). Variability of finger movements in the three motion planes indicated most change in the plane perpendicular to the keyboard across tempi. Surprisingly, peak amplitudes of motion before striking the keys increased as tempo increased. Increased movement amplitudes at faster rates may reduce or compensate for speed/accuracy tradeoffs. [Work supported by Canada Research Chairs program, HIMH R01 45764.

  5. Reaction time to changes in the tempo of acoustic pulse trains.

    Science.gov (United States)

    Smith, R. P.; Warm, J. S.; Westendorf, D. H.

    1973-01-01

    Investigation of the ability of human observers to detect accelerations and decelerations in the rate of presentation of pulsed stimuli, i.e., changes in the tempo of acoustic pulse trains. Response times to accelerations in tempo were faster than to decelerations. Overall speed of response was inversely related to the pulse repetition rate.

  6. Investigation of Method for Changing Impression of Musical Piece by Changing its Tempo

    Science.gov (United States)

    Fukumoto, Makoto; Okamatsu, Keita; Matsuo, Kazuhisa

    We propose a simple method that changes impression of musical piece by changing its tempo and investigate psycho-physiological effects of the method with listening experiment. In the experiment, 8 subjects listened same musical pieces with various tempi, and analysis of heartbeat and Semantic-Differential method were used. In 6 out of 10 adjective pairs, inverted-U shapes were observed, and peak tempi of them were different. Moreover, “relaxed” evaluation might be related to listener's heart rate in rest. These results suggest possibility of constructing novel media player that changes impression of musical piece.

  7. A fundamental investigation of the microarchitecture and mechanical properties of tempo-oxidized nanofibrillated cellulose (NFC)-based aerogels

    Science.gov (United States)

    Teresa Cristina Fonseca Silva; Youssef Habibi; Jorge Luiz Colodette; Thomas Elder; Lucian A. Lucia

    2012-01-01

    Freeze-dried nanofibrillated cellulose based-aerogels were produced from cellulosic pulps extracted from Eucalyptus urograndis. Nanofibers were isolated under high pressure and modified with TEMPO-mediated oxidation and/or hydroxyapatite (HAp) to observe potential changes in mechanical properties. Two degrees of oxidation (DO), 0.1 and 0.2, were achieved as measured by...

  8. A Study of Music Students' Tempo Changes of a Soloist's Performance of Mozart's 1st Horn Concerto

    Science.gov (United States)

    Johnson, Christopher M.; Madsen, Clifford K.; Geringer, John M.

    2012-01-01

    The purpose of the present investigation was to investigate music students' tempo changes of a soloist's performance in an excerpt from Mozart's "Concerto No. 1 in D Major for Horn and Orchestra." We then compared the composite rubato pattern to tendencies found in a previous investigation using Mozart's "Concerto No. 2 in E[flat] Major for Horn…

  9. Room Temperature Ammonia Gas Sensing Using Mixed Conductor based TEMPOS Structures

    Directory of Open Access Journals (Sweden)

    Amita Chandra

    2008-10-01

    Full Text Available The current/voltage characteristics of mixed (ion+electron conductor-based ‘TEMPOS’ (Tunable Electronic Material with Pores in Oxide on Silicon structures are reported. TEMPOS are novel electronic MOS-like structures having etched swift heavy ion tracks (i.e., nanopores in the dielectric layer filled with some conducting material. The three contacts (two on top and one on the bottom, which resemble the classical bipolar or field effect transistor arrangements are, in principle, interchangeable when the overall electrical resistance along the tracks and on the surface are similar. Consequently, three configurations are obtained by interchanging the top contacts with the base contact in electronic circuits. The current/voltage characteristics show a diode like behaviour. Impedance measurements have been made for TEMPOS structures with tracks filled with ion conductors and also mixed conductors to study the ammonia sensing behaviour. The impedance has been found to be a function of frequency and magnitude of the applied signal and concentration of the ammonia solution. This is attributed to the large number of charge carriers (here protons available for conduction on exposure to ammonia and also to the large surface to volume ratio of the polymer composites embedded in the ion tracks. The measurement of both, the real and imaginary parts of impedance allows one to enhance the detection sensitivity greatly.

  10. TempoExpress: An Expressivity-Preserving Musical Tempo Transformation

    OpenAIRE

    Grachten, Maarten; Arcos, Josep Ll.; Lopez de Mantaras, Ramon

    2006-01-01

    The research described in this paper focuses on global tempo transformations of monophonic audio recordings of saxophone jazz performances. More concretely, we have investigated the problem of how a performance played at a particular tempo can be automatically rendered at another tempo while preserving its expressivity. To do so we have developed a case-based reasoning system called TempoExpress. The results we have obtained have been extensively compared against a sta...

  11. "HÁ UM TEMPO PARA CALAR E UM TEMPO PARA FALAR"

    Directory of Open Access Journals (Sweden)

    Carlo Maria Martini

    2011-01-01

    Full Text Available "Para tudo há momento, e tempo para cada coisa sob o céu: tempo de dar a luz e tempo de morrer, tempo de plantar e tempo de arrancar o que se plantou; tempo de matar e tempo de curar; tempo de destruir e tempo de construir; tempo de chorar e tempo de rir; tempo de lamentar e tempo de dançar; tempo de atirar pedras e tempo de juntar pedras; tempo de abraçar e tempo de evitar o abraço; tempo de procurar e tempo de perder; tempo de guardar e tempo de jogar fora;

  12. THE COLORADO PLATEAU CORING PROJECT: THE TIMESCALE AND TEMPO OF BIOTIC CHANGE OF THE EARLY MESOZOIC

    Science.gov (United States)

    Olsen, P. E.; Kent, D. V.; Mundil, R.; Irmis, R.; Geissman, J. W.; Martz, J.; Parker, W.

    2009-12-01

    The proposed Colorado Plateau Coring Project (CPCP) is an interdisciplinary, multi-institutional coring project designed to recover continuous core through mostly continental strata spanning ~100 million years of the Triassic and Jurassic. Its principal purpose is to tie the incredibly rich faunas, floras, and environmental record of this interval to a rigorously developed timescale and thus to biotic, environmental, and tectonic events at a global-scale. The overall strategy involves 3 long cores (~1000 m) and 2 shorter cores (300-500 m) intended to recover the full expression of the critical early Mesozoic transitions in clear superposition. The cores would span from the base of the Moenkopi to the top of the Morrison formations with sufficient overlap to splice the sections together without gaps and assess lateral facies variations, thickness changes, and stratigraphic completeness. The initial phase of the CPCP, currently under review, is a ~500 m core at Petrified Forest National Park (PFNP) that will recover virtually the entire pre-Owl Rock Mb. of the Late Triassic age Chinle and underlying Early-Middle Triassic age Moenkopi formations. Despite excellent outcrop and a long and distinguished history of study, striking ambiguities exist in local correlation, the temporal duration and resolution of biotic events, global correlations, and the paleolatitudinal position of the region that prevent tests of major competing climatic, biotic, and tectonic hypotheses of global significance. For example, correlations of existing paleomagnetic polarity data for the Chinle of PFNP (1) with the Newark basin astronomically tuned geomagnetic polarity timescale are consistent with new U-Pb dates from reworked volcanics in the Chinle, and result in three sets of implied hypotheses. First, most or all of the Chinle Fm. is Norian and younger in age (< ~ 220 Ma). Second, the supposed Carnian-Norian boundary in the Chinle is actually a late middle Norian extinction that may

  13. Increase in salivary oxytocin and decrease in salivary cortisol after listening to relaxing slow-tempo and exciting fast-tempo music.

    Science.gov (United States)

    Ooishi, Yuuki; Mukai, Hideo; Watanabe, Ken; Kawato, Suguru; Kashino, Makio

    2017-01-01

    Relaxation and excitation are components of the effects of music listening. The tempo of music is often considered a critical factor when determining these effects: listening to slow-tempo and fast-tempo music elicits relaxation and excitation, respectively. However, the chemical bases that underlie these relaxation and excitation effects remain unclear. Since parasympathetic and sympathetic nerve activities are facilitated by oxytocin and glucocorticoid, respectively, we hypothesized that listening to relaxing slow-tempo and exciting fast-tempo music is accompanied by increases in the oxytocin and cortisol levels, respectively. We evaluated the change in the salivary oxytocin and cortisol levels of participants listening to slow-tempo and fast-tempo music sequences. We measured the heart rate (HR) and calculated the heart rate variability (HRV) to evaluate the strength of autonomic nerve activity. After listening to a music sequence, the participants rated their arousal and valence levels. We found that both the salivary oxytocin concentration and the high frequency component of the HRV (HF) increased and the HR decreased when a slow-tempo music sequence was presented. The salivary cortisol level decreased and the low frequency of the HRV (LF) to HF ratio (LF/HF) increased when a fast-tempo music sequence was presented. The ratio of the change in the oxytocin level was correlated with the change in HF, LF/HF and HR, whereas that in the cortisol level did not show any correlation with indices of autonomic nerve activity. There was no correlation between the change in oxytocin level and self-reported emotions, while the change in cortisol level correlated with the arousal level. These findings suggest that listening to slow-tempo and fast-tempo music is accompanied by an increase in the oxytocin level and a decrease in the cortisol level, respectively, and imply that such music listening-related changes in oxytocin and cortisol are involved in physiological

  14. Increase in salivary oxytocin and decrease in salivary cortisol after listening to relaxing slow-tempo and exciting fast-tempo music.

    Directory of Open Access Journals (Sweden)

    Yuuki Ooishi

    Full Text Available Relaxation and excitation are components of the effects of music listening. The tempo of music is often considered a critical factor when determining these effects: listening to slow-tempo and fast-tempo music elicits relaxation and excitation, respectively. However, the chemical bases that underlie these relaxation and excitation effects remain unclear. Since parasympathetic and sympathetic nerve activities are facilitated by oxytocin and glucocorticoid, respectively, we hypothesized that listening to relaxing slow-tempo and exciting fast-tempo music is accompanied by increases in the oxytocin and cortisol levels, respectively. We evaluated the change in the salivary oxytocin and cortisol levels of participants listening to slow-tempo and fast-tempo music sequences. We measured the heart rate (HR and calculated the heart rate variability (HRV to evaluate the strength of autonomic nerve activity. After listening to a music sequence, the participants rated their arousal and valence levels. We found that both the salivary oxytocin concentration and the high frequency component of the HRV (HF increased and the HR decreased when a slow-tempo music sequence was presented. The salivary cortisol level decreased and the low frequency of the HRV (LF to HF ratio (LF/HF increased when a fast-tempo music sequence was presented. The ratio of the change in the oxytocin level was correlated with the change in HF, LF/HF and HR, whereas that in the cortisol level did not show any correlation with indices of autonomic nerve activity. There was no correlation between the change in oxytocin level and self-reported emotions, while the change in cortisol level correlated with the arousal level. These findings suggest that listening to slow-tempo and fast-tempo music is accompanied by an increase in the oxytocin level and a decrease in the cortisol level, respectively, and imply that such music listening-related changes in oxytocin and cortisol are involved in

  15. Tempo curves considered harmful

    NARCIS (Netherlands)

    Desain, P.; Honing, H.

    1993-01-01

    In the literature of musicology, computer music research and the psychology of music, timing or tempo measurements are mostly presented in the form of continuous curves. The notion of these tempo curves is dangerous, despite its widespread use, because it lulls its users into the false impression

  16. Utilizing TEMPO surface estimates to determine changes in emissions, community exposure and environmental impacts from cement kilns across North America using alternative fuels

    Science.gov (United States)

    Pegg, M. J.; Gibson, M. D.; Asamany, E.

    2015-12-01

    A major problem faced by all North American (NA) Governments is managing solid waste from residential and non-residential sources. One way to mitigate the need to expand landfill sites across NA is waste diversion for use as alternative fuel in industries such as cement manufacture. Currently, waste plastic, tires, waste shingles and other high carbon content waste destined for landfill are being explored, or currently used, as an alternative supplemental fuels for use in cement kilns across NA. While this is an attractive, environmentally sustainable solution, significant knowledge gaps remain in our fundamental understanding of whether these alternative fuels may lead to increased air pollution emissions from cement kilns across NA. The long-term objective of using TEMPO is to advance fundamental understanding of uncharacterized air pollution emissions and to assess the actual or potential environmental and health impacts of these emissions from cement kilns across NA. TEMPO measurements will be made in concert with in-situ observations augmented by air dispersion, land-use regression and receptor modelling. This application of TEMPO follows on from current research on a series of bench scale and pilot studies for Lafarge Canada Inc., that investigated the change in combustion emissions from various mixtures of coal (C), petroleum coke (PC) and non-recyclable alternative fuels. From our work we demonstrated that using an alternative fuel mixture in a cement kiln has potential to reduce emissions of CO2 by 34%; reduce NOx by 80%, and reduce fuel SO2 emissions by 98%. We also provided evidence that there would be a significant reduction in the formation of secondary ground-level ozone (O3) and secondary PM2.5 in downwind stack plumes if alternative waste derived fuels are used. The application of air dispersion, source apportionment, land use regression; together with remote sensing offers a powerful set of tools with the potential to improve air pollution

  17. Tempo-spatial dynamics of water quality and its response to river flow in estuary of Taihu Lake based on GOCI imagery.

    Science.gov (United States)

    Du, Chenggong; Li, Yunmei; Wang, Qiao; Liu, Ge; Zheng, Zhubin; Mu, Meng; Li, Yuan

    2017-12-01

    Knowledge of tempo-spatial dynamics of water quality and its response to river flow is important for the management of lake water quality because river discharge associated with rainstorms can be an important source of pollutants to the estuary. Total phosphorus (TP), chlorophyll a (Chl-a), and total suspended matter (TSM) are important indexes of water quality and important factors influencing eutrophication and algal blooms. In this study, remote sensing was used to monitor these indexes to investigate the effects of river discharge on the estuary of Taihu Lake by the largest inflow river which is Chendong River using a total of 136 Geostationary Ocean Color Images (GOCI). In situ datasets collected during the four cruise experiments on Taihu Lake between 2011 and 2015 were used to develop the TP, Chl-a, and TSM inversion models based on simple empirical algorithms: 154 points for TP (mg/L), 114 for Chl-a (μg/L), and 181 for TSM (mg/L). The spatial and temporal changes of the concentration of the three parameters in the Chendong River estuary were analyzed by combining the GOCI data, the flow of the Chendong River, and meteorological data throughout the year in 2014. The several key findings are as follows: (1) In summer and autumn, TP, Chl-a, and TSM contents were significantly higher than in winter and spring. TP and Chl-a have a few similar distribution characteristics. And organic suspended matter in summer was the main reason for the increase of the TSM concentration. (2) The severe surface erosion in the rivers cannot be ignored; the high erodibility is an important factor in the increase of TP and TSM concentrations in the estuary. The concentration of the water quality parameter showed exponential decay with distance from the shore. The concentration decreased slowly after 12 km and then remained essentially constant. (3) TP content in the Chendong River estuary decreased under steady flow inputs and dramatically increased when the flow became large

  18. O tempo do cuidado e o tempo do mundo na Análise existencial heideggeriana

    OpenAIRE

    Borges-Duarte, Irene

    2013-01-01

    O artigo constitui uma abordagem da problemática do tempo na dupla perspectiva heideggeriana da ontologia fundamental e da análise existencial, nela fundada. Na primeira perspectiva, o tempo aparece formalmente como o tempo ex-stático que constitui a estrutura do cuidado. Na segunda, base da psicoterapia da Daseinsanalyse, o tempo é visto no seu contexto fáctico, ligado à prática vital quotidiana do ser-no-mundo-uns-com-os-outros de cada um. Esta concepção é relacionada com a visão do psic...

  19. Os tempos da prematuridade

    Directory of Open Access Journals (Sweden)

    Silvia Abu-Jamra Zornig

    Full Text Available Este trabalho tem por objetivo discutir a clínica psicanalítica com bebês, tendo como referência um projeto de pesquisa desenvolvido com bebês pré-termo internados e suas famílias (Hospital Fernandes Figueira/Fiocruz. Parte da concepção freudiana sobre o desamparo estrutural do ser humano para analisar as vicissitudes da constituição do sujeito a partir dos diferentes tempos que se instalam nos primórdios da subjetividade: um tempo de retroação relacionado aos fantasmas e desejos parentais, um tempo de construção (Winnicott e de continuidade relacionado aos cuidados maternos e um tempo descontínuo, traumático, que se refere aos bebês nascidos prematuramente.

  20. Preferred Dance Tempo

    DEFF Research Database (Denmark)

    Dahl, Sofia; Huron, David; Brod, Garvin

    2014-01-01

    predictors of preferred dance tempo in Experiment 1. A second experiment, where males and females were matched in terms of height, resulted in no significant correlation between sex and preferred dance tempo. In the matched sample, height was found to be the single best predictor but with a relatively small...... effect size. These results are consistent with a biomechanical “resonance” model of dancing....

  1. Tempo cambiamento invarianza

    CERN Document Server

    Toraldo di Francia, Giuliano

    1994-01-01

    Il tempo e la grammatica. Tra soggettivo e oggettivo. La scoperta dell'intersoggettivo. Qual è il tempo vero? Gl'invarianti. Le leggi classiche del mondo fisico. La probabilità, personaggio centrale. Irreversibilità, complessità, caos. Il tempo relativo. La storia. Si tratta di temi e riflessioni che riguardano le scienze dure della natura. "Quelle scienze, scrive l'autore, come spero di riuscire ad argomentare nelle pagine che seguono, oggi non sono più così separate e lontane dalle scienze storiche come furono in passato. Ci fu in quelle lezioni un problema di scelta: che cosa è essenziale offrire alla meditazione di chi intende dedicarsi alla ricerca e allo studio degli eventi storici".

  2. Automatic movie skimming with general tempo analysis

    Science.gov (United States)

    Lee, Shih-Hung; Yeh, Chia-Hung; Kuo, C. C. J.

    2003-11-01

    Story units are extracted by general tempo analysis including tempos analysis including tempos of audio and visual information in this research. Although many schemes have been proposed to successfully segment video data into shots using basic low-level features, how to group shots into meaningful units called story units is still a challenging problem. By focusing on a certain type of video such as sport or news, we can explore models with the specific application domain knowledge. For movie contents, many heuristic rules based on audiovisual clues have been proposed with limited success. We propose a method to extract story units using general tempo analysis. Experimental results are given to demonstrate the feasibility and efficiency of the proposed technique.

  3. A quarta revolução educacional: a mudança de tempos, espaços e relações na escola a partir do uso de tecnologias e da inclusão social / The fourth educational revolution: changes of time, space and relations in school based...

    Directory of Open Access Journals (Sweden)

    Ulisses F. Araújo

    2011-04-01

    Full Text Available Este artigo discute os movimentos de evolução da educação nos últimos séculos, buscando demonstrar como movimentos de democratização e universalização do acesso ao ensino promoveram a inclusão de todas as pessoas nos processos educativos. A escola, tal como a conhecemos, estruturada nos séculos XVIII e XIX sob princípios de exclusão e homogeneização, não parece estar dando conta das demandas de uma educação inclusiva, o que vem impactando as metas de qualidade do conhecimento almejadas pelas sociedades contemporâneas. Esse impasse vem demandando uma reinvenção da educação, que envolve transformações nos conteúdos, na forma e nas relações entre docentes e discentes dentro dos espaços educativos. Como exemplo de caminhos a serem seguidos para reinventar a educação, apresenta-se a estrutura de um curso de especialização que articula metodologias ativas de aprendizagem com novas e diversas Tecnologias de Informação e Comunicação e a preocupação com a ética pessoal e profissional.AbstractThis article discusses the evolution of education in recent centuries, trying to demonstrate how movements of democratization and universal access to education promoted the inclusion of all people in the educational processes. The school, as we know, structured in the eighteenth and nineteenth centuries on principles of exclusion and homogenization, there seems not to be catching on the demands of an inclusive education, which has been impacting the quality goals of knowledge desired by contemporary societies. This impasse has been demanding a re-invention of education, which involves changes in the content, form and relationships between teachers and students within the educational spaces. As an example of paths to be followed to re-invent education, is presented the structure of a specialization course which combines active learning methodologies with new and diverse Information Technology and Communication tools, and the

  4. Mortality tempo-adjustment: An empirical application

    Directory of Open Access Journals (Sweden)

    Marc Luy

    2006-12-01

    Full Text Available The number of scholars following the tempo approach in fertility continues to grow, whereas tempo-adjustment in mortality generally still is rejected. This rejection is irrational in principle, as the basic idea behind the tempo approach is independent of the kind of demographic event. Providing the first empirical application to a substantial problem, this paper shows that mortality tempo-adjustment can paint a different picture of current mortality conditions compared to conventional life expectancy. An application of the Bongaarts and Feeney method to the analysis of mortality differences between western and eastern Germany shows that the eastern German disadvantages still are considerably higher and that the mortality gap between the two entities began to narrow some years later than trends in conventional life expectancy suggest. Thus, the picture drawn by tempo-adjusted life expectancy fits the expected trends of changing mortality and also the self-reported health conditions of eastern and western Germans better than that painted by conventional life expectancy.

  5. Fenomenologia do tempo vivido no transtorno bipolar

    Directory of Open Access Journals (Sweden)

    Virginia Moreira

    Full Text Available Com base na tradição da psicopatologia fenomenológica, este artigo se propõe a contribuir para a compreensão do mundo vivido do paciente bipolar, marcado por uma forte alteração do tempo vivido. Realizamos uma descrição deste tempo vivido significado de forma diferente nas oscilações de humor chamadas de fase maníaca e fase melancólica. Pensado a partir da temporalidade, na fase melancólica, o bipolar parece parar no tempo, não se lança em um devir. Na fase maníaca, o sujeito vive demasiadamente um agora como se tivesse explodido sua biografia. Concluímos que estas fases, ou dois pólos opostos no funcionamento temporal patológico do sofrimento bipolar, constituem fundamentalmente um mesmo mundo vivido.

  6. Tempo and amplitude in growth.

    Science.gov (United States)

    Hermanussen, Michael

    2011-01-01

    Growth is defined as an increase of size over time with time usually defined as physical time. Yet, the rigid metric of physical time is not directly relevant to the internal dynamics of growth. Growth is linked to maturation. Children and adolescents differ in the tempo at which they mature. One calendar year differs in its meaning in a fast maturing, and in a slow maturing child. The slow child needs more calendar years for completing the same stage of maturity. Many characteristics in the human growth curve are tempo characteristics. Tempo - being fast or slow maturing - has to be carefully separated from amplitude - being tall or short. Several characteristic phenomena such as catch-up growth after periods of illness and starvation are largely tempo phenomena, and do usually not affect the amplitude component of growth. Applying Functional Data Analysis and Principal Component Analysis, the two main sources of height variance: tempo and amplitude can statistically be separate and quantified. Tempo appears to be more sensitive than amplitude to nutrition, health and environmental stress. An appropriate analysis of growth requires disentangling its two major components: amplitude and tempo. The assessment of the developmental tempo thus is an integral part of assessing child and adolescent growth. Though an Internet portal is currently available to process small amounts of height data (www.willi-will-wachsen.com) for separately determining amplitude and tempo in growth, there is urgent need of better and practical solutions for analyzing individual growth.

  7. Earnings with Condition Based Maintenance; Ganhos com manutencao preditiva baseada em dados de processo em tempo real

    Energy Technology Data Exchange (ETDEWEB)

    Barabas, Elizabeth [Softbrasil Automacao, Sao Paulo, SP (Brazil)

    2008-07-01

    Keeping active in perfect functioning is essential for any company. Today, the maintenance has been performed in most of the stops for maintenance. In a modern industrial environment, where the systems provide data and process information in real time, it is possible bring the performance of the plant to a optimized level, through the maintenance based on condition of equipment. This work described the earnings with CBM (Condition Based Maintenance)

  8. Tactus and Tempo in Organ Music from the German Baroque : a Study of Sources and Scores

    NARCIS (Netherlands)

    Dokter, J.R.

    2016-01-01

    Before the advent of the metronome (which was used to accurately gauge the speed of a composition) around the turn of the nineteenth century, Baroque composers used a system of time signatures, note values, and tempo words to encode relative tempo. This thesis traces tempo changes in German baroque

  9. La liberazione del tempo

    CERN Document Server

    Selleri, Franco

    2003-01-01

    Negli ultimi dieci anni ho lavorato alla descrizione dei fenomeni naturali da parte di osservatori in movimento. E' un problema che molti credono risolto una volta per tutte dalle trasformazioni di Lorentz della teoria della relatività speciale (TRS nel seguito), ma che in realtà era rimasto aperto per una serie di ragioni che esporrò. Sento di dover dire che ho trovato risultati molto importanti, anche se il giudizio finale sul loro valore non può certo essere il mio. Infatti la conclusione di questa ricerca è duplice: una spiegazione dei dati empirici migliore di quella relativistica, e l'eliminazione di quegli aspetti della TRS che fanno a pugni con il buon senso; il tutto grazie alla liberazione del tempo dall'asservimento alle coordinate spaziali cui era stato costretto nello spazio a quattro dimensioni di Minkowski. La faccenda è raccontata con dovizia di particolari in un libro recente [FS]. Nel presente articolo espongo gli aspetti salienti della ricerca lasciando da parte quelli matematici.

  10. Polysaccharide depolymerization from TEMPO-catalysis: Effect of TEMPO concentration.

    Science.gov (United States)

    Spier, Vivian C; Sierakowski, Maria Rita; Reed, Wayne F; de Freitas, Rilton A

    2017-08-15

    Polysaccharide TEMPO-oxidation was monitored using automatic continuous online monitoring of polymerization reactions (ACOMP). The products of oxidation, obtained at different pHs (9, 7 and 5) and different concentrations of catalyst TEMPO, were evaluated by Automatic Continuous Mixing (ACM) and Size Exclusion Chromatography (SEC). The degree of oxidation was higher at pH 9 and polysaccharide degradation was observed under different pH conditions, but was much higher without catalyst TEMPO. The rate constant (k) was dependent on reaction pH and TEMPO concentration. The amount of -COOH per g of polysaccharide, at pH 9, in the presence and absence of TEMPO was different, 0.215 and 0.395mmolg -1 , respectively. This suggested a secondary and non-selective polysaccharide oxidation occurring at a lower rate in the absence of catalyst. TEMPO protects the polysaccharide from degradation caused by secondary oxidant species, acting as a catalyst and "sacrificial molecule" at higher concentrations. Copyright © 2017 Elsevier Ltd. All rights reserved.

  11. Co-loading and intestine-specific delivery of multiple antioxidants in pH-responsive microspheres based on TEMPO-oxidized polysaccharides

    NARCIS (Netherlands)

    Shi, Mengxuan; Bai, Jie; Zhao, Liyun; Yu, Xinrui; Liang, Jingjing; Liu, Ying; Norde, Willem; Li, Yuan

    2017-01-01

    In this study, pH-responsive microspheres loaded with multiple antioxidants were developed for intestine-specific delivery and exhibited synergistic activity. They consist of chitosan (CS)-coated microspheres made of TEMPO-oxidized Konjac glucomannan (OKGM) polymers, of which the carboxyl (COO−)

  12. Efeito do tempo pós-prensagem da resina acrílica na alteração dimensional da base de prótese total

    Directory of Open Access Journals (Sweden)

    CONSANI Rafael Leonardo Xediek

    2001-01-01

    Full Text Available A alteração dimensional da base de prótese total foi verificada em função do tempo pós-prensagem da resina acrílica. Foram confeccionados 20 corpos-de-prova constituídos por modelo de gesso/base de cera, os quais posteriormente foram incluídos pela técnica de rotina em muflas metálicas. A resina acrílica termopolimerizável Clássico foi proporcionada e manipulada de acordo com as instruções do fabricante. Após prensagem final sob carga de 1.250 kgf em prensa de bancada, a resina acrílica foi submetida ao ciclo de polimerização em água aquecida a 74ºC por 9 horas, segundo os tempos pós-prensagem imediato, 6, 12 e 24 horas. As bases de resina foram fixadas no modelo com adesivo instantâneo e o conjunto seccionado lateralmente nas regiões correspondentes à distal dos caninos (A, mesial dos primeiros molares (B e palatina posterior (C. O desajuste entre base e modelo foi verificado com microscópio comparador em cinco posições para cada tipo de corte. Os resultados submetidos à análise estatística e ao teste de Tukey (5% mostraram que não houve diferença estatística significativa na comparação entre os tempos pós-prensagem imediato e de 6 horas, assim como entre os tempos de 12 e de 24 horas; entretanto, houve diferença significativa entre os grupos com prensagem imediata/após 6 horas e os grupos com prensagem após 12/24 horas.

  13. Absolute Memory for Tempo in Musicians and Non-Musicians.

    Directory of Open Access Journals (Sweden)

    Irene Gratton

    Full Text Available The ability to remember tempo (the perceived frequency of musical pulse without external references may be defined, by analogy with the notion of absolute pitch, as absolute tempo (AT. Anecdotal reports and sparse empirical evidence suggest that at least some individuals possess AT. However, to our knowledge, no systematic assessments of AT have been performed using laboratory tasks comparable to those assessing absolute pitch. In the present study, we operationalize AT as the ability to identify and reproduce tempo in the absence of rhythmic or melodic frames of reference and assess these abilities in musically trained and untrained participants. We asked 15 musicians and 15 non-musicians to listen to a seven-step `tempo scale' of metronome beats, each associated to a numerical label, and then to perform two memory tasks. In the first task, participants heard one of the tempi and attempted to report the correct label (identification task, in the second, they saw one label and attempted to tap the correct tempo (production task. A musical and visual excerpt was presented between successive trials as a distractor to prevent participants from using previous tempi as anchors. Thus, participants needed to encode tempo information with the corresponding label, store the information, and recall it to give the response. We found that more than half were able to perform above chance in at least one of the tasks, and that musical training differentiated between participants in identification, but not in production. These results suggest that AT is relatively wide-spread, relatively independent of musical training in tempo production, but further refined by training in tempo identification. We propose that at least in production, the underlying motor representations are related to tactus, a basic internal rhythmic period that may provide a body-based reference for encoding tempo.

  14. Absolute Memory for Tempo in Musicians and Non-Musicians

    Science.gov (United States)

    Brandimonte, Maria A.; Bruno, Nicola

    2016-01-01

    The ability to remember tempo (the perceived frequency of musical pulse) without external references may be defined, by analogy with the notion of absolute pitch, as absolute tempo (AT). Anecdotal reports and sparse empirical evidence suggest that at least some individuals possess AT. However, to our knowledge, no systematic assessments of AT have been performed using laboratory tasks comparable to those assessing absolute pitch. In the present study, we operationalize AT as the ability to identify and reproduce tempo in the absence of rhythmic or melodic frames of reference and assess these abilities in musically trained and untrained participants. We asked 15 musicians and 15 non-musicians to listen to a seven-step `tempo scale’ of metronome beats, each associated to a numerical label, and then to perform two memory tasks. In the first task, participants heard one of the tempi and attempted to report the correct label (identification task), in the second, they saw one label and attempted to tap the correct tempo (production task). A musical and visual excerpt was presented between successive trials as a distractor to prevent participants from using previous tempi as anchors. Thus, participants needed to encode tempo information with the corresponding label, store the information, and recall it to give the response. We found that more than half were able to perform above chance in at least one of the tasks, and that musical training differentiated between participants in identification, but not in production. These results suggest that AT is relatively wide-spread, relatively independent of musical training in tempo production, but further refined by training in tempo identification. We propose that at least in production, the underlying motor representations are related to tactus, a basic internal rhythmic period that may provide a body-based reference for encoding tempo. PMID:27760198

  15. Tempo, Finitude, Velhice e Fotografia

    Directory of Open Access Journals (Sweden)

    Joana Sanches Justo

    2013-10-01

    Full Text Available O presente artigo analisa e discute a experiência do tempo na velhice a partir das relações do idoso com a fotografia. Para tanto, realizamos oficinas de fotografia com um grupo de idosos, explorando com eles o sentido de morte do ato fotográfico, enquanto ato de congelamento e paralisação do tempo e também o sentido de prospecção do futuro ao poder criar, pelo ato fotográfico, uma imagem capaz de simbolizar a busca adiante na vida.

  16. Trust-based belief change

    OpenAIRE

    Lorini, Emiliano; Jiang, Guifei; Perrussel, Laurent

    2014-01-01

    International audience; We propose a modal logic that supports reasoning about trust-based belief change. The term trust-based belief change refers to belief change that depends on the degree of trust the receiver has in the source of information.

  17. EFECTO DE DOS ANTIOXIDANTES (TEMPO Y TEMPOL) EN LA CRIOPRESERVACIÓN DE SEMEN OVINO EMPLEANDO UN DILUTOR EN BASE A TRIS.

    OpenAIRE

    Ruiz G., Luis; Laboratorio de Reproducción Animal, Facultad de Medicina Veterinaria, Universidad Nacional Mayor de San Marcos, Lima; Santiani A., Alexei; Laboratorio de Reproducción Animal, Facultad de Medicina Veterinaria, Universidad Nacional Mayor de San Marcos, Lima; Sandoval M., Rocío; Laboratorio de Reproducción Animal, Facultad de Medicina Veterinaria, Universidad Nacional Mayor de San Marcos, Lima; Huanca L., Wilfredo; Laboratorio de Reproducción Animal, Facultad de Medicina Veterinaria, Universidad Nacional Mayor de San Marcos, Lima Perú.; Delgado C., Alfredo; Clínica de Animales Mayores, Facultad de Medicina Veterinaria, Universidad Nacional Mayor de San Marcos, Lima-Perú.; Coronado S., Luis; Laboratorio de Producción Agropecuaria, Facultad de Medicina Veterinaria, Universidad Nacional Mayor de San Marcos, Lima; Alzamora P., César; Laboratorio de Producción Agropecuaria, Facultad de Medicina Veterinaria, Universidad Nacional Mayor de San Marcos, Lima

    2012-01-01

    Se emplearon 32 muestras de semen procedentes de cuatro ovinos a fin de ser criopreservadas con la adición dos antioxidantes: Tempo (2,2,6,6 tetrametil-1-piperidiniloxil) y Tempol (4-hidroxi 2,2,6,6 tetrametil-1-piperidiniloxil), en concentraciones de 0.5, 1.0 y 2.5 mM, para evaluar el efecto postdescongelamiento que pudieran tener sobre la motilidad progresiva, la viabilidad e integridad acrosomal y la capacitación espermática prematura. En cada concentración de los dos antioxidantes y del g...

  18. Influence of Tempo and Rhythmic Unit in Musical Emotion Regulation.

    Science.gov (United States)

    Fernández-Sotos, Alicia; Fernández-Caballero, Antonio; Latorre, José M

    2016-01-01

    This article is based on the assumption of musical power to change the listener's mood. The paper studies the outcome of two experiments on the regulation of emotional states in a series of participants who listen to different auditions. The present research focuses on note value, an important musical cue related to rhythm. The influence of two concepts linked to note value is analyzed separately and discussed together. The two musical cues under investigation are tempo and rhythmic unit. The participants are asked to label music fragments by using opposite meaningful words belonging to four semantic scales, namely "Tension" (ranging from Relaxing to Stressing), "Expressiveness" (Expressionless to Expressive), "Amusement" (Boring to Amusing) and "Attractiveness" (Pleasant to Unpleasant). The participants also have to indicate how much they feel certain basic emotions while listening to each music excerpt. The rated emotions are "Happiness," "Surprise," and "Sadness." This study makes it possible to draw some interesting conclusions about the associations between note value and emotions.

  19. Relating Redox Properties of Polyvinylamine-g-TEMPO/Laccase Hydrogel Complexes to Cellulose Oxidation.

    Science.gov (United States)

    Fu, Qiang; Sutherland, Alexander; Gustafsson, Emil; Ali, M Monsur; Soleymani, Leyla; Pelton, Robert

    2017-08-15

    The structure and electrochemical properties of adsorbed complexes based on mixtures of polyvinylamine-g-TEMPO (PVAm-T) and laccase were related to the ability of the adsorbed complexes to oxidize cellulose. PVAm-T10 with 10% of the amines bearing TEMPO moieties (i.e., DS = 10%), adsorbed onto gold sulfonate EQCM-D sensor surfaces giving a hydrogel film that was 7 nm thick, 89% water, and encasing laccase (200 mM) and TEMPO moieties (33 mM). For DS values >10%, all of the TEMPOs in the hydrogel film were redox-active in that they could be oxidized by the electrode. With hydrogel layers made with lower-DS PVAm-Ts, only about half of the TEMPOs were redox-active; 10% DS appears to be a percolation threshold for complete TEMPO-to-TEMPO electron transport. In parallel experiments with hydrogel complexes adsorbed onto regenerated cellulose films, the aldehyde concentrations increased monotonically with the density of redox-active TEMPO moieties in the adsorbed hydrogel. The maximum density of aldehydes was 0.24 μmol/m2, about 10 times less than the theoretical concentration of primary hydroxyl groups exposed on crystalline cellulose surfaces. Previous work showed that PVAm-T/laccase complexes are effective adhesives between wet cellulose surfaces when the DS is >10%. This work supports the explanation that TEMPO-to-TEMPO electron transport is required for the generation of aldehydes necessary for wet adhesion to PVAm.

  20. Mortality Tempo: A Guide for the Skeptic

    Directory of Open Access Journals (Sweden)

    Griffith Feeney

    2011-09-01

    Full Text Available The idea of mortality tempo effects derives from the idea of fertility tempo effects, which were introduced by Norman B. Ryder and are widely known and accepted. Given the essential similarity of the ideas, it might be regarded as curious that mortality tempo effects have only recently been recognized and are not as yet generally accepted. The explanation for this may be that mortality tempo effects have implications that seem to be at variance with established ways of modeling and analyzing mortality and population dynamics. This paper develops a discrete approach to describing and analyzing mortality tempo effects. The discrete approach is mathematically undemanding, yet powerful. It is used here, for example, to define age-specific tempo effects. The focus of this work is the measurement of length of life in empirical populations. It is shown that any empirical population may be approximated by a suitably constructed discrete model population.

  1. O TEMPO, O TRABALHO E O SER SOCIAL PROFESSOR PESQUISADOR

    OpenAIRE

    Silva Junior, João dos Reis; Lucena, Carlos Alberto

    2014-01-01

    Este artigo tenta analisar o movimento da dimensão do tempo contemporâneo na sociedade capitalista. A existência da humanidade no presente e suas prerrogativas, utopias, sonhos e desejos aponta o desafio da percepção de um conceito de tempo como uma construção cultural de base materialista. Esses são pressupostos utilizados para uma crítica radical às condições de trabalho na Instituição Universitária Pública Brasileira. A mundialização da economia expressa pelo capital financeiro redefine o ...

  2. TEMPO-functionalized zinc phthalocyanine: synthesis, magnetic properties, and its utility for electrochemical sensing of ascorbic acid.

    Science.gov (United States)

    Korkut, Sibel Eken; Akyüz, Duygu; Özdoğan, Kemal; Yerli, Yusuf; Koca, Atıf; Şener, M Kasım

    2016-02-21

    Zinc(ii) phthalocyanine (TEMPO-ZnPc), peripherally functionalized with 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO) radicals is synthesized and its magneto structural and electrochemical behaviors are investigated. TEMPO-ZnPc shows multi-electron ring based reduction reactions and a TEMPO based oxidation reaction. Spectroelectrochemical measurements support these peak assignments. TEMPO-ZnPc is tested as a homogeneous and heterogeneous ascorbic acid (AA) sensor. Disappearance of TEMPO-ZnPc based reduction processes and the observation of new waves at around 0 and 1.20 V with respect to increasing AA concentration indicate the interaction of TEMPO-ZnPc with AA and usability of the complex as an electrochemical AA sensor. For practical usage as heterogeneous electrocatalysts for AA sensing, a glassy carbon electrode (GCE) is coated with TEMPO-ZnPc (GCE/TEMPO-ZnPc) and this modified electrode is tested as a heterogeneous AA sensor. The redox peak of GCE/TEMPO-ZnPc at 0.81 V decreases the peak current while a new wave is observed at 0.65 V during the titration of the electrolyte with AA. GCE/TEMPO-ZnPc sense AA with 1.75 × 10(-6) mol dm(-3) LOD with a sensitivity of 1.89 × 10(3) A cm mol(-1).

  3. Mudanças na matéria orgânica do solo causadas pelo tempo de adoção de um sistema agrossilvopastoril com eucalipto Changes in soil organic matter along a chronosequence of an agrosilvipastoral system of eucalypt cultivation

    Directory of Open Access Journals (Sweden)

    Leonardus Vergutz

    2010-02-01

    (LOM, N in the LOM, and C oxidizable by potassium permanganate, the labile carbon (LC. From these data, the CMI proposed by Blair et al. (1995 was calculated (CMI LC, as well as the modified CMI, which is based on C in the LOM (CMI LOM. In the planting row, the TOC stocks in the 0-100 cm layer remained stable over time, while in-between the rows the TOC stocks initially decreased and then recover over time, but have yet to return to the level found in the native vegetation soil. The trend for the TN stock (0-100 cm was similar for both in and between the eucalypt rows. After a sharp initial decrease, the TN stocks recovered over the years. However, this increase was not sustained and at the end of the cycle the TN stocks were lower than the original values found for the soil under native vegetation. Major changes were observed in the free LOM fractions, confirming its great sensitivity to management changes. More free LOM C and N were lost in-between than in the rows. Labile C, as well as the CMI, were found not sensitive to describe SOM changes along the implantation time, whereas the CMI CLOM adjusted well for all soil layers. In addition, it was best correlated with TOC and is therefore more adequate to compare the studied cropping system. These results show the importance of studying deeper soil layers; since the loss of C at greater soil depths can be relatively high and difficult to recover. The agrosilvipastoral systems induce a decrease in soil organic C in the upper layers and the time to recover the original stocks was beyond the study period. The fraction of free light organic matter was most sensitive to the management.

  4. Tropospheric Emissions: Monitoring of Pollution (TEMPO)

    Science.gov (United States)

    Chance, Kelly; Liu, Xiong; Suleiman, Raid M.; Flittner, David E.; Al-Saadi, Jassim; Janz, Scott J.

    2014-06-01

    TEMPO, selected by NASA as the first Earth Venture Instrument, will measure atmospheric pollution for greater North America from space using ultraviolet and visible spectroscopy. TEMPO measures from Mexico City to the Canadian oil sands, and from the Atlantic to the Pacific, hourly and at high spatial resolution. TEMPO provides a tropospheric measurement suite that includes the key elements of tropospheric air pollution chemistry. Measurements are from geostationary (GEO) orbit, to capture the inherent high variability in the diurnal cycle of emissions and chemistry. The small product spatial footprint resolves pollution sources at sub-urban scale. Together, this temporal and spatial resolution improves emission inventories, monitors population exposure, and enables effective emission-control strategies. TEMPO takes advantage of a GEO host spacecraft to provide a modest-cost mission that measures the spectra required to retrieve O3, NO2, SO2, H2CO, C2H2O2, H2O, aerosols, cloud parameters, and UVB radiation. TEMPO thus measures the major elements, directly or by proxy, in the tropospheric O3 chemistry cycle. Multi-spectral observations provide sensitivity to O3 in the lowermost troposphere, reducing uncertainty in air quality predictions by 50 %. TEMPO quantifies and tracks the evolution of aerosol loading. It provides near-real-time air quality products that will be made widely, publicly available. TEMPO makes the first tropospheric trace gas measurements from GEO, by building on the heritage of five spectrometers flown in low-earth-orbit (LEO). These LEO instruments measure the needed spectra, although at coarse spatial and temporal resolutions, to the precisions required for TEMPO and use retrieval algorithms developed for them by TEMPO Science Team members and currently running in operational environments. This makes TEMPO an innovative use of a well-proven technique, able to produce a revolutionary data set. TEMPO provides much of the atmospheric measurement

  5. Santo Agostinho, leitor do nosso tempo

    OpenAIRE

    Gonçalves, Joaquim Cerqueira

    1989-01-01

    Para Agostinho, o real, designadamente a sua expressão humana, é um intenso presente, transbordante, prenhe de passado e de futuro, um tempo que se transforma em sinal positivo, se enquadrado na unidade da história.

  6. Tempo in Baroque music and dance

    OpenAIRE

    Coorevits, Esther; Moelants, Dirk

    2014-01-01

    Recently, there is a growing interest in studies on the relationship between music and movement. Insight in the relation between dance and music is particularly important for the Baroque period, as music and dance were directly related, even if music was not used to dance to. In Baroque dance, particular dance steps and the character of different dance types demand a specific tempo. However, in musical performance practice, the tempo variation can be very large and the link with the original ...

  7. Il tempo. Considerazioni psico-antropologiche

    OpenAIRE

    Giuseppe Licari,; Ivan Formica

    2016-01-01

    La riflessione che proponiamo in questo focus nasce dalle stimolazioni degli articoli presenti in questo numero. Una premessa di tipo antropologico e psicologico per introdurre il lettore ai diversi contributi proposti. Una riflessione che considera, innanzitutto, il ruolo della cultura e il contesto dove si sviluppano le azioni umane. Nonché il significato del tempo e della sua misurazione che delinea la nozione di durata a partire dalla comparsa della clessidra, nonché il tempo psicologico ...

  8. Os fundamentos da identidade européia na antiguidade, na idade média e nos tempos modernos = The bases of European identity in antiquity, middle ages and in modernity

    Directory of Open Access Journals (Sweden)

    Peter Johann Mainka

    2011-01-01

    Full Text Available Depois do fim da Segunda Guerra Mundial iniciou-se o processo da unificação européia, compreendendo todas as áreas do Estado e da sociedade (legislação, jurisdição, política, economia, instituições, etc. dos 27 Estados, tão diferentes quanto às tradições e à sua história, que compõem, no momento, a União Européia. Porém, quais são os fundamentos intelectuais e os valores culturais, quais são as idéias e memórias, que dão à Europa uma identidade coerente e compartilhada, em princípio, por toda a população européia de atualmente, quase 500 milhões de pessoas? Esses alicerces intelectuais da Europa remontam à Antiguidade, à Idade Média e aos Tempos Modernos. Este trabalho pretende apresentar alguns desses fundamentos comuns da Europa, postos na Idade Média e nos Tempos Modernos (por exemplo o Cristianismo, o Humanismo e o Iluminismo, e discutir a sua importância para a identidade européia.The process of European unification started immediately after the II World War. It comprised all the areas of State and society (legislation, jurisdiction, politics, economy, institutions and others in the twenty-seven countries, highly different in their traditions and history and which now make up the European Community. Which are the intellectual bases and the cultural values, which are the ideas and memories that give Europe a coherent identity shared, at least theoretically, by the European population of approximately 500 million people? Europe's intellectual bases go back to Antiquide, to the Middle Ages and to Modernity. Current essay will provide some of Europe's common principles posited in the Middle Ages and in Modernity (for instance, Christianity, Humanism and Illuminism and will discuss their importance within Euopean identity.

  9. Optimizing power output by varying repetition tempo.

    Science.gov (United States)

    Pryor, Riana R; Sforzo, Gary A; King, Deborah L

    2011-11-01

    The effects of varying interrepetition rest and eccentric velocity on power output (PO) and the number of repetitions performed during a bench press set were examined in 24 college-aged resistance trained men. On 6 separate occasions, subjects performed a set of bench press at 80% 1 repetition maximum until volitional fatigue. For each of the 6 repetition tempo trials, the bench press set was paced by metronome to a unique repetition tempo involving a combination of the following: interrepetition rest of 0 or 4 seconds; eccentric velocity of 1 or 4 seconds and bottom rest of 0 or 3 seconds. The velocity of concentric contraction was maximal during all 6 tempo trials. During each trial, video data were captured to determine PO variables and number of successful repetitions completed at each tempo. One-way repeated measures analysis of variance showed tempos with a fast eccentric phase (1 second), and no bottom rest produced significantly greater (p ≤ 0.05) PO and repetitions than tempos involving slower eccentric velocity (4 seconds) or greater bottom rest (4 seconds). This combination of greater repetitions and PO resulted in a greater volume of work. Varying interrepetition rest (1 or 4 seconds) did not significantly affect PO or repetitions. The results of this study support the use of fast eccentric speed and no bottom rest during acute performance testing to maximize PO and number of repetitions during a set of bench press.

  10. Effect of music tempo on task performance.

    Science.gov (United States)

    Mayfield, C; Moss, S

    1989-12-01

    Two studies were conducted to evaluate the effect of music tempo on task performance. In Study 1, 44 undergraduate business students were asked to be "workers" in a stock market project by collecting closing stock prices and calculating the percentage of change in the price from week to week. Subjects were randomly divided into groups such that they either listened to fast-paced music while they worked, to slow-paced music, or to no music. Analyses of variance and covariance were conducted on both the quantity and quality of the subjects' work, using music listening habits as a covariate. There were no differences in either the quantity or quality of the work produced by the groups. There were some methodological concerns regarding Study 1, so a second study was conducted. The 70 undergraduate business students in Study 2 completed the same task under the same music conditions as in Study 1. Analyses of variance indicated women performed significantly better than men, performance was significantly higher in the rock condition than in the heartbeat condition, and subjects in the rock condition had a significantly higher perceived level of distraction by the music.

  11. Oxidation of cashew tree gum exudate polysaccharide with TEMPO reagent

    Energy Technology Data Exchange (ETDEWEB)

    Cunha, Pablyana L.R.; Maciel, Jeanny S.; Paula, Regina C.M. de; Feitosa, Judith P.A. [Universidade Federal do Ceara, Fortaleza, CE (Brazil). Dept. de Quimica Organica e Inorganica; Sierakowski, Maria Rita [Universidade Federal do Parana, Curitiba, PR (Brazil). Dept. de Quimica]. E-mail: judith@dqoi.ufc.br

    2007-07-01

    Cashew gum (CG), an exudate polysaccharide from Anacardium occidentale trees, was oxidized with TEMPO reagent and the product (CGOX) characterized by spectroscopic techniques (FTIR and NMR), chromatographic analyses (HPLC and GPC), viscosity measurements and thermal analysis (TGA). The yield of the reaction product was 96%. The uronic acid content in starting gum (7.2 m%) was increased to 36 m%. The degree of oxidation based on free galactose and glucose units was 68%. NMR data show that oxidation occurred preferentially at primary carbons of galactose units. High degradation degree after oxidation was estimated by the difference on the expected and observed {eta}{sub CGOX}/{eta}{sub CG} ratio. The presence of organic and inorganic impurities in the new polyelectrolyte was detected by TGA. A less thermally stable cashew gum is formed after the oxidation with TEMPO based on initial decomposition temperature and IPDT. (author)

  12. I misteri del tempo l'universo dopo Einstein

    CERN Document Server

    Davies, Paul

    1996-01-01

    Quando fu esattamente l'inizio del tempo? Il viaggio nel tempo è realtà o fantasia? Sono possibili gli esperimenti con il tempo? Questo importante saggio indaga sull'enigma del tempo, un tema affascinante da sempre al centro delle speculazioni scientifiche e religiose.

  13. Influence of Tempo and Rhythmic Unit in Musical Emotion Regulation

    Directory of Open Access Journals (Sweden)

    Alicia Fernández-Sotos

    2016-08-01

    Full Text Available This article is based on the assumption of musical power to change the listener’s mood. The paper studies the outcome of two experiments on the regulation of emotional states in a series of participants who listen to different auditions. The present research focuses on note value, an important musical cue related to rhythm. The influence of two concepts linked to note value is analyzed separately and discussed together. The two musical cues under investigation are tempo and rhythmic unit. The participants are asked to label music fragments by using opposite meaningful words belonging to four semantic scales, namely Tension (ranging from Relaxing to Stressing, Expressiveness (Expressionless to Expressive, Amusement (Boring to Amusing and Attractiveness (Pleasant to Unpleasant. The participants also have to indicate how much they feel certain basic emotions while listening to each music excerpt. The rated emotions are Happiness, Surprise, and Sadness. This study makes it possible to draw some interesting conclusions about the associations between note value and emotions.

  14. DNP with the free radicals deuterated TEMPO and deuterated oxo-TEMPO

    Science.gov (United States)

    van den Brandt, B.; Bunyatova, E. I.; Hautle, P.; Konter, J. A.

    2004-06-01

    The results of measurements performed to assess the potential of deuterated TEMPO and deuterated oxo-TEMPO for DNP are presented. These free radicals became available only recently. Polarization and relaxation processes of protons and deuterons in various deuterated alcohols and deuterated polymers have been investigated. More than 40% deuteron polarization has been obtained in samples of fully deuterated polystyrene.

  15. DNP with the free radicals deuterated TEMPO and deuterated oxo-TEMPO

    Energy Technology Data Exchange (ETDEWEB)

    Brandt, B. van den E-mail: ben.vandenbrandt@psi.ch; Bunyatova, E.I.; Hautle, P.; Konter, J.A

    2004-06-21

    The results of measurements performed to assess the potential of deuterated TEMPO and deuterated oxo-TEMPO for DNP are presented. These free radicals became available only recently. Polarization and relaxation processes of protons and deuterons in various deuterated alcohols and deuterated polymers have been investigated. More than 40% deuteron polarization has been obtained in samples of fully deuterated polystyrene.

  16. Cochlear implant users rely on tempo rather than on pitch information during perception of musical emotion.

    Science.gov (United States)

    Caldwell, Meredith; Rankin, Summer K; Jiradejvong, Patpong; Carver, Courtney; Limb, Charles J

    2015-09-01

    The purpose of this study was to investigate the extent to which cochlear implant (CI) users rely on tempo and mode in perception of musical emotion when compared with normal hearing (NH) individuals. A test battery of novel four-bar melodies was created and adapted to four permutations with alterations of tonality (major vs. minor) and tempo (presto vs. largo), resulting in non-ambiguous (major key/fast tempo and minor key/slow tempo) and ambiguous (major key/slow tempo, and minor key/fast tempo) musical stimuli. Both CI and NH participants listened to each clip and provided emotional ratings on a Likert scale of +5 (happy) to -5 (sad). A three-way ANOVA demonstrated an overall effect for tempo in both groups, and an overall effect for mode in the NH group. The CI group rated stimuli of the same tempo similarly, regardless of changes in mode, whereas the NH group did not. A subgroup analysis indicated the same effects in both musician and non-musician CI users and NH listeners. The results suggest that the CI group relied more heavily on tempo than mode in making musical emotion decisions. The subgroup analysis further suggests that level of musical training did not significantly impact this finding. CI users weigh temporal cues more heavily than pitch cues in inferring musical emotion. These findings highlight the significant disadvantage of CI users in comparison with NH listeners for music perception, particularly during recognition of musical emotion, a critically important feature of music.

  17. Characterization of TEMPO-oxidized bacterial cellulose scaffolds for tissue engineering applications

    Energy Technology Data Exchange (ETDEWEB)

    Luo, Honglin [School of Materials Science and Engineering, Tianjin University, Tianjin Key Laboratory of Composite and Functional Materials, Tianjin 300072 (China); Xiong, Guangyao [School of Mechanical and Electrical Engineering, East China Jiaotong University, Nanchang, Jiangxi 330013 (China); Hu, Da [School of Materials Science and Engineering, Tianjin University, Tianjin Key Laboratory of Composite and Functional Materials, Tianjin 300072 (China); Ren, Kaijing [Department of Joint Surgery, Tianjin Hospital, Tianjin 300211 (China); Yao, Fanglian; Zhu, Yong [School of Chemical Engineering, Tianjin University, Tianjin 300072 (China); Gao, Chuan [School of Materials Science and Engineering, Tianjin University, Tianjin Key Laboratory of Composite and Functional Materials, Tianjin 300072 (China); Wan, Yizao, E-mail: yzwantju@126.com [School of Materials Science and Engineering, Tianjin University, Tianjin Key Laboratory of Composite and Functional Materials, Tianjin 300072 (China)

    2013-12-16

    Introduction of active groups on the surface of bacterial cellulose (BC) nanofibers is one of the promising routes of tailoring the performance of BC scaffolds for tissue engineering. This paper reported the introduction of aldehyde groups to BC nanofibers by 2,2,6,6-tetramethylpyperidine-1-oxy radical (TEMPO)-mediated oxidation and evaluation of the potential of the TEMPO-oxidized BC as tissue engineering scaffolds. Periodate oxidation was also conducted for comparison. Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) analyses were carried out to determine the existence of aldehyde groups on BC nanofibers and the crystallinity. In addition, properties relevant to scaffold applications such as morphology, fiber diameter, mechanical properties, and in vitro degradation were characterized. The results indicated that periodate oxidation could introduce free aldehyde to BC nanofibers and the free aldehyde groups on the TEMPO-oxidized BC tended to transfer to acetal groups. It was also found that the advantageous 3D structure of BC scaffolds remained unchanged and that no significant changes in morphology, fiber diameter, tensile structure and in vitro degradation were found after TEMPO-mediated oxidation while significant differences were observed upon periodate oxidation. The present study revealed that TEMPO-oxidation could impart BC scaffolds with new functions while did not degrade their intrinsic advantages. - Highlights: • TEMPO-mediated oxidation on BC scaffold for tissue engineering use was conducted. • TEMPO-mediated oxidation did not degrade the intrinsic advantages of BC scaffold. • TEMPO-mediated oxidation could impart BC scaffold with new functional groups. • Feasibility of TEMPO-oxidized BC as tissue engineering scaffold was confirmed.

  18. Nap environment control considering respiration rate and music tempo by using sensor agent robot

    Science.gov (United States)

    Nakaso, Sayaka; Mita, Akira

    2015-03-01

    We propose a system that controls a nap environment considering respiration rates and music tempo by using a sensor agent robot. The proposed system consists of two sub-systems. The first sub-system measures respiration rates using optical flow. We conducted preparatory experiments to verify the accuracy of this sub-system. The experimental results showed that this sub-system can measure the respiration rates accurately despite several positional relationships. It was also shown that the accuracy could be affected by clothes, movements and light. The second sub-system we constructed was the music play sub-system that chooses music with the certain tempo corresponding to the respiration rates measured by the first sub-system. We conducted verification experiments to verify the effectiveness of this music play sub-system. The experimental results showed the effectiveness of varying music tempo based on the respiration rates in taking a nap. We also demonstrated this system in a real environment; a subject entered into the room being followed by ebioNα. When the subject was considered sleeping, ebioNα started measuring respiration rates, controlling music based on the respiration rates. As a result, we showed that this system could be realized. As a next step, we would like to improve this system to a nap environment control system to be used in offices. To realize this, we need to update the first sub-system measuring respiration rates by removing disturbances. We also need to upgrade music play sub-system considering the numbers of tunes, the kinds of music and time to change music.

  19. Tempo, tempo, tempo: reflexões sobre o tempo histórico e o ensino de história

    Directory of Open Access Journals (Sweden)

    Luiza Rafaela Bezerra Sarraff

    2016-09-01

    Full Text Available O tempo e sua passagem pela vida humana sempre foram objetos de reflexão dos seres humanos. Ao historiadores, o tempo é um elemento central, afinal, a “História é a ciência dos homens no tempo”, como disse Marc Bloch. Neste sentido, o presente artigo visa fazer um breve balanço bibliográfico sobre a questão do tempo histórico, focando na teoria de Reinhart Koselleck e Jörn Rüsen. Ao fim, tentaremos aproximar a reflexão destes autores a área de ensino de História.

  20. MUSIC TEMPO'S EFFECT ON EXERCISE PERFORMANCE: COMMENT ON DYER AND McKUNE.

    Science.gov (United States)

    Nakamura, Priscila Missaki

    2015-06-01

    Dyer and McKune (2013) stated that music tempo has no influence on performance, physiological, and psychophysical variables in well-trained cyclists during high intensity endurance tasks. However, there are important limitations in the methodology of the study. The participants' music preferences and tempo change were not well measured. It is not possible to affirm that music tempo does not influence athletes' performance. Potential areas of future research include: (a) use of instruments to assess the qualities of music; (b) standardizing music of tempo according to exercise type (e.g., running, cycling, etc.); (c) considering training level of the participants (i.e., athletes and non-athletes); and (d) use of instruments to assess concentration during exercise.

  1. Il tempo. Considerazioni psico-antropologiche

    Directory of Open Access Journals (Sweden)

    Giuseppe Licari

    2016-12-01

    Full Text Available La riflessione che proponiamo in questo focus nasce dalle stimolazioni degli articoli presenti in questo numero. Una premessa di tipo antropologico e psicologico per introdurre il lettore ai diversi contributi proposti. Una riflessione che considera, innanzitutto, il ruolo della cultura e il contesto dove si sviluppano le azioni umane. Nonché il significato del tempo e della sua misurazione che delinea la nozione di durata a partire dalla comparsa della clessidra, nonché il tempo psicologico riferibile più direttamente ai contributi che compaiono in questo numero.

  2. Particle Filtering Applied to Musical Tempo Tracking

    Directory of Open Access Journals (Sweden)

    Malcolm D. Macleod

    2004-11-01

    Full Text Available This paper explores the use of particle filters for beat tracking in musical audio examples. The aim is to estimate the time-varying tempo process and to find the time locations of beats, as defined by human perception. Two alternative algorithms are presented, one which performs Rao-Blackwellisation to produce an almost deterministic formulation while the second is a formulation which models tempo as a Brownian motion process. The algorithms have been tested on a large and varied database of examples and results are comparable with the current state of the art. The deterministic algorithm gives the better performance of the two algorithms.

  3. O impacto do tempo de pendência das patentes na trajetória de crescimento: uma análise com base no modelo schumpeteriano de crescimento endógeno com avanço de qualidade

    Directory of Open Access Journals (Sweden)

    Fábio Rodrigues de Moura

    2014-03-01

    Full Text Available O objetivo deste trabalho é analisar o impacto do tempo de pendência das patentes sobre a trajetória de crescimento equilibrado da economia. Trabalhamos com a hipótese de que o tempo de pendência representa um período de incerteza para os agentes inovativos, o que afeta os esforços de P&D. Para operacionalizar nossas hipóteses utilizamos o modelo schumpeteriano de crescimento endógeno com avanço de qualidade, baseado em Grossman e Helpman (1991a,b e Aghion e Howitt (1992. Nossos resultados mostram que o tempo de pendência tem um impacto negativo sobre o crescimento e o bem-estar da economia, de forma que períodos mais longos de espera pela decisão da patente geram uma maior perda em termos de crescimento. Isto sugere a necessidade de políticas que visem a reduzir, de forma eficiente, o tempo de exame das patentes.

  4. Converting Paper into Hardware: A Status of the TEMPO Instrument Design and Manufacturing

    Science.gov (United States)

    Nicks, D. K., Jr.; Flittner, D. E.; Chance, K.; Liu, X.; Al-Saadi, J. A.; Pennington, W. F.; Suleiman, R. M.; Rosenbaum, D. M.; Canova, B.; Baker, B.; Lasnik, J.

    2015-12-01

    The Tropospheric Emissions: Monitoring of Pollution (TEMPO) instrument is part of NASA's Earth Venture Instrument (EVI) program, and will be the first hosted payload sensor to make tropospheric gas observations from geostationary (GEO) orbit using an ultraviolet/visible spectrometer. The instrument is designed to provide key trace gas measurements important to understanding tropospheric air pollution chemistry. The baseline design measures ozone (O3), nitrogen dioxide (NO2), and formaldehyde (H2CO). The TEMPO instrument will provide hourly daylight measurements of these trace gases on urban-regional spatial scales. These remote sensing measurements augment current ground-based air quality measurements and will offer improvements in air quality modeling and prediction. The TEMPO project has completed its confirmation review as well as the Critical Design Review (CDR). The updated TEMPO design, instrument performance estimates and technical challenges will be presented.

  5. Tropospheric emissions: Monitoring of pollution (TEMPO)

    Science.gov (United States)

    Zoogman, P.; Liu, X.; Suleiman, R. M.; Pennington, W. F.; Flittner, D. E.; Al-Saadi, J. A.; Hilton, B. B.; Nicks, D. K.; Newchurch, M. J.; Carr, J. L.; Janz, S. J.; Andraschko, M. R.; Arola, A.; Baker, B. D.; Canova, B. P.; Chan Miller, C.; Cohen, R. C.; Davis, J. E.; Dussault, M. E.; Edwards, D. P.; Fishman, J.; Ghulam, A.; González Abad, G.; Grutter, M.; Herman, J. R.; Houck, J.; Jacob, D. J.; Joiner, J.; Kerridge, B. J.; Kim, J.; Krotkov, N. A.; Lamsal, L.; Li, C.; Lindfors, A.; Martin, R. V.; McElroy, C. T.; McLinden, C.; Natraj, V.; Neil, D. O.; Nowlan, C. R.; O`Sullivan, E. J.; Palmer, P. I.; Pierce, R. B.; Pippin, M. R.; Saiz-Lopez, A.; Spurr, R. J. D.; Szykman, J. J.; Torres, O.; Veefkind, J. P.; Veihelmann, B.; Wang, H.; Wang, J.; Chance, K.

    2017-01-01

    TEMPO was selected in 2012 by NASA as the first Earth Venture Instrument, for launch between 2018 and 2021. It will measure atmospheric pollution for greater North America from space using ultraviolet and visible spectroscopy. TEMPO observes from Mexico City, Cuba, and the Bahamas to the Canadian oil sands, and from the Atlantic to the Pacific, hourly and at high spatial resolution ( 2.1 km N/S×4.4 km E/W at 36.5°N, 100°W). TEMPO provides a tropospheric measurement suite that includes the key elements of tropospheric air pollution chemistry, as well as contributing to carbon cycle knowledge. Measurements are made hourly from geostationary (GEO) orbit, to capture the high variability present in the diurnal cycle of emissions and chemistry that are unobservable from current low-Earth orbit (LEO) satellites that measure once per day. The small product spatial footprint resolves pollution sources at sub-urban scale. Together, this temporal and spatial resolution improves emission inventories, monitors population exposure, and enables effective emission-control strategies. TEMPO takes advantage of a commercial GEO host spacecraft to provide a modest cost mission that measures the spectra required to retrieve ozone (O3), nitrogen dioxide (NO2), sulfur dioxide (SO2), formaldehyde (H2CO), glyoxal (C2H2O2), bromine monoxide (BrO), IO (iodine monoxide), water vapor, aerosols, cloud parameters, ultraviolet radiation, and foliage properties. TEMPO thus measures the major elements, directly or by proxy, in the tropospheric O3 chemistry cycle. Multi-spectral observations provide sensitivity to O3 in the lowermost troposphere, substantially reducing uncertainty in air quality predictions. TEMPO quantifies and tracks the evolution of aerosol loading. It provides these near-real-time air quality products that will be made publicly available. TEMPO will launch at a prime time to be the North American component of the global geostationary constellation of pollution monitoring

  6. Tropospheric Emissions: Monitoring of Pollution (TEMPO)

    Science.gov (United States)

    Zoogman, P.; Liu, X.; Suleiman, R. M.; Pennington, W. F.; Flittner, D. E.; Al-Saadi, J. A.; Hilton, B. B.; Nicks, D. K.; Newchurch, M. J.; Carr, J. L.; hide

    2016-01-01

    TEMPO (Tropospheric Emissions: Monitoring of Pollution) was selected in 2012 by NASA as the first Earth Venture Instrument, for launch between 2018 and 2021. It will measure atmospheric pollution for greater North America from space using ultraviolet and visible spectroscopy. TEMPO observes from Mexico City, Cuba, and the Bahamas to the Canadian oil sands, and from the Atlantic to the Pacific, hourly and at high spatial resolution (approximately 2.1 kilometers N/S by 4.4 kilometers E/W at 36.5 degrees N, 100 degrees W). TEMPO provides a tropospheric measurement suite that includes the key elements of tropospheric air pollution chemistry, as well as contributing to carbon cycle knowledge. Measurements are made hourly from geostationary (GEO) orbit, to capture the high variability present in the diurnal cycle of emissions and chemistry that are unobservable from current low-Earth orbit (LEO) satellites that measure once per day. The small product spatial footprint resolves pollution sources at sub-urban scale. Together, this temporal and spatial resolution improves emission inventories, monitors population exposure, and enables effective emission-control strategies. TEMPO takes advantage of a commercial GEO host spacecraft to provide a modest cost mission that measures the spectra required to retrieve ozone (O3), nitrogen dioxide (NO2), sulfur dioxide (SO2), formaldehyde (H2CO), glyoxal (C2H2O2), bromine monoxide (BrO), IO (iodine monoxide),water vapor, aerosols, cloud parameters, ultraviolet radiation, and foliage properties. TEMPO thus measures the major elements, directly or by proxy, in the tropospheric O3 chemistry cycle. Multi-spectral observations provide sensitivity to O3 in the lowermost troposphere, substantially reducing uncertainty in air quality predictions. TEMPO quantifies and tracks the evolution of aerosol loading. It provides these near-real-time air quality products that will be made publicly available. TEMPO will launch at a prime time to be the

  7. Tempos Líquidos Liquid Times

    Directory of Open Access Journals (Sweden)

    Márcio Pereira Basílio

    2010-04-01

    Full Text Available Esta resenha tem por objetivo fazer emergir as principais ideias de Zygmunt Bauman em Tempos líquidos. Neste sentido, o assunto primordial que permeia a obra é a insegurança. Um fenômeno resultante da "vontade de liberdade", uma marca, segundo o autor, da pós-modernidade, princípio que se opõe diretamente à projeção em torno de uma vida social estável, na ordem moderna. Em um mundo globalizado, a sociedade não é mais protegida pelo Estado, ou pelo menos é pouco provável que confie na proteção oferecida por este. Ela agora está exposta à rapacidade de forças que não controla e não espera, nem pretende, recapturar e dominar. Assim sendo, a obra em análise contribui para o entendimento e compreensão dos fenômenos sociais que nos cercam, e indica como interagir de modo adequado e com efeitos previsíveis.This review intends to identify the main ideas of Zygmunt Bauman's Liquid Times. In this sense, the key issue that permeates the work is uncertainty. A phenomenon that results from the "desire for freedom" - which is a sign of the postmodernity, in the words of the author - that principle is directly opposed to that which is based on a stable social life, in the modern world. In a globalized world, society is no longer protected by the State, or at least it is unlikely to trust the protection on offer; it is now exposed to the rapacity of forces it does not control and no longer hopes or intends to recapture and subdue. Thus, the book under review contributes both to the understanding and comprehension of the social phenomena that surrounds us, and to an appropriate interaction, with predictable effects.

  8. Individual musical tempo preference correlates with EEG beta rhythm.

    Science.gov (United States)

    Bauer, Anna-Katharina R; Kreutz, Gunter; Herrmann, Christoph S

    2015-04-01

    Every individual has a preferred musical tempo, which peaks slightly above 120 beats per minute and is subject to interindividual variation. The preferred tempo is believed to be associated with rhythmic body movements as well as motor cortex activity. However, a long-standing question is whether preferred tempo is determined biologically. To uncover the neural correlates of preferred tempo, we first determined an individual's preferred tempo using a multistep procedure. Subsequently, we correlated the preferred tempo with a general EEG timing parameter as well as perceptual and motor EEG correlates-namely, individual alpha frequency, auditory evoked gamma band response, and motor beta activity. Results showed a significant relation between preferred tempo and the frequency of motor beta activity. These findings suggest that individual tempo preferences result from neural activity in the motor cortex, explaining the interindividual variation. Copyright © 2014 Society for Psychophysiological Research.

  9. Fluorescence quenching of 7-amino-4-methylcoumarin by different TEMPO derivatives.

    Science.gov (United States)

    Żamojć, Krzysztof; Wiczk, Wiesław; Zaborowski, Bartłomiej; Jacewicz, Dagmara; Chmurzyński, Lech

    2015-02-05

    The fluorescence quenching of 7-amino-4-methylcoumarin by different TEMPO derivatives was studied in aqueous solutions with the use of steady-state, time-resolved fluorescence spectroscopy as well as UV-VIS absorption spectroscopy methods. In order to distinguish each TEMPO derivative from the others and to understand the mechanism of quenching, the absorption and fluorescence emission spectra as well as decays of the fluorescence of 7-amino-4-methylcoumarin were registered as a function of each TEMPO derivative concentration. There were no deviations from a linearity in the Stern-Volmer plots (determined from both, steady-state and time-resolved measurements). The fluorescence quenching mechanism was found to be entirely collisional, what was additionally confirmed by the registration of Stern-Volmer plots at 5 temperatures ranging from 15 to 55°C. Based on theoretical calculations of molecular radii and ionization potentials of all TEMPO derivatives the mechanism of electron transfer was rejected. The fluorescence quenching which was being studied seems to be diffusion-limited and caused by the increase of non-radiative processes, such as an internal conversion and an intersystem crossing. The Stern-Volmer quenching constants and bimolecular quenching constants were determined at the room temperature for all TEMPO derivatives studied. Among all TEMPO derivatives studied TEMPO-4-amino-4-carboxylic acid (TOAC) was found to be the most effective quencher of 7-amino-4-methylcoumarin fluorescence (kq for TOAC was approximately 1.5 higher than kq for other TEMPO compounds studied). The findings demonstrate the possibility of developing an analytical method for the quantitative determination of TOAC, which incorporation into membrane proteins may provide a direct detection of peptide backbone dynamics. Copyright © 2014 Elsevier B.V. All rights reserved.

  10. Characterization of TEMPO-oxidized bacterial cellulose; Caracterizacao de celulose bacteriana tempo-oxidada

    Energy Technology Data Exchange (ETDEWEB)

    Nascimento, Eligenes S.; Pereira, Andre L.S.; Lima, Helder L.; Barroso, Maria K. de A., E-mail: eligenessampaio@hotmail.com [Universidade Federal Ceara (UFC), Fortaleza, CE (Brazil); Barros, Matheus de O. [Instituto Federal do Ceara (IFCE), Fortaleza, CE (Brazil); Morais, Joao P.S. [Embrapa Algodao, Campina Grande, PB (Brazil); Borges, Maria de F.; Rosa, Morsyleide de F. [Embrapa Agroindustria Tropical, Fortaleza, CE (Brazil)

    2015-07-01

    The aim of this study was to characterize the TEMPO-oxidized bacterial cellulose, as a preliminary research for further application in nanocomposites. Bacterial cellulose (BC) was selectively oxidized at C-6 carbon by TEMPO radical. Oxidized bacterial cellulose (BCOX) was characterized by TGA, FTIR, XRD, and zeta potential. BCOX suspension was stable at pH 7.0, presented a crystallinity index of 83%, in spite of 92% of BC, because of decrease in the free hydroxyl number. FTIR spectra showed characteristic BC bands and, in addition, band of carboxylic group, proving the oxidation. BCOX DTG showed, in addition to characteristic BC thermal events, a maximum degradation peak at 233 °C, related to sodium anhydro-glucuronate groups formed during the cellulose oxidation. Thus, BC can be TEMPO-oxidized without great loss in its structure and properties. (author)

  11. Effects of music tempo upon submaximal cycling performance.

    Science.gov (United States)

    Waterhouse, J; Hudson, P; Edwards, B

    2010-08-01

    In an in vivo laboratory controlled study, 12 healthy male students cycled at self-chosen work-rates while listening to a program of six popular music tracks of different tempi. The program lasted about 25 min and was performed on three occasions--unknown to the participants, its tempo was normal, increased by 10% or decreased by 10%. Work done, distance covered and cadence were measured at the end of each track, as were heart rate and subjective measures of exertion, thermal comfort and how much the music was liked. Speeding up the music program increased distance covered/unit time, power and pedal cadence by 2.1%, 3.5% and 0.7%, respectively; slowing the program produced falls of 3.8%, 9.8% and 5.9%. Average heart rate changes were +0.1% (faster program) and -2.2% (slower program). Perceived exertion and how much the music was liked increased (faster program) by 2.4% and 1.3%, respectively, and decreased (slower program) by 3.6% and 35.4%. That is, healthy individuals performing submaximal exercise not only worked harder with faster music but also chose to do so and enjoyed the music more when it was played at a faster tempo. Implications of these findings for improving training regimens are discussed.

  12. Poesia em tempos de indigência

    OpenAIRE

    Pedro Süssekind

    2007-01-01

    O artigo a seguir discute as conexões entre o filme Quei loro incontri, de Jean-Marie Straub, o romance Diálogos com Leucó, de Cesare Pavese, e as reflexões de Friedrich Hölderlin acerca da Grécia Clássica, dos deuses e do mundo moderno. A célebre pergunta "Para que poetas em tempos de indigência?", do poema "Pão e vinho" de Hölderlin, serve como referência para essa discussão.

  13. Evaluating A Priori Ozone Profile Information Used in TEMPO Tropospheric Ozone Retrievals

    Science.gov (United States)

    Johnson, M. S.; Sullivan, J. T.; Liu, X.; Newchurch, M.; Kuang, S.; McGee, T. J.; Langford, A. O.; Senff, C. J.; Leblanc, T.; Berkoff, T.; Gronoff, G.; Chen, G.; Strawbridge, K. B.

    2016-12-01

    Ozone (O3) is a greenhouse gas and toxic pollutant which plays a major role in air quality. Typically, monitoring of surface air quality and O3 mixing ratios is primarily conducted using in situ measurement networks. This is partially due to high-quality information related to air quality being limited from space-borne platforms due to coarse spatial resolution, limited temporal frequency, and minimal sensitivity to lower tropospheric and surface-level O3. The Tropospheric Emissions: Monitoring of Pollution (TEMPO) satellite is designed to address these limitations of current space-based platforms and to improve our ability to monitor North American air quality. TEMPO will provide hourly data of total column and vertical profiles of O3 with high spatial resolution to be used as a near-real-time air quality product. TEMPO O3 retrievals will apply the Smithsonian Astrophysical Observatory profile algorithm developed based on work from GOME, GOME-2, and OMI. This algorithm uses a priori O3 profile information from a climatological data-base developed from long-term ozone-sonde measurements (tropopause-based (TB) O3 climatology). It has been shown that satellite O3 retrievals are sensitive to a priori O3 profiles and covariance matrices. During this work we investigate the climatological data to be used in TEMPO algorithms (TB O3) and simulated data from the NASA GMAO Goddard Earth Observing System (GEOS-5) Forward Processing (FP) near-real-time (NRT) model products. These two data products will be evaluated with ground-based lidar data from the Tropospheric Ozone Lidar Network (TOLNet) at various locations of the US. This study evaluates the TB climatology, GEOS-5 climatology, and 3-hourly GEOS-5 data compared to lower tropospheric observations to demonstrate the accuracy of a priori information to potentially be used in TEMPO O3 algorithms. Here we present our initial analysis and the theoretical impact on TEMPO retrievals in the lower troposphere.

  14. Tempo e patrimônio Temporality and patrimony

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    François Hartog

    2006-12-01

    Full Text Available O artigo discute a redefinição da "memória" e do "patrimônio" dentro do novo "regime de historicidade" que o Ocidente vive após a Queda do Muro de Berlim (1989. Estas palavras-chave são tratadas como indícios, sintomas, de nossa relação com o tempo, como testemunhas da "crise" da ordem presente do tempo. O problema abordado: um novo regime de historicidade, centrado sobre o presente, estaria se formulando? Para o autor, ocorreu um crescimento rápido da categoria do presente e se impôs a evidência de um presente onipresente, que ele nomeia "presentismo", onde se vive entre a amnésia e a vontade de nada esquecer.This article discusses the redefinition of "memory" and "patrimony" within the new "regime of historicity" set in motion in the West after the fall of the Berlin Wall (1989. These keywords are treated as indicators or symptoms of our relation with time, as witnesses of the "crises" of the present order of time. The question that is approached is the following: is a new regime of historicity, one based on the present, taking shape? In the author's view, the category of present has grown rather fast and imposed an omnipotent present, which he names "presentism". This condition causes one to be torn between amnesia and the desire not to forget.

  15. Manipulating Greek musical modes and tempo affects perceived musical emotion in musicians and nonmusicians

    Directory of Open Access Journals (Sweden)

    D. Ramos

    2011-02-01

    Full Text Available The combined influence of tempo and mode on emotional responses to music was studied by crossing 7 changes in mode with 3 changes in tempo. Twenty-four musicians aged 19 to 25 years (12 males and 12 females and 24 nonmusicians aged 17 to 25 years (12 males and 12 females were required to perform two tasks: 1 listening to different musical excerpts, and 2 associating an emotion to them such as happiness, serenity, fear, anger, or sadness. ANOVA showed that increasing the tempo strongly affected the arousal (F(2,116 = 268.62, mean square error (MSE = 0.6676, P < 0.001 and, to a lesser extent, the valence of emotional responses (F(6,348 = 8.71, MSE = 0.6196, P < 0.001. Changes in modes modulated the affective valence of the perceived emotions (F(6,348 = 4.24, MSE = 0.6764, P < 0.001. Some interactive effects were found between tempo and mode (F (1,58 = 115.6, MSE = 0.6428, P < 0.001, but, in most cases, the two parameters had additive effects. This finding demonstrates that small changes in the pitch structures of modes modulate the emotions associated with the pieces, confirming the cognitive foundation of emotional responses to music.

  16. Espaço, tempo e lugar

    Directory of Open Access Journals (Sweden)

    Carmem Maluf

    2008-06-01

    Full Text Available O presente artigo explora e discute as características mediadoras dos referenciais: espaço, tempo e lugar, assim como suas influências nos processos de construção social. Aborda a decorrência da relação homem/espaço/tecnologia na conformação da identidade dos espaços de domínio e na caracterização deles, ao mesmo tempo, como herança e patrimônio culturais de seus usuários. Explora também, de forma sucinta, a interferência do modelo capitalista vigente e sua predominância, por intermédio das classes hegemônicas, na definição das estratégias de intervenção, qualificação e apropriação dos espaços. Finalmente, aponta para a possibilidade/necessidade de buscar-se fórmulas não-excludentes para a conformação/requalificação de espaços de plena fruição como instrumentos de redução das diferenças e de reconciliação social.

  17. Redox Properties of Polyvinylamine-g-TEMPO in Multilayer Films with Sodium Poly(styrenesulfonate).

    Science.gov (United States)

    Fu, Qiang; Zoudanov, Igor; Gustafsson, Emil; Yang, Dong; Soleymani, Leyla; Pelton, Robert H

    2017-02-15

    Layer-by-layer (LbL) assemblies of polyvinylamine with grafted TEMPO moieties (PVAm-T) with sodium polystyrenesulfonate (PSS) were prepared on gold-sulfonate surfaces, and the redox properties were measured by cyclic voltammetry. LbL compositions were probed by quartz crystal microbalance (wet) and ellipsometric (dry) film measurements. Approximately 30% of the TEMPO moieties in the LbL assemblies were redox-active when the total TEMPO coverage was varied up to 6 μmol/m2, by either varying the TEMPO content in PVAm-T or by varying the number of LbL bilayers. Three non-redox-active PVAm/PSS blocking bilayers were required to prevent the electrode from oxidizing PVAm-T in the exterior LbL layer. This suggests significant intermixing between the layers in the LbL film. In addition to contributing to the small but growing body of work on redox polymers based on grafted TEMPO, this work serves as a reference point for understanding the redox properties of colloidal PVAm-T-laccase complexes in future work.

  18. Escolas de tempo integral e atividades extracurriculares: universos à espera da Psicologia brasileira

    Directory of Open Access Journals (Sweden)

    Neyfsom Carlos Fernandes Matias

    2009-12-01

    Full Text Available Observa-se que, no Brasil, diversas ações vêm sendo desenvolvidas com o intuito de se implantar uma educação em tempo integral. Sabe-se que as atividades ligadas ao esporte, às artes e culturais podem contribuir significativamente nesse sentido. Com base nisso, este artigo apresenta algumas iniciativas que visavam à execução de escolas de tempo integral e como as atividades extracurriculares podem ser úteis na efetivação de uma educação em tempo integral. O objetivo deste estudo foi o de verificar o que já se tem publicado sobre as escolas de tempo integral e atividades extracurriculares, desde uma pesquisa bibliográfica, nos periódicos “Psicologia: teoria e pesquisa”; “Psicologia: reflexão e crítica”; “Psicologia escolar e educacional”. As considerações finais apontam que o estudo sobre as atividades extracurriculares e escolas de tempo integral ainda é embrionário no Brasil e que urge a realização de pesquisas empíricas sobre atividades extracurriculares no País

  19. Comparação dos tempos de geração e digitação de laudos radiológicos entre um sistema eletrônico baseado em voz sobre IP (VoIP e um sistema tradicional baseado em papel Comparison between the time required to generate and type radiology reports by means of VoIP-based system and a traditional paper-based system

    Directory of Open Access Journals (Sweden)

    Dácio Miranda Ferreira

    2010-02-01

    Full Text Available OBJETIVO: Comparar os tempos de geração e digitação de laudos radiológicos entre um sistema eletrônico baseado na tecnologia de voz sobre o protocolo de internet (VoIP e o sistema tradicional, em que o radiologista escreve o laudo à mão. MATERIAIS E MÉTODOS: Foi necessário modelar, construir e implantar o sistema eletrônico proposto, capaz de gravar o laudo em formato de áudio digital, e compará-lo com o tradicional já existente. Por meio de formulários, radiologistas e digitadores anotaram os tempos de geração e digitação dos laudos nos dois sistemas. RESULTADOS: Comparadas as médias dos tempos entre os sistemas, o eletrônico apresentou redução de 20% (p = 0,0410 do tempo médio de geração do laudo em comparação com o sistema tradicional. O tradicional foi mais eficiente em relação ao tempo de digitação, uma vez que a média de tempo do eletrônico foi três vezes maior (p OBJECTIVE: To compare the time required for generation and typing of radiology reports by means of an electronic system based on the technology of voice over internet protocol (VoIP and the traditional system, in which the report is handwritten by the radiologist. MATERIALS AND METHODS: It was necessary to model, build and deploy the proposed electronic system, capable of recording the reports in a digital audio format and comparing it with the traditional method. Radiologists and transcriptionists recorded the reports generation and typing times for both systems, using appropriate forms. RESULTS: When the mean times between both systems were compared, those from the electronic system presented a reduction of 20% (p = 0.0410 in the report generation time as compared with the traditional method. On the other hand, the traditional method was more efficient with respect to typing time, as the mean typing time with the electronic system was three times longer (p < 0.0001. CONCLUSION: The results demonstrated a statistically significant difference

  20. Problem Based Learning, curriculum development and change ...

    African Journals Online (AJOL)

    Introduction: The faculty of Medicine, (FOM) Makerere University Kampala was started in 1924 and has been running a traditional curriculum for 79 years. A few years back it embarked on changing its curriculum from traditional to Problem Based Learning (PBL) and Community Based Education and Service (COBES) as ...

  1. The effect of music tempo on perceived crowding in retailing

    OpenAIRE

    Fiksdal, Taisiya; Hua, Wen

    2016-01-01

    In the marketing field the influence of in-store atmospherics on consumers’ shopping behavior is widely accepted. We seek to understand the effects of instore music tempo on perceived crowding and how music tempo can affect emotions, arousal and perceived control occurring in retail stores. Hence, our research questions are the following: Does music tempo influence the perceived crowding? Do arousal, perceived control, positive and negative emotions, mediate the relationship...

  2. The effect of music tempo on perceived crowding in retailing

    OpenAIRE

    Fiksdal, Taisiya; Hua, Wen

    2016-01-01

    Masteroppgave(MSc) in Master of Science in Strategic Marketing Management - Handelshøyskolen BI, 2016 In the marketing field the influence of in-store atmospherics on consumers’ shopping behavior is widely accepted. We seek to understand the effects of instore music tempo on perceived crowding and how music tempo can affect emotions, arousal and perceived control occurring in retail stores. Hence, our research questions are the following: Does music tempo influence the perce...

  3. [Vegetation change in Shenzhen City based on NDVI change classification].

    Science.gov (United States)

    Li, Yi-Jing; Zeng, Hui; Wel, Jian-Bing

    2008-05-01

    Based on the TM images of 1988 and 2003 as well as the land-use change survey data in 2004, the vegetation change in Shenzhen City was assessed by a NDVI (normalized difference vegetation index) change classification method, and the impacts from natural and social constraining factors were analyzed. The results showed that as a whole, the rapid urbanization in 1988-2003 had less impact on the vegetation cover in the City, but in its plain areas with low altitude, the vegetation cover degraded more obviously. The main causes of the localized ecological degradation were the invasion of built-ups to woods and orchards, land transformation from woods to orchards at the altitude of above 100 m, and low percentage of green land in some built-ups areas. In the future, the protection and construction of vegetation in Shenzhen should focus on strengthening the protection and restoration of remnant woods, trying to avoid the built-ups' expansion to woods and orchards where are better vegetation-covered, rectifying the unreasonable orchard constructions at the altitude of above 100 m, and consolidating the greenbelt construction inside the built-ups. It was considered that the NDVI change classification method could work well in efficiently uncovering the trend of macroscale vegetation change, and avoiding the effect of random noise in data.

  4. The tempo and mode of barnacle evolution

    DEFF Research Database (Denmark)

    Pérez-Losada, Marcos; Harp, Margaret; Høeg, Jens T

    2008-01-01

    (outgroup) species representing almost all the Thoracica families to assess the tempo and mode of barnacle evolution. Using phylogenetic methods of maximum parsimony, maximum likelihood, and Bayesian inference and 14 fossil calibrations, we found that: (1) Iblomorpha form a monophyletic group; (2......) pedunculated barnacles without shell plates (Heteralepadomorpha) are not ancestral, but have evolved, at least twice, from plated forms; (3) the ontogenetic pattern with 5-->6-->8-->12+ plates does not reflect Thoracica shell evolution; (4) the traditional asymmetric barnacles (Verrucidae) and the Balanomorpha......) the Thoracica suborders evolved since the Early Carboniferous (340mya) with the final radiation of the Sessilia in the Upper Jurassic (147mya). These results, therefore, reject many of the underlying hypotheses about character evolution in the Cirripedia Thoracica, stimulate a variety of new thoughts...

  5. KEKERASAN TERHADAP ANAK DALAM KONSTRUKSI KORAN TEMPO

    Directory of Open Access Journals (Sweden)

    Wiwid Noor Rakhmad

    2016-03-01

    Full Text Available The mass media are often accused of discriminatory. Too often considered as one of the factors that influence the rise of violence against children. The truth of the social reality or displayed by the media in reporting crimes against children tend to be partial, because the media actually has a reciprocal relationship with reality itself. On one side of the media is regarded as a mirror of reality and how its operation showing the reality, but the media also do his own interpretation and creates its own reality anyway.Through analysis techniques framing Zhongdang Pan and Gerald M. Kosicki, the study was about to answer the research questions; How does Koran Tempo framing incidence of violence against children and to communicate to the reader in the form of news.

  6. Gramsci no seu e no nosso tempo

    Directory of Open Access Journals (Sweden)

    Cássio Augusto Samogin Almeida Guilherme

    2011-04-01

    Full Text Available Resenha: AGGIO, Alberto; HENRIQUES, Luiz Sérgio; VACCA, Giuseppe (org.. Gramsci no seu tempo. Brasília: Fundação Astrogildo Pereira; co-edição – Rio de Janeiro: Contraponto, 2010

  7. Educational Change towards Problem Based Learning

    DEFF Research Database (Denmark)

    Li, Huichun

    As a promising educational approach, PBL (Problem Based Learning) has been adopted by an increasing number of higher education institutions worldwide to replace the traditional lectured based educational approach. However, the organizational change towards PBL is not easy for higher education...... universities which are transforming their traditional educational approaches to PBL. Specifically, this book is concerned with how managers, staff members, and students interpret PBL and its implementation. It reveals that the challenges for implementing PBL are closely linked to organizational members...

  8. Sympathetic Tone Induced by High Acoustic Tempo Requires Fast Respiration.

    Directory of Open Access Journals (Sweden)

    Ken Watanabe

    Full Text Available Many studies have revealed the influences of music, and particularly its tempo, on the autonomic nervous system (ANS and respiration patterns. Since there is the interaction between the ANS and the respiratory system, namely sympatho-respiratory coupling, it is possible that the effect of musical tempo on the ANS is modulated by the respiratory system. Therefore, we investigated the effects of the relationship between musical tempo and respiratory rate on the ANS. Fifty-two healthy people aged 18-35 years participated in this study. Their respiratory rates were controlled by using a silent electronic metronome and they listened to simple drum sounds with a constant tempo. We varied the respiratory rate-acoustic tempo combination. The respiratory rate was controlled at 15 or 20 cycles per minute (CPM and the acoustic tempo was 60 or 80 beats per minute (BPM or the environment was silent. Electrocardiograms and an elastic chest band were used to measure the heart rate and respiratory rate, respectively. The mean heart rate and heart rate variability (HRV were regarded as indices of ANS activity. We observed a significant increase in the mean heart rate and the low (0.04-0.15 Hz to high (0.15-0.40 Hz frequency ratio of HRV, only when the respiratory rate was controlled at 20 CPM and the acoustic tempo was 80 BPM. We suggest that the effect of acoustic tempo on the sympathetic tone is modulated by the respiratory system.

  9. Is expressive timing relational invariant under tempo transformation?

    NARCIS (Netherlands)

    Honing, H.

    2007-01-01

    This empirical study is concerned with examining the relation between tempo and expressive timing in music performance. This was investigated by asking listeners (N = 307) to distinguish between an original recording and a tempo-transformed version in a musical genre of their preference (jazz or

  10. Tempo and mode in plant breeding system evolution.

    Science.gov (United States)

    Goldberg, Emma E; Igić, Boris

    2012-12-01

    Classic questions about trait evolution-including the directionality of character change and its interactions with lineage diversification-intersect in the study of plant breeding systems. Transitions from self-incompatibility to self-compatibility are frequent, and they may proceed within a species ("anagenetic" mode of breeding system change) or in conjunction with speciation events ("cladogenetic" mode of change). We apply a recently developed phylogenetic model to the nightshade family Solanaceae, quantifying the relative contributions of these two modes of evolution along with the tempo of breeding system change, speciation, and extinction. We find that self-incompatibility, a genetic mechanism that prevents self-fertilization, is lost largely by the cladogenetic mode. Self-compatible species are thus more likely to arise from the isolation of a newly self-compatible population than from species-wide fixation of self-compatible mutants. Shared polymorphism at the locus that governs self-incompatibility shows it to be ancestral and not regained within this family. We demonstrate that failing to account for cladogenetic character change misleads phylogenetic tests of evolutionary irreversibility, both for breeding system in Solanaceae and on simulated trees. © 2012 The Author(s). Evolution© 2012 The Society for the Study of Evolution.

  11. Evidence-Based Interactive Management of Change

    Directory of Open Access Journals (Sweden)

    Albert Fleischmann

    2011-06-01

    Full Text Available Evidence-based interactive management of change means hands-on experience of modified work processes, given evidence of change. For this kind of pro-active organizational development support we use an organisational process memory and a communication-based representation technique for role-specific and task-oriented process execution. Both are effective means for organizations becoming agile through interactively modelling the business at the process level and re-constructing or re-arranging process representations according to various needs. The tool allows experiencing role-specific workflows, as the communication-based refinement of work models allows for executable process specifications. When presenting the interactive processes to individuals involved in the business processes, changes can be explored interactively in a context-sensitive way before re-implementing business processes and information systems. The tool is based on a service-oriented architecture and a flexible representation scheme comprising the exchange of message between actors, business objects and actors (roles. The interactive execution of workflows does not only enable the individual reorganization of work but also changes at the level of the entire organization due to the represented interactions.

  12. Néron Models and Base Change

    DEFF Research Database (Denmark)

    Halle, Lars Halvard; Nicaise, Johannes

    on Néron component groups, Edixhoven’s filtration and the base change conductor of Chai and Yu, and we study these invariants using various techniques such as models of curves, sheaves on Grothendieck sites and non-archimedean uniformization. We then apply our results to the study of motivic zeta functions...

  13. Spontaneous Entrainment of Running Cadence to Music Tempo.

    Science.gov (United States)

    Van Dyck, Edith; Moens, Bart; Buhmann, Jeska; Demey, Michiel; Coorevits, Esther; Dalla Bella, Simone; Leman, Marc

    Since accumulating evidence suggests that step rate is strongly associated with running-related injuries, it is important for runners to exercise at an appropriate running cadence. As music tempo has been shown to be capable of impacting exercise performance of repetitive endurance activities, it might also serve as a means to (re)shape running cadence. The aim of this study was to validate the impact of music tempo on running cadence. Sixteen recreational runners ran four laps of 200 m (i.e. 800 m in total); this task was repeated 11 times with a short break in between each four-lap sequence. During the first lap of a sequence, participants ran at a self-paced tempo without musical accompaniment. Running cadence of the first lap was registered, and during the second lap, music with a tempo matching the assessed cadence was played. In the final two laps, the music tempo was either increased/decreased by 3.00, 2.50, 2.00, 1.50, or 1.00 % or was kept stable. This range was chosen since the aim of this study was to test spontaneous entrainment (an average person can distinguish tempo variations of about 4 %). Each participant performed all conditions. Imperceptible shifts in musical tempi in proportion to the runner's self-paced running tempo significantly influenced running cadence ( p  music tempo on running cadence can only be obtained up to a certain level of tempo modification. Finally, significantly higher levels of tempo entrainment were found for female participants compared to their male counterparts ( p  music tempo could serve as an unprompted means to impact running cadence. As increases in step rate may prove beneficial in the prevention and treatment of common running-related injuries, this finding could be especially relevant for treatment purposes, such as exercise prescription and gait retraining. Music tempo can spontaneously impact running cadence.A basin for unsolicited entrainment of running cadence to music tempo was discovered.The effect

  14. Pengembangan alat tempo trainer untuk membantu efisiensi gerakan lengan gaya bebas cabang olahraga renang

    Directory of Open Access Journals (Sweden)

    Bahtiyar Heru Susanto

    2017-09-01

    This research aimed to develop the tools of Tempo Trainer to help efficiency of arm freestyle movement on the branch of swimming. Small-scale trials were conducted on four coaches and 10 athletes in the swimming association Tirta Alvita and Yuso. Large-scale trial was conducted on 10 coaches and 25 athletes in the swimming association Tirta Alvita, Yuso, Dolphin, Caesar, and Arowana. The instrument used to collect data was a questionnaire based on the analysis PIECES (Performance, Information, Economic, Control, Efficiency, Services. The assessment result of experts, coaches, and athletes toward Tempo Trainer tool shows that the assessment categoryis good, valid and reliable. Based of the resultsthat Tempo Trainer tool developed can count the number of cycles of freestyle movement, a sound that can be heard by coaches and athletes, can be used for more than one athlete, as well as it is more affordable. The coaches assessment shows valid results with every indicator PIECES obtain value rxy > r table = 0.632, with reliable results rxy = 0.908. The assessment of Tempo Trainer draft tool by athletes is good and valid with the result of the rxy > r table = 0.750.

  15. Revealing spatio-spectral electroencephalographic dynamics of musical mode and tempo perception by independent component analysis.

    Science.gov (United States)

    Lin, Yuan-Pin; Duann, Jeng-Ren; Feng, Wenfeng; Chen, Jyh-Horng; Jung, Tzyy-Ping

    2014-02-28

    Music conveys emotion by manipulating musical structures, particularly musical mode- and tempo-impact. The neural correlates of musical mode and tempo perception revealed by electroencephalography (EEG) have not been adequately addressed in the literature. This study used independent component analysis (ICA) to systematically assess spatio-spectral EEG dynamics associated with the changes of musical mode and tempo. Empirical results showed that music with major mode augmented delta-band activity over the right sensorimotor cortex, suppressed theta activity over the superior parietal cortex, and moderately suppressed beta activity over the medial frontal cortex, compared to minor-mode music, whereas fast-tempo music engaged significant alpha suppression over the right sensorimotor cortex. The resultant EEG brain sources were comparable with previous studies obtained by other neuroimaging modalities, such as functional magnetic resonance imaging (fMRI) and positron emission tomography (PET). In conjunction with advanced dry and mobile EEG technology, the EEG results might facilitate the translation from laboratory-oriented research to real-life applications for music therapy, training and entertainment in naturalistic environments.

  16. Instructional changes based on cogenerative physics reform

    Science.gov (United States)

    Samuels, Natan; Brewe, Eric; Kramer, Laird

    2013-01-01

    We describe changes in a physics teacher's pedagogy and cultural awareness that resulted from her students' involvement in reforming their classroom. For this case study, we examined a veteran high school teacher's semester-long use of CMPLE (the Cogenerative Mediation Process for Learning Environments) in her Modeling Instruction classroom. CMPLE is a formative intervention designed to help students and instructors collaborate to change classroom dynamics, based on how closely the environment matches their learning preferences. Analysis of classroom videos, interviews, and other artifacts indicates that adapting the environment to align with the preferences of that shared culture affected the instructor in complex ways. We will trace her teaching practices and her self-described awareness of the culture of learning, to highlight notable changes. The teacher espoused deeper understanding of her students' physics learning experience, which she gained from including students in responding to their own individual and collective learning preferences.

  17. On the tempo and quantum of first marriages in Austria, Germany, and Switzerland

    Directory of Open Access Journals (Sweden)

    2004-05-01

    Full Text Available Period marriage rates have been falling dramatically in most industrial societies since the beginning of the 1970s. As has been shown in the literature, part of this decline is due to the postponement of marriage to later ages. However, the change in variance has been ignored so far. In the case of Austria, Germany, and Switzerland, this paper explores how much of the change in female first marriage rates can be attributed to tempo effects caused by changes in the mean age and variance, and how much of it is due to quantum effects, i.e., the proportion of women who ever marry from 1970 to 2000. In all three countries we find a significant share of the decline in first marriage rates due to tempo distortions, though on different levels.

  18. Doença e Tempo

    Directory of Open Access Journals (Sweden)

    Fernando S. P. Telles

    Full Text Available Trata-se de um ensaio que procura estabelecer a propriedade da questão: "Faz sentido conceber a doença como um fenômeno que transcende as categorias da representação?" Destaca-se uma correspondência entre os fenômenos da representação e da espacialização. Representar passa a ser a atividade de definir uma trajetória que admite uma cronologia temporal de referência, onde um certo fenômeno é apresentado. O paradigma que define a "Anátomo-Clínica" e a Epidemiologia é considerado por nós como uma forma de representação ou espacialização da doença. Conclui-se ser possível o acesso a algo que se denomina "adoecer", que transcende a representação "Anátomo-Clínica" e epidemiológica, desde que, para tal, se admita a possibilidade de o conhecimento poder ser, também, construído fora do espaço, isto é, no tempo não-cronológico.

  19. Unidade e multiplicidade do tempo: uma abordagem transdisciplinar

    Directory of Open Access Journals (Sweden)

    Alfredo Pereira Júnior

    2004-08-01

    Full Text Available Procurou-se, neste trabalho, pensar o tempo no contexto das ciências da saúde, no qual se entrelaçam aspectos físicos, biológicos, psicológicos e sociológicos. Enquanto em nossa percepção do mundo e de nós mesmos o tempo se apresenta sob muitas facetas, na física clássica, conforme o modelo newtoniano, assumia-se a existência de um tempo absoluto, unilinear, homogêneo e independente do observador. Com a teoria da relatividade e o estudo dos sistemas complexos, um novo conceito de tempo apresenta-se na física: o tempo fractal, o qual possibilita maior compatibilidade com as abordagens psicológicas e sociológicas. Nesta perspectiva, a experiência de vida de uma pessoa, e seus respectivos processos de construção da saúde, envolveria uma multiplicidade de tempos, que coexistem e se organizam segundo um padrão coerente de auto-similaridade. Uma quebra desse padrão estaria correlacionada com a ocorrência da doença. Sugere-se que uma abordagem mais adequada do adoecimento deveria levar em conta, como referência para o profissional de saúde, o conceito de tempo fractal, possibilitando maior sintonia do paciente com a complexidade da natureza e, por conseguinte, consigo mesmo.

  20. TEMPO Specific Photochemical Reflectance Index for Monitoring Crop Productivity

    Science.gov (United States)

    Wulamu, A.; Fishman, J.; Maimaitiyiming, M.

    2016-12-01

    Chlorophyll fluorescence and Photochemical Reflectance Index (PRI) are two key indicators of plant functional status used for early stress detection. With its less than one nanometer hyperspectral resolution and hourly revisit capabilities, NASA's Tropospheric Emissions: Monitoring of Pollution (TEMPO) sensor provides new opportunities for monitoring regional food security. Chlorophyll fluorescence can be retrieved by TEMPO using Oxygen B (O2-B) absorption region at 687 nm. The Photochemical Reflectance Index (PRI) is calculated from spectral reflectance at 531 and 570. However, TEMPO spectral range covers from 290 mm - 490 nm and 540 nm -740 nm, does not provide the 531 nm measurement band for PRI. It is imperative to develop alternate wavelengths within the TEMPO spectral range for these early stress indicators so that regional crop health can be observed by TEMPO with unparalleled spectral and temporal resolutions to address food security. Combining field and airborne remote sensing experiments and radiative transfer simulations, this work proposes a TEMPO specific PRI and demonstrates that TEMPO offers a new set of high-resolution spectral data for crop monitoring.

  1. A comparative study on change vector analysis based change ...

    Indian Academy of Sciences (India)

    From this viewpoint, different change detection algorithms have been developed for land-use land-cover (LULC) region. Among the different change detection algorithms, change vector analysis (CVA) has level headed capability of extracting maximuminformation in terms of overall magnitude of change and the direction of ...

  2. Implementation of Tropospheric Emissions: Monitoring of Pollution (TEMPO)

    Science.gov (United States)

    Chance, K.; Liu, X.; Suleiman, R. M.; Flittner, D. E.; Al-Saadi, J. A.; Janz, S. J.

    2014-12-01

    The updated status of TEMPO, as it proceeds from formulation phase into implementation phase is presented. TEMPO, the first NASA Earth Venture Instrument, will measure atmospheric pollution for greater North America from space using ultraviolet and visible spectroscopy. TEMPO measures from Mexico City to the Canadian oil sands, and from the Atlantic to the Pacific, hourly and at high spatial resolution. TEMPO provides a tropospheric measurement suite that includes the key elements of tropospheric air pollution chemistry. Measurements are from geostationary (GEO) orbit, to capture the inherent high variability in the diurnal cycle of emissions and chemistry. The small product spatial footprint resolves pollution sources at sub-urban scale. Together, this temporal and spatial resolution improves emission inventories, monitors population exposure, and enables effective emission-control strategies. TEMPO takes advantage of a GEO host spacecraft to provide a modest cost mission that measures the spectra required to retrieve O3, NO2, SO2, H2CO, C2H2O2, H2O, aerosols, cloud parameters, and UVB radiation. TEMPO thus measures the major elements, directly or by proxy, in the tropospheric O3 chemistry cycle. Multi-spectral observations provide sensitivity to O3 in the lowermost troposphere, reducing uncertainty in air quality predictions by 50%. TEMPO quantifies and tracks the evolution of aerosol loading. It provides near-real-time air quality products that will be made widely, publicly available. TEMPO provides much of the atmospheric measurement capability recommended for GEO-CAPE in the 2007 National Research Council Decadal Survey, Earth Science and Applications from Space: National Imperatives for the Next Decade and Beyond. GEO-CAPE is not planned for implementation this decade. However, instruments from Europe (Sentinel 4) and Asia (GEMS) will form parts of a global GEO constellation for pollution monitoring later this decade, with a major focus on intercontinental

  3. TEMPO-Oxidized Cellulose with High Degree of Oxidation

    OpenAIRE

    Zuwu Tang; Wenyan Li; Xinxing Lin; He Xiao; Qingxian Miao; Liulian Huang; Lihui Chen; Hui Wu

    2017-01-01

    In this paper, water-soluble 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-oxidized cellulose with a high degree of oxidation was prepared by a two-step process using bamboo dissolving pulp. The first step was to destroy the cellulose crystal I by NaOH/urea solution to obtain cellulose powder with decreased crystallinity. The second step was to oxidize the cellulose powder by TEMPO oxidation. The TEMPO-oxidized cellulose was analyzed by Fourier transform infrared spectroscopy (FTIR), conductim...

  4. Escola de tempo integral ou escola fora do tempo escolar: o caso de Barretos

    OpenAIRE

    Fontana, Silene

    2013-01-01

    O presente trabalho objetiva analisar, por meio de dois estudos de caso, alguns movimentos realizados para a construção do currículo da Educação de Tempo Integral em um contexto educacional formado pela parceria entre duas instituições: uma escola de ensino fundamental, que compreende a dimensão formal da educação e um Centro Social Urbano (CSU), instituição socioeducativa que representa a dimensão não formal da educação, ambos localizados na cidade de Barretos (SP). Este estudo desenvolveu-s...

  5. La trama del cosmo spazio, tempo, realtà

    CERN Document Server

    Greene, Brian

    2004-01-01

    Dal regno immutabile di Newton, dove lo spazio e il tempo sono assoluti, alla concezione fluida dello spazio-tempo di Einstein, alle tesi della meccanica quantistica, il fisico americano mostra come il mondo sia molto diverso da quello che l'esperienza comune potrebbe far pensare. Concentrandosi sull'enigma del tempo, Greene stabilisce che nessuna regola fisica conferma l'idea che esso scorra in una particolare direzione. Attraverso l'analisi della teoria del big bang, dimostra quanto le recenti teorie delle superstringhe e la M-teoria possano conciliare ogni cosa, dalla più piccola particella al più grande buco nero. Una visione che culmina in un "multiverso" dove spazio e tempo possono dissolversi in entità più sottili e fondamentali.

  6. TEMPO-Oxidized Cellulose with High Degree of Oxidation

    Directory of Open Access Journals (Sweden)

    Zuwu Tang

    2017-09-01

    Full Text Available In this paper, water-soluble 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO-oxidized cellulose with a high degree of oxidation was prepared by a two-step process using bamboo dissolving pulp. The first step was to destroy the cellulose crystal I by NaOH/urea solution to obtain cellulose powder with decreased crystallinity. The second step was to oxidize the cellulose powder by TEMPO oxidation. The TEMPO-oxidized cellulose was analyzed by Fourier transform infrared spectroscopy (FTIR, conductimetry, X-ray diffraction (XRD, fiber analyzer, and transmission electron microscopy (TEM. FTIR showed that the hydroxymethyl groups in cellulose chains were converted into carboxyl groups. The degree of oxidation measured by conductimetry titration was as high as 91.0%. The TEMPO-oxidized cellulose was soluble in water for valuable polyelectrolytes and intermediates.

  7. Influence of Tempo and Rhythmic Unit in Musical Emotion Regulation

    National Research Council Canada - National Science Library

    Fernández-Sotos, Alicia; Fernández-Caballero, Antonio; Latorre, José M

    2016-01-01

    .... The two musical cues under investigation are tempo and rhythmic unit. The participants are asked to label music fragments by using opposite meaningful words belonging to four semantic scales, namely "Tension...

  8. Leading change: evidence-based transition.

    Science.gov (United States)

    Lewis, Brennan; Allen, Stephanie

    2015-01-01

    The purpose of this article was to provide a framework for evidence-based transition of patient populations within an acute care pediatric institution. Transition within a hospital is foreseeable, given the ever-changing needs of the patients within an evolving healthcare system. These changes include moving patient populations because of expansion, renovation, or cohorting similar patient diagnoses to provide care across a continuum. Over the past 1 to 2 years, Children's Health Children's Medical Center Dallas has experienced a wide variety of transition. To provide a smooth transition for patients and families into new care areas resulting in a healthy work environment for all team members. The planning phase for patient population moves, and transition should address key aspects to include physical location and care flow, supplies and equipment, staffing model and human resources (HR), education and orientation, change process and integrating teams, and family preparation. It is imperative to consider these aspects in order for transitions within a healthcare system to be successful. During a time of such transitions, the clinical nurse specialist (CNS) is a highly valuable team member offering a unique perspective and methodological approach, which is central to the new initiative's overall success. The themes addressed in this article on evidence-based transition are organized according to the CNS spheres of influence: system/organization, patient/family, and nursing. An evidence-based transition plan was developed and implemented successfully with the support from the CNS for 3 patient populations. Organizational leadership gained an increased awareness of the CNS role at the conclusion of each successful transition. The CNS plays a pivotal role as clinical experts and proponents of evidence-based practice and effects change in the system/organization, nursing, and patient/family spheres of influence. While transitions can be a source of stress for leaders

  9. Scene change detection based on multimodal integration

    Science.gov (United States)

    Zhu, Yingying; Zhou, Dongru

    2003-09-01

    Scene change detection is an essential step to automatic and content-based video indexing, retrieval and browsing. In this paper, a robust scene change detection and classification approach is presented, which analyzes audio, visual and textual sources and accounts for their inter-relations and coincidence to semantically identify and classify video scenes. Audio analysis focuses on the segmentation of audio stream into four types of semantic data such as silence, speech, music and environmental sound. Further processing on speech segments aims at locating speaker changes. Video analysis partitions visual stream into shots. Text analysis can provide a supplemental source of clues for scene classification and indexing information. We integrate the video and audio analysis results to identify video scenes and use the text information detected by the video OCR technology or derived from transcripts available to refine scene classification. Results from single source segmentation are in some cases suboptimal. By combining visual, aural features adn the accessorial text information, the scence extraction accuracy is enhanced, and more semantic segmentations are developed. Experimental results are proven to rather promising.

  10. Néron Models and Base Change

    DEFF Research Database (Denmark)

    Halle, Lars Halvard; Nicaise, Johannes

    Presenting the first systematic treatment of the behavior of Néron models under ramified base change, this book can be read as an introduction to various subtle invariants and constructions related to Néron models of semi-abelian varieties, motivated by concrete research problems and complemented...... of abelian varieties. The final chapter contains a list of challenging open questions. This book is aimed towards researchers with a background in algebraic and arithmetic geometry......Presenting the first systematic treatment of the behavior of Néron models under ramified base change, this book can be read as an introduction to various subtle invariants and constructions related to Néron models of semi-abelian varieties, motivated by concrete research problems and complemented...... with explicit examples. Néron models of abelian and semi-abelian varieties have become an indispensable tool in algebraic and arithmetic geometry since Néron introduced them in his seminal 1964 paper. Applications range from the theory of heights in Diophantine geometry to Hodge theory. We focus specifically...

  11. Néron models and base change

    CERN Document Server

    Halle, Lars Halvard

    2016-01-01

    Presenting the first systematic treatment of the behavior of Néron models under ramified base change, this book can be read as an introduction to various subtle invariants and constructions related to Néron models of semi-abelian varieties, motivated by concrete research problems and complemented with explicit examples. Néron models of abelian and semi-abelian varieties have become an indispensable tool in algebraic and arithmetic geometry since Néron introduced them in his seminal 1964 paper. Applications range from the theory of heights in Diophantine geometry to Hodge theory. We focus specifically on Néron component groups, Edixhoven’s filtration and the base change conductor of Chai and Yu, and we study these invariants using various techniques such as models of curves, sheaves on Grothendieck sites and non-archimedean uniformization. We then apply our results to the study of motivic zeta functions of abelian varieties. The final chapter contains a list of challenging open questions. This book is a...

  12. Ethics Based Model for Change Management

    OpenAIRE

    Bashir, Jibran; Afzal, Sara

    2008-01-01

    Change is a common element present in all businesses despite of size, industry and age. Dynamic environment calls for a constant change and to be successful in today’s challenging business world it is vital for an organization to frequently evaluate the need for initiating changes. But along with the demands for change, critical questions regarding the ethics in change management must be recognized and dealt by those who initiate and implement the change. Ethics of change is the missing...

  13. Tempo and mode in the macroevolutionary reconstruction of Darwinism.

    Science.gov (United States)

    Gould, S J

    1994-01-01

    Among the several central meanings of Darwinism, his version of Lyellian uniformitarianism--the extrapolationist commitment to viewing causes of small-scale, observable change in modern populations as the complete source, by smooth extension through geological time, of all magnitudes and sequences in evolution--has most contributed to the causal hegemony of microevolution and the assumption that paleontology can document the contingent history of life but cannot act as a domain of novel evolutionary theory. G. G. Simpson tried to combat this view of paleontology as theoretically inert in his classic work, Tempo and Mode in Evolution (1944), with a brilliant argument that the two subjects of his title fall into a unique paleontological domain and that modes (processes and causes) can be inferred from the quantitative study of tempos (pattern). Nonetheless, Simpson did not cash out his insight to paleontology's theoretical benefit because he followed the strict doctrine of the Modern Synthesis. He studied his domain of potential theory and concluded that no actual theory could be found--and that a full account of causes could therefore be located in the microevolutionary realm after all. I argue that Simpson was unduly pessimistic and that modernism's belief in reductionistic unification (the conventional view of Western intellectuals from the 1920s to the 1950s) needs to be supplanted by a postmodernist commitment to pluralism and multiple levels of causation. Macro- and microevolution should not be viewed as opposed, but as truly complementary. I describe the two major domains where a helpful macroevolutionary theory may be sought--unsmooth causal boundaries between levels (as illustrated by punctuated equilibrium and mass extinction) and hierarchical expansion of the theory of natural selection to levels both below (gene and cell-line) and above organisms (demes, species, and clades). Problems remain in operationally defining selection at non-organismic levels

  14. Status of Tropospheric Emissions: Monitoring of Pollution (TEMPO)

    Science.gov (United States)

    Chance, K.; Liu, X.; Suleiman, R. M.; Flittner, D. E.; Al-Saadi, J. A.; Janz, S. J.

    2016-12-01

    TEMPO is now in the Assembly, Integration and Test (AI&T) phase, having passed its Key Decision Point C, Critical Design Reviews (CDRs) for the instrument and the ground systems, and the Test Readiness Review (TRR). The TEMPO instrument is scheduled for delivery in August 2017. The request for proposals to host TEMPO on a commercial geostationary satellite is scheduled for release by May 2017, with host selection hopefully completed by the end of calendar 2017. TEMPO is thus on schedule to measure atmospheric pollution for greater North America from space using ultraviolet and visible spectroscopy. TEMPO measures from Mexico City and Cuba to the Canadian oil sands, and from the Atlantic to the Pacific, hourly and at high spatial resolution. It provides a measurement suite that includes the key elements of tropospheric air pollution chemistry. Measurements are from geostationary (GEO) orbit, to capture the high variability in the diurnal cycle of emissions and chemistry. The small spatial footprint resolves pollution sources at sub-urban scale. Together, this temporal and spatial resolution improves emission inventories, monitors population exposure, and enables effective emission-control strategies.TEMPO takes advantage of a GEO host spacecraft to provide a mission that measures the spectra required to retrieve O3, NO2, SO2, H2CO, C2H2O2, H2O, aerosols, cloud parameters, and UVB radiation. TEMPO thus measures the major elements, directly or by proxy, in the tropospheric O3 chemistry cycle. Multi-spectral observations provide sensitivity to O3 in the lowermost troposphere, substantially reducing uncertainty in air quality predictions. TEMPO quantifies and tracks the evolution of aerosol loading. It provides near-real-time air quality products that will be made widely, publicly available.TEMPO provides much of the atmospheric measurement capability recommended for GEO-CAPE in the 2007 National Research Council Decadal Survey, Earth Science and Applications from Space

  15. Individual differences in boys' and girls' timing and tempo of puberty: modeling development with nonlinear growth models.

    Science.gov (United States)

    Marceau, Kristine; Ram, Nilam; Houts, Renate M; Grimm, Kevin J; Susman, Elizabeth J

    2011-09-01

    Pubertal development is a nonlinear process progressing from prepubescent beginnings through biological, physical, and psychological changes to full sexual maturity. To tether theoretical concepts of puberty with sophisticated longitudinal, analytical models capable of articulating pubertal development more accurately, we used nonlinear mixed-effects models to describe both the timing and tempo of pubertal development in the sample of 364 White boys and 373 White girls measured across 6 years as part of the National Institute of Child Health and Human Development Study of Early Child Care and Youth Development. Individual differences in timing and tempo were extracted with models of logistic growth. Differential relations emerged for how boys' and girls' timing and tempo of development were related to physical characteristics (body mass index, height, and weight) and psychological outcomes (internalizing problems, externalizing problems, and risky sexual behavior). Timing and tempo are associated in boys but not girls. Pubertal timing and tempo are particularly important for predicting psychological outcomes in girls but only sparsely related to boys' psychological outcomes. Results highlight the importance of considering the nonlinear nature of puberty and expand the repertoire of possibilities for examining important aspects of how and when pubertal processes contribute to development.

  16. Human Brain Basis of Musical Rhythm Perception: Common and Distinct Neural Substrates for Meter, Tempo, and Pattern

    Directory of Open Access Journals (Sweden)

    Michael H. Thaut

    2014-06-01

    Full Text Available Rhythm as the time structure of music is composed of distinct temporal components such as pattern, meter, and tempo. Each feature requires different computational processes: meter involves representing repeating cycles of strong and weak beats; pattern involves representing intervals at each local time point which vary in length across segments and are linked hierarchically; and tempo requires representing frequency rates of underlying pulse structures. We explored whether distinct rhythmic elements engage different neural mechanisms by recording brain activity of adult musicians and non-musicians with positron emission tomography (PET as they made covert same-different discriminations of (a pairs of rhythmic, monotonic tone sequences representing changes in pattern, tempo, and meter, and (b pairs of isochronous melodies. Common to pattern, meter, and tempo tasks were focal activities in right, or bilateral, areas of frontal, cingulate, parietal, prefrontal, temporal, and cerebellar cortices. Meter processing alone activated areas in right prefrontal and inferior frontal cortex associated with more cognitive and abstract representations. Pattern processing alone recruited right cortical areas involved in different kinds of auditory processing. Tempo processing alone engaged mechanisms subserving somatosensory and premotor information (e.g., posterior insula, postcentral gyrus. Melody produced activity different from the rhythm conditions (e.g., right anterior insula and various cerebellar areas. These exploratory findings suggest the outlines of some distinct neural components underlying the components of rhythmic structure.

  17. Human brain basis of musical rhythm perception: common and distinct neural substrates for meter, tempo, and pattern.

    Science.gov (United States)

    Thaut, Michael H; Trimarchi, Pietro Davide; Parsons, Lawrence M

    2014-06-17

    Rhythm as the time structure of music is composed of distinct temporal components such as pattern, meter, and tempo. Each feature requires different computational processes: meter involves representing repeating cycles of strong and weak beats; pattern involves representing intervals at each local time point which vary in length across segments and are linked hierarchically; and tempo requires representing frequency rates of underlying pulse structures. We explored whether distinct rhythmic elements engage different neural mechanisms by recording brain activity of adult musicians and non-musicians with positron emission tomography (PET) as they made covert same-different discriminations of (a) pairs of rhythmic, monotonic tone sequences representing changes in pattern, tempo, and meter, and (b) pairs of isochronous melodies. Common to pattern, meter, and tempo tasks were focal activities in right, or bilateral, areas of frontal, cingulate, parietal, prefrontal, temporal, and cerebellar cortices. Meter processing alone activated areas in right prefrontal and inferior frontal cortex associated with more cognitive and abstract representations. Pattern processing alone recruited right cortical areas involved in different kinds of auditory processing. Tempo processing alone engaged mechanisms subserving somatosensory and premotor information (e.g., posterior insula, postcentral gyrus). Melody produced activity different from the rhythm conditions (e.g., right anterior insula and various cerebellar areas). These exploratory findings suggest the outlines of some distinct neural components underlying the components of rhythmic structure.

  18. [Motivating health education-based change].

    Science.gov (United States)

    Puerto-Guerrero, Ana H

    2012-06-01

    The following work refers to academic experience regarding the training of nurses concerning primary prevention and child nursing within the area of public health. The target population consisted of children. Accumulated experience was systematized for identifying epistemological, theoretical and practical elements developed over five years in basic primary education institutions, in line with the educational proposal Experience sexuality with dignity. It was found that this type of work managed to develop special motivation in the scholastic community whilst allowing academics to approach the social reality which they must confront in their professional practice. The work emphasised strengthening children's awareness of the need for family, state and civil society participation. Motivating health education-based change did involve the systematisation of experience as a methodological tool.

  19. Volatiles and the tempo of flood basalt magmatism

    Science.gov (United States)

    Black, Benjamin A.; Manga, Michael

    2017-01-01

    Individual flood basalt lavas often exceed 103 km3 in volume, and many such lavas erupt during emplacement of flood basalt provinces. The large volume of individual flood basalt lavas implies correspondingly large magma reservoirs within or at the base of the crust. To erupt, some fraction of this magma must become buoyant and overpressure must be sufficient to encourage failure and dike propagation. The overpressure associated with a new injection of magma is inversely proportional to the total reservoir volume, and as a large magma body heats the surrounding rocks thermally activated creep will relax isotropic overpressure more rapidly. Here, we examine the viability of buoyancy overpressure as a trigger for continental flood basalt eruptions. We employ a new one-dimensional model that combines volatile exsolution, bubble growth and rise, assimilation, and permeable fluid escape from Moho-depth and crustal chambers. We investigate the temporal evolution of degassing and the eruptibility of magmas using the Siberian Traps flood basalts as a test case. We suggest that the volatile inventory set during mantle melting and redistributed via bubble motion controls ascent of magma into and through the crust, thereby regulating the tempo of flood basalt magmatism. Volatile-rich melts from low degrees of partial melting of the mantle are buoyant and erupt to the surface with little staging or crustal interaction. Melts with moderate volatile budgets accumulate in large, mostly molten magma chambers at the Moho or in the lower crust. These large magma bodies may remain buoyant and poised to erupt-triggered by volatile-rich recharge or external stresses-for ∼106 yr. If and when such chambers fail, enormous volumes of magma can ascend into the upper crust, staging at shallow levels and initiating substantial assimilation that contributes to pulses of large-volume flood basalt eruption. Our model further predicts that the Siberian Traps may have released 1019-1020 g of CO2

  20. The shape and tempo of language evolution

    Science.gov (United States)

    Greenhill, S. J.; Atkinson, Q. D.; Meade, A.; Gray, R. D.

    2010-01-01

    There are approximately 7000 languages spoken in the world today. This diversity reflects the legacy of thousands of years of cultural evolution. How far back we can trace this history depends largely on the rate at which the different components of language evolve. Rates of lexical evolution are widely thought to impose an upper limit of 6000–10 000 years on reliably identifying language relationships. In contrast, it has been argued that certain structural elements of language are much more stable. Just as biologists use highly conserved genes to uncover the deepest branches in the tree of life, highly stable linguistic features hold the promise of identifying deep relationships between the world's languages. Here, we present the first global network of languages based on this typological information. We evaluate the relative evolutionary rates of both typological and lexical features in the Austronesian and Indo-European language families. The first indications are that typological features evolve at similar rates to basic vocabulary but their evolution is substantially less tree-like. Our results suggest that, while rates of vocabulary change are correlated between the two language families, the rates of evolution of typological features and structural subtypes show no consistent relationship across families. PMID:20375050

  1. Monitoramento de tempo e temperatura de distribuição de preparações à base de carne em escolas municipais de Natal (RN, Brasil Monitoring exposure time and distribution temperature of meat-based meals served in municipal schools in Natal, Brazil

    Directory of Open Access Journals (Sweden)

    Monique Silveira Rosa

    2008-02-01

    Full Text Available OBJETIVO: Monitorar o tempo e a temperatura de distribuição de preparações à base de carne servidas em escolas municipais de Natal (RN. MÉTODOS: Foram selecionadas 27 escolas da rede municipal de ensino, de forma aleatória, divididas em estratos por diferentes regiões administrativas. As medições de temperatura de preparações à base de carne foram verificadas quatro vezes em cada escola e o tempo de exposição destas foi verificado ao final da cocção e no início e no final da distribuição, com um termômetro digital do tipo espeto e relógio digital. Os resultados foram comparados com os padrões da resolução da diretoria colegiada nº 216/2004, da Agência Nacional de Vigilância Sanitária do Ministério da Saúde. RESULTADOS: Para temperatura de cocção, 100% das escolas apresentaram-se dentro dos padrões (acima de 70ºC. Entretanto, no início e no final da distribuição, 100% das escolas das Regiões Leste e Sul apresentaram temperaturas inadequadas (abaixo de 60ºC. Na Região Oeste 70% das escolas apresentaram temperaturas em desacordo no início da distribuição e 90% no final dessa etapa. Na Região Norte verificou-se que 91% das escolas apresentaram temperaturas impróprias no início e 82% no final da distribuição. As médias do tempo de espera das preparações foram de 59, 49, 66 e 48 minutos para as regiões Leste, Oeste, Norte e Sul, respectivamente. CONCLUSÃO: Há necessidade da adoção de Boas Práticas nas escolas municipais de Natal, a fim de uma manutenção efetiva da temperatura de distribuição das refeições no intuito de garantir uma alimentação de qualidade sanitária satisfatória aos escolares, evitando-se as intoxicações alimentares decorrentes da ineficácia das temperaturas.OBJECTIVE: To monitor exposure time and temperature of meat-based meals served in municipal schools in Natal, Brazil. METHODS: Twenty-seven municipal schools were randomly selected and stratified by

  2. Albuminuria and tolvaptan in autosomal-dominant polycystic kidney disease : results of the TEMPO 3:4 Trial

    NARCIS (Netherlands)

    Gansevoort, Ron T.; Meijer, Esther; Chapman, Arlene B.; Czerwiec, Frank S.; Devuyst, Olivier; Grantham, Jared J.; Higashihara, Eiji; Krasa, Holly B.; Ouyang, John; Perrone, Ronald D.; Torres, Vicente E.

    2016-01-01

    The TEMPO 3:4 Trial results suggested that tolvaptan had no effect compared with placebo on albuminuria in autosomal-dominant polycystic kidney disease (ADPKD) patients. However, the use of categorical 'albuminuria events' may have resulted in a loss of sensitivity to detect changes. The aim of this

  3. Individual differences in the biomechanical effect of loudness and tempo on upper-limb movements during repetitive piano keystrokes.

    Science.gov (United States)

    Furuya, Shinichi; Aoki, Tomoko; Nakahara, Hidehiro; Kinoshita, Hiroshi

    2012-02-01

    The present study addressed the effect of loudness and tempo on kinematics and muscular activities of the upper extremity during repetitive piano keystrokes. Eighteen pianists with professional music education struck two keys simultaneously and repetitively with a combination of four loudness levels and four tempi. The results demonstrated a significant interaction effect of loudness and tempo on peak angular velocity for the shoulder, elbow, wrist and finger joints, mean muscular activity for the corresponding flexors and extensors, and their co-activation level. The interaction effect indicated greater increases with tempo when eliciting louder tones for all joints and muscles except for the elbow velocity showing a greater decrease with tempo. Multiple-regression analysis and K-means clustering further revealed that 18 pianists were categorized into three clusters with different interaction effects on joint kinematics. These clusters were characterized by either an elbow-velocity decrease and a finger-velocity increase, a finger-velocity decrease with increases in shoulder and wrist velocities, or a large elbow-velocity decrease with a shoulder-velocity increase when increasing both loudness and tempo. Furthermore, the muscular load considerably differed across the clusters. These findings provide information to determine muscles with the greatest potential risk of playing-related disorders based on movement characteristics of individual pianists. Copyright © 2011 Elsevier B.V. All rights reserved.

  4. TFR for males in Denmark: Calculation and tempo-correction

    Directory of Open Access Journals (Sweden)

    Francisca Nordfalk

    2015-06-01

    Full Text Available Background: Studies of trends and tempo corrections of fertility have focused on female rather than male fertility; one reason being that the necessary detailed data are more widely available for mothers than for fathers. Objective: The objective is to present a demographic overview of the fertility trends of Danish men and women from 1980 to 2010. We review the differences in male and female fertility and perform separate tempo corrections for fathers and mothers. Methods: The material for this study consisted of basic data on male and female fertility. The data included all children born in the period, specified by birth year of the child and age and parity of the mother and father, respectively. We used standard demographic measurements of fertility, primarily the total fertility rate (TFR and the tempo-corrections as proposed by Bongaarts and Feeney (1998. Results: The female fertility rates were generally higher than those for males, but the TFRs of both Danish men and women generally increased over the period. The unadjusted and the adjusted fertility rates had similar patterns for men and women. A negative tempo-effect was more evident for women than for men, and a vanishing effect for men at the end of the period was not similarly observed for women. Conclusions: We have exemplified tempo corrections for male as well as female fertility, and have discussed specific problems in this context. Our study indicates that the postponement of childbearing is about to end for Danish men.

  5. O tempo no meio da noite:1 uma análise do tempo de Benjy e de Quentin em O som e a fúria de William Faulkner

    Directory of Open Access Journals (Sweden)

    Alessandra Matias Querido

    2016-04-01

    Full Text Available A impressão de que o tempo flui no meio da noite é constante ao lermos O som e a fúria de William Faulkner, principalmente nos dois primeiros capítulos. O primeiro apresenta o ponto de vista de um deficiente mental, Benjy Compson, o qual não tem noção de tempo e narra passado e presente simultaneamente, o que leva o leitor a se sentir no escuro. O segundo apresenta a narrativa do ponto de vista de Quentin Compson, personagem que vive na escuridão do passado em um pessimismo que beira o niilismo. Com base nos conceitos de simultaneidade do filósofo Henri Bergson e de niilismo de Friedrich Nietzsche, discutiremos a questão do tempo para Faulkner.

  6. A percepção do tempo em Husserl

    Directory of Open Access Journals (Sweden)

    Alfredo Pereira Júnior

    1990-01-01

    Full Text Available Apresentamos uma breve reconstrução das duas primeiras seções de Vorlensungen zur Phänomenologie des inneren Zeitbewusstseins, de Edmund Husserl, em que analisamos a maneira pela qual ele desenvolve uma teoria transcendental do tempo, trazendo-a para o campo de seu método fenomenológico. A partir de uma reavaliação do significado de "percepção do tempo", ele oferece critérios que, a nosso ver, seriam capazes de dar conta de uma das características mais discutidas do tempo, sua assimetria ou unidirecionalidade. Discutimos também as principais dificuldades enfrentadas por este projeto.

  7. Spontaneous tempo and rhythmic entrainment in a bonobo (Pan paniscus).

    Science.gov (United States)

    Large, Edward W; Gray, Patricia M

    2015-11-01

    The emergence of speech and music in the human species represent major evolutionary transitions that enabled the use of complex, temporally structured acoustic signals to coordinate social interaction. While the fundamental capacity for temporal coordination with complex acoustic signals has been shown in a few distantly related species, the extent to which nonhuman primates exhibit sensitivity to auditory rhythms remains controversial. In Experiment 1, we assessed spontaneous motor tempo and tempo matching in a bonobo (Pan paniscus), in the context of a social drumming interaction. In Experiment 2, the bonobo spontaneously entrained and synchronized her drum strikes within a range around her spontaneous motor tempo. Our results are consistent with the hypothesis that the evolution of acoustic communication builds upon fundamental neurodynamic mechanisms that can be found in a wide range of species, and are recruited for social interactions. (c) 2015 APA, all rights reserved).

  8. Directed Motor-Auditory EEG Connectivity Is Modulated by Music Tempo

    Science.gov (United States)

    Nicolaou, Nicoletta; Malik, Asad; Daly, Ian; Weaver, James; Hwang, Faustina; Kirke, Alexis; Roesch, Etienne B.; Williams, Duncan; Miranda, Eduardo R.; Nasuto, Slawomir J.

    2017-01-01

    Beat perception is fundamental to how we experience music, and yet the mechanism behind this spontaneous building of the internal beat representation is largely unknown. Existing findings support links between the tempo (speed) of the beat and enhancement of electroencephalogram (EEG) activity at tempo-related frequencies, but there are no studies looking at how tempo may affect the underlying long-range interactions between EEG activity at different electrodes. The present study investigates these long-range interactions using EEG activity recorded from 21 volunteers listening to music stimuli played at 4 different tempi (50, 100, 150 and 200 beats per minute). The music stimuli consisted of piano excerpts designed to convey the emotion of “peacefulness”. Noise stimuli with an identical acoustic content to the music excerpts were also presented for comparison purposes. The brain activity interactions were characterized with the imaginary part of coherence (iCOH) in the frequency range 1.5–18 Hz (δ, θ, α and lower β) between all pairs of EEG electrodes for the four tempi and the music/noise conditions, as well as a baseline resting state (RS) condition obtained at the start of the experimental task. Our findings can be summarized as follows: (a) there was an ongoing long-range interaction in the RS engaging fronto-posterior areas; (b) this interaction was maintained in both music and noise, but its strength and directionality were modulated as a result of acoustic stimulation; (c) the topological patterns of iCOH were similar for music, noise and RS, however statistically significant differences in strength and direction of iCOH were identified; and (d) tempo had an effect on the direction and strength of motor-auditory interactions. Our findings are in line with existing literature and illustrate a part of the mechanism by which musical stimuli with different tempi can entrain changes in cortical activity. PMID:29093672

  9. Directed Motor-Auditory EEG Connectivity Is Modulated by Music Tempo.

    Science.gov (United States)

    Nicolaou, Nicoletta; Malik, Asad; Daly, Ian; Weaver, James; Hwang, Faustina; Kirke, Alexis; Roesch, Etienne B; Williams, Duncan; Miranda, Eduardo R; Nasuto, Slawomir J

    2017-01-01

    Beat perception is fundamental to how we experience music, and yet the mechanism behind this spontaneous building of the internal beat representation is largely unknown. Existing findings support links between the tempo (speed) of the beat and enhancement of electroencephalogram (EEG) activity at tempo-related frequencies, but there are no studies looking at how tempo may affect the underlying long-range interactions between EEG activity at different electrodes. The present study investigates these long-range interactions using EEG activity recorded from 21 volunteers listening to music stimuli played at 4 different tempi (50, 100, 150 and 200 beats per minute). The music stimuli consisted of piano excerpts designed to convey the emotion of "peacefulness". Noise stimuli with an identical acoustic content to the music excerpts were also presented for comparison purposes. The brain activity interactions were characterized with the imaginary part of coherence (iCOH) in the frequency range 1.5-18 Hz (δ, θ, α and lower β) between all pairs of EEG electrodes for the four tempi and the music/noise conditions, as well as a baseline resting state (RS) condition obtained at the start of the experimental task. Our findings can be summarized as follows: (a) there was an ongoing long-range interaction in the RS engaging fronto-posterior areas; (b) this interaction was maintained in both music and noise, but its strength and directionality were modulated as a result of acoustic stimulation; (c) the topological patterns of iCOH were similar for music, noise and RS, however statistically significant differences in strength and direction of iCOH were identified; and (d) tempo had an effect on the direction and strength of motor-auditory interactions. Our findings are in line with existing literature and illustrate a part of the mechanism by which musical stimuli with different tempi can entrain changes in cortical activity.

  10. Directed Motor-Auditory EEG Connectivity Is Modulated by Music Tempo

    Directory of Open Access Journals (Sweden)

    Nicoletta Nicolaou

    2017-10-01

    Full Text Available Beat perception is fundamental to how we experience music, and yet the mechanism behind this spontaneous building of the internal beat representation is largely unknown. Existing findings support links between the tempo (speed of the beat and enhancement of electroencephalogram (EEG activity at tempo-related frequencies, but there are no studies looking at how tempo may affect the underlying long-range interactions between EEG activity at different electrodes. The present study investigates these long-range interactions using EEG activity recorded from 21 volunteers listening to music stimuli played at 4 different tempi (50, 100, 150 and 200 beats per minute. The music stimuli consisted of piano excerpts designed to convey the emotion of “peacefulness”. Noise stimuli with an identical acoustic content to the music excerpts were also presented for comparison purposes. The brain activity interactions were characterized with the imaginary part of coherence (iCOH in the frequency range 1.5–18 Hz (δ, θ, α and lower β between all pairs of EEG electrodes for the four tempi and the music/noise conditions, as well as a baseline resting state (RS condition obtained at the start of the experimental task. Our findings can be summarized as follows: (a there was an ongoing long-range interaction in the RS engaging fronto-posterior areas; (b this interaction was maintained in both music and noise, but its strength and directionality were modulated as a result of acoustic stimulation; (c the topological patterns of iCOH were similar for music, noise and RS, however statistically significant differences in strength and direction of iCOH were identified; and (d tempo had an effect on the direction and strength of motor-auditory interactions. Our findings are in line with existing literature and illustrate a part of the mechanism by which musical stimuli with different tempi can entrain changes in cortical activity.

  11. A teia, a tela e o tempo: internet e história do tempo presente

    Directory of Open Access Journals (Sweden)

    Pedro Eurico Rodrigues

    2014-09-01

    Full Text Available O enfoque deste artigo será uma apresentação da pesquisa em história e Internet, pensando esta como um documento dentro dos estudos da História da Cultura Escrita e da Leitura. Ao propiciar novas formas de ler e escrever na contemporaneidade, a Internet perpassa por várias modalidades tais como os comunicadores instantâneos (MIRC e MSN, as redes sociais (Orkut, Facebook, notícias, vídeos entre outros. Com destaque a novos mecanismos de sociabilidade que funcionam como mediadores para interação entre grupos que utilizam as redes sociais. Os documentos são abordados na perspectiva da História do Tempo Presente, que possibilita pensarmos um passado-presente, em que os recuos e aproximações com as fontes são possibilitados pelas escolhas do historiador que problematiza este Presente Palavras-chave: História; Escrita; Leitura; Redes de Relações Sociais.

  12. Prenatal influences on size, velocity and tempo of infant growth: findings from three contemporary cohorts.

    Directory of Open Access Journals (Sweden)

    Costanza Pizzi

    Full Text Available Studying prenatal influences of early life growth is relevant to life-course epidemiology as some of its features have been linked to the onset of later diseases.We studied the association between prenatal maternal characteristics (height, age, parity, education, pre-pregnancy body mass index (BMI, smoking, gestational diabetes and hypertension and offspring weight trajectories in infancy using SuperImposition by Translation And Rotation (SITAR models, which parameterize growth in terms of three biologically interpretable parameters: size, velocity and tempo. We used data from three contemporary cohorts based in Portugal (GXXI, n=738, Italy (NINFEA, n=2,925, and Chile (GOCS, n=959.Estimates were generally consistent across the cohorts for maternal height, age, parity and pre-pregnancy overweight/obesity. Some exposures only affected one growth parameter (e.g. maternal height (per cm: 0.4% increase in size (95% confidence interval (CI:0.3; 0.5, others were either found to affect size and velocity (e.g. pre-pregnancy underweight vs normal weight: smaller size (-4.9%, 95% CI:-6.5; -3.3, greater velocity (5.9%, 95% CI:1.9;10.0, or to additionally influence tempo (e.g. pre-pregnancy overweight/obesity vs normal weight: increased size (7.9%, 95% CI:4.9;10.8, delayed tempo (0.26 months, 95% CI:0.11;0.41, decreased velocity (-4.9%, 95% CI: -10.8;0.9.By disentangling the growth parameters of size, velocity and tempo, we found that prenatal maternal characteristics, especially maternal smoking, pre-pregnancy overweight and underweight, parity and gestational hypertension, are associated with different aspects of infant weight growth. These results may offer insights into the mechanisms governing infant growth.

  13. Prenatal influences on size, velocity and tempo of infant growth: findings from three contemporary cohorts.

    Science.gov (United States)

    Pizzi, Costanza; Cole, Tim J; Richiardi, Lorenzo; dos-Santos-Silva, Isabel; Corvalan, Camila; De Stavola, Bianca

    2014-01-01

    Studying prenatal influences of early life growth is relevant to life-course epidemiology as some of its features have been linked to the onset of later diseases. We studied the association between prenatal maternal characteristics (height, age, parity, education, pre-pregnancy body mass index (BMI), smoking, gestational diabetes and hypertension) and offspring weight trajectories in infancy using SuperImposition by Translation And Rotation (SITAR) models, which parameterize growth in terms of three biologically interpretable parameters: size, velocity and tempo. We used data from three contemporary cohorts based in Portugal (GXXI, n=738), Italy (NINFEA, n=2,925), and Chile (GOCS, n=959). Estimates were generally consistent across the cohorts for maternal height, age, parity and pre-pregnancy overweight/obesity. Some exposures only affected one growth parameter (e.g. maternal height (per cm): 0.4% increase in size (95% confidence interval (CI):0.3; 0.5)), others were either found to affect size and velocity (e.g. pre-pregnancy underweight vs normal weight: smaller size (-4.9%, 95% CI:-6.5; -3.3), greater velocity (5.9%, 95% CI:1.9;10.0)), or to additionally influence tempo (e.g. pre-pregnancy overweight/obesity vs normal weight: increased size (7.9%, 95% CI:4.9;10.8), delayed tempo (0.26 months, 95% CI:0.11;0.41), decreased velocity (-4.9%, 95% CI: -10.8;0.9)). By disentangling the growth parameters of size, velocity and tempo, we found that prenatal maternal characteristics, especially maternal smoking, pre-pregnancy overweight and underweight, parity and gestational hypertension, are associated with different aspects of infant weight growth. These results may offer insights into the mechanisms governing infant growth.

  14. Modelo fuzzy estimando tempo de internação por doenças cardiovasculares

    Directory of Open Access Journals (Sweden)

    Karine Mayara Vieira Coutinho

    2015-08-01

    Full Text Available Resumo Para prever o tempo médio de internações por doenças cardiovasculares relacionadas à exposição de poluentes do ar em São José dos Campos (SP, em 2009, foi construído um modelo linguístico fuzzy, baseado no método de Mamdani, com variáveis de entrada: material particulado, dióxido de enxofre, temperatura e vento, obtidos da CETESB, com duas funções de pertinência cada. A variável de saída é o tempo médio de internações, obtido do Datasus, com seis funções de pertinência. O tempo médio fornecido pelo modelo foi comparado aos dados reais segundo defasagens de 0 a 4 dias. Este modelo foi construído no toolbox fuzzy do Matlab v. 7.5. Sua acurácia foi avaliada pela curva ROC. Foram registradas 1119 internações com o tempo médio de 7,9 dias (dp = 4,9. Os dados fornecidos mostraram significativa correlação com os dados reais, segundo as defasagens de 0 a 4 dias. O poluente que mostrou melhor acurácia foi o dióxido de enxofre. Este modelo pode ser utilizado como base de sistema especialista, que pode auxiliar o gestor municipal na avaliação do risco de internações em função dos poluentes do ar.

  15. Based Instructional Model on Students' Conceptual Change

    African Journals Online (AJOL)

    FIRST LADY

    Students' Conceptual Change and Retention on Some. Difficult Concepts in Chemistry (Pp. 219-229) ... social psychology indicated new insight into and understanding about the learning process, and acquisition of .... These misconception are held tenaciously and resistance to change. -. Traditional method of teaching ...

  16. WACANA KEAGAMAAN SYIAH-SUNNI DALAM MAJALAH TEMPO DAN SUARA HIDAYATULLAH

    Directory of Open Access Journals (Sweden)

    Dadang S Anshori

    2014-07-01

    Full Text Available This study aims to describe the language use as representation of mass media attitudes towards Shia-Sunni conflicts. It employed the qualitative method using Fowler’s critical discourse analysis. The data source was news on Shia-Sunni conflicts in Sampang reported in Tempo and Suara Hidayatullah magazines. The findings are as follows. First, Shia-Sunni conflicts are described in news headings and points of view. Tempo describes the conflicts using the point of view of ‘devil attack’ while Suara Hidayatullah presents them as conflicts of religious understanding. Second, expressions such as ‘belief forcing’, ‘Shia cleansing’, ‘devil attack’, and ‘intolerance’ represent Tempo’s attitudes while expressions such as ‘heretical’, ‘misleading’, ‘hijacking’, ‘deifying something’, and ‘infidel’ represent Suara Hidayatullah’s attitudes. Third, based on the use of vocabulary and sentences, Tempo tends to back the Shia group while Suara Hidayatullah tends to back the Sunni group.

  17. Tempo and mode in human evolution.

    Science.gov (United States)

    McHenry, H M

    1994-01-01

    The quickening pace of paleontological discovery is matched by rapid developments in geochronology. These new data show that the pattern of morphological change in the hominid lineage was mosaic. Adaptations essential to bipedalism appeared early, but some locomotor features changed much later. Relative to the highly derived postcrania of the earliest hominids, the craniodental complex was quite primitive (i.e., like the reconstructed last common ancestor with the African great apes). The pattern of craniodental change among successively younger species of Hominidae implies extensive parallel evolution between at least two lineages in features related to mastication. Relative brain size increased slightly among successively younger species of Australopithecus, expanded significantly with the appearance of Homo, but within early Homo remained at about half the size of Homo sapiens for almost a million years. Many apparent trends in human evolution may actually be due to the accumulation of relatively rapid shifts in successive species. PMID:8041697

  18. Tempo astorico e spazio mitologico nella riflessione e nella pratica ...

    African Journals Online (AJOL)

    Tempo astorico” e “spazio mitologico” in Pirandello? Esiste dunque un Pirandello mitologico? È possibile parlare non tanto di miti ma di vera e propria mitologia per uno scrittore come l'Agrigentino che è, senz'ombra di dubbio, il massimo drammaturgo italiano della modernità ed è conosciuto internazionalmente come ...

  19. tempo astorico e spazio mitologico nella riflessione e nella pratica ...

    African Journals Online (AJOL)

    User

    Tempo astorico” e “spazio mitologico” in Pirandello? Esiste dunque un Pirandello mitologico? È possibile parlare non tanto di miti ma di vera e propria mitologia per uno scrittore come l'Agrigentino che è, senz'ombra di dubbio, il massimo drammaturgo italiano della modernità ed è conosciuto internazionalmente come ...

  20. Apprendere una lingua straniera: tempo e spazio nella cultura italiana

    African Journals Online (AJOL)

    Apprendere una lingua straniera: tempo e spazio nella cultura italiana. C Samson. Abstract. La conoscenza di almeno una lingua straniera è uno degli obiettivi principali dei programmi culturali e scientifici dell'Unione europea che, all'incirca dalla metà degli anni 80, la riconosce come uno strumento qualificante al fine di ...

  1. The Tempo of Sexual Activity and Later Relationship Quality

    Science.gov (United States)

    Sassler, Sharon; Addo, Fenaba R.; Lichter, Daniel T.

    2012-01-01

    Rapid sexual involvement may have adverse long-term implications for relationship quality. This study examined the tempo of sexual intimacy and subsequent relationship quality in a sample of married and cohabiting men and women. Data come from the Marital and Relationship Survey, which provides information on nearly 600 low- to moderate-income…

  2. Por uma nova experiência do tempo moderno

    Directory of Open Access Journals (Sweden)

    Giselle Pereira Nicolau

    2016-06-01

    Full Text Available Resenha do livro: Futuro passado: contribuição à semântica dos tempos históricos, de Reinhart Koselleck. Trad. Wilma Patrícia Maas, Carlos Almeida Pereira. Rev. César Benjamin. Rio de Janeiro: Contraponto; Ed. PUC-Rio, 2006.

  3. Negative differential resistance of TEMPO molecules on Si(111)

    NARCIS (Netherlands)

    Hallbäck, A.S.V.M.; Poelsema, Bene; Zandvliet, Henricus J.W.

    2007-01-01

    Negative differential resistance (NDR) has been observed for individual 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO) molecules on Si(1 1 1) in ultra high vacuum (UHV) scanning tunneling microscopy (STM) and spectroscopy (STS) measurements at room temperature. NDR effects were observed exclusively at

  4. Emotional and psychophysiological responses to tempo, mode, and percussiveness

    NARCIS (Netherlands)

    van der Zwaag, Marjolein; Westerink, Joyce H.D.M.; van den Broek, Egon

    People often listen to music to influence their emotional state. However, the specific musical characteristics which cause this process are not yet fully understood. We have investigated the influence of the musical characteristics of tempo, mode and percussiveness on our emotions. In a quest

  5. Integrating TEMPO and Its Analogues with Visible-Light Photocatalysis.

    Science.gov (United States)

    Lang, Xianjun; Zhao, Jincai

    2018-01-16

    Visible light has risen to become a very important facilitator for selective radical reactions enabled by well-cognized photocatalysts. The renaissance of visible-light photocatalysis on this matter partly relies on integrating it with other fields of catalysis. In parallel, 2,2,6,6-tetramethylpiperidin N-oxide (TEMPO), a quintessential persistent radical, has a wide range of uses owing to its exceptional redox behavior, which gives rise to its latest prominence in catalysis. Therefore, integrating the catalysis of TEMPO with photocatalysis to perform visible-light-induced selective reactions becomes a very convenient marriage of merits. In this context, the integration of different types of photocatalysts, including metal complexes, metal-free organic dyes, and semiconductors, with TEMPO for outstanding organic transformations will be summarized. To expand further the catalytic repertoire, the integration of TEMPOH analogues such as NHPI (N-hydroxyphthalimide) and NHS (N-hydroxysuccinimide) with photocatalysis will also be discussed. Hopefully, these advances will pave the way for more breakthroughs by integrating TEMPO and its analogues with photocatalysis to lead to a valuable blueprint for visible-light-induced selective organic transformations. © 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

  6. No Tempo da camisolinha, um narrador da experiência

    OpenAIRE

    Almeida, Laura Beatriz Fonseca de [UNESP

    2003-01-01

    Leitura analítica do conto Tempo da camisolinha, extraído do livro Contos novos, de Mário de Andrade, visando a configurar as artimanhas de um narrador-protagonista que, ao rememorar as experiências de sua iniciação para a vida, promove uma profunda análise das sinceridades cabotinas do homem.

  7. Structure and properties of tempo-oxidized cotton fibers

    Directory of Open Access Journals (Sweden)

    Milanovic Jovana

    2012-01-01

    Full Text Available In this paper, the influence of the catalytic oxidation using water soluble and stable nitroxyl radical 2,2´,6,6´-tetramethylpiperidine-1-oxyl (TEMPO on structure and properties of cotton fibers was studied. In particular, the selective TEMPO-mediated oxidation has become very interesting way for introduction of functional groups into cellulose fibers with the aim to obtain oxycellulose fibers with specific properties. Unmodified and modified fibers were characterized in terms of weight loss values, introduced functional groups and crystallinity index. Also, oxidized fibers were characterized in terms of the sorption, morphological, and physico-mechanical properties. The TEMPO-oxidized cotton fibers show a minimum increase of fineness (from 1.32 to 1.28 dtex and increase of crystallinity index (up to 91.9%, while the tensile strength of fibers decreases (up to 10.82 cN/tex. By the TEMPO-mediated oxidation of cotton fibers significant amount of carboxyl groups (up to 0.795 mmol/g cell can be introduced into cellulose fibers. Introduced hydrophilic carboxyl groups increases the sorption properties of oxidized fibers, that can be used directly or for further chemical modification.

  8. Effects of Strategy Training on Tempo of Responding.

    Science.gov (United States)

    Haskins, Ron; Mizrahi, Rachel

    This paper reports two studies which examined the relationship between problem solving strategies, response latencies, and efficient performance on measures of conceptual tempo. Study I demonstrated that teaching 8-year-old children to use efficient strategies on problem-solving tasks increased both the quality of their performance and their…

  9. Atmosfera Versus Previsão do Tempo

    Directory of Open Access Journals (Sweden)

    Isimar de Azevedo Santos

    2011-01-01

    Full Text Available O presente trabalho aborda a dicotomia entre o entendimento do comportamento da real atmosfera por parte do homem e a resposta em termos de previsão do tempo proveniente de modelos numéricos. A Teoria do Caos, modelos Eulerianos e Lagrangeanos e ondas atmosféricas são temas abordados, revisados e criticados.

  10. DI TEMPO IN TEMPO... PROGETTO DI LABORATORI INTERCULTURALI A PARTIRE DALL’OROLOGIO PLANETARIO FANZAGO DELLA CITTÀ DI CLUSONE

    Directory of Open Access Journals (Sweden)

    Karin Borlini

    2012-07-01

    Full Text Available Lingua e cultura sono inscindibilmente legate. Conoscere la lingua italiana attraverso la scoperta delle ricchezze del patrimonio culturale locale si rivela, quindi, una possibile pratica didattica anche per l’insegnamento dell’italiano come L2. Ormai quasi tutti i musei e gli enti educativi del territorio propongono laboratori e progetti per le scuole, dall’infanzia alla secondaria. Purtroppo, spesso, non viene considerata, in queste scelte, la prospettiva interculturale.Il presente contributo vuole presentare delle possibili attività laboratoriali da proporre a classi plurilingui, finalizzate alla conoscenza del territorio, prendendo spunto da una visita guidata alla città di Clusone. Qui si trova un orologio planetario costruito nel 1583 e ancora funzionante. A partire dalla visita all’orologio, si accompagnano bambini e ragazzi attraverso un percorso che cerca di fornire un maggior consapevolezza della mutevolezza del concetto di tempo e della sua percezione, anche fisica, nelle diverse culture del mondo e in diversi periodi storici.FROM TIME TO TIME. A PROJECT FOR INTERCULTURAL WORKSHOPS STARTING FROM THE FANZANGO ASTRONOMICAL CLOCK IN THE CITY OF CLUSONELanguage and culture are inseparable. Learning Italian by discovering the richness of its local cultural heritage offers didactic possibilities for teaching Italian L2. Almost all museums and educational institutions offer workshops and projects for schools, from preschool to high school. Unfortunately, often these initiatives do not consider the intercultural perspective.This paper presents a possible workshop for multilingual classes aimed at getting to know the territory, inspired by a visiting the city of Clusone where there is a still functioning astronomical clock that was built in 1583. Starting from visiting the clock, the students are offered the opportunity to develop greater awareness regarding the changing concept of time, from perception to physical reality, in

  11. Édipo.Tempo, mito, psicopatologia,psicanálise

    Directory of Open Access Journals (Sweden)

    Maurício Silveira Garrote

    Full Text Available Este texto dá continuidade ao desenvolvimento da construção como instrumento da elaboração metapsicológica. Neste método, a partir dos sentimentos e fantasias gerados em seu psiquismo e em seu corpo durante a experiência de atendimento a pacientes com diagnóstico de esquizofrenia, o autor constrói uma narrativa literária que comporta a história de um tratamento e sua elaboração metapsicológica. No texto em questão, um Heráclito ficcional de inspiração heideggeriana utiliza os recursos da análise do ser-aí e da quadridimensionalidade do tempo para introduzir a idéia de que o tempo do tratamento psicanalítico é um tempo psicopatológico. Em seguida, um xamã de influência bergsoniana se apropriará da crítica da espacialização do tempo e da idéia do tempo como duração para introduzir um novo paradigma da compreensão médica da clínica, paradigma que propõe a contrapelo da visão da clínica como uma repetição dos acontecimentos memoráveis e equivalentes, uma concepção da clínica como processo cumulativo de enriquecimento do mundo mental do par médico-paciente.

  12. (Aiken 1980). Based on integumental changes, Drach

    African Journals Online (AJOL)

    spamer

    The entire exoskeleton is extremely soft. Stage B (Fig. 1b) – The setal walls begin to thicken. The setal lumen is narrower and less grainy, and the setal bases are well defined. The cuticle is relatively thin compared to Stage C. The exoskeleton starts to harden. Intermoult. Stage C can be divided into four substages, based.

  13. ADOLESCENTES COM SONOLÊNCIA DIURNA EXCESSIVA PASSAM MAIS TEMPO EM COMPORTAMENTO SEDENTÁRIO

    Directory of Open Access Journals (Sweden)

    Érico Pereira Gomes Felden

    Full Text Available RESUMO Introdução: A diminuição da atividade física, a baixa duração do sono e o aumento do tempo sentado têm sido cada vez mais percebidos na adolescência. Objetivos: Investigar a associação entre comportamento sedentário e variáveis de sono (sonolência diurna e duração de sono de adolescentes de um município de pequeno porte do sul do Brasil. Métodos: Trata-se de uma amostra representativa, de base escolar, do município de Maravilha, SC, Brasil, formada por 516 adolescentes de ambos os sexos, com 10 a 19 anos de idade. Foram investigadas as associações entre comportamentos sedentários, sono, percepção de estresse e atividade física. O comportamento sedentário foi investigado por meio do tempo sentado durante o dia. Além disso, outras questões foram investigadas, como: sexo, faixa etária, turno escolar, local de domicílio, renda e grau de instrução do chefe de família, duração do sono e sonolência diurna, percepção de estresse e nível de atividade física. Resultados: A prevalência de baixa duração do sono foi de 53,6%. A média de tempo sentado durante um dia de semana foi de 382,2 min., sendo superior no sexo feminino (p = 0,001. Os adolescentes com baixa duração do sono apresentaram valores médios mais altos de tempo sentado (p < 0,001, sonolência diurna (p < 0,001 e sonolência em sala de aula (p < 0,001. Os adolescentes com maior sonolência tinham 4,97 (IC: 2,50-9,87 vezes mais chance de ter comportamento sedentário elevado. Conclusão: Adolescentes com maior sonolência diurna apresentaram maior tempo dedicado aos comportamentos sedentários. Assim, as medidas de educação para um estilo de vida mais ativo na adolescência devem observar também questões gerais sobre sono e sonolência diurna.

  14. Effects of music tempo on performance, psychological, and physiological variables during 20 km cycling in well-trained cyclists.

    Science.gov (United States)

    2013-10-01

    Few studies have investigated the effects of music on trained athletes during high intensity endurance tasks. Therefore, this study investigated the effects of different music tempi on performance, psychological, and physiological responses of well-trained cyclists to time trial cycling. 10 male road cyclists (M age = 35 yr., SD = 7), with a minimum of three years racing experience, performed four 20-km time trials on a Computrainer Pro 3D indoor cycle trainer over a period of four weeks. The time-trials were spaced one week apart. The music conditions for each trial were randomised between fast-tempo (140 bpm), medium-tempo (120 bpm), slow-tempo (100 bpm), and no music. Performance (completion time, power output, average speed and cadence), physiological (heart rate, oxygen consumption, breathing frequency and respiratory exchange ratio), psychophysical (RPE), and psychological (mood states) data were collected for each trial. Results indicated no significant changes in performance, physiological, or psychophysical variables. Total mood disturbance and tension increased significantly in the fast-tempo trial when compared with medium and no-music conditions.

  15. Polyvinylamine-graft-TEMPO adsorbs onto, oxidizes, and covalently bonds to wet cellulose.

    Science.gov (United States)

    Pelton, Robert; Ren, Pengchao; Liu, Jieyi; Mijolovic, Darijo

    2011-04-11

    Described is a new, greener approach to increasing adhesion between wet cellulose surfaces. Polyvinylamine (PVAm) with grafted TEMPO spontaneously adsorbs onto cellulose and oxidizes the C6 hydroxyl to aldehyde groups that react to form covalent bonds with primary amines on PVAm. Grafted TEMPO offers two important advantages over solutions of low-molecular-weight water-soluble TEMPO derivatives. First, the oxidation of porous cellulose wood fibers is restricted to the exterior surfaces accessible to high-molecular-weight PVAm. Thus, fibers are not weakened by excessive oxidation of the interior fiber wall surfaces. The second advantage of tethered TEMPO is that the total dose of TEMPO required to oxidize dilute fiber suspensions is much less than that required by water-soluble TEMPO derivatives. PVAm-TEMPO is stable under oxidizing conditions. The oxidation activity of the immobilized TEMPO was demonstrated by the conversion of methylglyoxal to pyruvic acid.

  16. Organizational change tactics: the evidence base in the literature.

    Science.gov (United States)

    Packard, Thomas; Shih, Amber

    2014-01-01

    Planned organizational change processes can be used to address the many challenges facing human service organizations (HSOs) and improve organizational outcomes. There is massive literature on organizational change, ranging from popular management books to academic research on specific aspects of change. Regarding HSOs, there is a growing literature, including increasing attention to implementation science and evidence-based practices. However, research which offers generalizable, evidence-based guidelines for implementing change is not common. The purpose of the authors was to assess the evidence base in this organizational change literature to lay the groundwork for more systematic knowledge development in this important field.

  17. Novos tempos para nossa jovem Tempus

    Directory of Open Access Journals (Sweden)

    Ana Valéria Machado MENDONÇA

    2014-12-01

    Full Text Available A Revista Tempus Actas em Saúde Coletiva chega ao final de 2014 com muitos motivos para comemorar, muitas foram as vitórias, entre elas, o lançamento dos seus dois últimos números do ano. Ao lançarmos os Números 3 e 4, o primeiro nesta semana e o segundo na próxima, trazemos uma nova formatação visual, normativa e editorial, segundo as exigências da base de dados LILACS - Literatura Latino-Americana e do Caribe em Ciências da Saúde, um dos mais expressivosindexadoresda América Latina e Caribe.Isso mesmo, fomos avaliados positivamente e estamos a um passo de mais uma importante indexação para nosso periódico científico.

  18. Oltre lo spazio e il tempo la nuova fisica

    CERN Document Server

    Lachièze-Rey, Marc

    2004-01-01

    Oggi la fisica si fonda, allo stesso tempo, sulla meccanica quantistica e sulla relatività generale. Ma, in quanto veri e propri sistemi di pensiero, queste due teorie suggeriscono due distinte visioni del mondo, non conciliabili nel quadro di una descrizione unificata. Se dunque la fisica attuale si rivela inadeguata, occorre costruirne una nuova, percorrendo fino in fondo la via geometrica. Supersimmetria, stringhe e superstringhe, gravità e cosmologia quantistiche, geometria non commutativa: nuove audaci ipotesi al servizio di nuove teorie che rinnovano la nostra concezione dello spazio, del tempo, della materia e dell'Universo, e che trovano nel volume una presentazione chiara e accessibile anche a un pubblico di non specialisti.

  19. Tempo é dinheiro’: Usabilidade é Produtividade

    Directory of Open Access Journals (Sweden)

    Antonio Mendes Silva Filho

    2012-09-01

    Full Text Available Benjamin Franklin foi um intelectual de sua época (1706-1790 e uma frase marcante dele que ultrapassa fronteiras é “Remember that time is money”. Lembre-se do que já disse: Tempo é o bem mais precioso que todo ser humano pode possuir, inclusive para aqueles que pensam nada ter. Tempo impacta a produtividade, tema esse explorado neste artigo que se concentra em discutir como a facilidade em realizar atividades utilizando tablets, smartphones, computadores e outros artefatos podem impactar a produtividade. Essa ‘facilidade em realizar atividades’ é denominada de usabilidade e, sesse sentido, este artigo explora como a inspeção por meio da análise e interpretação de dados podem auxiliar nessa tarefa.

  20. Os Usos do Tempo Livre entre Jovens de Classes Populares

    Directory of Open Access Journals (Sweden)

    Manoela Pagotto Martins Nodari

    Full Text Available RESUMO O presente estudo, de caráter quantitativo, pretendeu investigar aspectos relacionados ao tempo livre de jovens de classes populares. Participaram da pesquisa 291 jovens (53,3% meninas, de 15 a 19 anos (M = 16,3; DP = 1,09, estudantes de ensino médio em escolas públicas da Grande Vitória, ES. Os dados foram coletados através de questionário e analisados através do software SPSS. Os resultados apontaram, principalmente, para os diferentes fatores envolvidos nas formas de apropriação do tempo livre entre esses jovens, não relacionados estritamente à renda, mas também a aspectos como gênero, meio em que vivem, estilos de vida e grupos de que participam.

  1. Evaluating a Priori Ozone Profile Information Used in TEMPO (Tropospheric Emissions: Monitoring of Pollution) Tropospheric Ozone Retrievals

    Science.gov (United States)

    Johnson, Matthew Stephen

    2017-01-01

    A primary objective for TOLNet is the evaluation and validation of space-based tropospheric O3 retrievals from future systems such as the Tropospheric Emissions: Monitoring of Pollution (TEMPO) satellite. This study is designed to evaluate the tropopause-based O3 climatology (TB-Clim) dataset which will be used as the a priori profile information in TEMPO O3 retrievals. This study also evaluates model simulated O3 profiles, which could potentially serve as a priori O3 profile information in TEMPO retrievals, from near-real-time (NRT) data assimilation model products (NASA Global Modeling and Assimilation Office (GMAO) Goddard Earth Observing System (GEOS-5) Forward Processing (FP) and Modern-Era Retrospective analysis for Research and Applications version 2 (MERRA2)) and full chemical transport model (CTM), GEOS-Chem, simulations. The TB-Clim dataset and model products are evaluated with surface (0-2 km) and tropospheric (0-10 km) TOLNet observations to demonstrate the accuracy of the suggested a priori dataset and information which could potentially be used in TEMPO O3 algorithms. This study also presents the impact of individual a priori profile sources on the accuracy of theoretical TEMPO O3 retrievals in the troposphere and at the surface. Preliminary results indicate that while the TB-Clim climatological dataset can replicate seasonally-averaged tropospheric O3 profiles observed by TOLNet, model-simulated profiles from a full CTM (GEOS-Chem is used as a proxy for CTM O3 predictions) resulted in more accurate tropospheric and surface-level O3 retrievals from TEMPO when compared to hourly (diurnal cycle evaluation) and daily-averaged (daily variability evaluation) TOLNet observations. Furthermore, it was determined that when large daily-averaged surface O3 mixing ratios are observed (65 ppb), which are important for air quality purposes, TEMPO retrieval values at the surface display higher correlations and less bias when applying CTM a priori profile information

  2. Tempo and walking speed with music in the urban context

    Directory of Open Access Journals (Sweden)

    Marek eFranek

    2014-12-01

    Full Text Available The study explored the effect of music on the temporal aspects of walking behavior in a real outdoor urban setting. First, spontaneous synchronization between the beat of the music and step tempo was explored. The effect of motivational and non-motivational music (Karageorghis et al. 1999 on the walking speed was also studied. Finally, we investigated whether music can mask the effects of visual aspects of the walking route environment, which involve fluctuation of walking speed as a response to particular environmental settings. In two experiments, we asked participants to walk around an urban route through various environments in the downtown area of Hradec Králové. In Experiment 1, the participants listened to a musical track consisting of world pop music with a clear beat. In Experiment 2, participants were walking either with motivational music, which had a fast tempo and a strong rhythm, or with non-motivational music, which was slower, nice music, but with no strong implication to movement. Musical beat, as well as the sonic character of the music listened to while walking, influenced walking speed but did not lead to precise synchronization. It was found that many subjects did not spontaneously synchronize with the beat of the music at all, and some subjects synchronized only part of the time. The fast, energetic music increases the speed of the walking tempo, while slower, relaxing music makes the walking tempo slower. Further, it was found that listening to music with headphones while walking can mask the influence of the surrounding environment to some extent. Both motivational music and non-motivational music had a larger effect than the music from Experiment 1. Individual differences in responses to the music listened to while walking that were linked to extraversion and neuroticism were also observed. The findings described here could be useful in rhythmic stimulation for enhancing or recovering the features of movement

  3. Tempo and walking speed with music in the urban context.

    Science.gov (United States)

    Franěk, Marek; van Noorden, Leon; Režný, Lukáš

    2014-01-01

    The study explored the effect of music on the temporal aspects of walking behavior in a real outdoor urban setting. First, spontaneous synchronization between the beat of the music and step tempo was explored. The effect of motivational and non-motivational music (Karageorghis et al., 1999) on the walking speed was also studied. Finally, we investigated whether music can mask the effects of visual aspects of the walking route environment, which involve fluctuation of walking speed as a response to particular environmental settings. In two experiments, we asked participants to walk around an urban route that was 1.8 km in length through various environments in the downtown area of Hradec Králové. In Experiment 1, the participants listened to a musical track consisting of world pop music with a clear beat. In Experiment 2, participants were walking either with motivational music, which had a fast tempo and a strong rhythm, or with non-motivational music, which was slower, nice music, but with no strong implication to movement. Musical beat, as well as the sonic character of the music listened to while walking, influenced walking speed but did not lead to precise synchronization. It was found that many subjects did not spontaneously synchronize with the beat of the music at all, and some subjects synchronized only part of the time. The fast, energetic music increases the speed of the walking tempo, while slower, relaxing music makes the walking tempo slower. Further, it was found that listening to music with headphones while walking can mask the influence of the surrounding environment to some extent. Both motivational music and non-motivational music had a larger effect than the world pop music from Experiment 1. Individual differences in responses to the music listened to while walking that were linked to extraversion and neuroticism were also observed. The findings described here could be useful in rhythmic stimulation for enhancing or recovering the features of

  4. Music during exercise: does tempo influence psychophysical responses?

    OpenAIRE

    Elliott, David

    2007-01-01

    This study examined whether music of different tempi would influence the psychophysical responses of exercise participants performing a sub-maximal cycle task. Specifically, the investigation assessed the effect of musical tempo upon aerobic work rate and whether dissociation, and/or, arousal could be implicated in any physical responses. Eighteen student participants (10 females, 8 males) were required to partake in four experimental conditions: no music, ‘slow’ music, ‘moderately fast’ musi...

  5. Tempo and walking speed with music in the urban context

    Science.gov (United States)

    Franěk, Marek; van Noorden, Leon; Režný, Lukáš

    2014-01-01

    The study explored the effect of music on the temporal aspects of walking behavior in a real outdoor urban setting. First, spontaneous synchronization between the beat of the music and step tempo was explored. The effect of motivational and non-motivational music (Karageorghis et al., 1999) on the walking speed was also studied. Finally, we investigated whether music can mask the effects of visual aspects of the walking route environment, which involve fluctuation of walking speed as a response to particular environmental settings. In two experiments, we asked participants to walk around an urban route that was 1.8 km in length through various environments in the downtown area of Hradec Králové. In Experiment 1, the participants listened to a musical track consisting of world pop music with a clear beat. In Experiment 2, participants were walking either with motivational music, which had a fast tempo and a strong rhythm, or with non-motivational music, which was slower, nice music, but with no strong implication to movement. Musical beat, as well as the sonic character of the music listened to while walking, influenced walking speed but did not lead to precise synchronization. It was found that many subjects did not spontaneously synchronize with the beat of the music at all, and some subjects synchronized only part of the time. The fast, energetic music increases the speed of the walking tempo, while slower, relaxing music makes the walking tempo slower. Further, it was found that listening to music with headphones while walking can mask the influence of the surrounding environment to some extent. Both motivational music and non-motivational music had a larger effect than the world pop music from Experiment 1. Individual differences in responses to the music listened to while walking that were linked to extraversion and neuroticism were also observed. The findings described here could be useful in rhythmic stimulation for enhancing or recovering the features of

  6. A ACELERACAO CONTEMPORÁNEA: TEMPO MUNDO E ESPACO MUNDO.

    Directory of Open Access Journals (Sweden)

    Milton Santos

    1993-12-01

    Full Text Available celeracoes sao momentos culminantes na Historia, como se abrigassem forcas concentradas, explodindo para criarem o novo. A marcha do tempo, de que faiava Michelst no prefacio á sua Historia do Sécuío 19, é marcada por essas grandes perturbacoes aparentemente sem sentido. Daí, a cada época, rnalgrado a certeza de que se atingiu um paramar definitivo, as reacoes de admiracao ou de medo diante do inusitado e a dificuldade para entender os novos esquemas e para encontrar um novo sistema de conceitos que expressem a nova ordem em gestaca~o. A acelerac'ao contemporánea nao escapa a esse fado. Ela é tanto mais susceptivel de sar um objeto da construcao de metáforas porque, para repetir Jacques Attali, vivemos plenamente a época dos signos, após havermos vivido o tempo dos deuses, o tempe do corpo e o tempo das máquinas. Os símbolos baraiham, porque tomam o lugar das coisas verdadeiras.

  7. Tango or Waltz?: Putting Ballroom Dance Style into Tempo Detection

    Directory of Open Access Journals (Sweden)

    Gerhard Rigoll

    2008-05-01

    Full Text Available Rhythmic information plays an important role in Music Information Retrieval. Example applications include automatically annotating large databases by genre, meter, ballroom dance style or tempo, fully automated D.J.-ing, and audio segmentation for further retrieval tasks such as automatic chord labeling. In this article, we therefore provide an introductory overview over basic and current principles of tempo detection. Subsequently, we show how to improve on these by inclusion of ballroom dance style recognition. We introduce a feature set of 82 rhythmic features for rhythm analysis on real audio. With this set, data-driven identification of the meter and ballroom dance style, employing support vector machines, is carried out in a first step. Next, this information is used to more robustly detect tempo. We evaluate the suggested method on a large public database containing 1.8 k titles of standard and Latin ballroom dance music. Following extensive test runs, a clear boost in performance can be reported.

  8. Tango or Waltz?: Putting Ballroom Dance Style into Tempo Detection

    Directory of Open Access Journals (Sweden)

    Schuller Björn

    2008-01-01

    Full Text Available Rhythmic information plays an important role in Music Information Retrieval. Example applications include automatically annotating large databases by genre, meter, ballroom dance style or tempo, fully automated D.J.-ing, and audio segmentation for further retrieval tasks such as automatic chord labeling. In this article, we therefore provide an introductory overview over basic and current principles of tempo detection. Subsequently, we show how to improve on these by inclusion of ballroom dance style recognition. We introduce a feature set of 82 rhythmic features for rhythm analysis on real audio. With this set, data-driven identification of the meter and ballroom dance style, employing support vector machines, is carried out in a first step. Next, this information is used to more robustly detect tempo. We evaluate the suggested method on a large public database containing 1.8 k titles of standard and Latin ballroom dance music. Following extensive test runs, a clear boost in performance can be reported.

  9. GIS and Remote Sensing Based Assessment of Climate Change ...

    African Journals Online (AJOL)

    The effects of climate change are severe in developing countries like Ethiopia where agriculture is the dominant economy. The Remote Sensing and GIS based analysis of climate change impact is crucial to help Ethiopia benefit the most from the technology. This study aims at assessing changes and variations in climatic ...

  10. Lessons on consortium-based research in climate change and ...

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

    2014-04-03

    Apr 3, 2014 ... Collaborative research efforts are emerging as a way to address complex development challenges such as adapting to climate change. Lessons on consortium-based research in climate change and development is the first in a series of working papers based on work funded by the Collaborative ...

  11. Problem-based learning as a facilitator of conceptual change

    NARCIS (Netherlands)

    Loyens, Sofie M M; Jones, Suzanne H.; Mikkers, Jeroen; van Gog, Tamara

    2015-01-01

    We investigated whether problem-based learning (PBL) can foster conceptual change. Students were randomly assigned to a PBL, lecture-based, or self-study group, all receiving instruction about the topic of Newtonian laws. Conceptual change was measured from pre- to immediate post-test (directly

  12. Facilitating Change to a Problem-based Model

    DEFF Research Database (Denmark)

    Kolmos, Anette

    2002-01-01

    The paper presents the barriers which arise during the change process from a traditional educational system to a problem-based educational model.......The paper presents the barriers which arise during the change process from a traditional educational system to a problem-based educational model....

  13. Tempos históricos, tempos físicos, tempos epidemiológicos: prováveis contribuições de Fernand Braudel e Ilya Prigogine ao pensamento epidemiológico Historical times, physical times, epidemiological times: probable contributions of Fernand Braudel and Ilya Prigogine to epidemiological thinking

    Directory of Open Access Journals (Sweden)

    Gil Sevalho

    1997-01-01

    Full Text Available O texto é uma abordagem acerca do tempo enquanto categoria científica para a epidemiologia. A partir do aforismo tempo-lugar-pessoa, o tempo é apontado como elemento pouco pensado pela epidemiologia, embora esteja presente em vários dos seus conceitos. No entanto, o tema tem sido objeto de reflexão importante na movimentação recente de várias disciplinas, tais como a história, a geografia, a biologia e a física, e deve por isto representar para a epidemiologia um ponto de vista interessante, tanto no que concerne ao diálogo interdisciplinar quanto ao estabelecimento de um olhar crítico voltado para a própria disciplina. Com o objetivo de argumentar a respeito destes aspectos, apresenta-se o tempo histórico de Fernand Braudel e o tempo físico de Ilya Prigogine, construções teóricas que serão comparadas com um provável tempo epidemiológico. Ao final, usando a questão das infecções emergentes como exemplo, faz-se considerações sobre a aparente inadequação epistemológica do tempo epidemiológico para reconhecer e lidar com os aspectos sociais e históricos envolvidos na complexidade do adoecer humano coletivo.The text is an approach on time as a scientific category in epidemiology. Considering the aphorism time-place-person, time is pointed out as an element with little theoretical concern, despite its presence in main epidemiological concepts. While a topic connected to important changes in other disciplines, such as history, geography, biology and physics, time represents an interesting point of view to the interdisciplinary dialogue and its relevance for a critical knowledge in epidemiology. To argue about this idea, the historical and physical time constructions of Fernand Braudel and Ilya Prigogine are presented. These time theoretical constructions are compared with a probable epidemiological time. Finally, using the emerging infectious diseases as an example, some considerations are made about an apparent

  14. Music genre preference and tempo alter alpha and beta waves in human non-musicians

    Directory of Open Access Journals (Sweden)

    Hunter Gentry

    2013-10-01

    Full Text Available This study examined the effects of music genre and tempo on brain activation patterns in 10 nonmusicians.Two genres (rock and jazz and three tempos (slowed, medium/normal, andquickened were examined using EEG recording and analyzed through Fast Fourier Transform(FFT analysis. When participants listened to their preferred genre, an increase in alpha waveamplitude was observed. Alpha waves were not significantly affected by tempo. Beta waveamplitude increased significantly as the tempo increased. Genre had no effect on beta waves. Thefindings of this study indicate that genre preference and artificially modified tempo do affectalpha and beta wave activation in non-musicians listening to preselected songs.

  15. From TEMPO+ to OPUS 2: what can music tests tell us about processor upgrades?

    Science.gov (United States)

    van Besouw, R M; Grasmeder, M L

    2011-08-01

    Tests for quantifying the music perception abilities of cochlear implant users are currently being developed and trialled at the South of England Cochlear Implant Centre. In addition to measures of speech perception, tests of rhythm, and pitch have been administered to MED-EL C40+ implant users before and after upgrading from the TEMPO+ processor with continuous interleaved sampling strategy to the OPUS 2 processor with fine structure processing strategy, with the aims of comparing device performance and evaluating the potential of music perception tests for informing processor upgrades and tuning. Eight experienced adult C40+ implant recipients performed tests of rhythm and pitch discrimination using the TEMPO+ processor and, after a minimum of 6 weeks acclimatization, using the OPUS 2 processor. Stimuli included piano and sine tones in two note ranges for the pitch tasks, and drum beats for the rhythm task. Rhythm, pitch, and speech perception scores were comparable for both processors. An effect of note range was observed (z = -2.52, p = 0.008 (two-tailed), r = -0.63), which indicated that the higher range of notes used for the pitch tasks was easier for participants than the lower range. Measures of pitch discrimination in different frequency ranges further informed changes made to one participant's map, resulting in improved pitch discrimination and speech perception scores. The outcomes of this study demonstrate that music perception tests can provide important additional measures for tuning cochlear implant parameters and assessing the impact of changes to device type and processing strategy.

  16. Tempo morto e outros tempos: the Italian translation of Gilberto Freyre’s personal diary from the Brazilian Portuguese

    Directory of Open Access Journals (Sweden)

    Nicoletta Cherobin

    2017-07-01

    Full Text Available In his personal diary Tempo morto e outros tempos: trechos de um diário de adolescência e primeira mocidade (1975 the Brazilian writer Gilberto Freyre (1900-1980 comments social, political, cultural, religious and intellectual aspects of his country. This article will analyze the task complexity and the challenges faced during the process of translation like critical and theoretical act involving not simply the linguistics aspects. At the end, the emphasis will be put on the analysis of two macro aspects: syntax and punctuation, lexicon and note, where the translator appears with strategies and comment. The first one, as representative of Freyre’s style and the second one as representative to overcome the difficulties associated with the transposition of themes and words so distant from the Italian context.

  17. The effect of tolvaptan on autosomal dominant polycystic kidney disease patients: a subgroup analysis of the Japanese patient subset from TEMPO 3:4 trial.

    Science.gov (United States)

    Muto, Satoru; Kawano, Haruna; Higashihara, Eiji; Narita, Ichiei; Ubara, Yoshifumi; Matsuzaki, Takayuki; Ouyang, John; Torres, Vicente E; Horie, Shigeo

    2015-10-01

    Japan is the first country in the world to approve tolvaptan for the treatment of autosomal dominant polycystic kidney disease (ADPKD), which was based on the results of Tolvaptan Efficacy and Safety in Management of Autosomal Dominant Polycystic Kidney Disease and Its Outcomes (TEMPO) 3:4 trial. To evaluate the safety and efficacy of tolvaptan, we performed a subgroup analysis in the participating Japanese ADPKD patient population. The primary outcome was the annual rate of percentage change in the total kidney volume (TKV). The secondary endpoint was the rate of kidney function change. The tolvaptan and placebo groups included 118 and 59 patients, respectively. The annual rate of percentage changes in TKV were 1.3 % [95 % confidence interval (CI) 0.4-2.1] in the tolvaptan group, and 5.0 % (95 % CI 3.9-6.2) in the placebo group (P tolvaptan group and -5.05 mL in the placebo group for a treatment effect of +1.22 mL/min/1.73 m(2) (95 % CI 0.41-2.02: P = 0.003). Hepatic function abnormal as a serious adverse event was observed in 3 patients (2.5 %) in the tolvaptan group. Administration of tolvaptan in the Japanese sub-population reduced the annual rate of TKV growth and slowed the rate of kidney function decline over 36 months compared to patients on placebo, thus providing a novel and effective therapy for the treatment of ADPKD. (TEMPO 3:4 ClinicalTrials.gov number, NCT00428948).

  18. Vivenciando a inexorabilidade do tempo e as suas mudanças com perdas e possibilidades: a mulher na fase do climatério Vivenciando la inexorabilidad del tiempo y sus cambios con pérdidas y posibilidades: la mujer en la fase del climaterio Living the inexorability of time and its changes with losses and possibilities: the woman in climacterium

    Directory of Open Access Journals (Sweden)

    Josefa Vieira de Lima

    2001-12-01

    Full Text Available Este estudo versa sobre a experiência da mulher na fase do climatério. O Interacionismo Simbólico e a Teoria Fundamentada nos Dados foram as abordagens teóricas e metodológicas que nortearam o estudo tendo em vista os seguintes objetivos: compreender como a experiência do climatério é definida pela mulher; quais os processos psicossociais de interação vividos pela mulher e desenvolver um modelo teórico representativo da vivência da mulher na fase do climatério. As estratégias utilizadas para a obtenção dos dados foram a observação e a entrevista. Tomamos como sujeito da investigação a mulher na faixa etária de 45 a 60 anos, perfazendo um total de 30 mulheres. Através deste estudo foi possível descobrir que a experiência do climatério pode ser constituída por dois fenômenos: REJEITANDO AS MUDANÇAS, no qual o climatério é caracterizado pela mulher como um momento de perda e BUSCANDO SUPERAR AS MUDANÇAS, que representa um momento na construção de novos conceitos, com possibilidades de renovação. A partir desses fenômenos identificamos a categoria central: VIVENCIANDO A INEXORABILIDADE DO TEMPO E SUAS MUDANÇAS COM PERDAS E POSSIBILIDADES, que é fundamental para o modelo teórico representativo da experiência da mulher na fase do climatério.Este estudio trata de la experiencia de la mujer en el período del climaterio. El Interaccionismo Simbólico y la Teoria Fundamentada en los Datos fueron los abordajes teórico y metodológico que nortearon el estudio teniendo en cuenta el alcance de los siguientes objetivos: comprender como la experiencia del climaterio es definida por la mujer; cuales son los procesos psicosociales de interacción vividos por la mujer y desenvolver un modelo teórico representativo dela vivencia de la mujer en la fase del climaterio. Las estrategias utilizadas para la obtención de los datos fueron la observación y la entrevista. Tomé como sujetos de la investigación la mujer en la

  19. Survey-Guided Development: Data Based Organizational Change

    Science.gov (United States)

    1975-06-01

    AD-AO12 868 SURVEY-GUIDED DEVELOPMENT: DATA BASED ORGANIZATIONAL CHANGE David G. Bowers, et al Michigan University Prepared for: Office of Naval...SERVICE US bsq•.ow of c....,. 3e1q"gfi, VA. 22161 SURVEY -GUIDED DEVELOPMENT: DATA BASED ORGANIZATIONAL CHANGE I David G. Bowers Jertne L. Franklin Center...e0GVT ACC 91"" No ! I. IMCIP 191615 CATALOG N OU N BE Survey-Guided Developwmnt: Data Based Technical Report Organizational Change ______________ 6

  20. Mining Customer Change Model Based on Swarm Intelligence

    Science.gov (United States)

    Jin, Peng; Zhu, Yunlong

    Understanding and adapting to changes of customer behavior is an important aspect of surviving in a continuously changing market environment for a modern company. The concept of customer change model mining is introduced and its process is analyzed in this paper. A customer change model mining method based on swarm intelligence is presented, and the strategies of pheromone updating and items searching are given. Finally, an examination on two customer datasets of a telecom company illuminates that this method can achieve customer change model efficiently.

  1. When music tempo affects the temporal congruence between physical practice and motor imagery.

    Science.gov (United States)

    Debarnot, Ursula; Guillot, Aymeric

    2014-06-01

    When people listen to music, they hear beat and a metrical structure in the rhythm; these perceived patterns enable coordination with the music. A clear correspondence between the tempo of actual movement (e.g., walking) and that of music has been demonstrated, but whether similar coordination occurs during motor imagery is unknown. Twenty participants walked naturally for 8m, either physically or mentally, while listening to slow and fast music, or not listening to anything at all (control condition). Executed and imagined walking times were recorded to assess the temporal congruence between physical practice (PP) and motor imagery (MI). Results showed a difference when comparing slow and fast time conditions, but each of these durations did not differ from soundless condition times, hence showing that body movement may not necessarily change in order to synchronize with music. However, the main finding revealed that the ability to achieve temporal congruence between PP and MI times was altered when listening to either slow or fast music. These data suggest that when physical movement is modulated with respect to the musical tempo, the MI efficacy of the corresponding movement may be affected by the rhythm of the music. Practical applications in sport are discussed as athletes frequently listen to music before competing while they mentally practice their movements to be performed. Copyright © 2014 Elsevier B.V. All rights reserved.

  2. Intrasensory Redundancy Facilitates Infant Detection of Tempo: Extending Predictions of the Intersensory Redundancy Hypothesis.

    Science.gov (United States)

    Bahrick, Lorraine E; Lickliter, Robert; Castellanos, Irina; Todd, James Torrence

    2015-01-01

    Research has demonstrated that intersensory redundancy (stimulation synchronized across multiple senses) is highly salient and facilitates processing of amodal properties in multimodal events, bootstrapping early perceptual development. The present study is the first to extend this central principle of the intersensory redundancy hypothesis (IRH) to certain types of intrasensory redundancy (stimulation synchronized within a single sense). Infants were habituated to videos of a toy hammer tapping silently (unimodal control), depicting intersensory redundancy (synchronized with a soundtrack) or intrasensory redundancy (synchronized with another visual event; light flashing or bat tapping). In Experiment 1, 2-month-olds showed both intersensory and intrasensory facilitation (with respect to the unimodal control) for detecting a change in tempo. However, intrasensory facilitation was found when the hammer was synchronized with the light flashing (different motion) but not with the bat tapping (same motion). Experiment 2 tested 3-month-olds using a somewhat easier tempo contrast. Results supported a similarity hypothesis: intrasensory redundancy between two dissimilar events was more effective than that between two similar events for promoting processing of amodal properties. These findings extend the IRH and indicate that in addition to intersensory redundancy, intrasensory redundancy between two synchronized dissimilar visual events is also effective in promoting perceptual processing of amodal event properties.

  3. Tempo and beat analysis of acoustic musical signals.

    Science.gov (United States)

    Scheirer, E D

    1998-01-01

    A method is presented for using a small number of bandpass filters and banks of parallel comb filters to analyze the tempo of, and extract the beat from, musical signals of arbitrary polyphonic complexity and containing arbitrary timbres. This analysis is performed causally, and can be used predictively to guess when beats will occur in the future. Results in a short validation experiment demonstrate that the performance of the algorithm is similar to the performance of human listeners in a variety of musical situations. Aspects of the algorithm are discussed in relation to previous high-level cognitive models of beat tracking.

  4. Relationship between exercise heart rate and music tempo preference

    OpenAIRE

    Karageorghis, CI; Jones, L; Low, DC

    2006-01-01

    The present study examined the predicted positive and linear relationship (Iwanaga, 1995a,1995b) between exercise heart rate and music tempo preference. Initially, 128 undergraduates (M 3 age = 20.0 years, SD = 0.9 years) were surveyed to establish their three favorite music artists of all time. A separate experimental group of 29 undergraduates (M age = 20.3 years, SD = 1.2 years) selected the music of a single artist from a choice of the three highest-rated artists from the earlier survey. ...

  5. Consolidity: Stack-based systems change pathway theory elaborated

    OpenAIRE

    Dorrah, Hassen Taher

    2014-01-01

    This paper presents an elaborated analysis for investigating the stack-based layering processes during the systems change pathway. The system change pathway is defined as the path resulting from the combinations of all successive changes induced on the system when subjected to varying environments, activities, events, or any excessive internal or external influences and happenings “on and above” its normal stands, situations or set-points during its course of life. The analysis is essentially...

  6. Agent-based modeling of urban land-use change

    Science.gov (United States)

    Li, Xinyan; Li, Deren

    2005-10-01

    ABM (Agent-Based Modeling) is a newly developed method of computer simulation. It has characteristics such as active, dynamic, and operational. Urban land-use change has been a focus problem all over the world, especially for the developing countries. We try to use ABM to model the urban land-use changes. By studying the mechanism of urban land use evolvement, we put forwards the thinking of modeling. And an urban land-use change model is built primarily based on the RePast software and GIS spatial database.

  7. CUBISMO: A ARTE AFRICANA E O ESPAÇO-TEMPO

    Directory of Open Access Journals (Sweden)

    Neusa Cavalcante

    2017-08-01

    Full Text Available Resumo Este artigo sugere uma reflexão sobre as origens do Cubismo que, além de considerar o importante legado de Paul Cézanne, possa trazer à luz algumas conexões desse movimento de vanguarda com as publicações A Origem das Espécies, de Darwin, e A Teoria da Relatividade, de Einstein, ou, mais especificamente, sua relação tanto com a arte africana como com o fenômeno espaço-tempo. Trata-se de parte de uma pesquisa mais ampla sobre fatos e feitos[i] históricos determinantes da construção do ideário moderno e também da formulação da arte abstrata, em geral, e do Cubismo, em particular. Palavras-chave: Cubismo, arte abstrata, arte africana, espaço-tempo 1A pesquisa pretende estabelecer quais as contribuições, para o surgimento da arte abstrata, da Revolução Industrial; do advento e popularização da fotografia; da invenção do avião; da Primeira Guerra; da Revolução Bolchevique; d’O Capital, de Karl Marx; d’A Interpretação dos Sonhos, de Sigmund Freud; e das teorias sobre a percepção humana de cores e formas.

  8. Tempo and mode in evolution of transcriptional regulation.

    Directory of Open Access Journals (Sweden)

    Kacy L Gordon

    2012-01-01

    Full Text Available Perennial questions of evolutionary biology can be applied to gene regulatory systems using the abundance of experimental data addressing gene regulation in a comparative context. What is the tempo (frequency, rate and mode (way, mechanism of transcriptional regulatory evolution? Here we synthesize the results of 230 experiments performed on insects and nematodes in which regulatory DNA from one species was used to drive gene expression in another species. General principles of regulatory evolution emerge. Gene regulatory evolution is widespread and accumulates with genetic divergence in both insects and nematodes. Divergence in cis is more common than divergence in trans. Coevolution between cis and trans shows a particular increase over greater evolutionary timespans, especially in sex-specific gene regulation. Despite these generalities, the evolution of gene regulation is gene- and taxon-specific. The congruence of these conclusions with evidence from other types of experiments suggests that general principles are discoverable, and a unified view of the tempo and mode of regulatory evolution may be achievable.

  9. Estratificação social e usos do tempo: um estudo sobre os indivíduos inseridos no mercado de trabalho = Social stratification and time use: studying individuals in the labor market

    Directory of Open Access Journals (Sweden)

    Neubert, Luiz Flávio

    2016-01-01

    Full Text Available A teoria da classe ociosa, de Veblen, vem sendo revista pelos que pretendem compreender a desigualdade social contemporânea e sua relação com o uso do tempo. Atualmente, trabalhadores de alto status despendem longas horas em suas funções e, ao analisar informações sobre uso do tempo da população de uma grande cidade brasileira (Belo Horizonte, MG, encontrou-se a mesma tendência. Ao mesmo tempo, quanto maior o status menor o tempo gasto em atividades de trabalho no fim de semana, e maior o tempo dedicado ao lazer. Enquanto o tempo de trabalho é a base principal sobre a qual se debruçam as desigualdades entre ocupações remuneradas, análises anteriores indicam que as atividades de lazer apresentam altas taxas de participação, independente do período da semana e do status ocupacional. Revisitar a teoria de Veblen permite-nos, então, entender melhor como a estratificação da sociedade se relaciona ao uso do tempo diário

  10. Astragalosidic Acid: A New Water-Soluble Derivative of Astragaloside IV Prepared Using Remarkably Simple TEMPO-Mediated Oxidation.

    Science.gov (United States)

    Qing, Lin-Sen; Peng, Shu-Lin; Liang, Jian; Ding, Li-Sheng

    2017-07-31

    There is an urgent need for a water-soluble derivative of astragaloside IV for drug R&D. In the present study, a remarkably simple method for the preparation of such a water-soluble derivative of astragaloside IV has been developed. This protocol involves oxidative 2,2,6,6-tetramethylpiperidine-1-oxyl free radical (TEMPO)-mediated transformation of astragaloside IV to its carboxylic acid derivative, which is a new compound named astragalosidic acid. The structure of astragalosidic acid was elucidated by means of spectroscopic analysis. Its cardioprotective activity was investigated using an in vitro model of cardiomyocyte damage induced by hypoxia/reoxygenation in H9c2 cells. The oxidative TEMPO-mediated transformation proposed in the present study could be applied to other natural saponins, offering an effective and convenient way to develop a new compound with greatly improved structure-based druggability.

  11. Arresting Strategy Based on Dynamic Criminal Networks Changing over Time

    Directory of Open Access Journals (Sweden)

    Junqing Yuan

    2013-01-01

    Full Text Available We investigate a sequence of dynamic criminal networks on a time series based on the dynamic network analysis (DNA. According to the change of networks’ structure, networks’ variation trend is analyzed to forecast its future structure. Finally, an optimal arresting time and priority list are designed based on our analysis. Better results can be expected than that based on social network analysis (SNA.

  12. Consolidity: Stack-based systems change pathway theory elaborated

    Directory of Open Access Journals (Sweden)

    Hassen Taher Dorrah

    2014-06-01

    Full Text Available This paper presents an elaborated analysis for investigating the stack-based layering processes during the systems change pathway. The system change pathway is defined as the path resulting from the combinations of all successive changes induced on the system when subjected to varying environments, activities, events, or any excessive internal or external influences and happenings “on and above” its normal stands, situations or set-points during its course of life. The analysis is essentially based on the important overall system paradigm of “Time driven-event driven-parameters change”. Based on this paradigm, it is considered that any affected activity, event or varying environment is intelligently self-recorded inside the system through an incremental consolidity-scaled change in system parameters of the stack-based layering types. Various joint stack-based mathematical and graphical approaches supported by representable case studies are suggested for the identification, extraction, and processing of various stack-based systems changes layering of different classifications and categorizations. Moreover, some selected real life illustrative applications are provided to demonstrate the (infinite stack-based identification and recognition of the change pathway process in the areas of geology, archeology, life sciences, ecology, environmental science, engineering, materials, medicine, biology, sociology, humanities, and other important fields. These case studies and selected applications revealed that there are general similarities of the stack-based layering structures and formations among all the various research fields. Such general similarities clearly demonstrate the global concept of the “fractals-general stacking behavior” of real life systems during their change pathways. Therefore, it is recommended that concentrated efforts should be expedited toward building generic modular stack-based systems or blocks for the mathematical

  13. REGION BASED FOREST CHANGE DETECTION FROM CARTOSAT-1 STEREO IMAGERY

    Directory of Open Access Journals (Sweden)

    J. Tian

    2012-09-01

    Full Text Available Tree height is a fundamental parameter for describing the forest situation and changes. The latest development of automatic Digital Surface Model (DSM generation techniques allows new approaches of forest change detection from satellite stereo imagery. This paper shows how DSMs can support the change detection in forest area. A novel region based forest change detection method is proposed using single-channel CARTOSAT-1 stereo imagery. In the first step, DSMs from two dates are generated based on automatic matching technology. After co-registration and normalising by using LiDAR data, the mean-shift segmentation is applied to the original pan images, and the images of both dates are classified to forest and non-forest areas by analysing their histograms and height differences. In the second step, a rough forest change detection map is generated based on the comparison of the two forest map. Then the GLCM texture from the nDSM and the Cartosat-1 images of the resulting regions are analyzed and compared, the real changes are extracted by SVM based classification.

  14. Performing Environmental Change: MED Theatre and the Changing Face of Community-Based Performance Research

    Science.gov (United States)

    Schaefer, Kerrie

    2012-01-01

    This article examines a programme of work produced by community-based theatre company, Manaton and East Dartmoor (MED) Theatre, addressing issues of climate change as they impact on life in rural Devon, UK. After some discussion of MED Theatre's constitution as a community-based company and the group's long-term engagement with the place, history,…

  15. Network-based analysis of software change propagation.

    Science.gov (United States)

    Wang, Rongcun; Huang, Rubing; Qu, Binbin

    2014-01-01

    The object-oriented software systems frequently evolve to meet new change requirements. Understanding the characteristics of changes aids testers and system designers to improve the quality of softwares. Identifying important modules becomes a key issue in the process of evolution. In this context, a novel network-based approach is proposed to comprehensively investigate change distributions and the correlation between centrality measures and the scope of change propagation. First, software dependency networks are constructed at class level. And then, the number of times of cochanges among classes is minded from software repositories. According to the dependency relationships and the number of times of cochanges among classes, the scope of change propagation is calculated. Using Spearman rank correlation analyzes the correlation between centrality measures and the scope of change propagation. Three case studies on java open source software projects Findbugs, Hibernate, and Spring are conducted to research the characteristics of change propagation. Experimental results show that (i) change distribution is very uneven; (ii) PageRank, Degree, and CIRank are significantly correlated to the scope of change propagation. Particularly, CIRank shows higher correlation coefficient, which suggests it can be a more useful indicator for measuring the scope of change propagation of classes in object-oriented software system.

  16. Tempo 1 méthode de français

    CERN Document Server

    Bérard, Evelyne; Lavenne, Christian

    1996-01-01

    Tempo c'est : une méthode qui s'adresse aux adolescents et adultes, vrais débutants, des objectifs précis, définis par l'observation fine d'échanges authentiques, une progression rigoureuse où les acquis sont constamment repris et élargis, l'acquisition de compétences complètes dans un délai très bref (acquisitions par paliers), des techniques de classe dynamiques : apprentissage par tâches, une mise en scène active de la civilisation, de nombreux exercices, une évaluation régulière, une totale adéquation aux épreuves du DELF.

  17. Commitment to Change and Challenges to Implementing Changes After Workplace-Based Assessment Rater Training.

    Science.gov (United States)

    Kogan, Jennifer R; Conforti, Lisa N; Yamazaki, Kenji; Iobst, William; Holmboe, Eric S

    2017-03-01

    Faculty development for clinical faculty who assess trainees is necessary to improve assessment quality and impor tant for competency-based education. Little is known about what faculty plan to do differently after training. This study explored the changes faculty intended to make after workplace-based assessment rater training, their ability to implement change, predictors of change, and barriers encountered. In 2012, 45 outpatient internal medicine faculty preceptors (who supervised residents) from 26 institutions participated in rater training. They completed a commitment to change form listing up to five commitments and ranked (on a 1-5 scale) their motivation for and anticipated difficulty implementing each change. Three months later, participants were interviewed about their ability to implement change and barriers encountered. The authors used logistic regression to examine predictors of change. Of 191 total commitments, the most common commitments focused on what faculty would change about their own teaching (57%) and increasing direct observation (31%). Of the 183 commitments for which follow-up data were available, 39% were fully implemented, 40% were partially implemented, and 20% were not implemented. Lack of time/competing priorities was the most commonly cited barrier. Higher initial motivation (odds ratio [OR] 2.02; 95% confidence interval [CI] 1.14, 3.57) predicted change. As anticipated difficulty increased, implementation became less likely (OR 0.67; 95% CI 0.49, 0.93). While higher baseline motivation predicted change, multiple system-level barriers undermined ability to implement change. Rater-training faculty development programs should address how faculty motivation and organizational barriers interact and influence ability to change.

  18. Kernel based orthogonalization for change detection in hyperspectral images

    DEFF Research Database (Denmark)

    Nielsen, Allan Aasbjerg

    Kernel versions of principal component analysis (PCA) and minimum noise fraction (MNF) analysis are applied to change detection in hyperspectral image (HyMap) data. The kernel versions are based on so-called Q-mode analysis in which the data enter into the analysis via inner products in the Gram...... the kernel function and then performing a linear analysis in that space. An example shows the successful application of (kernel PCA and) kernel MNF analysis to change detection in HyMap data covering a small agricultural area near Lake Waging-Taching, Bavaria, in Southern Germany. In the change detection...

  19. Scoring dynamics across professional team sports: tempo, balance and predictability

    CERN Document Server

    Merritt, Sears

    2013-01-01

    Despite growing interest in quantifying and modeling the scoring dynamics within professional sports games, relative little is known about what patterns or principles, if any, cut across different sports. Using a comprehensive data set of scoring events in nearly a dozen consecutive seasons of college and professional (American) football, professional hockey, and professional basketball, we identify several common patterns in scoring dynamics. Across these sports, scoring tempo---when scoring events occur---closely follows a common Poisson process, with a sport-specific rate. Similarly, scoring balance---how often a team wins an event---follows a common Bernoulli process, with a parameter that effectively varies with the size of the lead. Combining these processes within a generative model of gameplay, we find they both reproduce the observed dynamics in all four sports and accurately predict game outcomes. These results demonstrate common dynamical patterns underlying within-game scoring dynamics across prof...

  20. Os Cadernos do Nosso Tempo e o interesse nacional

    Directory of Open Access Journals (Sweden)

    Cristina Buarque de Hollanda

    2012-01-01

    Full Text Available Cet article a pour but de rechercher et de mettre à jour l'intérêt national des auteurs-éditeurs des Cadernos do Nosso Tempo édités par l'Instituto Brasileiro de Economia, Sociologia e Política (IBESP entre décembre 1953 et mars 1956. A partir de la lecture systématique des Cadernos et d'une bibliographie pertinente, l'auteur traite des compréhensions dont il est question sur le bilan de la politique, le développement potentiel de la nation, ses entraves et, finalement, le legs politique de Getúlio Vargas. Pour les intellectuels do l'IBESP, le nationalisme bien compris est le Seul moyen permettant de surmonter l'expérience politique fragmentaire.

  1. O tempo do luto e o discurso do Outro

    OpenAIRE

    Maesso, Márcia Cristina

    2017-01-01

    Resumo: Trata-se de uma leitura pelo método psicanalítico sobre o tempo de trabalho do luto, através do filme Sede de viver, da biografia de Van Gogh escrita por Forrester, e das concepções sobre o luto no campo da psicanálise, formuladas por Lacan e Allouch, visando abordar a travessia do luto como uma experiência que exige um trabalho não determinado exclusivamente pela relação entre o enlutado e o objeto perdido, mas contando com a função dos ritos e com a linguagem para concluir o luto co...

  2. A psicologia social nos tempos de S. Freud

    OpenAIRE

    Mello Neto Gustavo Adolfo Ramos

    2000-01-01

    Trata-se de uma revisão dos textos psicossociais citados por Freud em Psicologia de massas e análise do eu. O objetivo é propor ao leitor algum conhecimento desses textos que já se perdem no tempo. São referidos textos de Wilfred Trotter, William MacDougall, Gustave Le Bon e Gabriel Tarde. Alude-se também a Durkheim, autor não citado por Freud, mas cuja referência permite contrastar uma visão psicologizante do fenômeno social, que é a de Freud e dos autores que ele cita, com um aporte em que ...

  3. A psicologia social nos tempos de S. Freud

    Directory of Open Access Journals (Sweden)

    Gustavo Adolfo Ramos Mello Neto

    Full Text Available Trata-se de uma revisão dos textos psicossociais citados por Freud em Psicologia de massas e análise do eu. O objetivo é propor ao leitor algum conhecimento desses textos que já se perdem no tempo. São referidos textos de Wilfred Trotter, William MacDougall, Gustave Le Bon e Gabriel Tarde. Alude-se também a Durkheim, autor não citado por Freud, mas cuja referência permite contrastar uma visão psicologizante do fenômeno social, que é a de Freud e dos autores que ele cita, com um aporte em que o social é visto como independente do psicológico.

  4. A psicologia social nos tempos de S. Freud

    Directory of Open Access Journals (Sweden)

    Mello Neto Gustavo Adolfo Ramos

    2000-01-01

    Full Text Available Trata-se de uma revisão dos textos psicossociais citados por Freud em Psicologia de massas e análise do eu. O objetivo é propor ao leitor algum conhecimento desses textos que já se perdem no tempo. São referidos textos de Wilfred Trotter, William MacDougall, Gustave Le Bon e Gabriel Tarde. Alude-se também a Durkheim, autor não citado por Freud, mas cuja referência permite contrastar uma visão psicologizante do fenômeno social, que é a de Freud e dos autores que ele cita, com um aporte em que o social é visto como independente do psicológico.

  5. Programação de operações em sistemas com tempo de processamento variável

    Directory of Open Access Journals (Sweden)

    José Manuel Valério de Carvalho

    2002-07-01

    Full Text Available Neste artigo analisa-se um problema de planeamento de operações com tempos de processamento variável. Em particular, este projecto está relacionado com o planeamento de operações de carga de camiões em armazéns automáticos. As operações podem ser vistas como tarefas executadas em paralelo, com tempos de disponibilidade (data de chegada dos camiões e datas de entrega (data de cut off. Os tempos de processamento das tarefas são variáveis e dependem do número de tarefas a serem processadas simultaneamente; para garantir a taxa de expedição nominal de funcionamento do armazém, é necessário impor um número mínimo de tarefas em execução simultânea. Apresenta-se um procedimento baseado em programação dinâmica com os tempos de expedição dos camiões ordenados pela regra EDD. A eficiência do algoritmo é também discutida.In this work a scheduling operation problem with variable processing times is analysed. In particular this project is concerned with the scheduling of the truck load operations in an automatic warehouse. The truck load operations can be assumed as processing tasks in parallel, with ready times (availability of the trucks and due dates (trip cut off time. Processing time is variable and depends upon the number of tasks simultaneously in progress; a minimum number of simultaneous tasks is imposed to guarantee the nominal rate of expedition of the warehouse. A procedure based on Dynamic Programming with truck expedition times ordered by EDD rule is presented. The algorithm efficiency is also discussed.

  6. A school-based intervention to promote dietary change.

    Science.gov (United States)

    Prell, Hillevi C; Berg, M Christina; Jonsson, Lena M; Lissner, Lauren

    2005-06-01

    This study examined the effect of 2 school-based interventions on adolescents' consumption and knowledge of fish with the hypothesis that home economics education would enhance the effect of modifications in the school canteen. The school lunch intervention (SL) focused on changes in the school canteen, and the school lunch + home economics intervention (SL + HE) in addition consisted of changes in the home economics syllabus. Pupils in the 8th grade (n = 228) from 3 schools in Göteborg, Sweden, participated (control, n = 83; SL group, n = 58; SL + HE group, n = 87). A controlled design was used in which behavior and knowledge were assessed before and after the intervention. In contrast to much previous research of this type, measurement of behavior was based primarily on direct observation as opposed to self-reported intakes. Behavior (fish consumption) was measured individually by structured observations in the school canteen 5 times (once a week) when fish was served. Nutritional knowledge was measured by means of 10 items in a questionnaire. To analyze changes in behavior, a nonparametric statistical method assessing systematic change in paired ordered categoric variables was used. At follow-up evaluation, consumption had increased significantly in the SL + HE group, a change that also differed from the control group. In addition, significant positive changes in knowledge were observed in both intervention groups, but not in controls. The results suggest that dietary change was achieved by modifying conditions in the school canteen together with changing the home economics syllabus. This study shows the importance of the school in the promotion of dietary change among adolescents.

  7. The Web-based Module of Changes in Objects

    Science.gov (United States)

    Triayomi, R.

    2017-09-01

    To understand the changes of substances contained in such a kind of substance and substance characteristics then need a deep study of the concept. In this concept is expected to understand the changes of objects such as substance type and substance characteristics. Types of substances and characteristics of substances through physical changes and chemical changes and means of separation consisting of two or more substances. The principle of separation of the mixture is based on differences in physical properties of its constituents, such as substances, particle size, melting point, boiling point, magnetic properties, solubility, and so forth. This study aims to produce a web-based module of changes in objects that are valid, practical, and have effectiveness of student learning outcomes and activities on natural science learning. The experiment was conducted on 30 children in South Sumatera. The case of the development of the learning module of change of the object is influenced by the child’s understanding of the concept. Expected to be adapted by world teachers.

  8. Quantifying signal changes in nano-wire based biosensors

    DEFF Research Database (Denmark)

    De Vico, Luca; Sørensen, Martin Hedegård; Iversen, Lars

    2011-01-01

    In this work, we present a computational methodology for predicting the change in signal (conductance sensitivity) of a nano-BioFET sensor (a sensor based on a biomolecule binding another biomolecule attached to a nano-wire field effect transistor) upon binding its target molecule. The methodolog...

  9. Making Evidence Based Changes on the Labor Ward of Muhima ...

    African Journals Online (AJOL)

    Rwanda Journal Series F: Medicine and Health Sciences Vol. 2 No. 2, 2015. Making Evidence Based Changes on the Labor Ward of Muhima Hospital: Staff Teaching Staff. Jossette Umucyo1, Rondi Anderson1. 1Muhima Hospital, Kigali, Rwanda. Background. In January 2014 it was noted that Muhima hospital was lagging ...

  10. UPDATING NATIONAL TOPOGRAPHIC DATA BASE USING CHANGE DETECTION METHODS

    Directory of Open Access Journals (Sweden)

    E. Keinan

    2016-06-01

    The automatic process is based on high-resolution Digital Surface Model analysis, Multi Spectral (MS classification, MS segmentation, object analysis and shape forming algorithms. This article reviews the results of a novel change detection methodology as a first step for updating NTDB in the Survey of Israel.

  11. Change Project-Based Learning in Teacher Education in Botswana ...

    African Journals Online (AJOL)

    Change Project-Based Learning in Teacher Education in Botswana. ... Southern African Journal of Environmental Education ... Environmental education (EE) and education for sustainable development (ESD) pedagogies are intricate, and to enhance learning, teacher education has to be innovative in teaching approach.

  12. Predicting the similarity between expressive performances of music from measurements of tempo and dynamics

    NARCIS (Netherlands)

    Timmers, R.

    2005-01-01

    Measurements of tempo and dynamics from audio files or MIDI data are frequently, used to get insight into a performer's contribution to music. The measured variations in tempo and dynamics are often represented in different formats by different authors. Few systematic comparisons have been made

  13. Cellulose Nanofibers Prepared Using the TEMPO/Laccase/O2 System.

    Science.gov (United States)

    Jiang, Jie; Ye, Wenbo; Liu, Liang; Wang, Zhiguo; Fan, Yimin; Saito, Tsuguyuki; Isogai, Akira

    2017-01-09

    The 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)/laccase/O2 system was used to prepare cellulose nanofibers from wood cellulose without requiring any chlorine-containing oxidant. Laccase was degraded by oxidized TEMPO (TEMPO+) formed by laccase-mediated oxidation with O2, which competed with the oxidation of wood cellulose. Thus, large amounts of laccase and TEMPO and a long reaction time were needed to introduce ∼0.6 mmol g-1 of C6-carboxylate groups onto wood cellulose. The TEMPO/laccase/O2 system underwent one-way reaction from TEMPO to reduced TEMPO through TEMPO+. When the oxidation was applied again to the oxidized wood cellulose following isolation and purification, the C6-carboxylate groups increased to ∼1.1 mmol g-1, which was sufficient to convert the sample to cellulose nanofibers by sonication in water. However, the higher the carboxylate content of the oxidized celluloses, the lower their degree of polymerization.

  14. Do evidence-based guidelines change clinical practice patterns?

    DEFF Research Database (Denmark)

    Kessel, Line; Erngaard, Ditte; Flesner, Per

    2017-01-01

    In 2013, the Danish Health and Medicines Authorities published a National Clinical Guideline on the treatment of age-related cataracts. The guideline provided evidence-based recommendations on the indication for cataract surgery, cataract surgery in patients with age-related macular degeneration...... medicine. Thus, evidence-based guidelines do change practice patterns unless they are counteracted by the reimbursement system....... likely to prescribe non-steroidal anti-inflammatory eye drops and to not prescribe topical antibiotic eye drops after the guideline was published. Other parameters, most notably the use of toric IOLs and use of postoperative examinations were more guided by reimbursement standards than by evidence-based...

  15. Tempos de infância, tempos de escola: a ordenação do tempo escolar no ensino público paulista (1892-1933 Childhood times, school times: the ordering of school time in the São Paulo State School System (1892-1933

    Directory of Open Access Journals (Sweden)

    Rosa Fátima de Souza

    1999-07-01

    Full Text Available O texto analisa a ordenação do tempo nas escolas primárias paulistas no final do século XIX e início do século XX, período em que se institui e se consolida a arquitetura temporal escolar. Compreende, pois, as primeiras prescrições detalhadas sobre o tempo constantes na reforma republicana da instrução pública de 1892, as regulamentações instituídas no decorrer da Primeira República, até o momento de criação do Código de Educação de São Paulo em 1933, quando se inaugura uma nova fase da instrução pública no estado. O texto busca mostrar como o tempo constitui uma ordem que se experimenta e se aprende na escola. Para a realização deste estudo foram utilizadas fontes documentais, especialmente a legislação e textos oficiais da administração do ensino. As análises incidem sobre dois aspectos: a formulação política do tempo escolar e a organização pedagógica e disciplinar do tempo na escola. Em relação ao primeiro aspecto, mostra como a ordenação do tempo pautou-se pela aspiração de uniformização e controle. Nesse sentido, as autoridades do ensino público procuraram regulamentar a obrigatoriedade do ensino, a freqüência, a duração do curso primário e a jornada escolar. Em relação à organização pedagógica e disciplinar do tempo, põe em destaque a ordenação minuciosa do emprego do tempo compreendendo a racionalização curricular - a seleção e distribuição do conhecimento por séries, aulas, lições, e a definição dos horários.This text analyzes the ordering of time in primary state schools of the State of São Paulo at the end of the 19th century and beginning of the 20th century, a period in which the school time architecture is instated and consolidated. The paper thus starts with the first detailed instructions related to time at schools, which are part of the Republican Reform of Public Schooling of 1892. It continues with the regulations elaborated during the First Republic

  16. Segment-based change detection for polarimetric SAR data

    DEFF Research Database (Denmark)

    Skriver, Henning; Nielsen, Allan Aasbjerg; Conradsen, Knut

    2006-01-01

    polarimetric synthetic aperture radar (SAR) backscatter data is the so-called covariance matrix data format. For each pixel this consists of a 3×3 Hermitian, positive definite matrix which follows a complex Wishart distribution. Based on this distribution a test statistic for equality of two such matrices....... This method relies primarily on a robust edge detector, which preferably provides a constant false alarm rate. For single-channel SAR images this is fulfilled by the ratio edge detector, and for polarimetric SAR data, an edge detector based on the above mentioned test statistic fulfils this. Another approach...... criterion is based on the Wishart test statistic for fully polarimetric SAR data. 2. METHODOLOGY In change detection applications, at least two images must be available and used in the change detection process. If these images are segmented independently, the segments in the different images will most...

  17. Twin-peak effect in both cardiac response and tempo of popular music.

    Science.gov (United States)

    Shih, Yi-Sen; Zhang, Wen-Chih; Lee, Yaw-Chern; Lei, Chun-Yang; Tseng, Cheng-Lung; Wang, Hui-Min; Huang, Sheng-Chieh

    2011-01-01

    How the musical tempo affects the performance of heart rate variability (HRV) was studied in this work. By understanding the relationship between the HRV response and the music tempo with decreasing tempo from 140 to 70 beats per minute (bpm) periodically in six successive weeks. There were two groups in the experiment, one was listening drum loop music 3 minutes in the middle of experiment and the other was just rest for 20 minutes. After the processed the information from the objects, the distribution of difference of HRV response between before and after listening various tempo drum loop was similar to the distribution of modern popular music in tempo. Both distributions have the twin peaks about 70-85 and 110-125 bpm.

  18. Region-Based Building Rooftop Extraction and Change Detection

    Science.gov (United States)

    Tian, J.; Metzlaff, L.; d'Angelo, P.; Reinartz, P.

    2017-09-01

    Automatic extraction of building changes is important for many applications like disaster monitoring and city planning. Although a lot of research work is available based on 2D as well as 3D data, an improvement in accuracy and efficiency is still needed. The introducing of digital surface models (DSMs) to building change detection has strongly improved the resulting accuracy. In this paper, a post-classification approach is proposed for building change detection using satellite stereo imagery. Firstly, DSMs are generated from satellite stereo imagery and further refined by using a segmentation result obtained from the Sobel gradients of the panchromatic image. Besides the refined DSMs, the panchromatic image and the pansharpened multispectral image are used as input features for mean-shift segmentation. The DSM is used to calculate the nDSM, out of which the initial building candidate regions are extracted. The candidate mask is further refined by morphological filtering and by excluding shadow regions. Following this, all segments that overlap with a building candidate region are determined. A building oriented segments merging procedure is introduced to generate a final building rooftop mask. As the last step, object based change detection is performed by directly comparing the building rooftops extracted from the pre- and after-event imagery and by fusing the change indicators with the roof-top region map. A quantitative and qualitative assessment of the proposed approach is provided by using WorldView-2 satellite data from Istanbul, Turkey.

  19. REGION-BASED BUILDING ROOFTOP EXTRACTION AND CHANGE DETECTION

    Directory of Open Access Journals (Sweden)

    J. Tian

    2017-09-01

    Full Text Available Automatic extraction of building changes is important for many applications like disaster monitoring and city planning. Although a lot of research work is available based on 2D as well as 3D data, an improvement in accuracy and efficiency is still needed. The introducing of digital surface models (DSMs to building change detection has strongly improved the resulting accuracy. In this paper, a post-classification approach is proposed for building change detection using satellite stereo imagery. Firstly, DSMs are generated from satellite stereo imagery and further refined by using a segmentation result obtained from the Sobel gradients of the panchromatic image. Besides the refined DSMs, the panchromatic image and the pansharpened multispectral image are used as input features for mean-shift segmentation. The DSM is used to calculate the nDSM, out of which the initial building candidate regions are extracted. The candidate mask is further refined by morphological filtering and by excluding shadow regions. Following this, all segments that overlap with a building candidate region are determined. A building oriented segments merging procedure is introduced to generate a final building rooftop mask. As the last step, object based change detection is performed by directly comparing the building rooftops extracted from the pre- and after-event imagery and by fusing the change indicators with the roof-top region map. A quantitative and qualitative assessment of the proposed approach is provided by using WorldView-2 satellite data from Istanbul, Turkey.

  20. Detecting abrupt dynamic change based on changes in the fractal properties of spatial images

    Science.gov (United States)

    Liu, Qunqun; He, Wenping; Gu, Bin; Jiang, Yundi

    2017-10-01

    Many abrupt climate change events often cannot be detected timely by conventional abrupt detection methods until a few years after these events have occurred. The reason for this lag in detection is that abundant and long-term observational data are required for accurate abrupt change detection by these methods, especially for the detection of a regime shift. So, these methods cannot help us understand and forecast the evolution of the climate system in a timely manner. Obviously, spatial images, generated by a coupled spatiotemporal dynamical model, contain more information about a dynamic system than a single time series, and we find that spatial images show the fractal properties. The fractal properties of spatial images can be quantitatively characterized by the Hurst exponent, which can be estimated by two-dimensional detrended fluctuation analysis (TD-DFA). Based on this, TD-DFA is used to detect an abrupt dynamic change of a coupled spatiotemporal model. The results show that the TD-DFA method can effectively detect abrupt parameter changes in the coupled model by monitoring the changing in the fractal properties of spatial images. The present method provides a new way for abrupt dynamic change detection, which can achieve timely and efficient abrupt change detection results.

  1. Learning-based approach for online lane change intention prediction

    OpenAIRE

    Kumar, P.; Perrollaz, Mathias; Lefèvre, Stéphanie; Laugier, Christian

    2013-01-01

    International audience; Predicting driver behavior is a key component for Advanced Driver Assistance Systems (ADAS). In this paper, a novel approach based on Support Vector Machine and Bayesian filtering is proposed for online lane change intention prediction. The approach uses the multiclass probabilistic outputs of the Support Vector Machine as an input to the Bayesian filter, and the output of the Bayesian filter is used for the final prediction of lane changes. A lane tracker integrated in a ...

  2. Demonstrating Change with Astronaut Photography Using Object Based Image Analysis

    Science.gov (United States)

    Hollier, Andi; Jagge, Amy

    2017-01-01

    Every day, hundreds of images of Earth flood the Crew Earth Observations database as astronauts use hand held digital cameras to capture spectacular frames from the International Space Station. The variety of resolutions and perspectives provide a template for assessing land cover change over decades. We will focus on urban growth in the second fastest growing city in the nation, Houston, TX, using Object-Based Image Analysis. This research will contribute to the land change science community, integrated resource planning, and monitoring of the rapid rate of urban sprawl.

  3. Attribution of regional flood changes based on scaling fingerprints

    Science.gov (United States)

    Viglione, Alberto; Mangini, Walter; Merz, Bruno; Viet Dung, Nguyen; Parajka, Juraj; Nester, Thomas; Blöschl, Günter

    2017-04-01

    Changes in the river flood regime may be due to atmospheric processes (e.g., increasing precipitation), catchment processes (e.g., soil compaction associated with land use change), and river system processes (e.g., loss of retention volume in the floodplains). We propose a framework for attributing flood changes to these drivers based on a regional analysis. We exploit the scaling characteristics (i.e., fingerprints) with catchment area of the effects of the drivers on flood changes. The estimation of their relative contributions is framed in Bayesian terms. Analysis of a synthetic, controlled case suggests that the accuracy of the regional attribution increases with increasing number of sites and record lengths, decreases with increasing regional heterogeneity, increases with increasing difference of the scaling fingerprints, and decreases with an increase of their prior uncertainty. The applicability of the framework is illustrated for a case study set in Austria, where positive flood trends have been observed at many sites in the past decades. The individual scaling fingerprints related to the atmospheric, catchment, and river system processes are estimated from rainfall data and simple hydrological modeling. Although the distributions of the contributions are rather wide, the attribution identifies precipitation change as the main driver of flood change in the study region.

  4. Socioeconomic, sociodemographic and attitudinal correlates of the tempo of divorce.

    Science.gov (United States)

    Corley, C J; Woods, A Y

    1991-01-01

    The association between sociodemographic, demographic, and attitudinal measures and the timing or tempo of marital dissolution over a 14-year time span is examined. Separation is considered equivalent to divorce. Early and late divorce are differentiated by whether the event occurred before or after the average number of years married prior to divorce. Data were obtained on husbands and wives within childbearing years (up to 39 years) in the 1st years of the 1st marriage. A random stratified sample of 610 couples was drawn from records of marriages in a midwestern county between 1972-77. Reinterviews were conducted on 544 couples in April 1985. socioeconomic variables included educational attainment, occupational prestige, wife's employment status, wife's future work plans, husband's attitude to wife's future work plans, total family income, and level of satisfaction with current financial status. Demographic variables are age at marriage, number of children in 1985, marital duration, and desired family size. Attitudinal items were religiosity and gender role orientations (traditionalism, modernism, egalitarianism). Exposure to divorce was not equitably distributed for the 108 who divorced, but this was not statistically significant. The results indicate that those divorced earlier were wives who worked outside the home, worked at more prestigious jobs, planned to be employed throughout married life, and whose father had a higher level of educational attainment. This finding is not consistent with prior research which has shown that favorable socioeconomic conditions lower the probability of divorce. The timing of divorce was affected by the presence of children. Those married at younger ages divorced earlier and couples with children delayed divorcing longer than couples without children. These findings were consistent with earlier research. Catholic wives delayed divorce longer than non-Catholic wives. Males lower in sexual satisfaction divorced earlier. Divorce

  5. O Espaço-tempo Subjetivo do Indivíduo (ETSI

    Directory of Open Access Journals (Sweden)

    Celson D. Pereira

    2010-07-01

    Full Text Available Graças a seu Sistema Nervoso Central – SNC, um indivíduo se percebe no espaço e no tempo de seu ambiente. Mas, através de seus sentidos suas percepções são subjetivas. Por outro lado, sua mente é influenciada por agentes físicos e substâncias químicas que venha a ingerir. Estas constatações banais, do cotidiano, devem ser levadas em conta quando se empreende a elaboração de uma teoria relativa à mente. Os contextos em que se insere uma teoria dessa natureza envolvem antigas questões, ainda abertas, fazendo parte do denominado “Problema do Conhecimento”. Apresento um pequeno percurso histórico das reflexões de teóricos de diferentes especialidades sobre aquele problema. Proponho que hoje, participando daquele percurso, uma estrutura conceitual pode ser concebida, conjugando o indivíduo se percebendo em três instâncias: o ambiente físico, o ambiente sociocultural e seu próprio corpo, constituindo assim, suas características mentais, sua memória e sua história de vida. Trata-se de um super-espaço, que, independentemente, de ser, objetivamente, imaginável, ou não, referese a algo que existe. Tenho denominado esta estrutura por (ETSI. Como emergente do SNC ela pode ser estudada em contextos de investigações da neurociência contemporânea. Deste empreendimento, proponho que se podem originar bases científicas para psicologia.Palavras-chave: Interior do indivíduo; Neurociência; Complexidade; Espaço-tempo Subjetivo; Consciência.

  6. Place-based collaboration: Leadership for a changing world

    Directory of Open Access Journals (Sweden)

    Hambleton Robin

    2015-12-01

    Full Text Available Placeless power, meaning the exercise of power by decision-makers who are unconcerned about the impact of their decisions on communities living in particular places, has grown significantly in the last thirty years. A consequence is that societies are becoming more unequal. Even in the wealthy global cities modern capitalism is increasing inequality at a formidable rate. In a new book the author provides an international, comparative analysis of the efforts being made by place-based leaders to create inclusive, sustainable cities. This article draws on the evidence presented in the book to suggest that place-based leaders can play a significant role in advancing social justice, promoting care for the environment and bolstering community empowerment. An opening section introduces the idea of place-based power, providing a context for the subsequent discussion. A second section sets out a new way of conceptualising the roles of place-based leaders in any given context, a framework described as the New Civic Leadership. This distinguishes five different realms of civic leadership. The third section provides an example of place-based leadership in action. It outlines the way local leadership has brought about a remarkable transformation of the central area of Melbourne, Australia. A final section presents a comparative discussion of three themes relating to place-based leadership and local collaboration: (i the changing possibilities for place-based leadership in our rapidly globalising world, (ii the need for outward-facing local government leadership given the changing nature of public policy challenges and (iii the role of place-based leadership in bringing about radical public innovation.

  7. Diffusion Geometry Based Nonlinear Methods for Hyperspectral Change Detection

    Science.gov (United States)

    2010-05-12

    Schaum and A. Stocker, “Hyperspectral change detection and supervised matched filtering based on covariance equalization,” Proceedings of the SPIE, vol...5425, pp. 77- 90 (2004). 10. A. Schaum and A. Stocker, “Linear chromodynamics models for hyperspectral target detection,” Proceedings of the IEEE...Aerospace Conference (February 2003). 11. A. Schaum and A. Stocker, “Linear chromodynamics models for hyperspectral target detection

  8. Ratio-based estimators for a change point in persistence.

    Science.gov (United States)

    Halunga, Andreea G; Osborn, Denise R

    2012-11-01

    We study estimation of the date of change in persistence, from [Formula: see text] to [Formula: see text] or vice versa. Contrary to statements in the original papers, our analytical results establish that the ratio-based break point estimators of Kim [Kim, J.Y., 2000. Detection of change in persistence of a linear time series. Journal of Econometrics 95, 97-116], Kim et al. [Kim, J.Y., Belaire-Franch, J., Badillo Amador, R., 2002. Corringendum to "Detection of change in persistence of a linear time series". Journal of Econometrics 109, 389-392] and Busetti and Taylor [Busetti, F., Taylor, A.M.R., 2004. Tests of stationarity against a change in persistence. Journal of Econometrics 123, 33-66] are inconsistent when a mean (or other deterministic component) is estimated for the process. In such cases, the estimators converge to random variables with upper bound given by the true break date when persistence changes from [Formula: see text] to [Formula: see text]. A Monte Carlo study confirms the large sample downward bias and also finds substantial biases in moderate sized samples, partly due to properties at the end points of the search interval.

  9. CHANGE DETECTION BASED ON PERSISTENT SCATTERER INTERFEROMETRY – A NEW METHOD OF MONITORING BUILDING CHANGES

    Directory of Open Access Journals (Sweden)

    C. H. Yang

    2016-06-01

    Full Text Available Persistent Scatterer Interferometry (PSI is a technique to detect a network of extracted persistent scatterer (PS points which feature temporal phase stability and strong radar signal throughout time-series of SAR images. The small surface deformations on such PS points are estimated. PSI particularly works well in monitoring human settlements because regular substructures of man-made objects give rise to large number of PS points. If such structures and/or substructures substantially alter or even vanish due to big change like construction, their PS points are discarded without additional explorations during standard PSI procedure. Such rejected points are called big change (BC points. On the other hand, incoherent change detection (ICD relies on local comparison of multi-temporal images (e.g. image difference, image ratio to highlight scene modifications of larger size rather than detail level. However, image noise inevitably degrades ICD accuracy. We propose a change detection approach based on PSI to synergize benefits of PSI and ICD. PS points are extracted by PSI procedure. A local change index is introduced to quantify probability of a big change for each point. We propose an automatic thresholding method adopting change index to extract BC points along with a clue of the period they emerge. In the end, PS ad BC points are integrated into a change detection image. Our method is tested at a site located around north of Berlin main station where steady, demolished, and erected building substructures are successfully detected. The results are consistent with ground truth derived from time-series of aerial images provided by Google Earth. In addition, we apply our technique for traffic infrastructure, business district, and sports playground monitoring.

  10. Change Detection Based on Persistent Scatterer Interferometry - a New Method of Monitoring Building Changes

    Science.gov (United States)

    Yang, C. H.; Kenduiywo, B. K.; Soergel, U.

    2016-06-01

    Persistent Scatterer Interferometry (PSI) is a technique to detect a network of extracted persistent scatterer (PS) points which feature temporal phase stability and strong radar signal throughout time-series of SAR images. The small surface deformations on such PS points are estimated. PSI particularly works well in monitoring human settlements because regular substructures of man-made objects give rise to large number of PS points. If such structures and/or substructures substantially alter or even vanish due to big change like construction, their PS points are discarded without additional explorations during standard PSI procedure. Such rejected points are called big change (BC) points. On the other hand, incoherent change detection (ICD) relies on local comparison of multi-temporal images (e.g. image difference, image ratio) to highlight scene modifications of larger size rather than detail level. However, image noise inevitably degrades ICD accuracy. We propose a change detection approach based on PSI to synergize benefits of PSI and ICD. PS points are extracted by PSI procedure. A local change index is introduced to quantify probability of a big change for each point. We propose an automatic thresholding method adopting change index to extract BC points along with a clue of the period they emerge. In the end, PS ad BC points are integrated into a change detection image. Our method is tested at a site located around north of Berlin main station where steady, demolished, and erected building substructures are successfully detected. The results are consistent with ground truth derived from time-series of aerial images provided by Google Earth. In addition, we apply our technique for traffic infrastructure, business district, and sports playground monitoring.

  11. Idiosyncratic responses of grizzly bear habitat to climate change based on projected food resource changes.

    Science.gov (United States)

    Roberts, David R; Nielsen, Scott E; Stenhouse, Gordon B

    2014-07-01

    Climate change vulnerability assessments for species of conservation concern often use species distribution and ecological niche modeling to project changes in habitat. One of many assumptions of these approaches is that food web dependencies are consistent in time and environmental space. Species at higher trophic levels that rely on the availability of species at lower trophic levels as food may be sensitive to extinction cascades initiated by changes in the habitat of key food resources. Here we assess climate change vulnerability for Ursus arctos (grizzly bears) in the southern Canadian Rocky Mountains using projected changes to 17 of the most commonly consumed plant food items. We used presence-absence information from 7088 field plots to estimate ecological niches and to project changes in future distributions of each species. Model projections indicated idiosyncratic responses among food items. Many food items persisted or even increased, although several species were found to be vulnerable based on declines or geographic shifts in suitable habitat. These included Hedysarum alpinum (alpine sweet vetch), a critical spring and autumn root-digging resource when little else is available. Potential habitat loss was also identified for three fruiting species of lower importance to bears: Empetrum nigrum (crowberry), Vaccinium scoparium (grouseberry), and Fragaria virginiana (strawberry). A general trend towards uphill migration of bear foods may result in higher vulnerability to bear populations at low elevations, which are also those that are most likely to have human-bear conflict problems. Regardless, a wide diet breadth of grizzly bears, as well as wide environmental niches of most food items, make climate change a much lower threat to grizzly bears than other bear species such as polar bears and panda bears. We cannot exclude, however, future alterations in human behavior and land use resulting from climate change that may reduce survival rates.

  12. Thermosetting polymer for dynamic nuclear polarization: Solidification of an epoxy resin mixture including TEMPO

    Energy Technology Data Exchange (ETDEWEB)

    Noda, Yohei, E-mail: noda.yohei@jaea.go.jp [Quantum Beam Science Centre, Sector of Nuclear Science Research, Japan Atomic Energy Agency, Shirakata-Shirane, Tokai, Ibaraki 319-1195 (Japan); Kumada, Takayuki [Quantum Beam Science Centre, Sector of Nuclear Science Research, Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizugawa, Kyoto 619-0215 (Japan); Yamaguchi, Daisuke; Shamoto, Shin-ichi [Quantum Beam Science Centre, Sector of Nuclear Science Research, Japan Atomic Energy Agency, Shirakata-Shirane, Tokai, Ibaraki 319-1195 (Japan)

    2015-03-11

    We investigated the dynamic nuclear polarization (DNP) of typical thermosetting polymers (two-component type epoxy resins; Araldite{sup ®} Standard or Araldite{sup ®} Rapid) doped with a (2,2,6,6-tetramethylpiperidine-1-yl)oxy (TEMPO) radical. The doping process was developed by carefully considering the decomposition of TEMPO during the solidification of the epoxy resin. The TEMPO electron spin in each two-component paste decayed slowly, which was favorable for our study. Furthermore, despite the dissolved TEMPO, the mixture of the two-component paste successfully solidified. With the resulting TEMPO-doped epoxy-resin samples, DNP experiments at 1.2 K and 3.35 T indicated a magnitude of a proton-spin polarization up to 39%. This polarization is similar to that (35%) obtained for TEMPO-doped polystyrene (PS), which is often used as a standard sample for DNP. To combine this solidification of TEMPO-including mixture with a resin-casting technique enables a creation of polymeric target materials with a precise and complex structure.

  13. Exploring Global Change In Place-Based Case Studies

    Science.gov (United States)

    Moosavi, S. C.

    2011-12-01

    The complexity of global climate change makes the subject challenging for the average student, particularly given the nuanced feedbacks and exceptions to the general "warming" or "drying" trend that may be experienced at the local and regional level at which most people experience geologic processes. Geoscience educators can reduce these barriers and draw in student learners by adopting a place-based approach to teaching and researching geologic principles that relate to global change. Assisting students in recognizing and understanding the geologic environment in which they live and study has the side benefit of making the potential effect of climate change tangible. This presentation will review several approaches for using place-based case studies to explore global climate change issues in large lecture, small seminar, field research and service learning environments. The special place project used in large introductory physical geology courses requires each student to select a place familiar and unique to them for an in depth study of the common course content as the semester progresses. Students are specifically tasked with identifying how their site came to be, the geologic processes that act upon it today, how the site may have been different during the last glacial advance and how global climate change (specifically warming of 3OC over 50 years) might impact the site. The concept that change has occurred at the student's site in the past, even far from glacial environments, opens students to the scale of potential anthropogenic climate change. A freshman seminar Global Warming & Climate Change - Service in Preparation for Climate Change: The Second Battle of New Orleans focused on the environmental threats to New Orleans and southeastern Louisiana resulting from regional land use decisions in the centuries before Hurricane Katrina, and the threat that global change relating to sea level rise, acceleration of the hydrologic cycle and intensification of

  14. Assay for the transbilayer distribution of glycolipids: Selective oxidation of glucosylceramide to glucuronylceramide by TEMPO nitroxyl radicals

    NARCIS (Netherlands)

    Sillence, D.J.; Raggers, R.J.; Neville, D.C.A.; Harvey, D.J.; van Meer, G.|info:eu-repo/dai/nl/068570368

    2000-01-01

    In the present study, 2,2,6,6-tetramethylpiperidinooxy nitroxide (TEMPO) has been applied successfully to discriminate between glucosylceramide in the outer and inner leaflets of closed membrane bilayers. The nitroxyl radicals TEMPO and carboxy-TEMPO, once oxidized to nitrosonium ions, are capable

  15. Influencia del tempo de la música en las emociones

    OpenAIRE

    Jonathan Azael Caballero-Meneses; Marina Menez

    2010-01-01

    Se sabe que la música puede influir en dos componentes de las emociones: el arousal y la valencia. En particular, se ha reportado que el tempo o rapidez de la música está directamente relacionado con el arousal, aunque su relación con la valencia o medida de afecto no es aún clara. En este trabajo se analizó la influencia del tempo en ambos componentes mediante la exposición de 24 estudiantes de licenciatura a treinta extractos musicales de distinto tempo. Además se evaluó la posible m...

  16. Influencia del tempo de la música en las emociones

    Directory of Open Access Journals (Sweden)

    Jonathan Azael Caballero-Meneses

    2010-01-01

    exposición de 24 estudiantes de licenciatura a treinta extractos musicales de distinto tempo. Además se evaluó la posible modulación de la relación tempo-valencia por el rasgo de personalidad extroversión/introversión. Los resultados confirmaron la influencia del tempo sobre el arousal, pero no sobre la valencia, así como una posible mediación de la dimensión de personalidad introversión-extroversión sobre la valencia.

  17. Tempo de reação visual em jogadores de futebol

    OpenAIRE

    Jorge, Jorge; Fernandes, Paulo Rodrigues; Queirós, A

    2014-01-01

    Publicado em "Abstract book CIOCV 2014" Objetivo: Determinar a influência da lateralidade e dominância ocular no tempo de reação visual em jogadores de futebol. Métodos: Determinou-se la dominância ocular e a dominância motora (mão) em jogadores de futebol. Também se determinou o tempo de reação motor e sensorial (sportvision reaction time app). Realizaram-se as medidas do tempo de reação visual sensorial e motor 3 vezes para cada uma das mã...

  18. The rhythm and tempo of the game of highly qualified teams

    Directory of Open Access Journals (Sweden)

    V’yacheslav Mulik

    2015-06-01

    Full Text Available Purpose: to set indicators of rhythm and tempo of the game teams of high qualification. Material and Methods: analysis of the scientific-methodical literature, registration of technical-tactical actions, methods of mathematical statistics. The study of competitive activities was conducted with participating teams of world championship 2014. Results: the acticle shows indicators of the rhythm and tempo of the game of well-qualified teams. Conclusions: teams-winners have surpassed teams that concede in terms of indicators of passes the ball, shots at goal, the rhythm of the game, tempo of game.

  19. Intraspecies transmission of BASE induces clinical dullness and amyotrophic changes.

    Directory of Open Access Journals (Sweden)

    Guerino Lombardi

    2008-05-01

    Full Text Available The disease phenotype of bovine spongiform encephalopathy (BSE and the molecular/ biological properties of its prion strain, including the host range and the characteristics of BSE-related disorders, have been extensively studied since its discovery in 1986. In recent years, systematic testing of the brains of cattle coming to slaughter resulted in the identification of at least two atypical forms of BSE. These emerging disorders are characterized by novel conformers of the bovine pathological prion protein (PrP(TSE, named high-type (BSE-H and low-type (BSE-L. We recently reported two Italian atypical cases with a PrP(TSE type identical to BSE-L, pathologically characterized by PrP amyloid plaques and known as bovine amyloidotic spongiform encephalopathy (BASE. Several lines of evidence suggest that BASE is highly virulent and easily transmissible to a wide host range. Experimental transmission to transgenic mice overexpressing bovine PrP (Tgbov XV suggested that BASE is caused by a prion strain distinct from the BSE isolate. In the present study, we experimentally infected Friesian and Alpine brown cattle with Italian BSE and BASE isolates via the intracerebral route. BASE-infected cattle developed amyotrophic changes accompanied by mental dullness. The molecular and neuropathological profiles, including PrP deposition pattern, closely matched those observed in the original cases. This study provides clear evidence of BASE as a distinct prion isolate and discloses a novel disease phenotype in cattle.

  20. Communicating climate change adaptation information using web-based platforms

    Science.gov (United States)

    Karali, Eleni; Mattern, Kati

    2017-07-01

    To facilitate progress in climate change adaptation policy and practice, it is important not only to ensure the production of accurate, comprehensive and relevant information, but also the easy, timely and affordable access to it. This can contribute to better-informed decisions and improve the design and implementation of adaptation policies and other relevant initiatives. Web-based platforms can play an important role in communicating and distributing data, information and knowledge that become constantly available, reaching out to a large group of potential users. Indeed in the last decade there has been an extensive increase in the number of platforms developed for this purpose in many fields including climate change adaptation. This short paper concentrates on the web-based adaptation platforms developed in Europe. It provides an overview of the recently emerged landscape, examines the basic characteristics of a set of platforms that operate at national, transnational and European level, and discusses some of the key challenges related to their development, maintenance and overall management. Findings presented in this short paper are discussed in greater detailed in the Technical Report of the European Environment Agency Overview of climate change adaptation platforms in Europe.

  1. Molybdenum oxide-base phase change resistive switching material

    Science.gov (United States)

    Ogawa, Yukiko; Shindo, Satoshi; Sutou, Yuji; Koike, Junichi

    2017-10-01

    We investigated the temperature dependence of electrical resistance of a reactively sputtered Mo-oxide film with a composition near MoO3 and found that the sputtered Mo-oxide film shows a large electrical resistance drop of much more than 104-fold at over 350 °C. Such a large drop in electrical resistance was found to be caused by a phase transition from an amorphous state to a crystalline state. It was confirmed that a W/Mo-oxide/W device shows a typical resistive switching effect of a phase change random access memory material and exhibits reversible resistive switching by the application of unidirectional set and reset voltage. The resistance contrast of the device had a large value of about 105-106. Furthermore, the Mo-oxide film showed much better thermal stability in the amorphous state than conventional phase change materials. These results indicate that the Mo-oxide film is a promising oxide-base phase change material for phase change random access memory.

  2. Psicologia e lazer: um estudo sobre o tempo liberado da escola da infância contemporânea

    OpenAIRE

    Michelle Araujo Rocha

    2011-01-01

    Esta dissertação procurou identificar e descrever as atividades realizadas durante o tempo liberado da escola de crianças com nove e dez anos de idade que cursavam o 4º ano do ensino fundamental de uma escola pública e outra particular da cidade de Belo Horizonte, pretendendo estabelecer uma relação entre o que faziam e seu desenvolvimento. A fundamentação teórica e empírica teve como base a Psicologia Positiva, os Estudos do Lazer e trabalhos na área da infância e atividades extraclasse, em ...

  3. Chang'E-3 data pre-processing system based on scientific workflow

    Science.gov (United States)

    tan, xu; liu, jianjun; wang, yuanyuan; yan, wei; zhang, xiaoxia; li, chunlai

    2016-04-01

    The Chang'E-3(CE3) mission have obtained a huge amount of lunar scientific data. Data pre-processing is an important segment of CE3 ground research and application system. With a dramatic increase in the demand of data research and application, Chang'E-3 data pre-processing system(CEDPS) based on scientific workflow is proposed for the purpose of making scientists more flexible and productive by automating data-driven. The system should allow the planning, conduct and control of the data processing procedure with the following possibilities: • describe a data processing task, include:1)define input data/output data, 2)define the data relationship, 3)define the sequence of tasks,4)define the communication between tasks,5)define mathematical formula, 6)define the relationship between task and data. • automatic processing of tasks. Accordingly, Describing a task is the key point whether the system is flexible. We design a workflow designer which is a visual environment for capturing processes as workflows, the three-level model for the workflow designer is discussed:1) The data relationship is established through product tree.2)The process model is constructed based on directed acyclic graph(DAG). Especially, a set of process workflow constructs, including Sequence, Loop, Merge, Fork are compositional one with another.3)To reduce the modeling complexity of the mathematical formulas using DAG, semantic modeling based on MathML is approached. On top of that, we will present how processed the CE3 data with CEDPS.

  4. Analyzing us Mainland Precipitation Pattern Change Based on a Kinetics-Based GIS Method

    Science.gov (United States)

    Cui, K.

    2017-10-01

    Precipitation is a key type of dynamic geographic phenomena. With time changing, precipitation areas can move, merge, split or disappear. Based on existing research methods, this paper applies a kinetics-based GIS method to analyze precipitation patterns in US mainland area. Annual precipitation data of 1950 and 2010 in small spatial resolution are selected for analysis. Three major dynamic changing types are considered for analysis: divergence, rotation and deformation. Objects to analyze transitions are designed, and displacement of precipitation area is calculated. After applying kinetics-based algorithm in precipitation data, conclusions can be made that there are some significant pattern changes in some key areas of US, such as east coast, west coast and Mississippi river area. Dynamic precipitation pattern changes of divergence/convergence, rotation and deformation in different areas of US mainland are analyzed and compared.

  5. FPGA-based prototype storage system with phase change memory

    Science.gov (United States)

    Li, Gezi; Chen, Xiaogang; Chen, Bomy; Li, Shunfen; Zhou, Mi; Han, Wenbing; Song, Zhitang

    2016-10-01

    With the ever-increasing amount of data being stored via social media, mobile telephony base stations, and network devices etc. the database systems face severe bandwidth bottlenecks when moving vast amounts of data from storage to the processing nodes. At the same time, Storage Class Memory (SCM) technologies such as Phase Change Memory (PCM) with unique features like fast read access, high density, non-volatility, byte-addressability, positive response to increasing temperature, superior scalability, and zero standby leakage have changed the landscape of modern computing and storage systems. In such a scenario, we present a storage system called FLEET which can off-load partial or whole SQL queries to the storage engine from CPU. FLEET uses an FPGA rather than conventional CPUs to implement the off-load engine due to its highly parallel nature. We have implemented an initial prototype of FLEET with PCM-based storage. The results demonstrate that significant performance and CPU utilization gains can be achieved by pushing selected query processing components inside in PCM-based storage.

  6. Spontaneous movement tempo can be influenced by combining action observation and somatosensory stimulation

    Directory of Open Access Journals (Sweden)

    Ambra eBisio

    2015-08-01

    Full Text Available Spontaneous movement tempo (SMT was a popular field of study of the Gestalt psychologists . It can be determined from subjects freely tapping out a rhythm with their finger, and it has been found to average about 2Hz. A previous study showed that SMT changed after the observation of rhythmical movements performed at frequency different from the SMT. This effect was long-lasting only when movement execution immediately followed action observation (AO. We recently demonstrated that only when AO was combined with peripheral nerve stimulation (AO-PNS was it possible to induce plastic changes in the excitability of the motor cortex, whereas AO and PNS alone did not evoke any changes.Here we investigated whether the observation of rhythmical actions at a frequency higher than the SMT combined with PNS induced lasting changes in SMT even in absence of immediate movement execution. Forty-eight participants were assigned to 4 groups. In AO-PNS group they observed a video showing a right hand performing a finger opposition movement sequence at 3Hz and contemporarily received an electrical stimulation at the median nerve; in AO group and PNS group participants either observed the same video or received the same electrical stimulation of the AO-PNS group, respectively; in LANDSCAPE group subjects observed a neutral video. Participants performed a finger opposition movement sequence at spontaneous movement rate before and 30 min after the conditioning protocols. Results showed that SMT significantly changed only after AO-PNS. This result suggested that the AO-PNS protocol was able to induce lasting changes in SMT due to neuroplasticity mechanisms, indicating possible application of AO-PNS in rehabilitative treatments.

  7. Melanin-based colour polymorphism responding to climate change.

    Science.gov (United States)

    Roulin, Alexandre

    2014-11-01

    Climate warming leads to a decrease in biodiversity. Organisms can deal with the new prevailing environmental conditions by one of two main routes, namely evolving new genetic adaptations or through phenotypic plasticity to modify behaviour and physiology. Melanin-based colouration has important functions in animals including a role in camouflage and thermoregulation, protection against UV-radiation and pathogens and, furthermore, genes involved in melanogenesis can pleiotropically regulate behaviour and physiology. In this article, I review the current evidence that differently coloured individuals are differentially sensitive to climate change. Predicting which of dark or pale colour variants (or morphs) will be more penalized by climate change will depend on the adaptive function of melanism in each species as well as how the degree of colouration covaries with behaviour and physiology. For instance, because climate change leads to a rise in temperature and UV-radiation and dark colouration plays a role in UV-protection, dark individuals may be less affected from global warming, if this phenomenon implies more solar radiation particularly in habitats of pale individuals. In contrast, as desertification increases, pale colouration may expand in those regions, whereas dark colourations may expand in regions where humidity is predicted to increase. Dark colouration may be also indirectly selected by climate warming because genes involved in the production of melanin pigments confer resistance to a number of stressful factors including those associated with climate warming. Furthermore, darker melanic individuals are commonly more aggressive than paler conspecifics, and hence they may better cope with competitive interactions due to invading species that expand their range in northern latitudes and at higher altitudes. To conclude, melanin may be a major component involved in adaptation to climate warming, and hence in animal populations melanin-based colouration is

  8. Estimativa temporal de enchentes de rios em tempo linear

    Directory of Open Access Journals (Sweden)

    Alice Fonseca Finger

    2011-12-01

    Full Text Available O número de enchentes em rios tem aumentado significativamente em diversas localidades do Brasil, causando enormes prejuízos à população. Diante desse fato, o presente trabalho propõe estimar o dia em que o volume de um rio irá transbordar. Para a simulação de enchente adota-se um modelo teórico matemático, onde nas resoluções das equações que representam o modelo, propõe-se aplicar métodos numéricos, a fim de analisar qual método apresenta melhor solução, considerando o esforço computacional e a exatidão da solução. O modelo hidrológico adotado neste trabalho realiza a previsão através da solução de Burgers, porém, essa solução tem uma complexidade O(nr+1 , não indicada em termos computacionais. Mas, ao utilizar métodos de passos simples para prever o dia da enchente, essa complexidade reduz para O(n. No presente trabalho, mostra-se que o modelo adotado possui solução com complexidade computacional maior do que a complexidade dos métodos numéricos adaptados ao modelo e apresenta um modelo computacional que estima o dia que o rio irá transbordar em tempo linear. Após a análise do método numérico realiza-se a simulação numérica de enchente considerando dados hidrológicos pertinentes à área física de determinado rio da região sul do RS.

  9. Prenatal Alcohol Exposure, ADHD, and Sluggish Cognitive Tempo

    Science.gov (United States)

    Graham, Diana M.; Crocker, Nicole; Deweese, Benjamin N.; Roesch, Scott C.; Coles, Claire D.; Kable, Julie A.; May, Philip A.; Kalberg, Wendy O.; Sowell, Elizabeth R.; Jones, Kenneth Lyons; Riley, Edward P.; Mattson, Sarah N.

    2012-01-01

    Background Children with heavy prenatal alcohol exposure often meet criteria for attention-deficit/hyperactivity disorder (ADHD). ADHD research has examined subtype differences in symptomology, including sluggish cognitive tempo (SCT). This construct is defined by behavioral symptoms including, hypoactivity and daydreaming, and has been linked to increased internalizing behaviors. The current study examined if similar findings are displayed in children with prenatal alcohol exposure. Methods As part of a multisite study, caregivers of 272 children (8–16y) completed the SCT scale and Child Behavior Checklist (CBCL). Four groups were included: alcohol-exposed children with ADHD (ALC+; n=75), alcohol-exposed children without ADHD (ALC−; n=35), non-exposed children with ADHD (ADHD; n=60), and non-exposed children without ADHD (CON; n=102). SCT and CBCL scores were analyzed using 2 (exposure) × 2 (ADHD) ANOVAs. Pearson correlations measured the relations between SCT, CBCL, and FSIQ. Discriminant function analysis (DFA) examined if SCT items could accurately classify groups. Results Analyses revealed significant main effects of Exposure and ADHD on SCT, internalizing, and externalizing scores, and significant interaction effects on SCT and internalizing scores. SCT significantly correlated with internalizing, externalizing, and attention ratings in all groups and with FSIQ in ALC+. DFA indicated that specific SCT items could distinguish ALC− from CON. Conclusions Alcohol-exposed children exhibited elevated SCT scores. Elevations were related to increased parent ratings of internalizing and externalizing behaviors and attention. These findings occurred in alcohol-exposed children regardless of ADHD symptoms and specific SCT items proved useful in distinguishing exposed children suggesting clinical utility for this measure in further defining the neurobehavioral profile related to prenatal alcohol exposure. PMID:22817778

  10. Climatic Changes on Tibetan Plateau Based on Ice Core Records

    Science.gov (United States)

    Yao, T.

    2008-12-01

    Climatic changes have been reconstructed for the Tibetan Plateau based on ice core records. The Guliya ice core on the Tibetan Plateau presents climatic changes in the past 100,000 years, thus is comparative with that from Vostok ice core in Antarctica and GISP2 record in Arctic. These three records share an important common feature, i.e., our climate is not stable. It is also evident that the major patterns of climatic changes are similar on the earth. Why does climatic change over the earth follow a same pattern? It might be attributed to solar radiation. We found that the cold periods correspond to low insolation periods, and warm periods to high insolation periods. We found abrupt climatic change in the ice core climatic records, which presented dramatic temperature variation of as much as 10 °C in 50 or 60 years. Our major challenge in the study of both climate and environment is that greenhouse gases such as CO2, CH4 are possibly amplifying global warming, though at what degree remains unclear. One of the ways to understand the role of greenhouse gases is to reconstruct the past greenhouse gases recorded in ice. In 1997, we drilled an ice core from 7100 m a.s.l. in the Himalayas to reconstruct methane record. Based on the record, we found seasonal cycles in methane variation. In particular, the methane concentration is high in summer, suggestiing active methane emission from wet land in summer. Based on the seasonal cycle, we can reconstruct the methane fluctuation history in the past 500 years. The most prominent feature of the methane record in the Himalayan ice core is the abrupt increase since 1850 A.D.. This is closely related to the industrial revolution worldwide. We can also observe sudden decrease in methane concentration during the World War I and World War II. It implies that the industrial revolution has dominated the atmospheric greenhouse gas emission for about 100 years. Besides, the average methane concentration in the Himalayan ice core is

  11. GPU based detection of topological changes in Voronoi diagrams

    Science.gov (United States)

    Bernaschi, M.; Lulli, M.; Sbragaglia, M.

    2017-04-01

    The Voronoi diagrams are an important tool having theoretical and practical applications in a large number of fields. We present a new procedure, implemented as a set of CUDA kernels, which detects, in a general and efficient way, topological changes in case of dynamic Voronoi diagrams whose generating points move in time. The solution that we provide has been originally developed to identify plastic events during simulations of soft-glassy materials based on a lattice Boltzmann model with frustrated-short range attractive and mid/long-range repulsive-interactions. Along with the description of our approach, we present also some preliminary physics results.

  12. O caminho do tempo : trajetorias de vida do servidor publico aposentado

    OpenAIRE

    Abdias Vilar de Carvalho

    2002-01-01

    Resumo: o tema central desta tese é o tempo social, que será analisado através de algumas concepções formuladas pela Sociologia. Apoiamo-nos em E. Durkheim, o tempo como representação coletiva, em G. Gurvitch, a multiplicidade dos tempos sociais, e em M Halbwachs, memória coletiva, memória social. Esse referencial teórico é seguido de um estudo denominado de Organização do tempo na vida do aposentado, utilizando o conceito de cotídianidade de Agnes Hel/er. Trata-se de uma exposição da vida so...

  13. Magnetic exchange interaction in gadolinium(III) complex having aliphatic nitroxide radical TEMPO

    Energy Technology Data Exchange (ETDEWEB)

    Nakamura, Takeshi; Ishida, Takayuki, E-mail: takayuki.ishida@uec.ac.jp [Department of Engineering Science, The University of Electro-Communications, Tokyo (Japan)

    2016-02-01

    We synthesized a new compound, [Gd(hfac){sub 3}(MeOH)(TEMPO)] (TEMPO = 2,2,6,6-tetramethylpiperidin-1-oxyl; Hhfac = 1,1,1,5,5,5-hexafluoropentane-2,4-dione) with the metal/radical ratio of 1/1. This compound has an advantage in the magnetic analysis, because the exchange coupling system is described with a unique coupling parameter J, when compared to the structure and magnetic properties of the previous TEMPO and related complexes. The X-ray crystal structure analysis of [Gd(hfac){sub 3}(MeOH)(TEMPO)] revealed the N-O and Gd-O(N) bond lengths are 1.299(9) and 2.307(5) Å, respectively, and the Gd-O-N angle is 149.4(5)°. The magnetic study clarified the Gd{sup 3+}-radical antiferromagnetic interaction of 2J/k{sub B} = −3.5(1) K.

  14. Lunar soil strength estimation based on Chang'E-3 images

    Science.gov (United States)

    Gao, Yang; Spiteri, Conrad; Li, Chun-Lai; Zheng, Yong-Chun

    2016-11-01

    Chang'E-3 (CE-3) was the third mission by China to explore the Moon which had landed two spacecraft, the CE-3 lander and Yutu rover on the lunar surface in late 2013. The paper presents analytical results of high-resolution terrain data taken by CE-3's onboard cameras. The image data processing aims to extract sinkage profiles of the wheel tracks during the rover traverse. Further analysis leads to derivation or estimation of lunar soil physical properties (in terms of strength and stiffness) based on the wheel sinkage, despite the fact Yutu does not possess in situ soil measurement instruments. Our findings indicate that the lunar soil at the CE-3 landing site has similar stiffness to what is measured at the Luna 17 landing site but has much less strength compared to the Apollo 15 landing site.

  15. Música para matar o tempo intervalo, suspensão e imersão

    Directory of Open Access Journals (Sweden)

    Rose Satiko Gitirana Hikiji

    2006-04-01

    Full Text Available Discuto neste artigo algumas relações da música com o tempo, em especial a relação entre as temporalidades dos grupos de crianças e jovens que pesquisei e certas propriedades do tempo da prática musical. Na pesquisa com alunos de um projeto governamental de ensino musical (Projeto Guri/ São Paulo, ouvi como principal justificativa para a procura pela música, a necessidade de "matar o tempo". Na perspectiva do senso comum, o tempo "ocioso" é um tempo perigoso. Para pais e proponentes, é preciso "ocupar o tempo" das crianças e jovens, é preciso "tirá-los da rua". Analiso aqui o processo de atribuição de valor negativo ao tempo livre e a especificidade do tempo do fazer musical. Aproximo o tempo musical do tempo do jogo, caracterizado pela imersão e pela suspensão do cotidiano. Analiso, finalmente, como o tempo para a música, inicialmente um intervalo, transborda para o resto da vida cotidiana, determinando ritmos, preenchendo vazios, construindo sentidos.This article discusses some of the relations between music and time, in particular the temporalities of groups of children and youths I have researched, and certain properties of music making time. In my research with students from a government musical education project (Guri Project/ São Paulo, the main reason given for studying music was their need to ‘kill time.’ From a common sense point of view, ‘idle’ time is dangerous time. Parents and project organizers stress the need ‘to occupy the time’ of children and youths, ‘to take them off of the streets.’ Here I analyze the negative evaluation of free time and the specificity of music making time. Musical time is compared with play time, characterized by an immersion in the activity and by the suspension of daily life. Finally, I ask how the time for music, initially an interval, overflows into the rest of the daily life, determining rhythms, filling empty spaces and building meanings.

  16. Studies on the Synergy of TEMPO/GEO-CAPE with GOES-R Advanced Baseline Imager

    Science.gov (United States)

    Ciren, P.; Kondragunta, S.

    2015-12-01

    TEMPO (Tropospheric Emissions: Monitoring of Pollution) is a space-borne UV-spectral radiometer to be flown in a geostationary orbit as part of NASA's Earth Venture program. NASA also is planning a decadal survey mission-The GEOstationary Coastal and Air Pollution Events (GEO-CAPE). However, NASA has initiated scientific studies to determine if TEMPO can meet both its and GEO-CAPE's requirements by synergistically retrieving aerosol properties using TEMPO and GOES-R Advanced Baseline Imager (ABI) measurements. Because TEMPO does not have a cloud camera or needed spectral channels to identify clouds and a Shortwave IR band to characterize the surface that are essential for aerosol retrievals, GOES-R ABI can supplement those measurements. GOES-R aerosol team conducted a study to determine idealistic position of TEMPO and GOES-R (in its both east and west location) for scene overlap and projection of ABI Shortwave IR (2.25 um) reflectance and cloud mask to TEMPO pixels. The BRDF effect was taken into consideration in determining the spatial coverage of pixels ideal for aerosol retrievals using ABI shortwave IR reflectance in TEMPO pixels to extrapolate reflectance at visible spectral bands. Analysis shows that GOES-R (in its west location, 135W) and TEMPO do not overlap over eastern part of the United States (US) and Atlantic Ocean, while GOES-R (in its east location, 75W) overlaps with TEMPO over most part of the United States (US) except for small part of Pacific Ocean. In addition, retrievals in the early morning and late afternoon are not possible due to BRDF effects rendering the surface reflectance too bright. Cloud mask information from GOES-R observations in both its east and west location seems to be sufficient for TEMPO. In summary, GOES-R ABI Shortwave IR radiances and cloud mask information are adequate to be used with TEMPO measurements to retrieve aerosol optical depth product several times during the sunlit portion of the continental US.

  17. TEMPO-Conjugated Gold Nanoparticles for Reactive Oxygen Species Scavenging and Regulation of Stem Cell Differentiation.

    Science.gov (United States)

    Li, Jingchao; Zhang, Jing; Chen, Ying; Kawazoe, Naoki; Chen, Guoping

    2017-10-18

    Controlling the differentiation of human mesenchymal stem cells (hMSCs) shows a great potential in regenerative medicine. Because overproduced reactive oxygen species (ROS) have an obvious inhibitory effect on the differentiation and functions of hMSCs, it is highly desirable to develop an effective strategy for ROS scavenging and stem cell differentiation controlling. In this study, gold nanoparticles (Au NPs) with an average size of 40 nm were conjugated with 2,2,6,6-tetramethylpiperidine-N-oxyl (TEMPO) to endow them with ROS-scavenging capacity while holding the beneficial effect of Au NPs. The TEMPO-conjugated Au NPs (Au-PEG-TEMPO NPs) were used for the culture of hMSCs to investigate their effect on ROS scavenging, proliferation, and osteogenic and adipogenic differentiation of hMSCs. The Au-PEG-TEMPO NPs had a negligible influence on cell viability and proliferation of hMSCs and could effectively reduce the ROS level of hMSCs under H2O2-exposed conditions because of their excellent cellular uptake. Similar to the counterparts without surface TEMPO modification (Au-mPEG NPs), the Au-PEG-TEMPO NPs could promote the osteogenic differentiation of hMSCs, whereas they could inhibit the adipogenic differentiation of hMSCs. The results indicated that the TEMPO-conjugated Au NPs had high scavenging capacity for overproduced ROS and maintained the promotive effect of Au NPs on osteogenic differentiation of hMSCs without the inhibitory effect of free TEMPO. This study offers a promising strategy for ROS scavenging to control stem cell differentiation in stem cell transplantation and regenerative medicine.

  18. Subscale Water Based Phase Change Material Heat Exchanger Development

    Science.gov (United States)

    Sheth, Rubik; Hansen, Scott

    2016-01-01

    Supplemental heat rejection devices are required in many spacecraft as the radiators are not sized to meet the full heat rejection demand. One means of obtaining additional heat rejection is through the use of phase change material heat exchangers (PCM HX's). PCM HX's utilize phase change to store energy in unfavorable thermal environments (melting) and reject the energy in favorable environments (freezing). Traditionally, wax has been used as a PCM on spacecraft. However, water is an attractive alternative because it is capable of storing about 40% more energy per unit mass due to its higher latent heat of fusion. The significant problem in using water as a PCM is its expansion while freezing, leading to structural integrity concerns when housed in an enclosed heat exchanger volume. Significant investigation and development has taken place over the past five years to understand and overcome the problems associated with water PCM HX's. This paper reports on the final efforts by Johnson Space Center's Thermal Systems Branch to develop a water based PCM HX. The test article developed and reported on is a subscale version of the full-scale water-based PCM HX's constructed by Mezzo Technologies. The subscale unit was designed by applying prior research on freeze front propagation and previous full-scale water PCM HX development. Design modifications to the subscale unit included use of urethane bladder, decreased aspect ratio, perforated protection sheet, and use of additional mid-plates. Testing of the subscale unit was successful and 150 cycles were completed without fail.

  19. Role of tempo entrainment in psychophysiological differentiation of happy and sad music?

    Science.gov (United States)

    Khalfa, Stéphanie; Roy, Mathieu; Rainville, Pierre; Dalla Bella, Simone; Peretz, Isabelle

    2008-04-01

    Respiration rate allows to differentiate between happy and sad excerpts which may be attributable to entrainment of respiration to the rhythm or the tempo rather than to emotions [Etzel, J.A., Johnsen, E.L., Dickerson, J., Tranel, D., Adolphs, R., 2006. Cardiovascular and respiratory responses during musical mood induction. Int. J. Psychophysiol. 61(1), 57-69]. In order to test for this hypothesis, this study intended to verify whether fast and slow rhythm, and/or tempo alone are sufficient to induce differential physiological effects. Psychophysiological responses (electrodermal responses, facial muscles activity, blood pressure, heart and respiration rate) were then measured in fifty young adults listening to fast/happy and slow/sad music, and to two control versions of these excerpts created by removing pitch variations (rhythmic version) and both pitch and temporal variations (beat-alone). The results indicate that happy and sad music are significantly differentiated (happy>sad) by diastolic blood pressure, electrodermal activity, and zygomatic activity, while the fast and slow rhythmic and tempo control versions did not elicit such differentiations. In contrast, respiration rate was faster with stimuli presented at fast tempi relative to slow stimuli in the beat-alone condition. It was thus demonstrated that the psychophysiological happy/sad distinction requires the tonal variations and cannot be explained solely by entrainment to tempo and rhythm. The tempo entrainment exists in the tempo alone condition but our results suggest this effect may disappear when embedded in music or with rhythm.

  20. Mackenzie River Delta morphological change based on Landsat time series

    Science.gov (United States)

    Vesakoski, Jenni-Mari; Alho, Petteri; Gustafsson, David; Arheimer, Berit; Isberg, Kristina

    2015-04-01

    Arctic rivers are sensitive and yet quite unexplored river systems to which the climate change will impact on. Research has not focused in detail on the fluvial geomorphology of the Arctic rivers mainly due to the remoteness and wideness of the watersheds, problems with data availability and difficult accessibility. Nowadays wide collaborative spatial databases in hydrology as well as extensive remote sensing datasets over the Arctic are available and they enable improved investigation of the Arctic watersheds. Thereby, it is also important to develop and improve methods that enable detecting the fluvio-morphological processes based on the available data. Furthermore, it is essential to reconstruct and improve the understanding of the past fluvial processes in order to better understand prevailing and future fluvial processes. In this study we sum up the fluvial geomorphological change in the Mackenzie River Delta during the last ~30 years. The Mackenzie River Delta (~13 000 km2) is situated in the North Western Territories, Canada where the Mackenzie River enters to the Beaufort Sea, Arctic Ocean near the city of Inuvik. Mackenzie River Delta is lake-rich, productive ecosystem and ecologically sensitive environment. Research objective is achieved through two sub-objectives: 1) Interpretation of the deltaic river channel planform change by applying Landsat time series. 2) Definition of the variables that have impacted the most on detected changes by applying statistics and long hydrological time series derived from Arctic-HYPE model (HYdrologic Predictions for Environment) developed by Swedish Meteorological and Hydrological Institute. According to our satellite interpretation, field observations and statistical analyses, notable spatio-temporal changes have occurred in the morphology of the river channel and delta during the past 30 years. For example, the channels have been developing in braiding and sinuosity. In addition, various linkages between the studied

  1. Os espaços/tempos da pesquisa sobre o professor The spaces/times of the research on teachers

    Directory of Open Access Journals (Sweden)

    Janete Magalhães Carvalho

    2002-07-01

    Full Text Available Analisa como a questão do professor se apresenta na produção científica brasileira. Toma como base o discurso apresentado na SBPC, por, entre outros fatores, ser originário de entidade que congrega cientistas de todas as áreas de conhecimento e ser representativo da produção docente e discente de graduação e pós-graduação das várias regiões e instituições do país. Usa como metodologia a abordagem histórico-documental. Utiliza como fontes os resumos publicados nos anais de 2001 e da década de 1980. Os resultados evidenciam: 1 um aumento extraordinário do número de trabalhos sobre o professor, a permanência da origem institucional (universidade pública e territorial (Sudeste; 2 alteração do predomínio do enfoque temático, da formação do professor, em nível superior e médio, para a prática pedagógica exercida no cotidiano escolar do ensino fundamental; 3 alteração no enfoque metodológico, passando dos estudos exploratório-descritivos para a pesquisa-ação crítica voltada para a intervenção no cotidiano escolar do ensino fundamental. Conclui pela negação dos espaços/tempos da produção científica sobre o professor, visto que os espaços/tempos são ações de sujeitos históricos, que exibem operações de troca, intercâmbios, compartilhamentos coletivos e não a determinação do "lugar próprio" do pesquisador e/ou da "autoria marcada". Os discursos expressos pareceram, cada um, ocupar um "lugar próprio" e isolado, não permitindo a sua acepção como conjunto da obra sobre a questão do professor, não se vislumbrando uma tessitura temática coletiva, com gênese nos espaços/tempos da academia em sua relação com a realidade educacional e social do Brasil.The article analyzes how the issue of the teacher appears in the Brazilian scientific literature. It is based on the discourse found at the Brazilian Society for the Progress of Science (SBPC Meetings, a society that congregates scientists from

  2. O terror e o abismo: experiências do tempo histórico em Foucault e Koselleck

    Directory of Open Access Journals (Sweden)

    Marcus Vinícius Furtado da Silva Oliveira

    2014-12-01

    Full Text Available Esse trabalho procura problematizar os usos historiográficos das análises do historiador alemão Reinhardt Koselleck e do filósofo francês Michel Foucault. Para tanto, fixaremos uma análise que elucida as experiências de tempo histórico que subjazem às propostas historiográficas de ambos os autores. Com isso, pretendemos apontar que a história dos conceitos de Koselleck se baseia em uma experiência de terro do tempo histórico, que o força a construir uma estratégia de evasão do tempo histórico, que impede maior historicização dos fenômenos históricos; ao passo em que a arqueologia de Foucault escapa à esse terror, radicalizando a historicização dos fenômenos históricos, considerando-os a partir de uma perspectiva temporal descontínua.   This paper aims to analyze the historiographical uses of the German historian Reinhardt Koselleck and the French philosopher Michel Foucault. To achieve our objectives, we propose an analyze that clarifies the time experiences that are hold inside their historiographical proposes. Therefore, we aim to point that Koselleck’s Concepts History is based in a terror experience of the historical time, which forces him to build an avoiding strategy of historical time, that obstructs a higher historicization of the historical phenomena; meanwhile, Foucault’s archeology escapes from this terror, radicalizing the historicization of the historical phenomena, considering it from a discontinue perspective of time.

  3. Sul ‘Prometeo incatenato’. Tragedia dello sguardo e anatomie del tempo: considerazioni di regia

    Directory of Open Access Journals (Sweden)

    Claudio Longhi

    2014-12-01

    Full Text Available The essay aims at showing the development of the critical thought about Prometheus Bound that underlied the staging of this tragedy at the Teatro Greco of Siracusa during the spring of 2012. The performance was directed by the author of these pages for the Istituto nazionale del dramma antico (premiere: Siracusa, 11th May. In the framework of a hermeneutic paradigm based on the ‘critically’ untimely nature of the classic, the staging of Prometheus here discussed wanted to inquire the role of sight in the orchestration of this tragedy, as well as to account for the way time is treated in the text. In the light of this approach, Prometheus looks like a cruel portrait of a world in a state of crisis, suspended between two disasters (one has just ended, the other is looming ominously on the horizon; from its remote distance, such a world gives us an image both lucid and alienated of our present.Il saggio si propone di restituire il percorso di riflessione critica intorno al Prometeo incatenato che nella primavera del 2012 ha sostanziato il processo di messa in scena della tragedia presso il teatro greco di Siracusa, curata dall’autore di queste pagine per conto dell’Istituto nazionale del dramma antico (debutto: Siracusa, 11 maggio. Entro un paradigma ermeneutico fondato sul principio dell’inattualità ‘critica’ del classico, l’allestimento del Prometeo di cui qui si riferisce punta a indagare il ruolo svolto dallo sguardo nell’orchestrazione della tragedia, così come a render ragione del trattamento cui la funzione tempo è sottoposta nell’opera. Sulla base di un simile approccio, il Prometeo appare così come un crudele ritratto di un mondo in crisi sospeso tra due catastrofi (l’una appena trascorsa, l’altra minacciosamente incombente all’orizzonte; un mondo che dalla sua remota distanza ci consegna un’immagine ad un tempo lucida e straniata del nostro presente.

  4. Changes in Urban Climate due to Future Land-Use Changes based on Population Changes in the Nagoya Region

    Science.gov (United States)

    Adachi, S. A.; Hara, M.; Takahashi, H. G.; Ma, X.; Yoshikane, T.; Kimura, F.

    2013-12-01

    Severe hot weather in summer season becomes a big social problem in metropolitan areas, including the Nagoya region in Japan. Surface air temperature warming is projected in the future. Therefore, the reduction of surface air temperature is an urgent issue in the urban area. Although there are several studies dealing with the effects of global climate change and urbanization to the local climate in the future, these studies tend to ignore the future population changes. This study estimates future land-use scenarios associated with the multi-projections of future population and investigates the impacts of these scenarios on the surface temperature change. The Weather Research and Forecast model ver. 3.3.1 (hereafter, WRF) was used in this study. The horizontal resolutions were 20km, 4km, and 2km, for outer, middle, and inner domains, respectively. The results from the inner domain, covering the Nagoya region, were used for the analysis. The Noah land surface model and the single-layer urban canopy model were applied to calculate the land surface processes and urban surface processes, respectively. The initial and boundary conditions were given from the NCEP/NCAR reanalysis data in August 2010. The urban area ratio used in the WRF model was calculated from the future land-use data provided by the S8 project. The land-use data was created as follows. (1) Three scenarios of population, namely, with high-fertility assumption and low-mortality assumption (POP-high), with medium-fertility assumption and medium-mortality assumption (POP-med), and with low-fertility assumption and high-mortality assumption (POP-low), are estimated using the method proposed by Ariga and Matsuhashi (2012). These scenarios are based on the future projections provided by the National Institute of Population and Social Security Research. (2) The future changes in urban area ratio were assumed to be proportional to the population change (Hanasaki et al., 2012). The averaged urban area ratio in

  5. Timing and Tempo of Early and Successive Adaptive Radiations in Macaronesia

    Science.gov (United States)

    Kim, Seung-Chul; McGowen, Michael R.; Lubinsky, Pesach; Barber, Janet C.; Mort, Mark E.; Santos-Guerra, Arnoldo

    2008-01-01

    The flora of Macaronesia, which encompasses five Atlantic archipelagos (Azores, Canaries, Madeira, Cape Verde, and Salvage), is exceptionally rich and diverse. Spectacular radiation of numerous endemic plant groups has made the Macaronesian islands an outstanding area for studies of evolution and speciation. Despite intensive investigation in the last 15 years, absolute age and rate of diversification are poorly known for the flora of Macaronesia. Here we report molecular divergence estimates and rates of diversification for five representative, putative rapid radiations of monophyletic endemic plant lineages across the core eudicot clade of flowering plants. Three discrete windows of colonization during the Miocene and early Pliocene are suggested for these lineages, all of which are inferred to have had a single colonization event followed by rapid radiation. Subsequent inter-archipelago dispersal events into Madeira and the Cape Verdes took place very recently during the late Pliocene and Pleistocene after initial diversification on the Canary Islands. The tempo of adaptive radiations differs among the groups, but is relatively rapid compared to continental and other island radiations. Our results demonstrate that opportunity for island colonization and successful radiation may have been constrained to discrete time periods of profound climatic and geological changes in northern African and the Mediterranean. PMID:18478126

  6. Effect of the addition of two superoxide dismutase analogues (Tempo and Tempol) to alpaca semen extender for cryopreservation.

    Science.gov (United States)

    Santiani, Alexei; Acosta, Alexei Santiani; Evangelista, Shirley; Vargas, Shirley Evangelista; Valdivia, Martha; Cuya, Martha Valdivia; Risopatrón, Jennie; González, Jennie Risopatrón; Sánchez, Raúl; Gutiérrez, Raúl Sánchez

    2013-03-15

    The main objective was to study the effects, on sperm function, of the addition of two superoxide dismutase (SOD) analogues (Tempo and Tempol) to alpaca semen extender for cryopreservation. Twelve alpaca semen samples were collected using an artificial vagina and then diluted at a 1:3 ratio in an extender based on skim milk, egg yolk, and fructose. Each semen sample was divided into three equal parts to form the following groups: control, Tempo (1 mM), and Tempol (1 mM). Groups were cooled to 5 °C in 90 minutes (-1 °C in 3 minutes); when samples reached approximately 10 °C, SOD analogues were added to the respective groups. At 5 °C, ethylene glycol (final concentration, 0.1 M) was added to each group. After 30 minutes at 5 °C, samples were loaded in 0.25 mL plastic straws, placed in liquid nitrogen vapor for 15 minutes, and then plunged. Percentages of sperm motility, functional sperm membrane integrity, and viable sperm with intact acrosomes were evaluated before and after freeze-thaw using visual analysis, the hypoosmotic swelling test, and the double-stain trypan blue/giemsa technique, respectively. The Terminal deoxymucleotidyl transferase dUTP Nick End Labeling assay was performed for evaluation of sperm DNA fragmentation of frozen-thawed sperm. Sperm motility was higher (P < 0.05) in the Tempol and Tempo groups than in the control group (mean, 22.1%, 19.7%, and 11.2%, respectively), with similar results for functional sperm membrane integrity. Additionally, DNA fragmentation was lower (P < 0.05) in the Tempol group (16.7%) than in the control group (38.8%). Viable sperm with intact acrosomes were not affected by the use of SOD analogues. There was a negative correlation (r = -0.58) between DNA fragmentation of alpaca sperm and sperm motility after freeze-thawing, but DNA damage was neither related to functional membrane integrity nor viable sperm with intact acrosomes. We concluded that DNA fragmentation and loss of motility during cryopreservation of

  7. Control of size and viscoelastic properties of nanofibrillated cellulose from palm tree by varying the TEMPO-mediated oxidation time.

    Science.gov (United States)

    Benhamou, Karima; Dufresne, Alain; Magnin, Albert; Mortha, Gérard; Kaddami, Hamid

    2014-01-01

    The main objective of the present study was to control and optimize the preparation of nanofibrillated cellulose (NFC) from the date palm tree by monitoring the oxidation time (degree of oxidation) of the pristine cellulose and the number of cycles through the homogenizer. The oxidation was monitored by TEMPO (1-oxo-2,2,6,6-tétraméthylpipyridine 1-oxyle) mediated oxidation. Evidence of the successful isolation of NFC was given by FE-SEM observation revealing fibrils with a width in the range 20-30nm, depending of the oxidation time. The evolution of the transparency of the aqueous NFC suspension and carboxylic content according to the degree of oxidation and number of cycles were also analyzed by UV-vis transmittance, Fourier-transform infrared spectroscopy (FT-IR), conductimetry, and X-ray diffraction analysis. A significant NFC length reduction occurred during the TEMPO-mediated oxidation. The rheological properties of NFC suspensions were characterized as function of the oxidation time. Dynamic rheology showed that the aqueous suspension behavior changed from liquid to gel depending on the concentration. The highest concentration studied was 1wt% and the modulus reached 1MPa which was higher than for non-oxidized NFC. An explanation of the gel structure evolution with the oxidation time applied to the NFC (NFC length) was proposed. The gel structure evolves from an entanglement-governed gel structure to an immobilized water molecule-governed one. Copyright © 2013 Elsevier Ltd. All rights reserved.

  8. Community-based adaptation to climate change: an update

    Energy Technology Data Exchange (ETDEWEB)

    Ayers, Jessica; Huq, Saleemul

    2009-06-15

    Over a billion people - the world's poorest and most bulnerable communities – will bear the brunt of climate change. For them, building local capacity to cope is a vital step towards resilience. Community-based adaptation (CBA) is emerging as a key response to this challenge. Tailored to local cultures and conditions, CBA supports and builds on autonomous adaptations to climate variability, such as the traditional baira or floating gardens of Bangladesh, which help small farmers' crops survive climate-driven floods. Above all, CBA is participatory – a process involving both local stakeholders, and development and disaster risk reduction practitioners. As such, it builds on existing cultural norms while addressing local development issues that contribute to climate vulnerability. CBA is now gaining ground in many regions, and is ripe for the reassessment offered here.

  9. Fatigue crack identification method based on strain amplitude changing

    Science.gov (United States)

    Guo, Tiancai; Gao, Jun; Wang, Yonghong; Xu, Youliang

    2017-09-01

    Aiming at the difficulties in identifying the location and time of crack initiation in the castings of helicopter transmission system during fatigue tests, by introducing the classification diagnostic criteria of similar failure mode to find out the similarity of fatigue crack initiation among castings, an engineering method and quantitative criterion for detecting fatigue cracks based on strain amplitude changing is proposed. This method is applied on the fatigue test of a gearbox housing, whose results indicates: during the fatigue test, the system alarms when SC strain meter reaches the quantitative criterion. The afterwards check shows that a fatigue crack less than 5mm is found at the corresponding location of SC strain meter. The test result proves that the method can provide accurate test data for strength life analysis.

  10. Changing the Environment Based on Empowerment as Intrinsic Motivation

    Directory of Open Access Journals (Sweden)

    Christoph Salge

    2014-05-01

    Full Text Available One aspect of intelligence is the ability to restructure your own environment so that the world you live in becomes more beneficial to you. In this paper we investigate how the information-theoretic measure of agent empowerment can provide a task-independent, intrinsic motivation to restructure the world. We show how changes in embodiment and in the environment change the resulting behaviour of the agent and the artefacts left in the world. For this purpose, we introduce an approximation of the established empowerment formalism based on sparse sampling, which is simpler and significantly faster to compute for deterministic dynamics. Sparse sampling also introduces a degree of randomness into the decision making process, which turns out to beneficial for some cases. We then utilize the measure to generate agent behaviour for different agent embodiments in a Minecraft-inspired three dimensional block world. The paradigmatic results demonstrate that empowerment can be used as a suitable generic intrinsic motivation to not only generate actions in given static environments, as shown in the past, but also to modify existing environmental conditions. In doing so, the emerging strategies to modify an agent’s environment turn out to be meaningful to the specific agent capabilities, i.e., de facto to its embodiment.

  11. Method of change management based on dynamic machining error propagation

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    In multistage machining processes(MMPs),the final quality of a part is influenced by a series of machining processes,which are complex correlations.So it is necessary to research the rule of machin-ing error propagation to ensure the machining quality.For this issue,a change management method of quality control nodes(i.e.,QC-nodes) for machining error propagation is proposed.A new framework of QC-nodes is proposed including association analysis of quality attributes,quality closed-loop control,error tracing and error coordination optimization.And the weighted directed network is introduced to describe and analyze the correlativity among the machining processes.In order to establish the dynamic machining error propagation network(D-MEPN),QC-nodes are defined as the network nodes,and the correlation among the QC-nodes is mapped onto the network.Based on the network analysis,the dynamic characteristics of machining error propagation are explored.An adaptive control method based on the stability theory is introduced for error coordination optimization.At last,a simple example is used to verify the proposed method.

  12. Changing Histopathological Diagnostics by Genome-Based Tumor Classification

    Directory of Open Access Journals (Sweden)

    Michael Kloth

    2014-05-01

    Full Text Available Traditionally, tumors are classified by histopathological criteria, i.e., based on their specific morphological appearances. Consequently, current therapeutic decisions in oncology are strongly influenced by histology rather than underlying molecular or genomic aberrations. The increase of information on molecular changes however, enabled by the Human Genome Project and the International Cancer Genome Consortium as well as the manifold advances in molecular biology and high-throughput sequencing techniques, inaugurated the integration of genomic information into disease classification. Furthermore, in some cases it became evident that former classifications needed major revision and adaption. Such adaptations are often required by understanding the pathogenesis of a disease from a specific molecular alteration, using this molecular driver for targeted and highly effective therapies. Altogether, reclassifications should lead to higher information content of the underlying diagnoses, reflecting their molecular pathogenesis and resulting in optimized and individual therapeutic decisions. The objective of this article is to summarize some particularly important examples of genome-based classification approaches and associated therapeutic concepts. In addition to reviewing disease specific markers, we focus on potentially therapeutic or predictive markers and the relevance of molecular diagnostics in disease monitoring.

  13. Changing histopathological diagnostics by genome-based tumor classification.

    Science.gov (United States)

    Kloth, Michael; Buettner, Reinhard

    2014-05-28

    Traditionally, tumors are classified by histopathological criteria, i.e., based on their specific morphological appearances. Consequently, current therapeutic decisions in oncology are strongly influenced by histology rather than underlying molecular or genomic aberrations. The increase of information on molecular changes however, enabled by the Human Genome Project and the International Cancer Genome Consortium as well as the manifold advances in molecular biology and high-throughput sequencing techniques, inaugurated the integration of genomic information into disease classification. Furthermore, in some cases it became evident that former classifications needed major revision and adaption. Such adaptations are often required by understanding the pathogenesis of a disease from a specific molecular alteration, using this molecular driver for targeted and highly effective therapies. Altogether, reclassifications should lead to higher information content of the underlying diagnoses, reflecting their molecular pathogenesis and resulting in optimized and individual therapeutic decisions. The objective of this article is to summarize some particularly important examples of genome-based classification approaches and associated therapeutic concepts. In addition to reviewing disease specific markers, we focus on potentially therapeutic or predictive markers and the relevance of molecular diagnostics in disease monitoring.

  14. TEMPO: a contemporary model for police education and training about mental illness.

    Science.gov (United States)

    Coleman, Terry; Cotton, Dorothy

    2014-01-01

    Given the increasing number of interactions between police and people with mental illnesses (PMI), there has been widespread interest in the development of education for police about how best to interact with PMI. This paper reflects the review of current practice in a variety of jurisdictions across Canada as well as in the United States (U.S.), the United Kingdom (U.K.) and Australia; it proposes a comprehensive model of learning based on the literature that addresses not only the content in the narrow sense but also the importance of broader contextual knowledge and understanding in developing effective education and training. Embedded in the principles articulated in the Mental Health Strategy for Canada, the TEMPO (Training and Education about Mental illness for Police Organizations) model is a multilevel learning strategy for Canadian police personnel. Learning objectives and key principles are articulated in order to ensure the model is applicable to a wide range of police agencies and individual jurisdictional needs. In addition to providing a firm basis of factual knowledge for police personnel, the resultant model embraces a human rights/anti-stigma philosophy, provides for a range of education appropriate to diverse police audiences, emphasizes a systems approach to police/mental health liaison activities and addresses issues related to the delivery and implementation of police education and training. Copyright © 2014. Published by Elsevier Ltd.

  15. I nomi del tempo la seconda rivoluzione scientifica e il mito della freccia temporale

    CERN Document Server

    Bellone, Enrico

    1989-01-01

    Ogni persona colloca i fatti ordinandoli lungo una freccia psicologica del tempo e così distingue tra il passato e il futuro. La distinzione è netta, poiché i fatti disposti nel passato non sono modificabili, mentre quelli che si verificheranno sono, in linea di massima, solo prevedibili: non possiamo esercitare alcuna influenza sugli eventi passati, ma possiamo nutrire la speranza di condizionare, almeno in parte, quelli che non si sono ancora verificati. La questione della freccia psicologica è collegata alla circostanza per cui l'individuo ha coscienza d'essere sempre situato in un «qui e ora», così da ricordare solo certi fatti del passato e da non avere alcuna memoria del futuro. Questo stato di cose, pur manifestandosi in modo del tutto naturale, presenta però analogie con quel particolare stato di cose grazie al quale ciascuno di noi parla di oggetti che si trovano «in alto» o «in basso», sulla base di una distinzione che non è poi dissimile da quella che riguarda il «prima» e il «dopo�...

  16. Rancang Bangun Aplikasi MusicMoo dengan Metode MIR (Music Information Retrieval pada Modul Mood, Genre Recognition, dan Tempo Estimation

    Directory of Open Access Journals (Sweden)

    Johanes Andre Ridoean

    2017-03-01

    Full Text Available Saat ini, metode pemanggilan kembali informasi suatu musik atau yang sering disebut Music Information Retrieval (MIR telah banyak diterapkan. Contohnya pada suatu aplikasi Shazam ataupun SounHound. Kedua aplikasi ini hanya menangani sebatas suatu lagu berjudul apakah ketika diperdengarkan. Untuk itu, tujuan penelitian ini adalah pengembangan lebih lanjut MIR yang lebih spesifik lagi, yaitu melakukan pemanggilan informasi lagu yang terkait kembali beserta detail lagu di antaranya adalah mood, genre, dan tempo lagu. Penelitian ini memakai ekstraksi fitur berbasis MPEG-7 yang oleh library Java bernama MPEG7AudioEnc. Hasil ekstraksi fitur ini berupa metadata dalam bentuk angka digital yang merepresentasikan karakteristik suatu sinyal pada tiap fiturnya. Setelah fitur didapatkan, tahap berikutnya adalah melakukan pengambilan suatu fitur sesuai dengan masing-masing modul dengan metode Xquery yang diimplementasikan oleh library Java bernama BaseX. Fitur yang diambil dipakai untuk proses pengolahan dengan Discrete Wavelet Transform (DWT beserta level dekomposisi terbaik oleh library Python bernama Pywt. Setelah fitur-fitur diproses, maka dilakukan penggabungan fitur pada suatu list beserta penyamaan panjang fitur untuk proses klasifikasi. Tahap terakhir adalah melakukan klasifikasi dengan menggunakan Support Vector Machine (SVM. Terdiri dari 2 tahap yaitu tahap training dan prediksi. Hasil akurasi keberhasilan pada penelitian ini untuk modul mood 75%, genre 87,5% dan tempo 80%.

  17. Rancang Bangun Aplikasi MusicMoo Dengan Metode MIR (Music Information Retrieval Pada Modul Mood, Genre Recognition, dan Tempo Estimation

    Directory of Open Access Journals (Sweden)

    Johanes Andre Ridoean

    2017-03-01

    Full Text Available Saat ini,metode pemanggilan kembali informasi suatu musik atau yang sering disebut Music Information Retrieval (MIR telah banyak diterapkan. Contohnya adalah pada suatu aplikasi Shazam ataupun Soundhound. Tetapi kedua aplikasi ini hanya menangani sebatas lagu apakah yang terkait ketika diperdengarkan. Untuk itu, tujuan penelitian ini adalah pengembangan lebih lanjut MIR yang lebih spesifik lagi, yaitu melakukan pemanggilan informasi lagu yang terkait kembali beserta detail lagu di antaranya adalah mood, genre, dan tempo lagu. Penelitian ini memakai ekstraksi fitur berbasis MPEG-7 yang oleh library Java bernama MPEG7AudioEnc. Hasil ekstraksi fiur ini berupa metadata yang terkandung fitur-fitur dalam bentuk angka digital yang merepresentasikan karakteristik suatu sinyal. Lalu melakukan pengambilan suatu fitur sesuai dengan masing-masing dengan metode Xquery yang diimplementasikan oleh library Java bernama BaseX. Fitur yang diambil akan diproses dengan melakukan Discrete Wavelet Transform (DWT beserta level dekomposisi terbaik oleh library Python bernama Pywt. Setelah fitur-fitur dilakukan DWT, maka dilakukan penggabungan fitur pada suatu list beserta penyamaan panjang fitur untuk proses klasifikasi. Tahap terakhir adalah melakukan klasifikasi dengan menggunakan Support Vector Machine (SVM. Terdiri dari 2 tahap yaitu tahap training dan prediksi. Hasil akurasi keberhasilan pada penelitian ini untuk modul mood 75%, genre 87,5% dan tempo 80%.

  18. O problema de caminho mínimo com incertezas e restrições de tempo

    Directory of Open Access Journals (Sweden)

    Fábio Hernandes

    2009-08-01

    Full Text Available O problema de caminho mínimo em grafos com parâmetros incertos é um importante problema da programação matemática, visto que possui aplicações nas mais diversas áreas da Computação e da Engenharia, como: redes de computadores, telecomunicações, transportes, manufaturas, dentre outros. Porém, devido à sua alta complexidade computacional, poucos são os algoritmos existentes na literatura. Neste trabalho é proposto um algoritmo, baseado no algoritmo de Okada & Soper, que utiliza dois parâmetros incertos nos arcos, custo e tempo, com restrições de tempo nos nós. As incertezas são abordadas utilizando a teoria dos conjuntos fuzzy.The shortest path problem in graphs with uncertainties in the parameters is an important problem in the mathematical programming, since it has a wide range of applications in different areas of Computation and Engineering, such as: computer networks, telecommunications, transportation, manufacturing, etc. However, due to its high computational complexity, there are few algorithms in the literature. In this paper is proposed an algorithm, based on Okada and Soper algorithm, which uses two uncertainty parameters, cost and time, with time restrictions in the nodes. The uncertainties are discussed using the fuzzy set theory.

  19. O bem-estar pessoal dos adolescentes através do seu tempo livre

    Directory of Open Access Journals (Sweden)

    Jorge Castellá Sarriera

    2013-06-01

    Full Text Available Esse estudo investiga possíveis relações entre satisfação com atividades de tempo livre e percepção do uso desse tempo (organização, quantidade, aproveitamento e o bem-estar pessoal de 1588 adolescentes do Rio Grade do Sul entre 12 e 16 anos (M = 14,13; DP = 1,26. Foi utilizado o Personal Wellbeing Index (PWI e dois questionários que avaliam satisfação com atividades de tempo livre e percepção sobre o seu uso. Atividades que envolvem interação social e desenvolvimento de habilidades físicas e intelectuais são preditoras de bemestar. O mesmo não ocorre com atividades relacionadas à música, internet, celular e videogames. A percepção de boa organização e aproveitamento do tempo livre também se associa ao bem-estar. Análises secundárias mostram diferenças de gênero, faixa etária e instituição onde estuda em relação às variáveis investigadas. Discutem-se as características das atividades de tempo livre promotoras de bem-estar e a importância da autonomia e do controle dos adolescentes sobre as atividades que realizam.

  20. INFLUENCIA DEL TEMPO DE LA MÚSICA EN LAS EMOCIONES

    Directory of Open Access Journals (Sweden)

    Jonathan Azael Caballero-Meneses

    2010-01-01

    Full Text Available Se sabe que la música puede influir en dos componentes de lasemociones: el arousal y la valencia. En particular, se ha reportadoque el tempo o rapidez de la música está directamenterelacionado con el arousal, aunque su relación con la valenciao medida de afecto no es aún clara. En este trabajo se analizóla influencia del tempo en ambos componentes mediante laexposición de 24 estudiantes de licenciatura a treinta extractosmusicales de distinto tempo. Además se evaluó la posiblemodulación de la relación tempo-valencia por el rasgo de personalidadextroversión/introversión. Los resultados confirmaronla influencia del tempo sobre el arousal, pero no sobrela valencia, así como una posible mediación de la dimensiónde personalidad introversión-extroversión sobre la valencia.

  1. Visualizing the Past: The Design of a Temporally Enabled Map for Presentation (TEMPO

    Directory of Open Access Journals (Sweden)

    Nathan Prestopnik

    2012-01-01

    Full Text Available We present a design case for a prototype visualization tool called the Temporally Enabled Map for Presentation (TEMPO. Designed for use in the lecture classroom, TEMPO is an interactive animated map that addressed a common problem in military history: the shortcomings of traditional static (non-interactive, non-animated maps. Static maps show spatial elements well, but cannot do more than approximate temporal events using multiple views, movement arrows, and the like. TEMPO provides a more complete view of past historical events by showing them from start to finish. In our design case we describe our development process, which included consultation with military history domain experts, classroom observations, application of techniques derived from visualization and Human-Computer Interaction (HCI literature and theory. Our design case shows how the design of an educational tool can motivate scholarly evaluation, and we describe how some theories were first embraced and then rejected as design circumstances required. Finally, we explore a future direction for TEMPO, tools to support creative interactions with visualizations where students or instructors can learn by visualizing historical events for themselves. A working version of the finished TEMPO artifact is included as an interactive element in this document.

  2. The appropriate or optimal tempo for music: a comparison between non-musicians and musicians.

    Science.gov (United States)

    Quinn, Sandra; Watt, Roger

    2013-01-01

    Musicians have enhanced skills that result from intensive training. Whilst musicians show enhanced auditory capabilities (Kraus and Chandrasekaran, 2010 Nature Reviews Neuroscience 11 599-605), non-musicians demonstrate an ability to perform musical tasks (eg listening, dancing, and singing). Non-musicians can also undertake tasks that would normally be reserved for musicians. For example, non-musicians can perceive optimal tempi (ie an appropriate speed) for music (Quinn and Watt, 2006 Perception 35 267-280; Quinn and Watt, 2012 Perception 41 236-238; Quinn et al, 2012 Journal of the Acoustical Society of America 131 3595-3598). This suggests that formalised musical training is not a prerequisite for developing a sense of the tempo that sounds right for a melody. The current studies examine this issue and compare the tempo that musicians choose to perform unfamiliar melodies with the tempo that non-musicians perceive to be optimal for the same melodies. The results demonstrate that the perceived optimal tempo is similar to the performed tempo.

  3. Tempo/Energia nel pensiero musicale del Novecento

    Directory of Open Access Journals (Sweden)

    Angelo Orcalli

    2014-02-01

    Full Text Available During the twentieth century the relationship between music and machines has become increasingly broad and complicated. Composers and musicians are now working within a complex setting of electronic, optic, and acoustic equipment, which results from the original combination between technological research and artistic experimentation. These artifacts are «materialized theories» of sound, because their construction is the concrete result of a specific interpretation of sound and audio, which contributes to determining the horizon of possible manifestations of musical thinking at any given time. They allow us to generate processes which make it possible to amalgamate different representations and effects, organizing the simultaneous presence and live interaction of heterogeneous devices for sound production and control. As a consequence, music materials can no longer be seen as the set of natural and intuitive elements internally processed by an artist. Contemporary musicians, on the contrary, are used to continuously shifting from the symbolic forms of notation for voice and acoustic instruments to electronic sound synthesis, from orchestral practice registers to live interaction using a computer. As part of these processes, action continuously reviews its operating patterns based on a recording of the effects on its performance. Therefore, the universe of the composition is not at all foreordained, but saturated with contingencies; the relationship between the system and its surrounding reality is not established a priori, because changes are based on the analysis of immediate effects. Thus, the preordination dictated by «musical logic» gives way to approximate calculation. For this reason we should acknowledge that the complexity of contemporary media leaves no room for purely textual approaches; on the contrary, in order to understand it, new conceptual tools are called for, to the extent that the equipment used for musical creation is

  4. LEADING CHANGES IN ASSESSMENT USING AN EVIDENCE BASED APPROACH

    Directory of Open Access Journals (Sweden)

    J. O. Macaulay

    2015-08-01

    Full Text Available Introduction and objectivesIt is has been widely accepted that assessment of learning is a critical component of education and that assessment drives/guides student learning through shaping study habits and student approaches to learning. However, although most academics would agree that assessment is a critical aspect of their roles as teachers it is often an aspect of teaching that is regarded more as an additional task rather than an integral component of the teaching/learning continuum. An additional impediment to high quality assessment is the non-evidence based-approach to the decision making process. The overall aim of this project was to improve the quality of assessment in Biochemistry and Molecular Biology undergraduate education by promoting high quality assessment.Materials and methodsTo do this we developed and trialled an audit tool for mapping assessment practices. The audit tool was designed to gather data on current assessment practices and identify areas of good practice in which assessment aligned with the learning objectives and areas in need of improvement. This evidence base will then be used to drive change in assessment.Results and conclusionsUsing the assessment mapping tool we have mapped the assessment regime in a Biochemistry and Molecular Biology major at Monash University. Criteria used included: assessment type, format, timing, assessors, provision of feedback, level of learning (Bloom’s, approaches taken to planning assessment. We have mapped assessment of content and the systematic development of higher order learning and skills progression throughout the program of study. The data has enabled us to examine the assessment at unit (course level as well as the vertical development across the major. This information is now being used to inform a review of the units and the major.

  5. Changes in smoking during a community-based cardiovascular ...

    African Journals Online (AJOL)

    The effect was evaluated by examining the net change in smoking habits, which was defined as the residual change in the intervention areas after allowing for change in the reference area. This paper presents the analyses of the estimated effect of the programme on the cohort aged 15 - 64 years at baseline who ...

  6. Continued Water-Based Phase Change Material Heat Exchanger Development

    Science.gov (United States)

    Hansen, Scott W.; Sheth, Rubik B.; Poynot, Joe; Giglio, Tony; Ungar, Gene K.

    2015-01-01

    In a cyclical heat load environment such as low Lunar orbit, a spacecraft's radiators are not sized to meet the full heat rejection demands. Traditionally, a supplemental heat rejection device (SHReD) such as an evaporator or sublimator is used to act as a "topper" to meet the additional heat rejection demands. Utilizing a Phase Change Material (PCM) heat exchanger (HX) as a SHReD provides an attractive alternative to evaporators and sublimators as PCM HX's do not use a consumable, thereby leading to reduced launch mass and volume requirements. In continued pursuit of water PCM HX development two full-scale, Orion sized water-based PCM HX's were constructed by Mezzo Technologies. These HX's were designed by applying prior research on freeze front propagation to a full-scale design. Design options considered included bladder restraint and clamping mechanisms, bladder manufacturing, tube patterns, fill/drain methods, manifold dimensions, weight optimization, and midplate designs. Two units, Units A and B, were constructed and differed only in their midplate design. Both units failed multiple times during testing. This report highlights learning outcomes from these tests and are applied to a final sub-scale PCM HX which is slated to be tested on the ISS in early 2017.

  7. Patch-Based Forest Change Detection from Landsat Time Series

    Directory of Open Access Journals (Sweden)

    M. Joseph Hughes

    2017-05-01

    Full Text Available In the species-rich and structurally complex forests of the Eastern United States, disturbance events are often partial and therefore difficult to detect using remote sensing methods. Here we present a set of new algorithms, collectively called Vegetation Regeneration and Disturbance Estimates through Time (VeRDET, which employ a novel patch-based approach to detect periods of vegetation disturbance, stability, and growth from the historical Landsat image records. VeRDET generates a yearly clear-sky composite from satellite imagery, calculates a spectral vegetation index for each pixel in that composite, spatially segments the vegetation index image into patches, temporally divides the time series into differently sloped segments, and then labels those segments as disturbed, stable, or regenerating. Segmentation at both the spatial and temporal steps are performed using total variation regularization, an algorithm originally designed for signal denoising. This study explores VeRDET’s effectiveness in detecting forest change using four vegetation indices and two parameters controlling the spatial and temporal scales of segmentation within a calibration region. We then evaluate algorithm effectiveness within a 386,000 km2 area in the Eastern United States where VeRDET has overall error of 23% and omission error across disturbances ranging from 22% to 78% depending on agent.

  8. Barnaba Maj (ed., Il Gattopardo nel flusso del tempo. Il romanzo di Tomasi e il film di Visconti

    Directory of Open Access Journals (Sweden)

    Paola Fallerini

    2011-11-01

    Full Text Available Il Seminario di Teoria della Narrazione dell’Università di Bologna, organizzato e curato da Barnaba Maj, propone una analisi collettiva del romanzo di Lampedusa la cui riflessione si sofferma sul tempo interno alla narrazione e il tempo che travalica le coordinate del racconto e della collocazione storica. Il tempo si manifesta perciò come elemento pluridimensionale, all’interno del quale si impone la connotazione atemporale dello spazio mitico in stretta connessione con quello storico.

  9. Technological and Organizational Changes. Developing a management platform based on participatory institutions and practices

    DEFF Research Database (Denmark)

    Clausen, Christian

    2004-01-01

    Management Programmes aimed at organisational and technological change often run into problems when it comes to implementing change. The purpose of the papeer is to discuss the possibilities for establishing a cooperation based platform for change.......Management Programmes aimed at organisational and technological change often run into problems when it comes to implementing change. The purpose of the papeer is to discuss the possibilities for establishing a cooperation based platform for change....

  10. La percezione soggettiva del tempo. Ricerca applicata alla pedagogia del lavoro

    Directory of Open Access Journals (Sweden)

    Giuseppe Mannino

    2016-12-01

    Full Text Available Il tempo scandito dalle lancette dell’orologio, il cosiddetto “tempo oggettivo” è profondamente differente da quello percepito dall’individuo. Partendo da questa prima ipotesi, direttamente connessa con la modalità soggettiva di “vivere” il tempo, definita orizzonte temporale, si cercherà di capire quanto essa influisca sui diversi ambiti della vita delle persone, sui loro atteggiamenti e sui loro vissuti. In seconda battuta, la ricerca indaga se ogni nostra decisione può essere influenzata, al di là della nostra consapevolezza, da una o più prospettive temporali, ossia dal processo che ci permette di organizzare le nostre esperienze e i nostri vissuti in categorie temporali. Non ultimo ci occuperemo di capire se alcuni determinati orizzonti temporali in contesti specifici siano maggiormente funzionali e adattavi rispetto ad altri.

  11. The effects of music tempo and loudness level on treadmill exercise.

    Science.gov (United States)

    Edworthy, Judy; Waring, Hannah

    2006-12-15

    This study examined the effects of loudness and tempo of background music on exercise performance. A total of 30 volunteers performed five 10-min exercise sessions on a treadmill. The music listened to whilst exercising was either fast/loud, fast/quiet, slow/loud, slow/quiet or absent. Measures of running speed, heart rate, perceived exertion and affect were taken. Significant effects and interactions were found for running speed and heart rate across the different music tempo and loudness levels. More positive affect was observed during the music condition in comparison to the 'no music' condition. No significant differences for perceived exertion were found across conditions. These results confirm that fast, loud music might be played to enhance optimal exercising, and show how loudness and tempo interact.

  12. Laccase complex with polyvinylamine bearing grafted TEMPO is a cellulose adhesion primer.

    Science.gov (United States)

    Liu, Jieyi; Pelton, Robert; Obermeyer, Jaclyn M; Esser, Anton

    2013-08-12

    Polyelectrolyte complexes formed between laccase and polyvinylamine with grafted TEMPO moieties, PVAm-T, adsorb onto cellulose, causing oxidation. All evidence supports the view that aldehyde groups on oxidized cellulose condense with primary amine groups, giving a grafted layer of PVAm-T complexed with laccase. The grafted PVAm-T serves as a primer layer promoting wet cellulose-to-cellulose adhesion in the presence of PVAm adhesive. The cellulose modification occurs at ambient temperatures and pH 5. The adhesion improvements with mixtures of PVAm-T and laccase are remarkable because both components are macromolecular, which should inhibit the ability of the TEMPO to act as a shuttle between the enzyme and the primary hydroxyl groups on cellulose. It is proposed that PVAm-bound oxoammonium ions exchange with neighboring TEMPO moieties, providing a mechanism for the transfer of oxidation activity from immobilized enzyme to the cellulose surfaces.

  13. Credit-Based Systems as Vehicles for Change in Universities and Colleges. Managing Innovation and Change in Universities and Colleges.

    Science.gov (United States)

    Allen, Robert; Layer, Geoff

    This book discusses organizational, management and professional dimensions of change as credit-based systems are introduced in higher education institutions in the United Kingdom. Credit-based systems are taken to mean the flexible academic structures based around the parallel but interrelated concepts of credit and modularity. They are being…

  14. O candomblé e o tempo: concepções de tempo, saber e autoridade da África para as religiões afro-brasileiras

    Directory of Open Access Journals (Sweden)

    Prandi Reginaldo

    2001-01-01

    Full Text Available Procura-se mostrar como concepções de tempo, aprendizagem e saber, próprias do candomblé, são constitutivas da cultura africana de povos que instituíram no Brasil a religião dos orixás. A idéia de vida e morte, nascimento e reencarnação, assim como o culto aos antepassados e aos orixás, tal como concebidos em solo africano, reproduziram-se no Brasil em conformidade com aquelas concepções. Com a transformação do candomblé em religião não mais restrita a afro-descendentes e sua propagação por todo o país, congregando agora adeptos inseridos num mundo de trabalho e de aprendizado controlado pelo tempo capitalista, as concepções ocidentais vão minando os conceitos africanos de tempo e, especialmente, de saber, alterando-se princípios iniciáticos e de constituição da autoridade, da hierarquia e do poder religioso nos terreiros, com mudanças profundas na religião.

  15. WACANA KEAGAMAAN SYIAH-SUNNI DALAM MAJALAH TEMPO DAN SUARA HIDAYATULLAH

    OpenAIRE

    Dadang S Anshori

    2014-01-01

    This study aims to describe the language use as representation of mass media attitudes towards Shia-Sunni conflicts. It employed the qualitative method using Fowler’s critical discourse analysis. The data source was news on Shia-Sunni conflicts in Sampang reported in Tempo and Suara Hidayatullah magazines. The findings are as follows. First, Shia-Sunni conflicts are described in news headings and points of view. Tempo describes the conflicts using the point of view of ‘devil attack’ while Sua...

  16. TEMPO, PATH DEPENDENCE E INSTABILIDADE: AS CONVERGÊNCIAS ENTRE KEYNES E SRAFFA

    OpenAIRE

    Gabriel Mandarino

    2012-01-01

    TEMPO, PATH DEPENDENCE E INSTABILIDADE: AS CONVERGÊNCIAS ENTRE KEYNES E SRAFFA A dissertação analisa alguns tópicos convergentes nas teorias de Keynes e de Sraffa. Aborda a questão do tempo na teoria econômica e da path dependence na teoria neoclássica. Estuda o problema dos preços de produção e as condições para que eles funcionem como centros de gravidade. Através da Teoria Geral de Keynes, examina uma determinada forma de path dependence, aquela que diz respeito à influência das expect...

  17. Electrocatalytic carbohydrate oxidation with 4-benzoyloxy-TEMPO heterogenised in a polymer of intrinsic microporosity

    OpenAIRE

    Kolodziej, Adam; Ahn, Sunyhik D.; Carta, Mariolino; Malpass-Evans, Richard; McKeown, Neil B.; Chapman, Robert S. L.; Bull, Steven D.; Marken, Frank

    2015-01-01

    The enzymeless and operationally simple electrocatalytic oxidation of carbohydrates by "heterogenised" 4-benzoyloxy-TEMPO either (i) immobilised as microcrystals at a glassy carbon electrode surface or (ii) embedded into a polymer of intrinsic microporosity (PIM-EA-TB with 1027 m2g-1 BET surface area and highly rigid framework structure) has been studied in aqueous phosphate buffer of pH 12. It is shown that in contrast to microcrystal deposits, 4-benzolyoxy-TEMPO co-immobilised within PIM-EA...

  18. Practical Aerobic Oxidations of Alcohols and Amines with Homogeneous Cu/TEMPO and Related Catalyst Systems

    Science.gov (United States)

    Ryland, Bradford L.; Stahl, Shannon S.

    2014-01-01

    Alcohol and amine oxidations are common reactions in laboratory and industrial synthesis of organic molecules. Aerobic oxidation methods have long been sought for these transformations, but few practical methods exist that offer advantages over traditional oxidation methods. Recently developed homogeneous Cu/TEMPO (TEMPO = 2,2,6,6-tetramethylpiperidinyl-N-oxyl) and related catalyst systems appear to fill this void. The reactions exhibit high levels of chemoselectivity and broad functional-group tolerance, and they often operate efficiently at room temperature with ambient air as the oxidant. These advances, together with their historical context and recent applications, are highlighted in this minireview. PMID:25044821

  19. Stochastic Change Detection based on an Active Fault Diagnosis Approach

    DEFF Research Database (Denmark)

    Poulsen, Niels Kjølstad; Niemann, Hans Henrik

    2007-01-01

    The focus in this paper is on stochastic change detection applied in connection with active fault diagnosis (AFD). An auxiliary input signal is applied in AFD. This signal injection in the system will in general allow to obtain a fast change detection/isolation by considering the output or an error...

  20. Inferring Plasmodium vivax transmission networks from tempo-spatial surveillance data.

    Science.gov (United States)

    Shi, Benyun; Liu, Jiming; Zhou, Xiao-Nong; Yang, Guo-Jing

    2014-02-01

    The transmission networks of Plasmodium vivax characterize how the parasite transmits from one location to another, which are informative and insightful for public health policy makers to accurately predict the patterns of its geographical spread. However, such networks are not apparent from surveillance data because P. vivax transmission can be affected by many factors, such as the biological characteristics of mosquitoes and the mobility of human beings. Here, we pay special attention to the problem of how to infer the underlying transmission networks of P. vivax based on available tempo-spatial patterns of reported cases. We first define a spatial transmission model, which involves representing both the heterogeneous transmission potential of P. vivax at individual locations and the mobility of infected populations among different locations. Based on the proposed transmission model, we further introduce a recurrent neural network model to infer the transmission networks from surveillance data. Specifically, in this model, we take into account multiple real-world factors, including the length of P. vivax incubation period, the impact of malaria control at different locations, and the total number of imported cases. We implement our proposed models by focusing on the P. vivax transmission among 62 towns in Yunnan province, People's Republic China, which have been experiencing high malaria transmission in the past years. By conducting scenario analysis with respect to different numbers of imported cases, we can (i) infer the underlying P. vivax transmission networks, (ii) estimate the number of imported cases for each individual town, and (iii) quantify the roles of individual towns in the geographical spread of P. vivax. The demonstrated models have presented a general means for inferring the underlying transmission networks from surveillance data. The inferred networks will offer new insights into how to improve the predictability of P. vivax transmission.

  1. Early cannabis initiation and educational attainment: is the association causal? Data from the French TEMPO study.

    Science.gov (United States)

    Melchior, Maria; Bolze, Camille; Fombonne, Eric; Surkan, Pamela J; Pryor, Laura; Jauffret-Roustide, Marie

    2017-10-01

    Adolescent cannabis use has been reported to predict later educational attainment; however, results of past studies may be confounded by inappropriate control for factors that make some youths more likely to use cannabis precociously than others. We aimed to test the possibility of a causal relationship between early cannabis initiation and later academic achievement. Analyses are based on data collected among TEMPO cohort study participants (France, 2009, n = 1103, 22-35 years). Participants were previously assessed in childhood (1991) and adolescence (1999); additionally, their parents had taken part in a longitudinal epidemiological cohort study (GAZEL). Early cannabis initiation was defined as use at age 16 or earlier. Educational attainment was defined as the completion of a high-school degree ('Baccalauréat'). Early (up to and including age 16 years) and late (after age 16 years) cannabis-use initiators were compared with non-users using logistic regression models controlled for inverse probability weights (IPWs) of exposure calculated based on participants' socio-demographic, juvenile and parental characteristics. In age- and sex-adjusted analyses, early cannabis initiators were more likely than non-users to have low educational attainment [odds ratio (OR): 1.77, 95% confidence interval (CI) 1.22-2.55]. In IPWs-controlled analyses, this association somewhat decreased (OR: 1.64, 95% CI 1.13-2.40). Late cannabis initiators did not have lower educational attainment than non-users. Early cannabis use and educational attainment appeared more strongly associated in young women than in young men. Early cannabis can cause low educational attainment. Youths who initiate cannabis use early require attention from addiction and education specialists to reduce their odds of poor long-term outcomes.

  2. Mass spectrometric characterization of glucuronides formed by a new concept, combining Cunninghamella elegans with TEMPO.

    Science.gov (United States)

    Rydevik, Axel; Bondesson, Ulf; Thevis, Mario; Hedeland, Mikael

    2013-10-01

    A new concept for the production of drug glucuronides is presented and the products formed were characterized using ultra high performance liquid chromatography-high resolution mass spectrometry (UPLC-HRMS). Glucuronic acid conjugates are important phase II metabolites of a wide range of drugs. There is a lack of commercially available glucuronides and classic synthetic methods are tedious and expensive. Thus, new methods of glucuronide synthesis are needed. Selective androgen receptor modulators (SARMs) of the aryl propionamide class were used as model compounds and were incubated with the fungus Cunninghamella elegans which was previously known to conjugate drugs with glucose. The resulting glucoside metabolites were then oxidized with tetramethylpiperidinyl-1-oxy (TEMPO). UPLC-HRMS analysis showed that the peaks corresponding to the glucosides had disappeared after the reaction and were replaced by peaks with m/z consistent with the corresponding glucuronic acid conjugates. The MS/MS spectra of the reaction products were investigated and the observed fragment ion pattern corroborated the suggested structural change. A comparison in terms of retention times and product ion spectra between the glucuronides formed by the new method and those produced by liver microsomes indicated that the conjugates from the two different sources were identical, thus demonstrating the human relevance of the presented technique. Furthermore, the glucuronides formed by the presented method were readily hydrolyzed by β-glucuronidase which further gave evidence as to the fact that they were of β configuration. The investigated method was easy to perform, required a low input of work and had a low cost. Copyright © 2013 Elsevier B.V. All rights reserved.

  3. Why Are Students (Not) Motivated to Change Academic Procrastination? An Investigation Based on the Transtheoretical Model of Change

    Science.gov (United States)

    Grunschel, Carola; Schopenhauer, Lena

    2015-01-01

    In light of the drawbacks of academic procrastination, it is surprising that not all students want to decrease academic procrastination. To find out why students are motivated (or not) to change academic procrastination, we investigated the characteristics of 377 German students with different motivations to change based on the Transtheoretical…

  4. Precision Analysis of Visual Odometry Based on Disparity Changing

    Science.gov (United States)

    Fu, C. Y.; Tsay, J. R.

    2017-08-01

    This thesis aims to analyze the precision of Position and orientation of cameras on Mobile Mapping System (MMS) determined by disparity based VO (DBVO). Dual forwards taken cameras on MMS are applied to obtain a sequence of stereo pairs. The Interior Orientation Parameters (IOPs) and Relative Orientation Parameters (ROPs) are derived in advance. The pose estimation is achieved by DBVO without additional control data. The procedure of DBVO consists of four steps. First up, keypoint detection and matching is conducted to obtain tie points in consecutive images. Then, image rectification is implemented to transform tie points into epipolar image space. Next, parallax equation is applied to estimate the 3D coordinates of interest points in epipolar image 3D space. Since their image points have different disparity in neighboring stereo pairs, the 3D coordinates of interest points in neighboring pairs are different as well. Finally, 3D conformal transformation is employed to derive the transformation parameters between neighboring pairs according to changing of coordinates of interest points. The posteriori STDs are adopted to assess the quality of transformation. Besides, check data of ground trajectory derived by photo triangulation are applied to evaluate the result. The relative errors of horizontal and vertical translations derived by DBVO are 2 % and 3 % in non-viewing direction. However, the translation in viewing direction and three rotation angles derived by DBVO have significant systematic errors about 1 m, 3°, 3° and 10° respectively. The influence of error propagation is not significant according to the chart of error distance ratio. In open area, the trajectory of INS/GPS is similar to ground truth, while the trajectory derived by DBVO has 44 % relative error. In residential district, the trajectory derived by INS/GPS has drift error about 2 m, while the relative error of the trajectory derived by DBVO decreases to 38 %. It is presumed that

  5. A novel method for detecting abrupt dynamic change based on the changing Hurst exponent of spatial images

    Science.gov (United States)

    He, W.

    2016-12-01

    The climate system is a classical spatiotemporal evolutionary dynamic system with spatiotemporal correlation characteristics. Based on this, two-dimensional detrended fluctuation analysis (TD-DFA) is used to estimate the Hurst exponent of two-dimensional images. Then, we monitored the change of the Hurst exponent of the images to identify an abrupt dynamic change. We tested the performance of this method with a coupled spatiotemporal dynamic model and found that it works well. The changes in the Hurst exponents of the spatial images are stable when there is no dynamic change in the system, but there will be a clear non-stationary change of the Hurst exponents; for example, the abrupt mean values change if the dynamics of the system change. Thus, the TD-DFA method is suitable for detecting an abrupt dynamic change from natural and artificial images. The spatial images of the NCEP reanalysis of the daily average temperature exhibited fractality. Based on this, we found three non-stationary changes in the Hurst exponents for the NCEP reanalysis of the daily average temperature or for the annual average temperature in the region (60°S-60°N). It can be concluded that the climate system may have incurred three dynamic changes since 1961 on decadal timescales, i.e., in approximately the mid-1970s, the mid-1980s, and between the late 1990s and the early 2000s.

  6. SIMULATION MODEL BASED ON REGIONAL DEVELOPMENT AND VIRTUAL CHANGES

    Directory of Open Access Journals (Sweden)

    Petr Dlask

    2015-10-01

    Full Text Available This paper reports on change as an indicator that can be provide more focused goals in studies of development. The paper offers an answer to the question: How might management gain information from a simulation model and thus influence reality through pragmatic changes. We focus on where and when to influence, manage, and control basic technical-economic proposals. These proposals are mostly formed as simulation models. Unfortunately, however, they do not always provide an explanation of formation changes. A wide variety of simulation tools have become available, e.g. Simulink, Wolfram SystemModeler, VisSim, SystemBuild, STELLA, Adams, SIMSCRIPT, COMSOL Multiphysics, etc. However, there is only limited support for the construction of simulation models of a technical-economic nature. Mathematics has developed the concept of differentiation. Economics has developed the concept of marginality. Technical-economic design has yet to develop an equivalent methodology. This paper discusses an,alternative approach that uses the phenomenon of change, and provides a way from professional knowledge, which can be seen as a purer kind of information, to a more dynamic computing model (a simulation model that interprets changes as method. The validation of changes, as a result for use in managerial decision making, and condition for managerial decision making, can thus be improved.

  7. The speed of our mental soundtracks: Tracking the tempo of involuntary musical imagery in everyday life.

    Science.gov (United States)

    Jakubowski, Kelly; Farrugia, Nicolas; Halpern, Andrea R; Sankarpandi, Sathish K; Stewart, Lauren

    2015-11-01

    The study of spontaneous and everyday cognitions is an area of rapidly growing interest. One of the most ubiquitous forms of spontaneous cognition is involuntary musical imagery (INMI), the involuntarily retrieved and repetitive mental replay of music. The present study introduced a novel method for capturing temporal features of INMI within a naturalistic setting. This method allowed for the investigation of two questions of interest to INMI researchers in a more objective way than previously possible, concerning (1) the precision of memory representations within INMI and (2) the interactions between INMI and concurrent affective state. Over the course of 4 days, INMI tempo was measured by asking participants to tap to the beat of their INMI with a wrist-worn accelerometer. Participants documented additional details regarding their INMI in a diary. Overall, the tempo of music within INMI was recalled from long-term memory in a highly veridical form, although with a regression to the mean for recalled tempo that parallels previous findings on voluntary musical imagery. A significant positive relationship was found between INMI tempo and subjective arousal, suggesting that INMI interacts with concurrent mood in a similar manner to perceived music. The results suggest several parallels between INMI and voluntary imagery, music perceptual processes, and other types of involuntary memories.

  8. Effects of Articulation Styles on Perception of Modulated Tempos in Violin Excerpts

    Science.gov (United States)

    Geringer, John M.; Madsen, Clifford K.; Macleod, Rebecca B.

    2007-01-01

    We investigated effects of legato, staccato and pizzicato articulation styles on the perception of modulated tempos. Seventy-two music majors served as participants. Two solo violin excerpts were chosen with contrasting rhythmic rates and were recorded in all three articulation styles. Examples were presented to listeners in three conditions of…

  9. Sluggish Cognitive Tempo among Young Adolescents with ADHD: Relations to Mental Health, Academic, and Social Functioning

    Science.gov (United States)

    Becker, Stephen P.; Langberg, Joshua M.

    2013-01-01

    Objective: This study investigated the role of sluggish cognitive tempo (SCT) in relation to externalizing and internalizing mental health problems, academic functioning, and social functioning among young adolescents with attention-deficit/hyperactivity disorder (ADHD). Method: In all, 57 youth ages 10 to 14 participated in the study. Parents…

  10. Do Symptoms of Sluggish Cognitive Tempo in Children with ADHD Symptoms Represent Comorbid Internalizing Difficulties?

    Science.gov (United States)

    Garner, Annie A.; Mrug, Sylvie; Hodgens, Bart; Patterson, Cryshelle

    2013-01-01

    Objective: Symptoms of sluggish cognitive tempo (SCT) are correlated with inattention and internalizing difficulties. The purpose of the present study was to determine whether symptoms of SCT reflect comorbid internalizing disorder with ADHD or a separate syndrome. Method: Using a clinical sample of youth evaluated for behavioral and learning…

  11. Distinguishing Sluggish Cognitive Tempo from ADHD in Children and Adolescents: Executive Functioning, Impairment, and Comorbidity

    Science.gov (United States)

    Barkley, Russell A.

    2013-01-01

    Controversy continues as to whether sluggish cognitive tempo (SCT) is a subtype of attention-deficit/hyperactivity disorder (ADHD) or a distinct disorder. This study examined differences between these disorders in demographics, executive functioning (EF), impairment, and prior professional diagnoses to address the issue. There were 1,800 children…

  12. Commentary on Zicari. Expressive Tempo Modifications in Adelina Patti's Recordings: An Integrated Approach

    Directory of Open Access Journals (Sweden)

    Jaan Ross

    2017-09-01

    Full Text Available In this commentary, statistical and sound signal segmentation methods as applied in Massimo Zicari's "Expressive tempo modifications in Adelina Patti's recordings: An integrated approach" are discussed. A potential method of further analyzing the obtained data is also highlighted.

  13. Long-Term Memory for Music: Infants Remember Tempo and Timbre

    Science.gov (United States)

    Trainor, Laurel J.; Wu, Luann; Tsang, Christine D.

    2004-01-01

    We show that infants' long-term memory representations for melodies are not just reduced to the structural features of relative pitches and durations, but contain surface or performance tempo- and timbre-specific information. Using a head turn preference procedure, we found that after a one week exposure to an old English folk song, infants…

  14. Using Tempo to control emerald ash borer: a comparison of trunk and foliage sprays

    Science.gov (United States)

    Deborah G. McCullough; David L. Cappaert; Therese M. Poland

    2005-01-01

    Insecticide sprays may provide arborists, landscapers, and regulatory officials with a useful option to control emerald ash borer (EAB) in some situations. In our 2003 studies, we found that two applications of Tempo (a pyrethroid insecticide) significantly reduced the density of EAB larvae relative to unsprayed trees. It was not clear, however, whether this control...

  15. Effect of TEMPO-oxidization and rapid cooling on thermo-structural properties of nanocellulose.

    Science.gov (United States)

    Mhd Haniffa, Mhd Abd Cader; Ching, Yern Chee; Chuah, Cheng Hock; Yong Ching, Kuan; Nazri, Nik; Abdullah, Luqman Chuah; Nai-Shang, Liou

    2017-10-01

    Recently, surface functionality and thermal property of the green nanomaterials have received wide attention in numerous applications. In this study, microcrystalline cellulose (MCC) was used to prepare the nanocrystalline celluloses (NCCs) using acid hydrolysis method. The NCCs was treated with TEMPO [(2,2,6,6-tetramethylpiperidin-1-yl)oxy radical]-oxidation to prepare TEMPO-oxidized NCCs. Cellulose nanofibrils (CNFs) also prepared from MCC using TEMPO-oxidation. The effects of rapid cooling and chemical treatments on the thermo-structural property studies of the prepared nanocelluloses were investigated through FTIR, thermogravimetric analysis-derivative thermogravimetric (TGA-DTG), and XRD. A posteriori knowledge of the FTIR and TGA-DTG analysis revealed that the rapid cooling treatment enhanced the hydrogen bond energy and thermal stability of the TEMPO-oxidized NCC compared to other nanocelluloses. XRD analysis exhibits the effect of rapid cooling on pseudo 2I helical conformation. This was the first investigation performed on the effect of rapid cooling on structural properties of the nanocellulose. Copyright © 2017 Elsevier Ltd. All rights reserved.

  16. The Relationship between Sluggish Cognitive Tempo, Subtypes of Attention-Deficit/Hyperactivity Disorder, and Anxiety Disorders

    Science.gov (United States)

    Skirbekk, Benedicte; Hansen, Berit Hjelde; Oerbeck, Beate; Kristensen, Hanne

    2011-01-01

    The objective of the present study was to examine the relationship between sluggish cognitive tempo (SCT), subtypes of attention-deficit/hyperactivity disorder (ADHD), and anxiety disorders (AnxDs). One hundred and forty-one children (90 males, 51 females) aged 7-13 years were assigned to four groups, i.e., referred children with comorbid AnxDs…

  17. Revisiting the Relationship between Exercise Heart Rate and Music Tempo Preference

    Science.gov (United States)

    Karageorghis, Costas I.; Jones, Leighton; Priest, David-Lee; Akers, Rose I.; Clarke, Adam; Perry, Jennifer M.; Reddick, Benjamin T.; Bishop, Daniel T.; Lim, Harry B. T.

    2011-01-01

    In the present study, we investigated a hypothesized quartic relationship (meaning three inflection points) between exercise heart rate (HR) and preferred music tempo. Initial theoretical predictions suggested a positive linear relationship (Iwanaga, 1995a, 1995b); however, recent experimental work has shown that as exercise HR increases, step…

  18. Carmen Covito’s ‘Tempo parziale’ : Mothering and Work in Italy in a Nutshell

    NARCIS (Netherlands)

    Jansen, M.M.|info:eu-repo/dai/nl/097607762

    2016-01-01

    Carmen Covito’s short story ‘Tempo parziale’ (2009) [‘Part Time’] can be read as a comment on the peculiarities of female employment and defective social policies in contemporary Italy. Originally written in 2007 for the INAIL campaign Diritti senza rovesci [Rights without flip side] against

  19. Evaluating the Utility of Sluggish Cognitive Tempo in Discriminating among "DSM-IV" ADHD Subtypes

    Science.gov (United States)

    Harrington, Kelly M.; Waldman, Irwin D.

    2010-01-01

    The objective of the current study was to evaluate how the inclusion of 3 Sluggish Cognitive Tempo (SCT) symptoms in Attention-Deficit/Hyperactivity Disorder (ADHD) diagnostic criteria influences the external validity of the ADHD subtypes. The sample comprised 228 children (166 boys, 62 girls) ranging in age from 5-18 years who were referred to…

  20. Uudised : EFK ja TKO kontserdireis. Ajakiri Tempo Veljo Tormisest. Maestro Teo Maiste CD / Allan Vurma

    Index Scriptorium Estoniae

    Vurma, Allan, 1955-

    2000-01-01

    EFK ja TKO kontsertreisist USAsse ja Kanadasse 4.-23. veebr. Inglise kaasaegse muusika kvartalikiri "Tempo" jaanuarinumber (nr. 211) avaldas ulatusliku artikli V. Tormisest. 3. veebr. tähistati Estonia talveaias järjekordse CD ilmumist sarjas "Estonia väljapaistvaid lauljaid", peakangelaseks T. Maiste

  1. Mechanism of Laccase¿TEMPO-Catalyzed Oxidation of Benzyl Alcoho

    NARCIS (Netherlands)

    Tromp, Sander A.; Matijosyte, Inga; Sheldon, Roger A.; Arends, Isabel W.C.E.; Mul, Guido; Kreutzer, Michiel T.; Moulijn, Jacob A.; de Vries, Simon

    2010-01-01

    The oxidation of benzyl alcohol by air, catalyzed by the organocatalyst TEMPO and the enzyme laccase has been investigated. To establish the kinetically significant pathways and corresponding kinetic parameters, a series of experiments is conducted with synthesized stable oxidized and reduced forms

  2. Reducing the Amount of Catalyst in TEMPO-Oxidized Cellulose Nanofibers: Effect on Properties and Cost

    Directory of Open Access Journals (Sweden)

    Albert Serra

    2017-10-01

    Full Text Available Cellulose nanofibers (CNF are interesting biopolymers that find numerous applications in different scientific and technological fields. However, manufacturing costs are still one of the main drawbacks for the industrial production of highly fibrillated, transparent CNF suspensions. In the present study, cellulose nanofibers were produced from bleached eucalyptus pulp via TEMPO-mediated oxidation with varying amounts of NaClO and passed through a high-pressure homogenizer. The CNFs were chemically and physically characterized; cellulose nanopapers were also produced to study tensile properties. Production costs were also calculated. Results indicated that CNF properties are strongly dependent on the carboxyl content. Manufacturing costs showed that chemicals, in particular TEMPO catalyst, represent a large part of the final cost of CNFs. In order to solve this problem, a set of samples were prepared where the amount of TEMPO was gradually reduced. Characterization of samples prepared in this way showed that not only were the costs reduced, but also that the final properties of the CNFs were not significantly affected when the amount of TEMPO was reduced to half.

  3. Sustainability analysis of bioenergy based land use change under climate change and variability

    Science.gov (United States)

    Raj, C.; Chaubey, I.; Brouder, S. M.; Bowling, L. C.; Cherkauer, K. A.; Frankenberger, J.; Goforth, R. R.; Gramig, B. M.; Volenec, J. J.

    2014-12-01

    Sustainability analyses of futuristic plausible land use and climate change scenarios are critical in making watershed-scale decisions for simultaneous improvement of food, energy and water management. Bioenergy production targets for the US are anticipated to impact farming practices through the introduction of fast growing and high yielding perennial grasses/trees, and use of crop residues as bioenergy feedstocks. These land use/land management changes raise concern over potential environmental impacts of bioenergy crop production scenarios, both in terms of water availability and water quality; impacts that may be exacerbated by climate variability and change. The objective of the study was to assess environmental, economic and biodiversity sustainability of plausible bioenergy scenarios for two watersheds in Midwest US under changing climate scenarios. The study considers fourteen sustainability indicators under nine climate change scenarios from World Climate Research Programme's (WCRP's) Coupled Model Intercomparison Project phase 3 (CMIP3). The distributed hydrological model SWAT (Soil and Water Assessment Tool) was used to simulate perennial bioenergy crops such as Miscanthus and switchgrass, and corn stover removal at various removal rates and their impacts on hydrology and water quality. Species Distribution Models (SDMs) developed to evaluate stream fish response to hydrology and water quality changes associated with land use change were used to quantify biodiversity sustainability of various bioenergy scenarios. The watershed-scale sustainability analysis was done in the St. Joseph River watershed located in Indiana, Michigan, and Ohio; and the Wildcat Creek watershed, located in Indiana. The results indicate streamflow reduction at watershed outlet with increased evapotranspiration demands for high-yielding perennial grasses. Bioenergy crops in general improved in-stream water quality compared to conventional cropping systems (maize-soybean). Water

  4. A pausa que refresca... Tempo e espaço nas propagandas da Coca-Cola

    Directory of Open Access Journals (Sweden)

    Ana Lúcia Furquim de Campos

    2004-01-01

    Full Text Available

    Com base nas reflexões de Mikhail Bakhtin (1988 sobre cronótopo e nos estudos dos semióticos, principalmente no que tange ao percurso passional do sujeito, analisamos propagandas impressas e comerciais televisivos da Coca-Cola. O objetivo principal é traçar a trajetória discursiva da Coca-Cola desde sua entrada no Brasil, em 1941, até a campanha Gostoso é viver, lançada em 2001. O discurso da Coca-Cola apresenta valores positivos como a alegria, emoção e prazer. Entretanto, são eliminados valores negativos e ocultados interditos, como: Coca-Cola é um produto norte-americano e industrializado, portanto, não é natural, engorda e vicia. Constrói-se, assim, um discurso que privilegia aspectos temáticos voltados para os estados passionais eufóricos (paixão, emoção, alegria. A Coca-Cola também reforça a idéia de que está presente em todo tempo e lugar. Assim, as categorias espaço-temporais são elementos importantes para a construção de sentido de suas propagandas. Reafirmando os mesmos valores e mantendo as categorias cronotópicas para a construção de sentido de suas propagandas, a Coca-Cola consolida a idéia de onipotência, ou seja, ela tem o "poder" de refrescar, trazer alegria, provovar emoção e satisfazer prazeres. Cria-se, assim, um estilo, isto é, uma identidade calcada em categorias divinas, tais como onipresença e onipotência.

  5. Erosividade das chuvas e tempo de recorrência para Lavras, Minas Gerais

    Directory of Open Access Journals (Sweden)

    Regimeire Freitas Aquino

    2014-02-01

    Full Text Available A erosividade das chuvas é um dos principais agentes causadores da erosão do solo, no sul de Minas Gerais. Por essa razão, objetivou-se, com este trabalho, aplicar cinco distribuições de probabilidades aos valores de erosividades, mensais e anual, e estimar o tempo de recorrência desses valores, com base na melhor distribuição de probabilidades ajustada para a região de Lavras, MG. A série de precipitações estudada foi de 1961 a 2004 e as distribuições de probabilidades utilizadas foram: Gumbel, Gama, Log-normal 2 e 3 parâmetros e Normal, ajustadas pelo método da Máxima Verossimilhança. Verificou-se que as distribuições Gama e Gumbel produziram o menor número de séries não adequadas, registrando-se apenas uma, para o mês de agosto. As demais distribuições produziram maiores números de séries não adequadas, especialmente, a distribuição Log-normal 2 parâmetros. Sendo assim, recomenda-se, para o cálculo de erosividade, que seja feita uma verificação prévia da melhor distribuição para cada período da série estudada, apesar de os dados apontarem um desempenho considerável da distribuição Gumbel.

  6. Fundamental limits on quantum dynamics based on entropy change

    Science.gov (United States)

    Das, Siddhartha; Khatri, Sumeet; Siopsis, George; Wilde, Mark M.

    2018-01-01

    It is well known in the realm of quantum mechanics and information theory that the entropy is non-decreasing for the class of unital physical processes. However, in general, the entropy does not exhibit monotonic behavior. This has restricted the use of entropy change in characterizing evolution processes. Recently, a lower bound on the entropy change was provided in the work of Buscemi, Das, and Wilde [Phys. Rev. A 93(6), 062314 (2016)]. We explore the limit that this bound places on the physical evolution of a quantum system and discuss how these limits can be used as witnesses to characterize quantum dynamics. In particular, we derive a lower limit on the rate of entropy change for memoryless quantum dynamics, and we argue that it provides a witness of non-unitality. This limit on the rate of entropy change leads to definitions of several witnesses for testing memory effects in quantum dynamics. Furthermore, from the aforementioned lower bound on entropy change, we obtain a measure of non-unitarity for unital evolutions.

  7. Changes in cardiovascular function: Weightlessness and ground-based studies

    Science.gov (United States)

    Sandler, H.; Goldwater, D. J.; Bungo, M. W.; Popp, R. L.

    1985-01-01

    Echocardiographic measurements were taken on members of four Space Shuttle missions before (F-10 to F-12) and twice after (L+0 and L+7 to 14 days) 7- to 9-day space flight missions. Such recordings allowed for determination of left ventricular chamber dimensions and subsequent calculations of left ventricular volume and stroke volume. Resting ventricular volume could be shown to significantly decrease 23% on L+) and to be associated with a significant 28% decrease in stroke volume. Studies 7 to 14 days layer showed amelioration of effects, but persistence of end diastolic volume change. Such findings occurred despite ability to fully ambulate and exercise during the postflight period. Comparison of findings with bed rested subjects (athletic and nonathletic) showed similar changes, but changes after bed rest were of smaller magnitude compared to the flight crews. It is concluded that space flight induces significant changes in heart volume even after short duration (7-9 days) missions. Heavy athletic conditioning preflight may contribute to the severity of the observed changes in the flight crews and to the apparent slow postflight process of recovery.

  8. Avaliação do potencial antioxidante da geleia real ao longo do tempo de armazenamento

    Directory of Open Access Journals (Sweden)

    Maria Luisa Teles Marques Florencio Alves

    2012-05-01

    Full Text Available http://dx.doi.org/10.5007/2175-7925.2012v25n3p257   A geleia real é uma substância com aspecto de pasta gelatinosa, de cor branca, ligeiramente amarelada, secretada pelas glândulas hipofaringeanas e mandibulares das abelhas operárias. O objetivo desta pesquisa foi avaliar o potencial antioxidante da geleia real, ao longo do tempo de armazenamento. Os parâmetros físico-químicos utilizados foram: umidade, teor de ácido ascórbico e de fenólicos totais. As amostras foram submetidas ao processo de extração dando origem ao extrato alcoólico, que foi aplicado ao teste do 1,1-difenil-2-picrilhidrazil (DPPH para avaliação da atividade antioxidante in vitro. A geleia real apresentou baixos teores de ácido ascórbico (de 0,75 a 1,31mg/100g base úmida e de fenólicos totais (de 14,26 a 28,30mg EAG/100g base úmida. As porcentagens de descoloração do DPPH pelo extrato alcoólico das amostras ficaram acima de 50%, exceto aos 90 dias de armazenamento. A partir dos resultados obtidos, considerando-se os reduzidos teores de ácido ascórbico e de fenólicos totais e, ainda, o baixo desempenho do extrato alcoólico das amostras no teste de atividade antioxidante in vitro, conclui-se que a geleia real apresenta potencial antioxidante relativamente baixo. O tempo de armazenamento não foi determinante nas alterações encontradas.

  9. Graph-based structural change detection for rotating machinery monitoring

    Science.gov (United States)

    Lu, Guoliang; Liu, Jie; Yan, Peng

    2018-01-01

    Detection of structural changes is critically important in operational monitoring of a rotating machine. This paper presents a novel framework for this purpose, where a graph model for data modeling is adopted to represent/capture statistical dynamics in machine operations. Meanwhile we develop a numerical method for computing temporal anomalies in the constructed graphs. The martingale-test method is employed for the change detection when making decisions on possible structural changes, where excellent performance is demonstrated outperforming exciting results such as the autoregressive-integrated-moving average (ARIMA) model. Comprehensive experimental results indicate good potentials of the proposed algorithm in various engineering applications. This work is an extension of a recent result (Lu et al., 2017).

  10. An Energy Based Numerical Approach to Phase Change Problems

    DEFF Research Database (Denmark)

    Hauggaard-Nielsen, Anders Boe; Damkilde, Lars; Krenk, Steen

    1996-01-01

    Phase change problems, occurring e.g. in melting, casting and freezing processes, are often characterized by a very narrow transition zone with very lareg changes in heat capacity and conductivity. This leads to problems in numerical procedures, where the transition zone propagates through a mesh...... in the mid-point of the current time step and full energy balance is restored in each iteration by adjusting the local temperature. Examples demonstrate improved accuracy, a reduction of the numerical disturbances introduced by the passage of the transition zone and a smaller number of timesteps needed...

  11. TEMPO E HISTÓRIA – revisitando uma discussão conceitual

    Directory of Open Access Journals (Sweden)

    José D'Assunção Barros

    2011-07-01

    Full Text Available RESUMO:Busca-se examinar a relação entre Tempo e História, particularmente atentando para os principais conceitos referidos a esta relação: temporalidade, duração, evento, processo e outros. Em um segundo momento, desenvolve-se um contraste entre o conceito aristotélico e o conceito agostiniano de tempo, de modo a preparar as outras duas discussões do artigo: a relação entre ‘tempo da ação’ e ‘tempo da narrativa’ na construção da História, de acordo com Paul Ricoeur, e as relações entre Futuro e Passado na constituição do Presente, de acordo com as contribuições de Koselleck.PALAVRAS-CHAVE: Tempo; Narrativa; História.ABSTRACT:This article aims to examine the relation between Time and History, attempting in particular to the mainly concepts referred to this relation: Temporality, duration, event, process, and others. In a second moment, it’s developed a contrast between the Aristotelian concept and the Augustinian concept of time, in order to prepare the two other discussions of the article: the relation between ‘action time’ and ‘narrative time’ in the construction of History, according Paul Ricoeur, and the relations between Future and Past in the constitution of Present, according the contributions of Koselleck.KEYWORDS: Time, Narrative; History.Recebido: 06/02/2011         Aceito: 05/04/2011

  12. Evidence-based medicine in rapidly changing technologies

    DEFF Research Database (Denmark)

    Schroeder, Torben Veith

    2008-01-01

    Evidence-based medicine (EBM) is not a randomised controlled trial (RCT), but EBM seeks to apply evidence gained from scientific methods - which could be RCT - to daily medical practice. Any surgical treatment reflects a certain development technically as well as skills based. The procedure may...

  13. Impacts of Europe's changing climate- 2008 indicator-based assessment

    NARCIS (Netherlands)

    Swart, R.J.

    2008-01-01

    The report presents past and projected climate change and impacts in Europe by means of about 40 indicators and identifies sectors and regions most vulnerable with a high need for adaptation. The report covers the following indicator categories: atmosphere and climate, cryosphere, marine

  14. Mining Based on Learning from Process Change Logs

    NARCIS (Netherlands)

    Li, C.; Reichert, M.U.; Wombacher, Andreas; Ardagna, Danilo; Mecella, Massimo; Yang, Jian

    2008-01-01

    In today’s dynamic business world economic success of an enterprise increasingly depends on its ability to react to internal and external changes in a quick and flexible way. In response to this need, process-aware information systems (PAIS) emerged, which support the modeling, orchestration and

  15. Videogames, Tools for Change: A Study Based on Activity Theory

    Science.gov (United States)

    Méndez, Laura; Lacasa, Pilar

    2015-01-01

    Introduction: The purpose of this study is to provide a framework for analysis from which to interpret the transformations that take place, as perceived by the participants, when commercial video games are used in the classroom. We will show how Activity Theory (AT) is able to explain and interpret these changes. Method: Case studies are…

  16. ECG-Based Measurements of Drug-induced Repolarization Changes

    DEFF Research Database (Denmark)

    Bhuiyan, Tanveer Ahmed

    The purpose of this thesis is to investigate the abnormal repolarization both in the cellular and the surface ECG along with their relationship. It has been identified that the certain morphological changes of the monophasic action potential are predictor of TdP arrhythmia. Therefore the proporti...

  17. Memory-based mismatch response to frequency changes in rats.

    Directory of Open Access Journals (Sweden)

    Piia Astikainen

    Full Text Available Any occasional changes in the acoustic environment are of potential importance for survival. In humans, the preattentive detection of such changes generates the mismatch negativity (MMN component of event-related brain potentials. MMN is elicited to rare changes ('deviants' in a series of otherwise regularly repeating stimuli ('standards'. Deviant stimuli are detected on the basis of a neural comparison process between the input from the current stimulus and the sensory memory trace of the standard stimuli. It is, however, unclear to what extent animals show a similar comparison process in response to auditory changes. To resolve this issue, epidural potentials were recorded above the primary auditory cortex of urethane-anesthetized rats. In an oddball condition, tone frequency was used to differentiate deviants interspersed randomly among a standard tone. Mismatch responses were observed at 60-100 ms after stimulus onset for frequency increases of 5% and 12.5% but not for similarly descending deviants. The response diminished when the silent inter-stimulus interval was increased from 375 ms to 600 ms for +5% deviants and from 600 ms to 1000 ms for +12.5% deviants. In comparison to the oddball condition the response also diminished in a control condition in which no repetitive standards were presented (equiprobable condition. These findings suggest that the rat mismatch response is similar to the human MMN and indicate that anesthetized rats provide a valuable model for studies of central auditory processing.

  18. "No tempo de Zicartola": Locating Cultural Mediation and Social Change, 1963-65

    Science.gov (United States)

    Dietrich, Elise M.

    2017-01-01

    In 1960s Rio de Janeiro, the Brazilian white middle class embraced the samba music written by working-class blacks as a source of authentic national culture. Cultural mediators, or individuals that bridged sociocultural spheres and negotiated the terms in which work was produced and circulated, were essential to samba's mainstream acceptance. This…

  19. Cardiovascular, cerebrovascular, and respiratory changes induced by different types of music in musicians and non-musicians: the importance of silence

    National Research Council Canada - National Science Library

    Bernardi, L; Porta, C; Sleight, P

    To assess the potential clinical use, particularly in modulating stress, of changes in the cardiovascular and respiratory systems induced by music, specifically tempo, rhythm, melodic structure, pause...

  20. A Multitarget Land Use Change Simulation Model Based on Cellular Automata and Its Application

    National Research Council Canada - National Science Library

    Jun Yang; Fei Chen; Jianchao Xi; Peng Xie; Chuang Li

    2014-01-01

      Based on the analysis of the existing land use change simulation model, combined with macroland use change driving factors and microlocal land use competition, and through the application of Python...

  1. Organizational change strategies for evidence-based practice.

    Science.gov (United States)

    Newhouse, Robin P; Dearholt, Sandi; Poe, Stephanie; Pugh, Linda C; White, Kathleen M

    2007-12-01

    Evidence-based practice, a crucial competency for healthcare providers and a basic force in Magnet hospitals, results in better patient outcomes. The authors describe the strategic approach to support the maturation of The Johns Hopkins Nursing evidence-based practice model through providing leadership, setting expectations, establishing structure, building skills, and allocating human and material resources as well as incorporating the model and tools into undergraduate and graduate education at the affiliated university.

  2. Trabalho em saúde em tempos de biopoder

    Directory of Open Access Journals (Sweden)

    Miguel Angelo Barbosa Maia

    2014-07-01

    Full Text Available Making reference to the theories of Yves Clot's Activity Clinic, Foucault and Agamben, we carry out a theoretical reflection on health care workers when they are crossed by contemporaneous Capitalism's inflection. By a concise historical analysis, we consider that the health care practices have favored to have the control over an abstract biological body and that they have been crossed by a market logic, that takes immediate effects both on the people who needs medical treatment and those whose jobs are to take care of them. Considering the work as creative activity, we bring this article to a close suggesting that the care of others can be the same as caring for oneself, as postulated by Foucault, a kind of resistance against the changing of the health care system in a biopower emblematic territory, where the value of one life is decided by a sovereign, as Agamben have said.

  3. Estimating ecosystem carbon change in the Conterminous United States based on 40 years of land-use change and disturbance

    Science.gov (United States)

    Sleeter, B. M.; Rayfield, B.; Liu, J.; Sherba, J.; Daniel, C.; Frid, L.; Wilson, T. S.; Zhu, Z.

    2016-12-01

    temporal changes and variability in carbon storage and flux resulting from land use change and disturbance between 1973 and 2015. Additionally, based on stochastic simulations we quantify and present key sources of uncertainty in the estimation of terrestrial ecosystem carbon dynamics.

  4. Climate Change Impact Assessment on Han River Long Term Runoff in South Korea Based on RCP Climate Change Scenario

    Directory of Open Access Journals (Sweden)

    Seung Jin Hong

    2014-01-01

    Full Text Available The 2007 World Economic Forum (WEF referred to climate change as the overriding problem we face. Concerns have been raised about how global warming would accelerate future climate change and its consequences. Many climate change studies expect the possible occurrence of extreme high temperature, increase in heavy rains and strong typhoons in the near future. Currently, climate change scenarios are used to prepare an appropriate plan for these phenomena under climate change. The main purpose of this paper is to suggest and evaluate an operational method of assessing the potential impact of climate change on hydrologic components and water resources at the regional scale. Future runoff was simulated using high resolution Regional Circulation Model (RCM (12.5 × 12.5 km Representative Concentration Pathway (RCP scenario operated by the Korea Meteorological Administration (KMA and a semi-distribution model or SLURP (Semi-distributed Land Use-based Runoff Process. The study was carried out on the Han River including its nine dams. The study found that runoff characteristics, especially annual distribution, could change. The discharge in July tends to decrease while runoff can increase in August and September. The flow duration curve was estimated and compared with observed data and simulated daily runoff data for Paldang-dam to evaluate the effect of climate change. The analysis of the flow duration curve shows that the mean average low flow increased while the average wet and normal flow decreased under the climate change scenario.

  5. Espacio, tempo e historia nunha vila galega: Palas de Rei

    OpenAIRE

    Pereiro, Xerardo

    2017-01-01

    Tese doutoral em antropologia social sobre os processos de urbanização social e cultural das vilas do centro da Galiza, com base num trabalho de campo na vila de Palas de Rei. Texto-reescrito entre 1997 e 2002, publicado parcialmente pela editora Sotelo Blanco con o título: "Galegos de vila. Antropoloxía dun espazo rurbano" Orientação da tese doutoral: Prof. Dr. José Antonio Fernández de Rota (catedrático de antropologia social da Universidade da Corunha - Galiza) - In memoriam

  6. The impact of surveillance on weight change and predictors of change in a population-based firefighter cohort.

    Science.gov (United States)

    Poston, Walker S C; Jitnarin, Nattinee; Haddock, C Keith; Jahnke, Sara A; Tuley, Brianne C

    2012-08-01

    To document weight changes in a population-based cohort of male career firefighters and evaluate the impact of health surveillance on subsequent participant behavior and body composition. Body mass index, waist circumference, and body fat percentage were assessed longitudinally in 311 male firefighters. Firefighters who reported making no changes after the baseline assessment (42.1%) experienced a 0.64 ± 3.1 kg average weight gain, whereas firefighters who reported making one or more health behavior change (ie, changing their diet, increasing their physical activity, or both; 52.1%) lost an average of -1.3 kg. Regular health surveillance may motivate some firefighters to make health behavior changes. Although it is not currently the norm, fire departments should provide firefighters with annual health assessments including body composition and fitness measures, consistent with those recommended by the fire service's Wellness and Fitness Initiative.

  7. Prion disease tempo determined by host-dependent substrate reduction

    Science.gov (United States)

    Mays, Charles E.; Kim, Chae; Haldiman, Tracy; van der Merwe, Jacques; Lau, Agnes; Yang, Jing; Grams, Jennifer; Di Bari, Michele A.; Nonno, Romolo; Telling, Glenn C.; Kong, Qingzhong; Langeveld, Jan; McKenzie, Debbie; Westaway, David; Safar, Jiri G.

    2014-01-01

    The symptoms of prion infection can take years or decades to manifest following the initial exposure. Molecular markers of prion disease include accumulation of the misfolded prion protein (PrPSc), which is derived from its cellular precursor (PrPC), as well as downregulation of the PrP-like Shadoo (Sho) glycoprotein. Given the overlapping cellular environments for PrPC and Sho, we inferred that PrPC levels might also be altered as part of a host response during prion infection. Using rodent models, we found that, in addition to changes in PrPC glycosylation and proteolytic processing, net reductions in PrPC occur in a wide range of prion diseases, including sheep scrapie, human Creutzfeldt-Jakob disease, and cervid chronic wasting disease. The reduction in PrPC results in decreased prion replication, as measured by the protein misfolding cyclic amplification technique for generating PrPSc in vitro. While PrPC downregulation is not discernible in animals with unusually short incubation periods and high PrPC expression, slowly evolving prion infections exhibit downregulation of the PrPC substrate required for new PrPSc synthesis and as a receptor for pathogenic signaling. Our data reveal PrPC downregulation as a previously unappreciated element of disease pathogenesis that defines the extensive, presymptomatic period for many prion strains. PMID:24430187

  8. Awareness Programs and Change in Taste-based Caste Prejudice

    DEFF Research Database (Denmark)

    Banerjee, Ritwik; Gupta, Nabanita Datta

    2015-01-01

    in his seminal work on taste based discrimination, in the context of caste in India, with management students (potential employers in the near future) as subjects. First, we measure caste prejudice and show that awareness through a TV social program reduces implicit prejudice against the lower caste...

  9. Detecting Hacked Twitter Accounts based on Behavioural Change

    NARCIS (Netherlands)

    Nauta, Meike; Habib, Mena Badieh; van Keulen, Maurice

    Social media accounts are valuable for hackers for spreading phishing links, malware and spam. Furthermore, some people deliberately hack an acquaintance to damage his or her image. This paper describes a classification for detecting hacked Twitter accounts. The model is mainly based on features

  10. Point Cloud Based Change Detection - an Automated Approach for Cloud-based Services

    Science.gov (United States)

    Collins, Patrick; Bahr, Thomas

    2016-04-01

    The fusion of stereo photogrammetric point clouds with LiDAR data or terrain information derived from SAR interferometry has a significant potential for 3D topographic change detection. In the present case study latest point cloud generation and analysis capabilities are used to examine a landslide that occurred in the village of Malin in Maharashtra, India, on 30 July 2014, and affected an area of ca. 44.000 m2. It focuses on Pléiades high resolution satellite imagery and the Airbus DS WorldDEMTM as a product of the TanDEM-X mission. This case study was performed using the COTS software package ENVI 5.3. Integration of custom processes and automation is supported by IDL (Interactive Data Language). Thus, ENVI analytics is running via the object-oriented and IDL-based ENVITask API. The pre-event topography is represented by the WorldDEMTM product, delivered with a raster of 12 m x 12 m and based on the EGM2008 geoid (called pre-DEM). For the post-event situation a Pléiades 1B stereo image pair of the AOI affected was obtained. The ENVITask "GeneratePointCloudsByDenseImageMatching" was implemented to extract passive point clouds in LAS format from the panchromatic stereo datasets: • A dense image-matching algorithm is used to identify corresponding points in the two images. • A block adjustment is applied to refine the 3D coordinates that describe the scene geometry. • Additionally, the WorldDEMTM was input to constrain the range of heights in the matching area, and subsequently the length of the epipolar line. The "PointCloudFeatureExtraction" task was executed to generate the post-event digital surface model from the photogrammetric point clouds (called post-DEM). Post-processing consisted of the following steps: • Adding the geoid component (EGM 2008) to the post-DEM. • Pre-DEM reprojection to the UTM Zone 43N (WGS-84) coordinate system and resizing. • Subtraction of the pre-DEM from the post-DEM. • Filtering and threshold based classification of

  11. Pheromones-based sexual selection in a rapidly changing world.

    Science.gov (United States)

    Henneken, Jessica; Jones, Therésa M

    2017-12-01

    Insects utilise chemical cues for a range of different purposes and the complexity and degree of specificity of these signals is arguably unparalleled in the animal kingdom. Chemical signals are particularly important for insect reproduction and the selective pressures driving their evolution and maintenance have been the subject of previous reviews. However, the world in which chemical cues evolved and are maintained is changing at an unprecedented rate. How (or indeed whether) chemical signals used in sexual selection will respond is largely unknown. Here, we explore how recent increases in urbanisation and associated anthropogenic impacts may affect how chemical signals are produced and perceived. We focus on four anthropomorphic influences which have the potential to interact with pheromone-mediated sexual selection processes; climatic temperature shifts, exposure to chemical pollutants, the presence of artificial light at night and nutrient availability. Our aim is to provide a broad overview of key areas where the rapidly changing environment of the future might specifically affect pheromones utilised in sexual selection. Copyright © 2017. Published by Elsevier Inc.

  12. Fluorescence detection by intensity change based sensors: a theoretical model.

    Science.gov (United States)

    Galbán, Javier; Delgado-Camón, Arantzazu; Cebolla, Vicente L; de Marcos, Susana; Polo, Víctor; Mateos, Elena

    2012-01-01

    According to Fluorescence Detection by Intensity Changes (FDIC) the fluorescence intensity of many fluorophores depends on the non-covalent (specific and/or non-specific) interactions these fluorophores would be able to establish with the solvent and, more interestingly, with other surrounding molecules. This latter effect is the basis of FDIC for analytical purposes. In this paper, a preliminary study of FDIC applications using a fluorophore supported in a solid medium (sensor film) is presented. First, a mathematical model relating the analyte concentration with the immobilized fluorophore fluorescence is deduced. The model includes all the different mechanisms explaining this relationship: index of refraction or dielectric constant modification, scattering coefficient alteration and sensor film volume increase. Then, the very first experimental results are presented, using different fluorophores and solid supports. The best results were obtained using polyacrylamide (PAA) polymers and coralyne as the fluorophore. This sensor film is applied for albumin and polyethylenglycol determination and the results are compared with those obtained using coralyne in solution. Albumin quenches the coralyne fluorescence in both cases (solution and film), while PEG quenches coralyne fluorescence in films but increases it in solution. These results suggest that the outstanding fluorescence change mechanism is sensor films is the film volume increases, which is different than those observed in solution.

  13. Timing and tempo of Deccan volcanism: evidence from mercury anomalies

    Science.gov (United States)

    Adatte, Thierry; Font, Eric; Mbabi Bitchong, André; Keller, Gerta; Schoene, Blair; Samperton, Kyle; Khadri, Syed

    2017-04-01

    Mercury is a very toxic element, with a long residence time (1-2 years) and wide distribution by aerosols. Volcanic emissions and coal combustion are the two main natural sources of mercury. Several studies [1-4] evaluated the relationship between Hg anomalies in sediments and LIP activity across mass extinction horizons. The bulk (80%) of Deccan Trap eruptions occurred over a relatively short time interval in magnetic polarity C29r. U-Pb zircon geochronology reveals the onset of this main eruption phase 250 ky before the Cretaceous-Tertiary (KT) mass extinction and continued into the early Danian suggesting a cause-and-effect relationship [5]. In a related study we investigate the mercury (Hg) contents of sections in France (Bidart), Spain (Zumaya), Denmark (Nye Klov), Austria (Gams), Italy (Gubbio), Tunisia (Elles, El Kef), Egypt (Sinai), India (Megalaya), Texas USA (Brazos River) and Mexico (La Parida). In all sections, results show Hg concentrations are more than 2 orders of magnitude greater during the last 100ky of the Maastrichtian up to the early Danian P1a zone (first 380 Ky of the Paleocene). These Hg anomalies are correlative with the main Deccan eruption phase. Hg anomalies generally show no correlation with clay or total organic carbon contents, suggesting that the mercury enrichments resulted from higher input of atmospheric Hg species into the marine realm, rather than organic matter scavenging and/or increased run-off. At Gams, Bidart and Elles, Hg anomalies correlate with high shell fragmentation and dissolution effects in planktic foraminifera indicating that paleoenvironmental and paleoclimate changes drastically affected marine biodiversity. These observations provide further support that Deccan volcanism played a key role in increasing atmospheric CO2 and SO2 levels that resulted in global warming and acidified oceans, increasing biotic stress that predisposed faunas to eventual extinction at the KTB.

  14. Evidence-based medicine in rapidly changing technologies

    DEFF Research Database (Denmark)

    Schroeder, T V

    2008-01-01

    Evidence-based medicine (EBM) is not a randomised controlled trial (RCT), but EBM seeks to apply evidence gained from scientific methods - which could be RCT - to daily medical practice. Any surgical treatment reflects a certain development technically as well as skills based. The procedure may....... On the other hand, if started too late there is a chance that data may be lost because the technology has already been introduced into the daily clinics and physicians may be unwilling to recruit patients. Or the opposite, that the technique may have been rejected without a proper trial. In this situation...... it has been suggested to perform a so called tracker trial. In such trials protocols are more flexible without prefixed sample size and will require repeated interim analyses. Often, it will be relevant to supplement the clinical trials with data from large clinical databases - in particular when long...

  15. David Hume contra os contratualistas de seu tempo

    Directory of Open Access Journals (Sweden)

    Gabriel Bertin de Almeida

    2007-01-01

    Full Text Available O objetivo do texto é propor uma interpretação da obra de Hume que permita uma outra maneira de refutação ao contratualismo, diversa da refutação "oficial", baseada, aquela interpretação, no conceito de artifício, significativamente diferente do artifício criado pelos contratualistas, oposição esta a que a tradição de comentaristas da filosofia política humeana, de maneira geral, não faz referência, quando se trata da refutação ao contratualismo.The objective of the text is to propose an interpretation of Hume's works that allows another way of refusing contractualism, different from the "official" refusal, and which is based (the new one on the concept of artifice, which is extremely different from the artifice created by the contractualists, whose opposition the tradition of commentators of Humean political philosophy, generally, do not refer to, when it is the case of refusing contractualism.

  16. O legado de Florence Nightingale: uma viagem no tempo

    Directory of Open Access Journals (Sweden)

    Roberta Costa

    2009-01-01

    Full Text Available Es un estudio histórico, descriptivo, de carácter cualitativo, con el objetivo de reflexionar sobre las maneras como Florence Nightingale es representada en la producción científica de Enfermería en el período de 1950 a 2008. Se analizaron 79 estudios de la base de datos PubMed que contenían resúmenes de estas publicaciones. Después del análisis surgieron las siguientes categorías - La historia de Florence: la mirada del autor; Saberes y prácticas establecidas por Florence Nightingale: de las hermanas de la Caridad a la Guerra de Crimea; La educación y los puentes para la enfermería profesional; y Florence Nightingale: ¿feminista, reaccionaria y administradora? Se destaca su papel como administradora, educadora, estadística, y su acción feminista contradictoria. Se concluye que la vida de Nightingale y su papel como creadora de la enfermería moderna en el mundo es destacado como positivo, una mujer que dedicó su vida al cuidado de los otros y a la profesionalización de la enfermería.

  17. Confusion: acetaminophen dosing changes based on NO evidence in adults.

    Science.gov (United States)

    Krenzelok, Edward P; Royal, Mike A

    2012-06-01

    Acetaminophen (paracetamol) plays a vital role in American health care, with in excess of 25 billion doses being used annually as a nonprescription medication. Over 200 million acetaminophen-containing prescriptions, usually in combination with an opioid, are dispensed annually. While acetaminophen is recognized as a safe and effective analgesic and antipyretic, it is also associated with significant morbidity and mortality (hepatotoxicity) if doses in excess of the therapeutic amount are ingested inappropriately. The maximum daily therapeutic dose of 3900-4000 mg was established in separate actions in 1977 and 1988, respectively, via the Food and Drug Administration (FDA) monograph process for nonprescription medications. The FDA has conducted multiple advisory committee meetings to evaluate acetaminophen and its safety profile, and has suggested (but not mandated) a reduction in the maximum daily dosage from 3900-4000 mg to 3000-3250 mg. In 2011, McNeil, the producer of the Tylenol® brand of acetaminophen, voluntarily reduced the maximum daily dose of its 500 mg tablet product to 3000 mg/day, and it has pledged to change the labeling of its 325 mg/tablet product to reflect a maximum of 3250 mg/day. Generic manufacturers have not changed their dosing regimens and they have remained consistent with the established monograph dose. Therefore, confusion will be inevitable as both consumers and health care professionals try to determine the proper therapeutic dose of acetaminophen. Which is the correct dose of acetaminophen: 3000 mg if 500 mg tablets are used, 3250 mg with 325 mg tablets, or 3900 mg when 650 mg arthritis-strength products are used?

  18. Can evidence-based medicine change toilet-training practice?

    Science.gov (United States)

    Wu, Hsi-Yang

    2013-03-01

    To assess the evidence showing that a specific method of toilet training (TT) is more effective than others, as any method of TT recommended by a physician faces obstacles because parents rarely request advice on TT from physicians, and TT practices vary tremendously across cultures and socioeconomic levels. Reports on the natural course of urinary incontinence in children and different methods of TT, published in English between 1946 and 2012, were reviewed. Specifically investigated were historical recommendations on TT, the prevalence of urinary incontinence during childhood, the outcome of TT methods, and the effect of culture and socioeconomic status on the choice of TT method and timing. TT now occurs at later ages than it did previously. This progression reflects changing ideas about normal childhood physiology and psychology. The prevalence of urinary incontinence in European countries progressively decreased in children aged between 6-7 years and 16-17 years old. TT methods change with increasing socioeconomic levels to 'child-centred' techniques applied at older ages, but the prevalence of urinary incontinence after 'parent-centred' techniques of TT at younger ages has not been studied. There is currently no evidence that a specific timing or method of TT is more effective or prevents voiding dysfunction. Follow-up studies of urinary continence in children toilet trained at 6-12 months of age might provide evidence for whether a given method or timing of TT is beneficial to prevent voiding dysfunction. The recommendations of physicians might be more readily adopted if they fit culturally accepted ideas of good parenting techniques.

  19. Timing and tempo of the Great Oxidation Event.

    Science.gov (United States)

    Gumsley, Ashley P; Chamberlain, Kevin R; Bleeker, Wouter; Söderlund, Ulf; de Kock, Michiel O; Larsson, Emilie R; Bekker, Andrey

    2017-02-21

    The first significant buildup in atmospheric oxygen, the Great Oxidation Event (GOE), began in the early Paleoproterozoic in association with global glaciations and continued until the end of the Lomagundi carbon isotope excursion ca. 2,060 Ma. The exact timing of and relationships among these events are debated because of poor age constraints and contradictory stratigraphic correlations. Here, we show that the first Paleoproterozoic global glaciation and the onset of the GOE occurred between ca. 2,460 and 2,426 Ma, ∼100 My earlier than previously estimated, based on an age of 2,426 ± 3 Ma for Ongeluk Formation magmatism from the Kaapvaal Craton of southern Africa. This age helps define a key paleomagnetic pole that positions the Kaapvaal Craton at equatorial latitudes of 11° ± 6° at this time. Furthermore, the rise of atmospheric oxygen was not monotonic, but was instead characterized by oscillations, which together with climatic instabilities may have continued over the next ∼200 My until ≤2,250-2,240 Ma. Ongeluk Formation volcanism at ca. 2,426 Ma was part of a large igneous province (LIP) and represents a waning stage in the emplacement of several temporally discrete LIPs across a large low-latitude continental landmass. These LIPs played critical, albeit complex, roles in the rise of oxygen and in both initiating and terminating global glaciations. This series of events invites comparison with the Neoproterozoic oxygen increase and Sturtian Snowball Earth glaciation, which accompanied emplacement of LIPs across supercontinent Rodinia, also positioned at low latitude.

  20. Meir Sternberg, Raccontare nel Tempo (II: Cronologia, Teleologia, Narrativita

    Directory of Open Access Journals (Sweden)

    Franco Passalacqua

    2010-12-01

    Full Text Available In quest’ultima sezione di Telling in Time (II l’autore porta a compimento l’analisi condotta sulle condizioni di esistenza del discorso narrativo fornendo una definizione conclusiva delle nozioni chiave incontrate lungo l’intero saggio: narratività, narrazione e universali narrativi (individuati negli effetti di suspense, curiosità e sorpresa. Fornite queste definizioni – che assumono tanta più rilevanza se si considera la notevole diffusione che esse hanno avuto nell’ambito degli studi narratologici – l’attenzione si sposta sulle conseguenze di carattere epistemologico che una tale proposta implica nella configurazione degli studi narrativi e, in particolare, in merito all’adattamento, che non può essere più di tipo realistico, rispetto al proprio oggetto di studio. A conclusione del lavoro, Sternberg specifica la propria proposta: essendo la narratività – ecco, in sintesi, l’argomento finale – il procedimento che qualifica il discorso narrativo attraverso criteri anti-rappresentazionali, transmediali e dialogici, l’indagine critica sulla narrazione deve porsi co- me obiettivo primario quello di analizzare i meccanismi cognitivi e le strategie discorsive che so- no alla base dell’interazione dialogica tra lettore e opera (in modo da ancorare le proprie premes- se sulla specificità stessa del genere narrativo e, secondariamente, di comprendere come tale procedimento invariante entri in relazione e modifichi, «narrativizzando», i fattori variabili dell’universo narrativo (al fine di stabilire una disposizione gerarchica tra i diversi fattori narrativi.

  1. Fronteiras, violência e o trabalho do tempo: alguns temas wittgensteinianos

    Directory of Open Access Journals (Sweden)

    Das Veena

    1999-01-01

    Full Text Available Trabalhos recentes sugerem que, quando se contempla a violência, atinge-se uma espécie de limite da capacidade de representar. O caso da Partição da Índia, em 1947, fornece um desses "dramas de horror", por seus atos hediondos de grande escala. Este ensaio trata da domesticação da violência, atualizada na história de uma família urbana do Punjabi, e da necessidade do "trabalho do tempo" para permitir sua cicatrização. Recuperando idéias de Wittgenstein para a Antropologia, a autora mostra como o trabalho do tempo, não sua imagem ou representação, serve para testar o sentido do que é humano quando a linguagem falha ou simplesmente não existe.

  2. Gli incerti confini del cosmo dai buchi neri alle macchine del tempo

    CERN Document Server

    De Felice, Fernando

    2000-01-01

    Il libro mostra come la gravitazione abbia un ruolo determinante nei fenomeni cosmici che più ci impressionano, da quelli relativamente vicini alla nostra esperienza (come la formazione delle stelle) a quelli meno intuibili (come la formazione dei buchi neri), alla struttura dell'Universo nel suo insieme. Oltre a spiegare, in modo qualitativo, concetti come la geometria dello spazio-tempo, la relatività del tempo e i coni di luce, l'autore formula un'ipotesi innovativa tendente a spiegare l'origine della gravitazione e con essa quella dei fenomeni circondati ancora da un alone di mistero: la materia oscura dell'Universo e il destino della materia alla fine del collasso gravitazionale.

  3. Audiência Nativa: cultura regional em tempos de globalização

    Directory of Open Access Journals (Sweden)

    Nilda Aparecida Jacks

    2008-12-01

    Full Text Available Os recentes debates sobre a mundialização da cultura colocam em pauta, em um outro patamar, a questão das culturas regionais e locais e das identidades culturais. Há bem pouco tempo o marco do nacional era o que balizava a referida discussão, tendendo hoje a ser substituido pelo regional, que segundo Otavio Ianni medeia as relações entre o local e o mundial. O texto é baseado em uma pesquisa empírica realizada ainda no marco da relação regional/ nacional, mas serve de ponto de partida para repensar as identidades regionais em tempos de globalização. Trata-se da mediação da identidade regional gaúcha na relação da audiência sul-rio-grandense com a programação de origem nacional, especificamente a telenovela.

  4. A TEMPO-free copper-catalyzed aerobic oxidation of alcohols.

    Science.gov (United States)

    Xu, Boran; Lumb, Jean-Philip; Arndtsen, Bruce A

    2015-03-27

    The copper-catalyzed aerobic oxidation of primary and secondary alcohols without an external N-oxide co-oxidant is described. The catalyst system is composed of a Cu/diamine complex inspired by the enzyme tyrosinase, along with dimethylaminopyridine (DMAP) or N-methylimidazole (NMI). The Cu catalyst system works without 2,2,6,6-tetramethyl-l-piperidinoxyl (TEMPO) at ambient pressure and temperature, and displays activity for un-activated secondary alcohols, which remain a challenging substrate for catalytic aerobic systems. Our work underscores the importance of finding alternative mechanistic pathways for alcohol oxidation, which complement Cu/TEMPO systems, and demonstrate, in this case, a preference for the oxidation of activated secondary over primary alcohols. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  5. The effects of tempo and familiarity on children's affective interpretation of music.

    Science.gov (United States)

    Mote, Jasmine

    2011-06-01

    When and how does one learn to associate emotion with music? This study attempted to address this issue by examining whether preschool children use tempo as a cue in determining whether a song is happy or sad. Instrumental versions of children's songs were played at different tempos to adults and children ages 3 to 5 years. Familiar and unfamiliar songs were used to examine whether familiarity affected children's identification of emotion in music. The results indicated that adults, 4 year olds and 5 year olds rated fast songs as significantly happier than slow songs. However, 3 year olds failed to rate fast songs differently than slow songs at above-chance levels. Familiarity did not significantly affect children's identification of happiness and sadness in music.

  6. Practical aerobic oxidations of alcohols and amines with homogeneous copper/TEMPO and related catalyst systems.

    Science.gov (United States)

    Ryland, Bradford L; Stahl, Shannon S

    2014-08-18

    Oxidations of alcohols and amines are common reactions in the synthesis of organic molecules in the laboratory and industry. Aerobic oxidation methods have long been sought for these transformations, but few practical methods exist that offer advantages over traditional oxidation methods. Recently developed homogeneous Cu/TEMPO (TEMPO = 2,2,6,6-tetramethylpiperidinyl-N-oxyl) and related catalyst systems appear to fill this void. The reactions exhibit high levels of chemoselectivity and broad functional-group tolerance, and they often operate efficiently at room temperature with ambient air as the oxidant. These advances, together with their historical context and recent applications, are highlighted in this Minireview. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  7. Directa, de Nuno Bragança: questões de tempo

    OpenAIRE

    Henriques, Bruno

    2009-01-01

    Tese de mestrado, Literatura Portuguesa Contemporânea, Universidade de Lisboa, Faculdade de Letras, 2009 Este trabalho é uma, entre inúmeras possíveis, análise do tempo, não só como categoria narrativa, a par do espaço e das personagens, mas também como tema, em Directa, de Nuno Bragança. Se por um lado, se fez uma exegese cuidada de problemas literariamente canónicos como o tempo da narrativa, da história e da narração, por outro lado, tentou-se mostrar como a História, enquanto discurso ...

  8. A vivência do tempo na Idade Média, no Livro das Posturas Antigas de Lisboa

    OpenAIRE

    Purificação, Maria Manuela Lima da; Duarte, Luís Miguel

    2009-01-01

    Este trabalho busca conhecer o tempo histórico da Idade Média, através do livro das Posturas Antigas de Lisboa. A partir de regras, costumes e leis que consubstanciam a referida obra, questiona-se sobre o significado daquele tempo para a humanidade. Apesar de não se ter como objectivo um cotejamento entre a Idade Média e a Idade Moderna, determinações do próprio tempo conduzem a pensar no que há de comum entre ambas, especialmente no que se refere à divisão de classes, em diversas passagens. ...

  9. An engineering based on love: responding to climate change

    Energy Technology Data Exchange (ETDEWEB)

    Catalano, G.D. [State Univ. of New York at Binghamton (United States)

    2009-07-01

    'Full text:' Recent death of a beloved member of my family has served as a catalyst for my reflection on not only the nature of my work but also upon my approach to the issue of reforms in engineering and engineering education which are desperately needed. In engineering we often speak of development. Far too often it seems that the model used in engineering education is education for profit making. The ultimate goal is economic growth with no interest in peace, social or environmental justice or wealth distribution. Such a model ignores inequalities, has contempt for the arts and literature, promotes group think, needs docile students and de-emphasizes critical thinking. I would like to offer a different paradigm for engineering education, one which has as its priority the development of not only the human spirit but also the rest of the natural world. Using such a paradigm, each and every being matters, groups are disaggregated into individuals and equal respect exists for each individual. Ultimately the goal of such an education would be to enable each of us to transcend our own particular situations and imagine a global society which is based upon equality and on love. Key elements of an education based upon love would include the capacity for true, rigorous critical thought, the development of a culture in which individual dissent is honored and revered and in which each of us considers our self a citizen of the Earth. Lastly an education based upon love would enable each of us to develop our own individual narrative of moral imagination, that is, to develop the ability to be in another's shoes, to cultivate our inner eye of seeing and knowing and to overcome the blindness that we have all become far too accustomed. (author)

  10. Image-based change estimation (ICE): monitoring land use, land cover and agent of change information for all lands

    Science.gov (United States)

    Kevin Megown; Andy Lister; Paul Patterson; Tracey Frescino; Dennis Jacobs; Jeremy Webb; Nicholas Daniels; Mark. Finco

    2015-01-01

    The Image-based Change Estimation (ICE) protocols have been designed to respond to several Agency and Department information requirements. These include provisions set forth by the 2014 Farm Bill, the Forest Service Action Plan and Strategic Plan, the 2012 Planning Rule, and the 2015 Planning Directives. ICE outputs support the information needs by providing estimates...

  11. Minimally important change determined by a visual method integrating an anchor-based and a distribution-based approach.

    NARCIS (Netherlands)

    de Vet, H.C.W.; Ostelo, R.W.J.G.; Terwee, C.B.; van der Roer, N.; Knol, D.L.; Beckerman, H.; Boers, M.; Bouter, L.M.

    2007-01-01

    Background: Minimally important changes (MIC) in scores help interpret results from health status instruments. Various distribution-based and anchor-based approaches have been proposed to assess MIC. Objectives: To describe and apply a visual method, called the anchor-based MIC distribution method,

  12. Melt-polymerization of TEMPO methacrylates with nano carbons enables superior battery materials.

    Science.gov (United States)

    Vlad, Alexandru; Rolland, Julien; Hauffman, Guillaume; Ernould, Bruno; Gohy, Jean-François

    2015-05-22

    A solvent-free, melt polymerization process of a 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) precursor for rechargeable organic radical batteries is proposed. In situ carbon incorporation in the melted monomer phase yields a nanoscale homogenous polymer composite. Superior battery performances including higher power and cycling stability are attained by using the melt-polymerization method. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  13. Novel PTM-TEMPO biradical for fast dissolution dynamic nuclear polarization.

    Science.gov (United States)

    Muñoz-Gómez, Jose-Luis; Marín-Montesinos, Ildefonso; Lloveras, Vega; Pons, Miquel; Vidal-Gancedo, José; Veciana, Jaume

    2014-10-17

    The synthesis and characterization of a novel trityl-TEMPO biradical and the investigation of its properties as Dynamic Nuclear Polarization (DNP) polarizing agent are reported. Comparison with a structurally related monoradical (PTM-TEMPE) or mixtures of the two monoradical components reveals that the biradical has a much higher polarization efficiency and a faster polarization buildup. This offers the possibility of faster recycling further contributing to its efficiency as a polarizing agent.

  14. Romancização ou serialização: ou diferentes formas de tempo

    Directory of Open Access Journals (Sweden)

    Peter Hitchcock

    2015-11-01

    Full Text Available Este artigo explora a noção bakhtiniana de romancização no que se refere à sua teoria de tempo e serialização. Bakhtin, para quem o romance é histórico, mas sem história, remonta à Grécia antiga para traçar a história do romance. Sem dar a ele uma identidade fixa, compreende-o em termos de tendências e crises. A romancização, para Bakhtin, é um meio de tornar a história literária acessível a uma análise mais dialógica da forma e um modo discursivo para avaliar ideologias criticamente. Ele enfatiza a habilidade desestabilizadora do romance, sua descentralização do discurso e sua acomodação de vozes não oficiais e estrangeiras. Seu sugestivo relato histórico do desenvolvimento do romance nos permite estender seu pensamento e esboçar a romancização mais como uma condição futura do que uma lei genérica. Bakhtin oferece uma versão problemática de modernidade, na qual o romance ativa a influência do tempo sobre o presente; no entanto, por causa da propensão à crise da modernidade, o tempo é suspenso. O artigo também examina um cronotopo do romance sobre o qual Bakhtin tem pouco a dizer: o tempo/espaço da nação. Benedict Anderson e Etienne Balibar, cujos interesses incluem temas relacionados ao comparatismo, ao multiculturalismo e ao pós-colonialismo, questionam a ideia de nação por meio de análises em que o gênero romanesco é privilegiado.

  15. Paesaggio, suolo, tempo: la rappresentazione dei tempi geologici nella citta' di Catania

    OpenAIRE

    Ballarin, Matteo; D'Agnone, Nadia

    2014-01-01

    Parlare di tempo geologico è un modo di contestualizzare i processi materiali della terra nella sua storia. La scala dei tempi geologici suddivide la lunga storia della terra in eoni, ere, periodi ed epoche, non omogenei tra loro, ma in relazione l'un l'altro a seconda di ciò che emerge dall'analisi dei dati stratigrafici o dallo studio della stratificazione dei diversi livelli della crosta terrestre. Recentemente negli studi relativi a territorio e paesaggio è stata introdotta...

  16. De Ser e Tempo aos Beiträge zur Philosophie

    Directory of Open Access Journals (Sweden)

    Jordino Marques

    2007-12-01

    Full Text Available O autor procura desenvolver a relação existente essas duas obras,levando em conta que o próprio Heidegger manifestara um desejo de que os Beiträge zur Philosophie fossem sua segunda obra mais importante, já que, atrávés dela, esclarecem-se muitas orientações que em Ser e Tempo foram apenas indicadas. 

  17. Tropospheric Emissions: Monitoring of Pollution (TEMPO) - Status and Potential Science Studies

    Science.gov (United States)

    Chance, Kelly

    2016-05-01

    TEMPO is the first NASA Earth Venture Instrument, to launch between 2019 and 2021. It measures atmospheric pollution from Mexico City and Cuba to the Canadian oil sands, and from the Atlantic to the Pacific, hourly at high spatial resolution, ~ 10 km2. It measures the key elements of air pollution chemistry. Geostationary (GEO) measurements capture the variability in the diurnal cycle of emissions and chemistry at sub-urban scale to improve emission inventories, monitor population exposure, and enable emission-control strategies. TEMPO measures the UV/visible spectra to retrieve O3, NO2, SO2, H2 CO, C2 H2 O2, H2 O, aerosols, cloud parameters, and UVB radiation. It tracks aerosol loading. It provides near-real-time air quality products. TEMPO is the North American component of the global geostationary constellation for pollution monitoring, with the European Sentinel-4 and the Korean GEMS. TEMPO studies may include: Solar-induced fluorescence from chlorophyll over land and in the ocean to study tropical dynamics, primary productivity, carbon uptake, to detect red tides, and to study phytoplankton; Measurements of stratospheric intrusions that cause air quality exceedances; Measurements at peaks in vehicle travel to capture the variability in emissions from mobile sources; Measurements of thunderstorm activity, including outflow regions to better quantify lightning NOx and O3 production; Cropland measurements follow the temporal evolution of emissions after fertilizer application and from rain-induced emissions from semi-arid soils; Measurements investigate the chemical processing of primary fire emissions and the secondary formation of VOCs and ozone; Measurements examine ocean halogen emissions and their impact on the oxidizing capacity of coastal environments; Spectra of nighttime lights are markers for human activity, energy conservation, and compliance with outdoor lighting standards intended to reduce light pollution.

  18. Recent advances in ambit stochastics with a view towards tempo-spatial stochastic volatility/intermittency

    DEFF Research Database (Denmark)

    Barndorff-Nielsen, Ole E.; Benth, Fred Espen; Veraart, Almut

    Ambit stochastics is the name for the theory and applications of ambit fields and ambit processes and constitutes a new research area in stochastics for tempo-spatial phenomena. This paper gives an overview of the main findings in ambit stochastics up to date and establishes new results on genera...... and to probability and L\\'{e}vy mixing of volatility/intensity parameters will be developed. Important examples for concrete model specifications within the class of ambit fields are given....

  19. Water Based Phase Change Material Heat Exchanger Development

    Science.gov (United States)

    Hansen, Scott W.; Sheth, Ribik B.; Atwell, Matt; Cheek, Ann; Agarwal, Muskan; Hong, Steven; Patel, Aashini,; Nguyen, Lisa; Posada, Luciano

    2014-01-01

    In a cyclical heat load environment such as low Lunar orbit, a spacecraft’s radiators are not sized to reject the full heat load requirement. Traditionally, a supplemental heat rejection device (SHReD) such as an evaporator or sublimator is used to act as a “topper” to meet the additional heat rejection demands. Utilizing a Phase Change Material (PCM) heat exchanger (HX) as a SHReD provides an attractive alternative to evaporators and sublimators as PCM HXs do not use a consumable, thereby leading to reduced launch mass and volume requirements. Studies conducted in this paper investigate utilizing water’s high latent heat of formation as a PCM, as opposed to traditional waxes, and corresponding complications surrounding freezing water in an enclosed volume. Work highlighted in this study is primarily visual and includes understanding ice formation, freeze front propagation, and the solidification process of water/ice. Various test coupons were constructed of copper to emulate the interstitial pin configuration (to aid in conduction) of the proposed water PCM HX design. Construction of a prototypic HX was also completed in which a flexible bladder material and interstitial pin configurations were tested. Additionally, a microgravity flight was conducted where three copper test articles were frozen continuously during microgravity and 2-g periods and individual water droplets were frozen during microgravity.

  20. Changing stigma through a consumer-based stigma reduction program.

    Science.gov (United States)

    Michaels, Patrick J; Corrigan, Patrick W; Buchholz, Blythe; Brown, Jennifer; Arthur, Thomas; Netter, Clarissa; Macdonald-Wilson, Kim L

    2014-05-01

    This study assessed the Anti-Stigma Project workshop, a contact/education intervention developed by On Our Own of Maryland, Inc. and the Maryland Mental Hygiene Administration. Two separate randomized controlled trials administered pre- and post-test questionnaire assessments. One included people with mental illness (N = 127) and a second included mental health providers (N = 131). Post-intervention, people with mental illness were more aware of stigma, had lower levels of prejudice, and increased belief in recovery. Providers were more aware of stigma, had lower levels of prejudice, and increased concurrence in self-determination of people with mental illness. Increasing providers' stigma awareness and recognition can promote higher quality service delivery. Increasing stigma awareness and recognition for people with mental illness can foster confidence in overcoming psychiatric disabilities. Using a participatory action research team, our protocol included extant and newly developed stigma change tools. Organizations seeking to conduct effective evaluation studies should consider collaborative processes including the expertise of affected constituents.

  1. Urbanization analysis by mutual information based change detection between SPOT 5 panchromatic images

    OpenAIRE

    GUEGUEN LIONEL; Pesaresi, Martino; EHRLICH Daniele; Lu,Linlin

    2011-01-01

    A method for analyzing the urbanization process from multitemporal SPOT 5 panchromatic images is presented. A region-based local Mutual Information change indicator is proposed to perform the change analysis of large scenes. Experiments are conducted for mapping the urbanization of Tangshang, China, in between 2003 and 2008. The results show the efficiency of the change detection method.

  2. Land-use change arising from rural land exchange : an agent-based simulation model

    NARCIS (Netherlands)

    Bakker, Martha M.; Alam, Shah Jamal; van Dijk, Jerry; Rounsevell, Mark D. A.

    Land exchange can be a major factor driving land-use change in regions with high pressure on land, but is generally not incorporated in land-use change models. Here we present an agent-based model to simulate land-use change arising from land exchange between multiple agent types representing

  3. Land-use change arising from rural land exchange: an agent-based simulation model

    NARCIS (Netherlands)

    Bakker, M.M.; Alam, S.J.; Dijk, van J.; Rounsevell, M.D.A.

    2015-01-01

    Land exchange can be a major factor driving land-use change in regions with high pressure on land, but is generally not incorporated in land-use change models. Here we present an agent-based model to simulate land-use change arising from land exchange between multiple agent types representing

  4. TEMPO functionalized C60 fullerene deposited on gold surface for catalytic oxidation of selected alcohols

    Science.gov (United States)

    Piotrowski, Piotr; Pawłowska, Joanna; Sadło, Jarosław Grzegorz; Bilewicz, Renata; Kaim, Andrzej

    2017-05-01

    C60TEMPO10 catalytic system linked to a microspherical gold support through a covalent S-Au bond was developed. The C60TEMPO10@Au composite catalyst had a particle size of 0.5-0.8 μm and was covered with the fullerenes derivative of 2.3 nm diameter bearing ten nitroxyl groups; the organic film showed up to 50 nm thickness. The catalytic composite allowed for the oxidation under mild conditions of various primary and secondary alcohols to the corresponding aldehyde and ketone analogues with efficiencies as high as 79-98%, thus giving values typical for homogeneous catalysis, while retaining at the same time all the advantages of heterogeneous catalysis, e.g., easy separation by filtration from the reaction mixture. The catalytic activity of the resulting system was studied by means of high pressure liquid chromatography. A redox mechanism was proposed for the process. In the catalytic cycle of the oxidation process, the TEMPO moiety was continuously regenerated in situ with an applied primary oxidant, for example, O2/Fe3+ system. The new intermediate composite components and the final catalyst were characterized by various spectroscopic methods and thermogravimetry.

  5. Mitochondria-Targeted Antioxidant Mito-Tempo Protects Against Aldosterone-Induced Renal Injury In Vivo

    Directory of Open Access Journals (Sweden)

    Wei Ding

    2017-11-01

    Full Text Available Background/Aims: Growing evidence suggests mitochondrial dysfunction (MtD and the Nlrp3 inflammasome play critical roles in chronic kidney disease (CKD progression. We previously reported that Aldosterone (Aldo-induced renal injury in vitro is directly caused by mitochondrial reactive oxygen species (mtROS-mediated activation of the Nlrp3 inflammasome. Here we aimed to determine whether a mitochondria-targeted antioxidant (Mito-Tempo could prevent Aldo-induced kidney damage in vivo. Methods: C57BL/6J mice were treated with Aldo and/or Mito-Tempo (or ethanol as a control for 4 weeks. Renal injury was evaluated by Periodic Acid-Schiff reagent or Masson’s trichrome staining and electron microscopy. ROS were measured by DCFDA fluorescence and ELISA. MtD was determined by real-time PCR and electron microscopy. Activation of the Nlrp3 inflammasome and endoplasmic reticulum stress (ERS was detected via western blot. Results: Compared with control mice, Aldo-infused mice showed impaired renal function, increased mtROS production and MtD, Nlrp3 inflammasome activation, and elevated ERS. We showed administration of Mito-Tempo significantly improved renal function and MtD, and reduced Nlrp3 inflammasome activation and ERS in vivo. Conclusion: Mitochondria-targeted antioxidants may attenuate Aldo-infused renal injury by inhibiting MtD, the Nlrp3 inflammasome, and ERS in vivo. Therefore, targeting mtROS might be an effective strategy for preventing CKD.

  6. Poesia e cinema: uma forma de representação do mundo e do tempo

    Directory of Open Access Journals (Sweden)

    Ana Lúcia Costa Barbosa

    2016-09-01

    Full Text Available Este artigo visa a analisar a técnica compositiva de três poemas de Carlos Drummond de Andrade, a saber: “Consideração do poema” “Procura de poesia” e “Canto ao homem do povo Charlie Chaplin”, presentes em A rosa do povo, escrito entre 1943 a 1945. Os dois primeiros poemas mereceram de diferentes críticos análises diversas. Alguns assumem posições divergentes, reconhecendo-se no primeiro a função predominante da linguagem, enquanto o outro estaria mais atrelado ao compromisso social. Outras tendências críticas defendem que os dois poemas compõem um todo coerente, estando, ambos, erigidos de acordo com a concepção dialética de gênero lírico. Propõe-se, também, a discutir as relações entre poesia e cinema, entendendo-os como formas de representação cultural de um tempo histórico. O “Canto ao homem do povo Charlie Chaplin” estabelece um diálogo com seu tempo, abordando temas como a luta pela sobrevivência, o protesto contra a fome e a brutalidade dos tempos modernos.

  7. Oficinas de Gestão do Tempo com Estudantes Universitários

    Directory of Open Access Journals (Sweden)

    Clarissa Tochetto de Oliveira

    Full Text Available Resumo Buscou-se descrever a experiência de oficinas de gestão do tempo realizadas junto a acadêmicos de uma universidade pública no interior do Rio Grande do Sul. Foram realizados oito encontros com o objetivo de avaliar e discutir a forma como os participantes costumam organizar o seu tempo. Participaram 85 alunos de graduação e pós-graduação. Os tópicos abordados incluíram estratégias utilizadas para organização, identificação de problemas, metas e objetivos e oferecimento de dicas. Foram descritos os procedimentos e as ferramentas utilizadas nas oficinas. As dificuldades vivenciadas pelos estudantes estavam relacionadas à procrastinação, à incapacidade de dizer “não” às demandas alheias, à carga horária de seus cursos e à conciliação entre estudos, convivência familiar e lazer. A participação na oficina foi um primeiro momento de reflexão sobre a temática para muitos participantes. Pesquisas que investiguem os “motivos” das dificuldades na gestão do tempo nessa população podem subsidiar futuras intervenções junto a esse público.

  8. Quantifying TEMPO Redox Polymer Charge Transport toward the Organic Radical Battery.

    Science.gov (United States)

    Karlsson, Christoffer; Suga, Takeo; Nishide, Hiroyuki

    2017-03-29

    To design new and better organic active battery materials in a rational fashion, fundamental parameters of the charge transport must be studied. Herein we report on the electronic conductivity by electron diffusion in a TEMPO-containing redox polymer, and the reorganization energy of the TEMPO self-exchange in an organic solvent is determined for the first time. The electronic conductivity was 8.5 μS/cm at E(0) and corresponded to a redox hopping mechanism. The apparent electron diffusion coefficient was 1.9 × 10(-9) cm(2)/s at room temperature, and at short times the ion diffusion was limiting with a diffusion coefficient of 6.5 × 10(-10) cm(2)/s. The reorganization energy was determined to be 1.01 eV, indicating a rather polar chemical environment for the TEMPO groups. The implications for the usage of this type of materials in organic energy storage are discussed. As conductivity through 10 μm was demonstrated, we show that, if sufficient swellability can be ensured, charge can be transported through several micrometer thick layers in a battery electrode without any conducting additive.

  9. Awareness programs and change in taste-based caste prejudice

    DEFF Research Database (Denmark)

    Banerjee, Ritwik; Datta Gupta, Nabanita

    Becker's theory of taste-based discrimination predicts that relative employment of the discriminated social group will improve if there is a decrease in the level of prejudice for the marginally discriminating employer. In this paper we experimentally test this prediction offered by Becker (1971......) in the context of caste in India, with management students (potential employers in the near future) as subjects. First, we measure caste prejudice and show that awareness through a TV social program reduces implicit prejudice against the lower caste and the reduction is sustained over time. Second, we find...... that the treatment reduces the prejudice levels of those in the left tail of the prejudice distribution - the group which can potentially affect real outcomes as predicted by the theory. And finally, a larger share of the treatment group subjects exhibit favorable opinoion about reservation in jobs for the lower...

  10. A robust anomaly based change detection method for time-series remote sensing images

    Science.gov (United States)

    Shoujing, Yin; Qiao, Wang; Chuanqing, Wu; Xiaoling, Chen; Wandong, Ma; Huiqin, Mao

    2014-03-01

    Time-series remote sensing images record changes happening on the earth surface, which include not only abnormal changes like human activities and emergencies (e.g. fire, drought, insect pest etc.), but also changes caused by vegetation phenology and climate changes. Yet, challenges occur in analyzing global environment changes and even the internal forces. This paper proposes a robust Anomaly Based Change Detection method (ABCD) for time-series images analysis by detecting abnormal points in data sets, which do not need to follow a normal distribution. With ABCD we can detect when and where changes occur, which is the prerequisite condition of global change studies. ABCD was tested initially with 10-day SPOT VGT NDVI (Normalized Difference Vegetation Index) times series tracking land cover type changes, seasonality and noise, then validated to real data in a large area in Jiangxi, south of China. Initial results show that ABCD can precisely detect spatial and temporal changes from long time series images rapidly.

  11. Scenario-Based Analysis on the Structural Change of Land Uses in China

    Directory of Open Access Journals (Sweden)

    Qian Xu

    2013-01-01

    Full Text Available Land Use/Land Cover change (LUCC is a key aspect of global environmental change, which has a significant impact on climate change. In the background of increasing global warming resulting from greenhouse effect, to understand the impact of land use change on climate change is necessary and meaningful. In this study, we choose China as the study area and explore the possible land use change trends based on the AgLU module and ERB module of global change assessment model (GCAM model and Global Change Assessment Model. We design three scenarios based on socioeconomic development and simulated the corresponding structure change of land use according to the three scenarios with different parameters. Then we simulate the different emission of CO2 under different scenarios based on the simulation results of structure change of land use. At last, we choose the most suitable scenario that could control the emission of CO2 best and obtain the relatively better land use structure change for adaption of climate change. Through this research we can provide a theoretical basis for the future land use planning to adapt to climate change.

  12. Communicating for Climate Change Adaptation: Lessons from a Case Study with Nature-Based Tour Operators

    Science.gov (United States)

    Timm, K.; Sparrow, E. B.; Pettit, E. C.; Trainor, S. F.; Taylor, K.

    2014-12-01

    Increasing temperatures are projected to have a positive effect on the length of Alaska's tourism season, but the natural attractions that tourism relies on, such as glaciers, wildlife, fish, or other natural resources, may change. In order to continue to derive benefits from these resources, nature-based tour operators may have to adapt to these changes, and communication is an essential, but poorly understood, component of the climate change adaptation process. The goal of this study was to determine how to provide useful climate change information to nature-based tour operators by answering the following questions: 1. What environmental changes do nature-based tour operators perceive? 2. How are nature-based tour operators responding to climate and environmental change? 3. What climate change information do nature-based tour operators need? To answer these questions, twenty-four nature-based tour operators representing 20 different small and medium sized businesses in Juneau, Alaska were interviewed. The results show that many of Juneau's nature-based tour operators are observing, responding to, and in some cases, actively planning for further changes in the environment. The types of responses tended to vary depending on the participants' certainty in climate change and the perceived risks to their organization. Using these two factors, this study proposes a framework to classify climate change responses for the purpose of generating meaningful information and communication processes that promote adaptation and build adaptive capacity. During the course of the study, several other valuable lessons were learned about communicating about adaptation. The results of this study demonstrate that science communication research has an important place in the practice of promoting and fostering climate change adaptation. While the focus of this study was tour operators, the lessons learned may be valuable to other organizations striving to engage unique groups in climate

  13. Efeito do tempo após a ingestão de leite sobre o equilíbrio ácido-básico de bezerros Effect of the time after milk feeding on the acid-base balance of calves

    Directory of Open Access Journals (Sweden)

    J.A.N. Lisbôa

    2003-12-01

    Full Text Available Blood pH, carbon dioxide and oxygen partial pressures, bicarbonate, total carbon dioxide, base excess, standard bicarbonate and oxygen saturation concentrations were measured by blood gas analyses in a study of assessment of the acid-base status in young calves. Venous blood samples were taken from 80 healthy female Holstein calves, from four to 30 days of age. The calves were divided in two groups based on the interval between the morning milk feeding and the blood sample collection (up to 30 minutes or over two hours. Greater alkali reserve and higher carbon dioxide pressure values were observed later than 2h after milk feeding, supporting the influence of the diet on the acid-base balance of calves during the milk feeding phase.

  14. Albuminuria and tolvaptan in autosomal-dominant polycystic kidney disease: results of the TEMPO 3:4 Trial.

    Science.gov (United States)

    Gansevoort, Ron T; Meijer, Esther; Chapman, Arlene B; Czerwiec, Frank S; Devuyst, Olivier; Grantham, Jared J; Higashihara, Eiji; Krasa, Holly B; Ouyang, John; Perrone, Ronald D; Torres, Vicente E

    2016-11-01

    The TEMPO 3:4 Trial results suggested that tolvaptan had no effect compared with placebo on albuminuria in autosomal-dominant polycystic kidney disease (ADPKD) patients. However, the use of categorical 'albuminuria events' may have resulted in a loss of sensitivity to detect changes. The aim of this study is to investigate the effects of tolvaptan on albuminuria as a continuous variable. Post hoc analysis of a 3-year prospective, blinded randomized controlled trial, including 1375 ADPKD patients. Albuminuria was measured in a spot morning urine sample prior to tolvaptan dosing and expressed as albumin-to-creatinine ratio (ACR). Baseline median (interquartile range) ACR was 3.2 (1.7-7.1) mg/mmol. Of note, 47.9% of ADPKD patients had normal, 48.7% moderately increased and 3.4% severely increased ACR. Subjects with higher baseline ACR had higher blood pressure and total kidney volume (TKV) and lower estimated glomerular filtration rate (eGFR). During follow-up, higher baseline ACR was associated with more rapid eGFR loss (P albuminuria was associated with more eGFR loss. Tolvaptan decreased albuminuria compared with placebo, independent of blood pressure. Treatment efficacy of tolvaptan on changes in TKV and eGFR was more readily detected in patients with higher albuminuria. © The Author 2015. Published by Oxford University Press on behalf of ERA-EDTA. All rights reserved.

  15. Influences on the onset and tempo of puberty in human beings and implications for adolescent psychological development.

    Science.gov (United States)

    Lee, Yvonne; Styne, Dennis

    2013-07-01

    This article is part of a Special Issue "Puberty and Adolescence". Historical records reveal a secular trend toward earlier onset of puberty in both males and females, often attributed to improvements in nutrition and health status. The trend stabilized during the mid 20th century in many countries, but recent studies describe a recurrence of a decrease in age of pubertal onset. There appears to be an associated change in pubertal tempo in girls, such that girls who enter puberty earlier have a longer duration of puberty. Puberty is influenced by genetic factors but since these effects cannot change dramatically over the past century, environmental effects, including endocrine disrupting chemicals (EDCs), and perinatal conditions offer alternative etiologies. Observations that the secular trends in puberty in girls parallel the obesity epidemic provide another plausible explanation. Early puberty has implications for poor behavioral and psychosocial outcomes as well as health later in life. Irrespective of the underlying cause of the ongoing trend toward early puberty, experts in the field have debated whether these trends should lead clinicians to reconsider a lower age of normal puberty, or whether such a new definition will mask a pathologic etiology. Copyright © 2013 Elsevier Inc. All rights reserved.

  16. Probabilistic forecasts of near-term climate change based on a resampling ensemble technique

    OpenAIRE

    Räisänen, J.; Ruokolainen, L.

    2006-01-01

    Probabilistic forecasts of near-term climate change are derived by using a multimodel ensemble of climate change simulations and a simple resampling technique that increases the number of realizations for the possible combination of anthropogenic climate change and internal climate variability. The technique is based on the assumption that the probability distribution of local climate changes is only a function of the all-model mean global average warming. Although this is unlikely to be exac...

  17. Plants, Pollution and Public Engagement with Atmospheric Chemistry: Sharing the TEMPO Story Through Ozone Garden Activities

    Science.gov (United States)

    Reilly, L. G.; Pippin, M. R.; Malick, E.; Summers, D.; Dussault, M. E.; Wright, E. A.; Skelly, J.

    2016-12-01

    What do a snap-bean plant and a future NASA satellite instrument named TEMPO have in common? They are both indicators of the quality of the air we breathe. Scientists, educators, and museum and student collaborators of the Tropospheric Emissions: Monitoring Pollution (TEMPO) instrument team are developing a program model to engage learners of all ages via public ozone garden exhibits and associated activities. TEMPO, an ultraviolet and visible spectroscopy instrument due for launch on a geostationary host satellite between 2019 and 2021, will scan North America hourly to measure the major elements in the tropospheric ozone chemistry cycle, providing near real-time data with high temporal and spatial resolution. The TEMPO mission provides a unique opportunity to share the story of the effects of air quality on living organisms. A public ozone garden exhibit affords an accessible way to understand atmospheric science through a connection with nature, while providing a visual representation of the impact of ozone pollution on living organisms. A prototype ozone garden exhibit was established at the Virginia Living Museum in partnership with NASA Langley, and has served as a site to formatively evaluate garden planting and exhibit display protocols, hands-on interpretive activities, and citizen science data collection protocols for learners as young as 3 to 10 as well as older adults. The fun and engaging activities, optimized for adult-child interaction in informal or free-choice learning environments, are aimed at developing foundational science skills such as observing, comparing, classifying, and collecting and making sense of data in the context of thinking about air quality - all NGSS-emphasized scientific practices, as well as key capabilities for future contributing members of the citizen science community. As the launch of TEMPO approaches, a major public engagement effort will include disseminating this ozone garden exhibit and program model to a network of

  18. Prognostic Enrichment Design in Clinical Trials for Autosomal Dominant Polycystic Kidney Disease: The TEMPO 3:4 Clinical Trial

    Directory of Open Access Journals (Sweden)

    Maria V. Irazabal

    2016-11-01

    Discussion: Prognostic enrichment strategies such as the entry criteria used for TEMPO 3:4 or preferably the proposed image classification should be used in RCTs for ADPKD to increase power and to reduce cost.

  19. Intra- and intersubject comparison of cochlear implant systems using the Esprit and the Tempo+ behind-the-ear speech processor.

    Science.gov (United States)

    Kompis, Martin; Jenk, Martin; Vischer, Mattheus W; Seifert, Eberhard; Häusler, Rudolf

    2002-12-01

    A patient with bilateral profound deafness was implanted with a Nucleus CI24M cochlear implant (CI) and used an Esprit behind-the-ear (BTE) speech processor. Thirteen months later, the implant had to be removed because of a cholesteatoma. As the same electrode could not be reinserted, a Medel combi40s CI was implanted in the same ear, and the patient used a Tempo+ BTE processor. After 1 year of use of the Combi40s/Tempo+ system, speech recognition was better and was rated better subjectively than with the CI24M/Esprit system. Speech recognition and subjective ratings were also assessed for two matched groups of nine CI users each, using either an Esprit or a Tempo+ processor. On average, speech recognition scores were higher for the group of Tempo+ users, but the difference was not statistically significant. Users of the Esprit processors rated their device higher in terms of cosmetic appearance and comfort of wearing.

  20. A STUDY OF TIME MANAGEMENT EFFECTIVE AS A TOOL FOR INCREASED PRODUCTIVITY AND WORK-LIFE BALANCE AND PERSONAL ADMINISTRAÇÃO DO TEMPO: UM ESTUDO SOBRE A GESTÃO EFICAZ DO TEMPO COMO FERRAMENTA PARA O AUMENTO DA PRODUTIVIDADE E WORK LIFE BALANCE

    Directory of Open Access Journals (Sweden)

    Maria do Carmo Ferreira Lima

    2011-05-01

    Full Text Available

    Time Management has been a topic of high relevance, and subject of extensive discussion, especially in the corporate world. Since the first studies of Classical Administration, as for example the "Motion and Time Study," conducted by Taylor, at the time of the Industrial Revolution, through the Technological Revolution in the early 1990s until today, there have always been questions about how it would be possible to better manage time. The challenge is not to manage time, but relationships managed by professionals. The aim of this study was to understand how the adoption of techniques of Time Management can serve as a tool for increasing productivity and balance the career versus personal life. The literature review was supported by a survey in two stages. The first step applied as descriptive, with the intention of identifying what were called "time wasters" most common within the sample surveyed and diagnose the profile time management of all the participants. In the later stage, we performed a case study, in which, for a period of 30 days, voluntary participants were instructed to use some tools such as software and forms available on the market for organization and effective time management. The results proved that a considerable number of people do not know how to manage and take their time and suffering from the negative effects of work overload and lack of motivation that is constantly tied to this scenario. The outcome of the case study found that the tools of organization and time management are available and promote good improvement in how you manage time. But you need commitment and discipline that uses these mechanisms, since the change in how they manage their time is primarily a behavioral change.

    A Administração do Tempo vem sendo um tema de alta relevância, e muito discutido, principalmente no mundo corporativo. Desde os primeiros estudos da Administração Clássica, como o

  1. Allocation of feed based on individual dairy cow live weight changes: I: Feed intake and live weight changes during lactation

    DEFF Research Database (Denmark)

    Bossen, Dorte; Weisbjerg, Martin Riis; Munksgaard, Lene

    2009-01-01

    Based on individual cow live weight changes, feeding strategies were designed for individual feeding of dairy cows in loose-housing systems and examined in a four-year production trial including 115 Danish Red (DR), 91 Danish Holstein (DH) and 93 Danish Jersey (DJ). Cows were kept in a dairy system...... based on automatic milking (AMS). The objective was to examine the relationship between feed intake and live weight changes in response to the three feeding strategies examined. All cows were allowed a combination of a mixed ration (MR) and individually separately offered concentrate (ISC) in the AMS....... Cows were randomly assigned to one of three feeding strategies; MR1, MR2-E or MR2-L. Cows fed according to the MR1 strategy were allowed one medium energy ration during the whole lactation. Cows on the MR2 strategies were allowed a high energy ration during early lactation, followed by an early (MR2-E...

  2. Planning for climate change: The need for mechanistic systems-based approaches to study climate change impacts on diarrheal diseases.

    Science.gov (United States)

    Mellor, Jonathan E; Levy, Karen; Zimmerman, Julie; Elliott, Mark; Bartram, Jamie; Carlton, Elizabeth; Clasen, Thomas; Dillingham, Rebecca; Eisenberg, Joseph; Guerrant, Richard; Lantagne, Daniele; Mihelcic, James; Nelson, Kara

    2016-04-01

    Increased precipitation and temperature variability as well as extreme events related to climate change are predicted to affect the availability and quality of water globally. Already heavily burdened with diarrheal diseases due to poor access to water, sanitation and hygiene facilities, communities throughout the developing world lack the adaptive capacity to sufficiently respond to the additional adversity caused by climate change. Studies suggest that diarrhea rates are positively correlated with increased temperature, and show a complex relationship with precipitation. Although climate change will likely increase rates of diarrheal diseases on average, there is a poor mechanistic understanding of the underlying disease transmission processes and substantial uncertainty surrounding current estimates. This makes it difficult to recommend appropriate adaptation strategies. We review the relevant climate-related mechanisms behind transmission of diarrheal disease pathogens and argue that systems-based mechanistic approaches incorporating human, engineered and environmental components are urgently needed. We then review successful systems-based approaches used in other environmental health fields and detail one modeling framework to predict climate change impacts on diarrheal diseases and design adaptation strategies. Copyright © 2016 Elsevier B.V. All rights reserved.

  3. The nitroxide Tempo inhibits hydroxyl radical production from the Fenton-like reaction of iron(II)-citrate with hydrogen peroxide.

    Science.gov (United States)

    Shi, Fengqiang; Zhang, Peifeng; Mao, Yujia; Wang, Can; Zheng, Meiqing; Zhao, Zhongwei

    2017-01-29

    In vivo physiological ligand citrate can bind iron(II) ions to form the iron(II)-citrate complex. Inhibition of hydroxyl radical (OH) production from the Fenton-like reaction of iron(II)-citrate with H2O2 is biologically important, as this reaction may account for one of the mechanisms of the labile iron pool in vivo to induce oxidative stress and pathological conditions. Nitroxides have promising potentials as therapeutic antioxidants. However, there are controversial findings indicating that they not only act as antioxidants but also as pro-oxidants when engaged in Fenton reactions. Although the underlying mechanisms are proposed to be the inhibition or enhancement of the OH production by nitroxides, the proposed elucidations are only based on assessing biological damages and not demonstrated directly by measuring the OH production in the presence of nitroxides. In this study, therefore, we employed EPR and fluorescence spectroscopies to show direct evidence that nitroxide 2,2,6,6-tetramethyl-piperidine-1-oxyl (Tempo) inhibited OH production from the Fenton-like reaction of iron(II)-citrate with H2O2 by up to 90%. We also demonstrated spectrophotometrically, for the first time, that this inhibition was due to oxidation of the iron(II)-citrate by Tempo with a stoichiometry of Tempo:Iron(III)-citrate = 1.1:1.0. A scheme was proposed to illustrate the roles of nitroxides engaged in Fenton/Fenton-like reactions. Copyright © 2016 Elsevier Inc. All rights reserved.

  4. Assembling and Using an LED-Based Detector to Monitor Absorbance Changes during Acid-Base Titrations

    Science.gov (United States)

    Santos, Willy G.; Cavalheiro, E´der T. G.

    2015-01-01

    A simple photometric assembly based in an LED as a light source and a photodiode as a detector is proposed in order to follow the absorbance changes as a function of the titrant volume added during the course of acid-base titrations in the presence of a suitable visual indicator. The simplicity and low cost of the electronic device allow the…

  5. Minimal important change (MIC) based on a predictive modeling approach was more precise than MIC based on ROC analysis

    NARCIS (Netherlands)

    Terluin, B.; Eekhout, I.; Terwee, C.B.; de Vet, H.C.W.

    2015-01-01

    Objectives To present a new method to estimate a "minimal important change" (MIC) of health-related quality of life (HRQOL) scales, based on predictive modeling, and to compare its performance with the MIC based on receiver operating characteristic (ROC) analysis. To illustrate how the new method

  6. Persuasion Model and Its Evaluation Based on Positive Change Degree of Agent Emotion

    Science.gov (United States)

    Jinghua, Wu; Wenguang, Lu; Hailiang, Meng

    For it can meet needs of negotiation among organizations take place in different time and place, and for it can make its course more rationality and result more ideal, persuasion based on agent can improve cooperation among organizations well. Integrated emotion change in agent persuasion can further bring agent advantage of artificial intelligence into play. Emotion of agent persuasion is classified, and the concept of positive change degree is given. Based on this, persuasion model based on positive change degree of agent emotion is constructed, which is explained clearly through an example. Finally, the method of relative evaluation is given, which is also verified through a calculation example.

  7. Integrated Methodology for Information System Change Control Based on Enterprise Architecture Models

    Directory of Open Access Journals (Sweden)

    Pirta Ruta

    2015-12-01

    Full Text Available The information system (IS change management and governance, according to the best practices, are defined and described in several international methodologies, standards, and frameworks (ITIL, COBIT, ValIT etc.. These methodologies describe IS change management aspects from the viewpoint of their particular enterprise resource management area. The areas are mainly viewed in a partly isolated environment, and the integration of the existing methodologies is insufficient for providing unified and controlled methodological support for holistic IS change management. In this paper, an integrated change management methodology is introduced. The methodology consists of guidelines for IS change control by integrating the following significant resource management areas – information technology (IT governance, change management and enterprise architecture (EA change management. In addition, the methodology includes lists of controls applicable at different phases. The approach is based on re-use and fusion of principles used by related methodologies as well as on empirical observations about typical IS change management mistakes in enterprises.

  8. "For Some Reason I Find it Hard to Work Quickly": Introduction to the Special Issue on Sluggish Cognitive Tempo.

    Science.gov (United States)

    Becker, Stephen P

    2017-06-01

    The body of research investigating the sluggish cognitive tempo (SCT) construct continues to accumulate at a rapid pace. This article provides an introduction to the Special Issue on SCT, which includes 10 empirical studies that collectively make a major contribution to the SCT knowledge base. Notably, the studies in this Special Issue include participants spanning in age from 4 to 64 years and from four continents, helping to move the field toward a life span, transcultural understanding of SCT. Together, these studies demonstrate that SCT symptoms can be distinguished from ADHD symptoms as early as preschool and that SCT does not fall under the overarching umbrella of ADHD. These studies also show SCT to be associated with a range of external correlates including internalizing symptoms, learning difficulties, functional impairment, and daily life executive functioning (but not performance-based measures of executive functions). Preliminary findings of SCT in relation to thyroid functioning and tobacco exposure are reported. In addition to providing a summary of the key themes across studies included in the Special Issue, this article highlights key ways in which future research can build from these studies. There is a particular need for research utilizing longitudinal, multi-method, and multi-informant designs that can shed light on the etiologies and developmental psychopathology of SCT across the life span.

  9. Pump-probe experiments at the TEMPO beamline using the low-α operation mode of Synchrotron SOLEIL.

    Science.gov (United States)

    Silly, Mathieu G; Ferté, Tom; Tordeux, Marie Agnes; Pierucci, Debora; Beaulieu, Nathan; Chauvet, Christian; Pressacco, Federico; Sirotti, Fausto; Popescu, Horia; Lopez-Flores, Victor; Tortarolo, Marina; Sacchi, Maurizio; Jaouen, Nicolas; Hollander, Philippe; Ricaud, Jean Paul; Bergeard, Nicolas; Boeglin, Christine; Tudu, Bharati; Delaunay, Renaud; Luning, Jan; Malinowski, Gregory; Hehn, Michel; Baumier, Cédric; Fortuna, Franck; Krizmancic, Damjan; Stebel, Luigi; Sergo, Rudi; Cautero, Giuseppe

    2017-07-01

    The SOLEIL synchrotron radiation source is regularly operated in special filling modes dedicated to pump-probe experiments. Among others, the low-α mode operation is characterized by shorter pulse duration and represents the natural bridge between 50 ps synchrotron pulses and femtosecond experiments. Here, the capabilities in low-α mode of the experimental set-ups developed at the TEMPO beamline to perform pump-probe experiments with soft X-rays based on photoelectron or photon detection are presented. A 282 kHz repetition-rate femtosecond laser is synchronized with the synchrotron radiation time structure to induce fast electronic and/or magnetic excitations. Detection is performed using a two-dimensional space resolution plus time resolution detector based on microchannel plates equipped with a delay line. Results of time-resolved photoelectron spectroscopy, circular dichroism and magnetic scattering experiments are reported, and their respective advantages and limitations in the framework of high-time-resolution pump-probe experiments compared and discussed.

  10. Mode and tempo in the evolution of socio-political organization: reconciling 'Darwinian' and 'Spencerian' evolutionary approaches in anthropology.

    Science.gov (United States)

    Currie, Thomas E; Mace, Ruth

    2011-04-12

    Traditional investigations of the evolution of human social and political institutions trace their ancestry back to nineteenth century social scientists such as Herbert Spencer, and have concentrated on the increase in socio-political complexity over time. More recent studies of cultural evolution have been explicitly informed by Darwinian evolutionary theory and focus on the transmission of cultural traits between individuals. These two approaches to investigating cultural change are often seen as incompatible. However, we argue that many of the defining features and assumptions of 'Spencerian' cultural evolutionary theory represent testable hypotheses that can and should be tackled within a broader 'Darwinian' framework. In this paper we apply phylogenetic comparative techniques to data from Austronesian-speaking societies of Island South-East Asia and the Pacific to test hypotheses about the mode and tempo of human socio-political evolution. We find support for three ideas often associated with Spencerian cultural evolutionary theory: (i) political organization has evolved through a regular sequence of forms, (ii) increases in hierarchical political complexity have been more common than decreases, and (iii) political organization has co-evolved with the wider presence of hereditary social stratification.

  11. Portando uma aplicação de sistema embarcado com arquitetura super Loop para operar com sistema operacional em tempo real

    Directory of Open Access Journals (Sweden)

    Edielson Prevato Frigieri

    2014-08-01

    Full Text Available Atualmente, a utilização dos sistemas operacionais, principalmente os sistemas de tempo real (RTOS, tem sido de grande importância no desenvolvimento de sistemas embarcados. Cada vez mais, diferentes e variadas funcionalidades são requisitos dos projetos de sistemas embarcados, como interfaces de comunicação com e sem fio, interfaces com o usuário através de displays, interfaces de acesso de dado como USB, serial, etc. Com o aumento da complexidade, fica extremamente difícil construir um sistema que seja estável e que atenda aos requisitos de tempo a partir de estruturas de programas comuns como o Super Loop. A fim de demonstrar os problemas inerentes deste tipo de arquitetura, foi desenvolvida uma aplicação utilizando o Super Loop e a mesma foi portada para uma solução baseada em RTOS demonstrando os principais conceitos que envolvem um sistema operacional, como utilizá-lo, e os benefícios obtidos com a sua utilização, como estabilidade do sistema, sincronização entre tarefas e cumprimento dos requisitos de tempo. Palavras-chave: Sistemas operacionais de tempo real. Sistemas embarcados. Escalonamento.Porting an embedded system application with super loop architecture to operate with real-time operating systemCurrently, the use of operating systems, especially real-time systems (RTOS, has been of great importance in the development of embedded systems. Increasingly, different and varied features are requirements for embedded system projects, as wired and wireless communication interfaces; user interfaces through displays; data access interfaces such as USB, serial, etc. With the increase in complexity, it becomes extremely difficult to build a system that is stable and that meets the time requirements from common program structures like Super Loop. In order to demonstrate the inherent problems of this type of architecture, an application was developed using Super Loop and it was ported to a solution based on RTOS

  12. Changing from a Rules-based to a Principles-based Accounting Logic: A Review

    National Research Council Canada - National Science Library

    Marta Alexandra Silva Guerreiro; Lúcia Lima Rodrigues; Russell Craig

    2014-01-01

      We explore influences on unlisted companies when Portugal moved from a code law, rules-based accounting system, to a principles-based accounting system of adapted International Financial Reporting Standards (IFRS...

  13. Being Prepared for Climate Change: A Workbook for Developing Risk-Based Adaptation Plans

    Science.gov (United States)

    This workbook is a guide for environmental professionals to construct a climate change adaptation plan based on identifying risks and their consequences. It incorporates watershed management, vulnerability assessments and action planning.

  14. Water body extraction and change detection based on multi-temporal SAR images

    Science.gov (United States)

    Zhang, Zhaohui; Lu, Hanqing; Zhao, Minghua; Zhao, Lei; Zhen, Huiling

    2009-10-01

    This paper proposed an unsupervised change detection method for water body extraction and change detection with multi-temporal SAR images. Firstly, two optimal thresholds are estimated according to the strategy of maximum mutual information, in which computation efficiency is largely improved based on integral image. Secondly, water body extraction is done simultaneously in both input images by optimal thresholds. Finally, by fusing of two segmented results, change detection can be achieved. Experimental results demonstrate the effectiveness of the proposed approach.

  15. Effect of Different Denture Base Materials and Changed Mouth Temperature on Dimensional Stability of Complete Dentures

    Directory of Open Access Journals (Sweden)

    Khalid A. O. Arafa

    2016-01-01

    Full Text Available Background. Type of materials used in fabrication of denture base has an effect on dimension during denture base material processing and other factors related to clinical use. Objective. The study aims were to assess the dimensional stability including thermal changes of three different denture base materials. Methods. Ninety patients were selected to construct complete dentures with different denture base materials. They were randomly divided into three groups: group 1, patients with cobalt chrome metallic base; group 2, patients with heat curing acrylic resin fabricated by injection moulding technique; and group 3, patients with denture bases fabricated by conventional heat curing acrylic resin. The dimensional changes were assessed using digital caliper. Results. After the twelfth month, injection moulding acrylic resin had significantly the highest dimensional change followed by the conventional heat curing acrylic resin. There were no significant differences in the dimensions between the three types of denture base materials at normal mouth temperature, while, after hot tea drinking at 45°C, the dimensional change was significantly the highest in cobalt chrome metallic denture base group. Conclusion. Cobalt chrome metallic denture base has stable dimension compared to denture bases fabricated of acrylic resin but it was more affected by altered mouth temperature. The study was registered in the International Standard Randomized Controlled Trials Number (ISRCTN registry with study ID (ISRCTN94238244.

  16. Conversations about Curriculum Change: Mathematical Thinking and Team-Based Learning in a Discrete Mathematics Course

    Science.gov (United States)

    Paterson, Judy; Sneddon, Jamie

    2011-01-01

    This article reports on the learning conversations between a mathematician and a mathematics educator as they worked together to change the delivery model of a third year discrete mathematics course from a traditional lecture mode to team-based learning (TBL). This change prompted the mathematician to create team tasks which increasingly focused…

  17. The emergence of climate change mitigation action by society : An agent-based scenario discovery study

    NARCIS (Netherlands)

    Greeven, Sebastiaan; Kraan, O.D.E.; Chappin, E.J.L.; Kwakkel, J.H.

    2016-01-01

    Developing model-based narratives of society’s response to climate change is challenged by two factors. First, society’s response to possible future climate change is subject to many uncertainties. Second, we argue that society’s mitigation action emerge out of the actions and interactions of the

  18. As the Climate Changes: Intergenerational Action-Based Learning in Relation to Flood Education

    Science.gov (United States)

    Williams, Sara; McEwen, Lindsey J.; Quinn, Nevil

    2017-01-01

    It is a concern that children represent an under-researched group in flood education and preparedness because as adults they are more likely to experience flooding as the climate changes, and because it suggests their potential today, as agents of change, is being undervalued. Using action-based, participatory methodology with seven to…

  19. Experiential-Based Climate Change Education: Fostering Students' Knowledge and Motivation towards the Environment

    Science.gov (United States)

    Karpudewan, Mageswary; Mohd Ali Khan, Nur Sabrina

    2017-01-01

    Climate change is one of the most important environmental issues affecting our society today and we need to educate the citizens about the impact on human lives. An attempt was made to integrate experiential-based climate change education into the teaching and learning of secondary school Biology lessons on the topic of "Endangered…

  20. Climate Masters of Nebraska: An Innovative Action-Based Approach for Climate Change Education

    Science.gov (United States)

    Pathak, Tapan B.; Bernadt, Tonya; Umphlett, Natalie

    2014-01-01

    Climate Masters of Nebraska is an innovative educational program that strategically trains community volunteers about climate change science and corresponding ways to reduce greenhouse gas emissions in an interactive and action-based teaching environment. As a result of the program, 91% of participants indicated that they made informed changes in…

  1. Learning to Lead Organizational Change: Assessment of a Problem-Based Simulation in Thailand

    Science.gov (United States)

    Hallinger, Philip; Lu, Jiafang; Showanasai, Parinya

    2010-01-01

    This paper presents findings of a study that evaluated the instructional effectiveness of a problem-based learning module constructed around a computer simulation, "Making Change Happen"[TM]. The "Leading Organizational Change" (LOC) course sought to enable students in a graduate management program in Thailand to learn to lead…

  2. An Inquiry-Based Science Activity Centred on the Effects of Climate Change on Ocean Ecosystems

    Science.gov (United States)

    Boaventura, Diana; Guilherme, Elsa; Faria, Cláudia

    2016-01-01

    We propose an inquiry-based science activity centred on the effects of climate change on ocean ecosystems. This activity can be used to improve acquisition of knowledge on the effects of climate change and to promote inquiry skills, such as researching, reading and selecting relevant information, identifying a problem, focusing on a research…

  3. An Inquiry-Based Science Activity Centred on the Effects of Climate Change on Ocean Ecosystems

    Science.gov (United States)

    Boaventura, Diana; Guilherme, Elsa; Faria, Cláudia

    We propose an inquiry-based science activity centred on the effects of climate change on ocean ecosystems. This activity can be used to improve acquisition of knowledge on the effects of climate change and to promote inquiry skills, such as researching, reading and selecting relevant information, identifying a problem, focusing on a research…

  4. Escolha de modo no acesso terrestre a aeroportos considerando a confiabilidade do tempo de viagem

    Directory of Open Access Journals (Sweden)

    Bianca Bianchi Alves

    2011-09-01

    Full Text Available

    Resumo: O objetivo do trabalho é identificar variações sistemáticas da importância atribuída por viajantes aéreos aos fatores que influenciam a escolha de modo para acesso terrestre ao Aeroporto Internacional de São Paulo. A análise utilizou dados de uma pesquisa de preferência declarada conduzida com residentes na região viajando para destinos internacionais. Os indivíduos ordenavam 4 alternativas: automóvel, táxi, ônibus expresso existente e um trem expresso proposto, descritas pelos atributos de custo, tempo esperado de viagem e confiabilidade do tempo de viagem, expressa através de uma margem de segurança. Modelos de escolha discreta foram estimados, considerando os efeitos de painel, aninhamento e de inércia. Os resultados indicaram que viajantes a negócios e de alta renda são menos sensíveis ao custo da viagem de acesso ao aeroporto. A importância da confiabilidade do tempo de viagem é maior do que a atribuída ao tempo esperado de viagem e não foi afetada por variações sistemáticas.

    Palavras-chave: valor de confiabilidade; acesso terrestre a aeroportos; escolha de modo; modelo logit misto; preferência declarada.

    Abstract: The paper analyses systematic variation of tastes and preferences of air travelers regarding the choice of mode for the ground access to the São Paulo International Airport. A stated preference survey was conducted with individuals traveling to international destinations. Each respondent ranked 4 alternatives: auto, taxi, the existing express bus, and a proposed express train. Attributes describing modes were travel cost, average travel time and travel time reliability, expressed as a safety margin – the time period allocated by the individual for arriving at the airport at the preferred time. Discrete mode choice models were estimated, considering panel, nesting and inertia effects. Results indicated that business and higher income

  5. Vivenciando o tempo livre em Shopping Center : um estudo qualitativo sobre idosos na cidade de Fortaleza

    OpenAIRE

    Lima, Hommel Pinheiro

    2013-01-01

    Este estudo teve como objetivo geral investigar os motivos que levam o idoso a vivenciar seu tempo livre em Shopping Center na cidade de Fortaleza. Trata-se de pesquisa qualitativa de caráter exploratório e descritivo, com embasamento teórico na abordagem da representação social, desenvolvida mediante a aplicação de entrevistas semiestruturadas individuais com quarenta idosos frequentadores do Shopping CenterUm, cujos dados foram tratados com a técnica da análise do discurso. Evidenciou-se qu...

  6. Thomas Merton: itinerarium da vida contemplativa no tempo e na história

    OpenAIRE

    Pereira, Sibélius Cefas

    2012-01-01

    O trabalho propõe-se a aprofundar o tema da vida contemplativa em Thomas Merton, reconhecendo que a categoria contemplação, mais do que um tema foi um eixo em torno do qual girou toda a sua obra. A tese central é a de que Merton reinaugura um caminho místico e contemplativo de busca e encontro com Deus no tempo e na história. A Realidade divina e a realidade humana como realidades convergentes. Na primeira parte abordou-se o tema da contemplação como experiência de plenitude de vida em três d...

  7. Adolescência e laço social: uma busca no tempo

    OpenAIRE

    Roselene Gurski; Marcelo de Andrade Pereira

    2012-01-01

    Este artigo problematiza as questões da adolescência contemporânea, desde a perspectiva da psicanálise e do conceito de experiência e transmissão em Walter Benjamin. Através da análise do filme “Uma vida iluminada”, os autores demonstram o quanto o tema do tempo é um operador potente para problematizar a constituição do sujeito adolescente no laço social atual. Abstract: This article discusses the issues of contemporary adolescence from the point of view of psychoanalysis and the concept ...

  8. Cut-off effect of radical TEMPO derivatives in olive oil-in-water emulsions.

    Science.gov (United States)

    Lopez de Arbina, Amaia; Rezende, Marcos Caroli; Aliaga, Carolina

    2017-06-01

    Three oil-in-water emulsions were prepared from mixtures of olive oil and Tween 20 in water. The effectiveness of a series of radical 2,2,6,6-tetramethylpiperidinoxyl (TEMPO) derivatives of variable lipophilicity in reactions with antioxidant Trolox, and as pyrene-fluorescence quenchers, was compared in the three emulsions. A "cut-off" effect was observed for the pyrene quenching by the probes, but not for their reaction with Trolox. The results were rationalized in terms of the amphiphobic nature of the probes, and the different locations of probe, pyrene and Trolox in the three-phase microheterogeneous systems. Copyright © 2016 Elsevier Ltd. All rights reserved.

  9. The importance of activity-based costing method (ABC) In Romania's business environment changes

    OpenAIRE

    Căpuşneanu, Sorinel/I; Cokins, Gary; Barbu, Cristian Marian

    2011-01-01

    The purpose of this paper is to present the importance of Activity-Based Costing method (ABC) in Romania's business environment changes. We analyzed the possibilities to adapt to a modern management accounting method and managerial accounting organization assumptions of the ABC (Activity-Based Costing) method in Romanian enterprises. The article ends with the authors' conclusions about the changes of the ABC method in the Romanian’s business environment.

  10. Investigating Climate Change Issues With Web-Based Geospatial Inquiry Activities

    Science.gov (United States)

    Dempsey, C.; Bodzin, A. M.; Sahagian, D. L.; Anastasio, D. J.; Peffer, T.; Cirucci, L.

    2011-12-01

    In the Environmental Literacy and Inquiry middle school Climate Change curriculum we focus on essential climate literacy principles with an emphasis on weather and climate, Earth system energy balance, greenhouse gases, paleoclimatology, and how human activities influence climate change (http://www.ei.lehigh.edu/eli/cc/). It incorporates a related set of a framework and design principles to provide guidance for the development of the geospatial technology-integrated Earth and environmental science curriculum materials. Students use virtual globes, Web-based tools including an interactive carbon calculator and geologic timeline, and inquiry-based lab activities to investigate climate change topics. The curriculum includes educative curriculum materials that are designed to promote and support teachers' learning of important climate change content and issues, geospatial pedagogical content knowledge, and geographic spatial thinking. The curriculum includes baseline instructional guidance for teachers and provides implementation and adaptation guidance for teaching with diverse learners including low-level readers, English language learners and students with disabilities. In the curriculum, students use geospatial technology tools including Google Earth with embedded spatial data to investigate global temperature changes, areas affected by climate change, evidence of climate change, and the effects of sea level rise on the existing landscape. We conducted a designed-based research implementation study with urban middle school students. Findings showed that the use of the Climate Change curriculum showed significant improvement in urban middle school students' understanding of climate change concepts.

  11. Improving Change Detection in Forest Areas Based on Stereo Panchromatic Imagery Using Kernel MNF

    DEFF Research Database (Denmark)

    Tian, Jiaojiao; Nielsen, Allan Aasbjerg; Reinartz, Peter

    2014-01-01

    The goal of this paper is to develop an efficient method for forest change detection using multitemporal stereo panchromatic imagery. Due to the lack of spectral information, it is difficult to extract reliable features for forest change monitoring. Moreover, the forest changes often occur together...... imagery are used to provide information on height difference, which is additionally used to separate forest changes from other land-cover changes. With very few training samples, a change mask is generated with iterated canonical discriminant analysis (ICDA). Two examples are presented to illustrate...... the approach and demonstrate its efficiency. It is shown that with the same amount of training samples, the proposed method can obtain more accurate change masks compared with algorithms based on k-means, one-class support vector machine, and random forests....

  12. Organizational transformation: a model for joint optimization of culture change and evidence-based design.

    Science.gov (United States)

    Hamilton, D Kirk; Orr, Robin Diane; Raboin, W Ellen

    2008-01-01

    Healthcare organizations face continuous and accelerating external change and thus must be prepared to manage their own change initiatives proactively. Given that many believe that the U.S. healthcare system is broken and most healthcare organizations are dealing with pervasive problems, some organizations may choose to seek transformational change to achieve the six aims identified by the Institute of Medicine: healthcare that is safe, effective, patient-centered, timely, efficient, and equitable. Transformational change will almost certainly involve organizational culture. Culture change may be most effective when linked to other organizational change initiatives such as organizational strategy, structure, policies, procedures, and recruiting. Significant organizational change often requires accompanying facility change. There is an interdependent relationship between facility design and organizational culture. They affect each other and both impact organizational performance. Sociotechnical theory promotes joint optimization of the social (culture) and technical (facilities) aspects of an organization to achieve sustained positive change. To achieve organizational transformation and to sustain positive change, organizations must be prepared to adopt collaborative efforts in culture change and facility design. The authors propose a model for accomplishing joint optimization of culture change and evidence-based facility design.

  13. Modeling technological change in energy systems - From optimization to agent-based modeling

    Energy Technology Data Exchange (ETDEWEB)

    Ma, Tieju [School of Business, East China University of Science and Technology, Meilong Road 130, Shanghai 200237 (China); Transition to New Technology Program, International Institute for Applied Systems Analysis, Schlossplatz 1, A-2361 Laxenburg (Austria); Nakamori, Yoshiteru [School of Knowledge Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292 (Japan)

    2009-07-15

    Operational optimization models are one of the main streams in modeling energy systems. Agent-based modeling and simulation seem to be another approach getting popular in this field. In either optimization or agent-based modeling practices, technological change in energy systems is a very important and inevitable factor that researchers need to deal with. By introducing three stylized models, namely, a traditional optimization model, an optimization model with endogenous technological change, and an agent-based model, all of which were developed based on the same deliberately simplified energy system, this paper compares how technological change is treated differently in different modeling practices for energy systems, the different philosophies underlying them, and the advantages/disadvantages of each modeling practice. Finally, this paper identifies the different contexts suitable for applying optimization models and agent-based models in decision support regarding energy systems. (author)

  14. Aplicabilidade da metodologia de reação de polimerase em cadeia em tempo real na determinação do percentual de organismos geneticamente modificados em alimentos Applicability of the real-time polymerase chain reaction based-methods in quantification of genetically modified organisms in foods

    Directory of Open Access Journals (Sweden)

    Natália Eudes Fagundes de Barros

    2008-02-01

    2003, which requires labeling for all foods or food ingredients, with a stricter labeling threshold of 1%. Although polymerase chain reaction technology has some limitations, the high sensitivity and specificity explain why it has been the first choice of most analytical laboratories interested in detection of genetically modified organisms and their derived products. Among the currently available methods, polymerase chain reaction-based methods are accepted, considering the sensitivity and reliability for detection of genetically modified-derived material in routine analysis. In this paper, a review of currently available polymerase chain reaction methods for screening and quantifying genetically modified-derived ingredients is presented, discussing their applicability and limitations.

  15. Long-term gravity changes in Chinese mainland from GRACE and ground-based gravity measurements

    Directory of Open Access Journals (Sweden)

    Xing Lelin

    2011-08-01

    Full Text Available A long-term (9 years gravity change in Chinese mainland is obtained on the basis of observations of the ground-based national gravity network. The result shows several features that may be related to some large-scale groundwater pumping in North China, glacier-water flow and storage in Tianshan region, and pre-seismic gravity changes of the 2008 Ms8.0 Wenchuan earthquake, which are spatially similar to co-seismic changes but reversed in sign. These features are also shown in the result of the satellite-based GRACE observation, after a height effect is corrected with GPS data.

  16. Sluggish cognitive tempo predicts a different pattern of impairment in the attention deficit hyperactivity disorder, predominantly inattentive type.

    Science.gov (United States)

    Carlson, Caryn L; Mann, Miranda

    2002-03-01

    Compared 2 groups of children with attention deficit hyperactivity disorder, predominantly inattentive type (ADHD/IA)--those with high scores on a composite measure of sluggish cognitive tempo (SCT) and those without--using a large, school-based sample of children for which previous comparisons between ADHD subtypes have been reported. Although the 2 groups did not differ on level of attention or learning problems, high-SCT ADHD/IA children were rated by teachers as showing less externalizing behavior and higher levels of unhappiness, anxiety/depression, withdrawn behavior, and social dysfunction. Thus, SCT identifies a more homogeneous subgroup of ADHD/IA children who are, relative to the entire Diagnostic and Statistical Manual of Mental Disorders (4th ed. [DSM-IV]; American Psychiatric Association [APA], 1994) diagnosed ADHD/IA group, more similar to those classified in previous research as "attention deficit disorder without hyperactivity." These results support a reconsideration of SCT symptoms as a component of diagnostic criteria for a category of nonhyperactive attention deficit disorder.

  17. Mercury bioaccumulation in the food web of Three Gorges Reservoir (China): Tempo-spatial patterns and effect of reservoir management.

    Science.gov (United States)

    Li, Jun; Zhou, Qiong; Yuan, Gailing; He, Xugang; Xie, Ping

    2015-09-15

    Tempo-spatial patterns of mercury bioaccumulation and tropho-dynamics, and the potential for a reservoir effect were evaluated in the Three Gorges Reservoir (TGR, China) from 2011 to 2012, using total mercury concentrations (THg) and stable isotopes (δ(13)C and δ(15)N) of food web components (seston, aquatic invertebrates and fish). Hg concentrations in aquatic invertebrates and fish indicated a significant temporal trend associated with regular seasonal water-level manipulation. This includes water level lowering to allow for storage of water during the wet season (summer); a decrease of water levels from September to June providing a setting for flood storage. Hg concentrations in organisms were the highest after flooding. Higher Hg concentrations in fish were observed at the location farthest from the dam. Hg concentrations in water and sediment were correlated. Compared with the reservoirs of United States and Canada, TGR had lower trophic magnification factors (0.046-0.066), that are explained primarily by organic carbon concentrations in sediment, and the effect of "growth dilution". Based on comparison before and after the impoundment of TGR, THg concentration in biota did not display an obvious long-term reservoir effect due to (i) short time since inundation, (ii) regular water discharge associated with water-level regulation, and/or (iii) low organic matter content in the sediment. Copyright © 2015 Elsevier B.V. All rights reserved.

  18. Diasteromeric Effect on the Homolysis of the C–ON Bond in Alkoxyamines: A DFT Investigation of 1,3-Diphenylbutyl-TEMPO

    Directory of Open Access Journals (Sweden)

    Valérie Roubaud

    2010-09-01

    Full Text Available The rate constants kd of the homolysis of the C–ON bond in styryl dyads TEMPO-based alkoxyamines have recently been published (Li et al. Macromolecules 2006, 39, 9201. The diastereoisomers exhibited different values which were higher than for the unimer TEMPO-styryl alkoxyamine 1. At a first glance, the localization of the steric strain was not obvious. To decipher this problem, diastereoisomer models 2 (RR/SS and 3 (RS/SR, as well as the released alkyl radicals, were calculated at the B3LYP/6-31G(d level. It was revealed that the increase in kd from 1 to 3 was due to the compression (buttressing effect of the reactive center by the second styryl moiety. The difference in kd for the diastereoisomer was clearly an activation entropy effect DS≠ because the alkyl fragment of the RS/SR diastereoismer exhibited the same conformation as the released radical whereas the conformation for the RR/SS diastereoisomer was quite different and thus required the rotation of several bonds to reach the correct TS, which cost DS≠, and thus lowers kd.

  19. Change Detection Research Based on Multi-Temporal and Multi-Polarization PALSAR Data

    Science.gov (United States)

    Gu, Xinzhi; Chen, Erxue

    2016-08-01

    Synthetic aperture radar (SAR) image change detection is an important technique in the remote sensing area. Long time-series of high quality SAR data can be acquired from spaceborne and airborne SAR systems. In this paper, a logarithmic ratio technique is proposed for two-date multichannel SAR images using ALOS-2PALSAR(L-band SAR). The ratio image can relieve the influence of the speckle noise and improve the discrimination between changed and unchanged areas. Based on the ALOS-2PALSAR data, the paper presents a reliable way to monitor the forest change using Fisher transform and mathematical statistics and get the changed area.

  20. Changing from a Rules-based to a Principles-based Accounting Logic: A Review

    Directory of Open Access Journals (Sweden)

    Marta Silva Guerreiro

    2014-06-01

    Full Text Available We explore influences on unlisted companies when Portugal moved from a code law, rules-based accounting system, to a principles-based accounting system of adapted International Financial Reporting Standards (IFRS. Institutionalisation of the new principles-based system was generally facilitated by a socio-economic and political context that increasingly supported IFRS logic. This helped central actors gain political opportunity, mobilise important allies, and accommodate major protagonists. The preparedness of unlisted companies to adopt the new IFRS-based accounting system voluntarily was explained by their desire to maintain social legitimacy. However, it was affected negatively by the embeddedness of rule-based practices in the ‘old’ prevailing institutional logic.

  1. [Responses of vegetation changes to climatic variations in Panxi area based on the MODIS multispectral data].

    Science.gov (United States)

    Shao, Huai-Yong; Wu, Jin-Hui; Liu, Meng; Yang, Wu-Nian

    2014-01-01

    It is an important research area to quantitatively studying the relationship between global climatic change and vegetation change based on the remote sensing technology. Panxi area is the ecological barrier of the upper reaches of the Yangtze River, and it is essential for the stability of the ecological environment of Sichuan as well as that of the whole China. The present article analyzes the vegetation change in 2001-2008 and the relationship between vegetation change and climatic variations of Panxi area, based on MODIS multispectral data and meteorological data. The results indicate that NDVI is positively correlated with temperature and precipitation. The precipitation is the major factor that affects the change of vegetation in the Panxi region and the trend of NDVI is similar with autumn precipitation; while at the same time the influence of climate has a one-month-time-lag.

  2. The use of an evidence-based portfolio in the management of change in dental practice.

    Science.gov (United States)

    Hall, John

    2006-10-01

    In this paper the author gives his opinion about the problems of getting practices to change systems in order to institute clinical governance. There are many reasons why practices need to change and for this change to be monitored. This paper explains the need for change and the use of the evidence-based portfolio, which is produced by candidates for the Membership of the Faculty of General Dental Practice (UK) [MFGDP(UK)] examination. It can also be produced by individuals who are not taking the MFGDP(UK) examination in conjunction with the Faculty of General Dental Practice (UK)'s key skills programme. It provides a mechanism for demonstrating change and for assessing the quality of care provided by a general dental practice. The author concludes that the evidence-based portfolio will enable a practitioner to apply clinical governance in a practical way.

  3. Tempo excessivo diante da televisão e sua influência sobre o consumo alimentar de adolescentes

    Directory of Open Access Journals (Sweden)

    Carla Cristina ENES

    2016-06-01

    Full Text Available RESUMO Objetivo Investigar a associação entre o tempo diante da televisão e o consumo alimentar de adolescentes. Métodos Trata-se de estudo transversal com 815 adolescentes de ambos os sexos, de escolas públicas de Piracicaba, São Paulo. Foram obtidos dados sociodemográficos e antropométricos, bem como sobre o tempo despendido em frente à televisão e o consumo alimentar habitual. Este último foi obtido mediante aplicação do Questionário de Frequência Alimentar, avaliando-se a adequação do consumo (porções/dia de sete grupos alimentares conforme recomendação do Guia Alimentar Brasileiro. O tempo de televisão foi obtido a partir do total de horas diárias dedicadas a assistir à televisão, sendo classificadas duas categorias: 2 horas/dia. Utilizou-se o teste t de Student para avaliar a diferença de médias entre as variáveis contínuas. A relação entre variáveis independentes e tempo de televisão foi testada pela regressão de Poisson. Resultados Os adolescentes que permanecem mais tempo em frente à televisão consumiram mais leite e derivados (p=0,03, açúcares e doces (p=0,01 e refrigerante (p=0,02. Observou-se que o baixo consumo de frutas, assim como o consumo excessivo de doces, açúcares e refrigerantes e a menor idade, estavam associados ao maior tempo de televisão. Na análise multivariável, hábitos alimentares não saudáveis, como a baixa ingestão de frutas (p=0,014 e o consumo elevado de doces e açúcares (p=0,041, permaneceram independentemente associados ao tempo de televisão. Conclusão O tempo excessivo em frente à televisão se associou a hábitos alimentares inadequados. Os adolescentes que permanecem tempo excessivo em frente à televisão devem ser incentivados a adotar uma prática alimentar mais saudável, já que a alimentação inadequada e o sedentarismo, sobretudo em associação, aumentam o risco de doenças crônicas ainda na adolescência.

  4. Ripe for Change: Garden-Based Learning in Schools. Harvard Education Letter Impact Series

    Science.gov (United States)

    Hirschi, Jane S.

    2015-01-01

    "Ripe for Change: Garden-Based Learning in Schools" takes a big-picture view of the school garden movement and the state of garden-based learning in public K--8 education. The book frames the garden movement for educators and shows how school gardens have the potential to be a significant resource for teaching and learning. In this…

  5. Using Conceptual Change Texts with Analogies for Misconceptions in Acids and Bases

    Science.gov (United States)

    Cetingul, Ipek; Geban, Omer

    2011-01-01

    This study was conducted to explore the effectiveness of conceptual change oriented instruction over traditional instruction on students' understanding of acids and bases concept. Besides, effects of gender difference and science process skills on students' understanding of acids and bases were also investigated. Analysis of the results showed…

  6. Measuring individual significant change on the Beck Depression Inventory-II through IRT-based statistics

    NARCIS (Netherlands)

    Brouwer, Danny; Meijer, Rob; Zevalkink, J.

    2013-01-01

    Several researchers have emphasized that item response theory (IRT)-based methods should be preferred over classical approaches in measuring change for individual patients. In the present study we discuss and evaluate the use of IRT-based statistics to measure statistical significant individual

  7. 19 CFR 142.50 - Line Release data base corrections or changes.

    Science.gov (United States)

    2010-04-01

    ... 19 Customs Duties 2 2010-04-01 2010-04-01 false Line Release data base corrections or changes. 142...; DEPARTMENT OF THE TREASURY (CONTINUED) ENTRY PROCESS Line Release § 142.50 Line Release data base corrections... numbers or bond information on a Line Release Data Loading Sheet as soon as possible. Notification shall...

  8. Process-based models are required to manage ecological systems in a changing world

    Science.gov (United States)

    K. Cuddington; M.-J. Fortin; L.R. Gerber; A. Hastings; A. Liebhold; M. OConnor; C. Ray

    2013-01-01

    Several modeling approaches can be used to guide management decisions. However, some approaches are better fitted than others to address the problem of prediction under global change. Process-based models, which are based on a theoretical understanding of relevant ecological processes, provide a useful framework to incorporate specific responses to altered...

  9. Cloud-based computation for accelerating vegetation mapping and change detection at regional to national scales

    Science.gov (United States)

    Matthew J. Gregory; Zhiqiang Yang; David M. Bell; Warren B. Cohen; Sean Healey; Janet L. Ohmann; Heather M. Roberts

    2015-01-01

    Mapping vegetation and landscape change at fine spatial scales is needed to inform natural resource and conservation planning, but such maps are expensive and time-consuming to produce. For Landsat-based methodologies, mapping efforts are hampered by the daunting task of manipulating multivariate data for millions to billions of pixels. The advent of cloud-based...

  10. Pattern of students' conceptual change on magnetic field based on students' mental models

    Science.gov (United States)

    Hamid, Rimba; Widodo, Ari; Sopandi, Wahyu

    2017-05-01

    Students understanding about natural phenomena can be identified by analyzing their mental model. Changes in students' mental model are good indicator of students' conceptual change. This research aims at identifying students' conceptual change by analyzing changes in students' mental model. Participants of the study were twenty five elementary school students. Data were collected through throughout the lessons (prior to the lessons, during the lessons and after the lessons) based on students' written responses and individual interviews. Lessons were designed to facilitate students' conceptual change by allowing students to work in groups of students who have the similar ideas. Therefore, lessons were students-directed. Changes of students' ideas in every stage of the lessons were identified and analyzed. The results showed that there are three patterns of students' mental models, namely type of scientific (44%), analogous to everyday life (52%), and intuitive (4%). Further analyses of the pattern of their conceptual change identifies four different patterns, i.e. consistently correct (20%), consistently incomplete (16%), changing from incorrect to incomplete (8%), changing from incomplete to complete (32%), changing from complete to incorrect (4%), and changing from incorrect to complete (4%). This study suggest that the process of learning science does not move in a linear and progressive ways, rather they move in random and may move backward and forward.

  11. Properties of TEMPO-oxidized cellulose nanofiber by using aqueous counter collision

    Science.gov (United States)

    Hai, Le Van; Zhai, Lindong; Kim, Jung Woong; Choi, Eun-sik; Kim, Jaehwan

    2017-04-01

    Cellulose nanofiber (CNF) isolation from different resources influences the characteristics of the CNF. There are two methods to isolate CNFs, chemical and physical methods. This paper deals with a 2,2,6,6-tetramethylpiperidine- 1-oxylradical (TEMPO-oxidation) chemical method and aqueous counter collision physical method to isolate CNFs. TEMPO-oxidized cellulose nanofiber was isolated using an aqueous counter collision method from two cellulose resource including Softwood bleached kraft pulp (SW) and Hardwood bleached kraft pulp (HW) resources. The CNFs properties were studied by atomic force microscopy, cross-polarize light and UV visible spectrometer. The width of the isolated CNFs is in the range of 15 nm to 20 nm and the length of cellulose nanofibers is around 1000 nm. The HW-CNF offers better transmittance than the SW-CNF. High transmittance of CNF films from both SWCNF and HW-CNF was observed. In addition, the birefringence of CNFs was observed under cross polarized light. The SW-CNF and HW-CNF films showed birefringence phenomenon. More clear iridescence color of HW-CNF sample than that of SW-CNF case.

  12. Production of TEMPO by O atoms in atmospheric pressure non-thermal plasma–liquid interactions

    Science.gov (United States)

    Elg, Daniel T.; Yang, I.-Wei; Graves, David B.

    2017-11-01

    Non-thermal atmospheric pressure plasmas enable plasma treatment of surfaces without requiring a low-pressure environment. These plasmas are currently of interest for, among other things, their biomedical applications, many of which are enabled by production of reactive oxygen and nitrogen species (RONS). Plasma–liquid interactions are especially important due to the high amounts of water in biological materials. However, the chemistries of these plasmas are very complex and are not well-understood. One method to quantify plasma–liquid interactions is to dissolve a reactant into the liquid which, when exposed to plasma-created RONS, forms a measurable product. In particular, the oxidation of the spin trap TEMP to TEMPO has been used to track trends in reactive oxygen species. However, the effect of individual species on TEMP has not previously been determined. This paper differentiates the oxidation of TEMP due to various oxygen species produced by a He plasma jet operating in a controllable environment. Oxidation of TEMP is mainly to O atoms, with small or negligible contributions from other species. Thus, the TEMPO yield will also be used to illuminate trends in O atom production.

  13. EPR spectroscopy applied to the study of the TEMPO mediated oxidation of nanocellulose.

    Science.gov (United States)

    Buffa, Juan M; Grela, María Alejandra; Aranguren, Mirta I; Mucci, Verónica

    2016-01-20

    Two different methods of pH control were used in the synthesis of 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) oxidized cellulose nanocrystals (CNC) and the reaction kinetics and degree of oxidation were investigated. In method I the media pH was controlled by addition of NaOH solution. The effect of the oxidant concentration (sodium hypochloride, NaClO) on the final degree of oxidation and crystallinity of the samples was investigated. Conditions for obtaining an optimum balance between high crystallinity and degree of oxidation were selected from those results. In method II, pH was fixed by using a buffer solution. Electron spin resonance (ESR) spectroscopy offered direct information of the decay of TEMPO concentration under these conditions. The kinetics of the reaction was determined, finding a direct correlation between these results and those corresponding to the decay of the NaClO concentration and the advance of the CNC degree of oxidation. Differences found between the two methods were analyzed. Copyright © 2015 Elsevier Ltd. All rights reserved.

  14. Fluorescence quenching of fluoroquinolone antibiotics by 4-hydroxy-TEMPO in aqueous solution.

    Science.gov (United States)

    Żamojć, Krzysztof; Wiczk, Wiesław; Zaborowski, Bartłomiej; Makowski, Mariusz; Pranczk, Joanna; Jacewicz, Dagmara; Chmurzyński, Lech

    2014-12-10

    The fluorescence quenching of norfloxacin, danofloxacin, enrofloxacin and levofloxacin, belonging to a group of fluoroquinolone antibiotics, by 4-hydroxy-TEMPO was studied in aqueous solutions with the use of steady-state, time-resolved fluorescence spectroscopy as well as UV-VIS absorption spectroscopy methods. In order to understand the mechanism of quenching the absorption and fluorescence emission spectra of all fluoroquinolone antibiotics studied as well as decreases of their fluorescence were registered as a function of the 4-hydroxy-TEMPO concentration. No deviations from a linearity in the Stern-Volmer plots (determined from both, steady-state and time-resolved measurements) were observed. The fluorescence quenching mechanism was proved to be totally dynamic, what was additionally confirmed by the registration of Stern-Volmer plots at 5 temperatures ranging from 15 to 55°C. On the basis of theoretical calculations of fluoroquinolones' molecular radii and ionization potentials the mechanism of electron transfer was rejected. It seems that the fluorescence quenching is diffusion-limited and is caused by the increase of nonradiative processes, such as internal conversion or intersystem crossing. The Stern-Volmer quenching constants and bimolecular quenching constants were determined at the room temperature for all fluoroquinolone antibiotics studied. Copyright © 2014 Elsevier B.V. All rights reserved.

  15. CALM: Complex Adaptive System (CAS)-Based Decision Support for Enabling Organizational Change

    Science.gov (United States)

    Adler, Richard M.; Koehn, David J.

    Guiding organizations through transformational changes such as restructuring or adopting new technologies is a daunting task. Such changes generate workforce uncertainty, fear, and resistance, reducing morale, focus and performance. Conventional project management techniques fail to mitigate these disruptive effects, because social and individual changes are non-mechanistic, organic phenomena. CALM (for Change, Adaptation, Learning Model) is an innovative decision support system for enabling change based on CAS principles. CALM provides a low risk method for validating and refining change strategies that combines scenario planning techniques with "what-if" behavioral simulation. In essence, CALM "test drives" change strategies before rolling them out, allowing organizations to practice and learn from virtual rather than actual mistakes. This paper describes the CALM modeling methodology, including our metrics for measuring organizational readiness to respond to change and other major CALM scenario elements: prospective change strategies; alternate futures; and key situational dynamics. We then describe CALM's simulation engine for projecting scenario outcomes and its associated analytics. CALM's simulator unifies diverse behavioral simulation paradigms including: adaptive agents; system dynamics; Monte Carlo; event- and process-based techniques. CALM's embodiment of CAS dynamics helps organizations reduce risk and improve confidence and consistency in critical strategies for enabling transformations.

  16. Brain structural changes following adaptive cognitive training assessed by Tensor-Based Morphometry (TBM).

    Science.gov (United States)

    Colom, Roberto; Hua, Xue; Martínez, Kenia; Burgaleta, Miguel; Román, Francisco J; Gunter, Jeffrey L; Carmona, Susanna; Jaeggi, Susanne M; Thompson, Paul M

    2016-10-01

    Tensor-Based Morphometry (TBM) allows the automatic mapping of brain changes across time building 3D deformation maps. This technique has been applied for tracking brain degeneration in Alzheimer's and other neurodegenerative diseases with high sensitivity and reliability. Here we applied TBM to quantify changes in brain structure after completing a challenging adaptive cognitive training program based on the n-back task. Twenty-six young women completed twenty-four training sessions across twelve weeks and they showed, on average, large cognitive improvements. High-resolution MRI scans were obtained before and after training. The computed longitudinal deformation maps were analyzed for answering three questions: (a) Are there differential brain structural changes in the training group as compared with a matched control group? (b) Are these changes related to performance differences in the training program? (c) Are standardized changes in a set of psychological factors (fluid and crystallized intelligence, working memory, and attention control) measured before and after training, related to structural changes in the brain? Results showed (a) greater structural changes for the training group in the temporal lobe, (b) a negative correlation between these changes and performance across training sessions (the greater the structural change, the lower the cognitive performance improvements), and (c) negligible effects regarding the psychological factors measured before and after training. Copyright © 2016 Elsevier Ltd. All rights reserved.

  17. TEMPO-Appended Metal-Organic Frameworks as Highly Active, Selective, and Reusable Catalysts for Mild Aerobic Oxidation of Alcohols.

    Science.gov (United States)

    Zwoliński, Krzysztof M; Chmielewski, Michał J

    2017-10-04

    Metal-organic frameworks (MOFs) decorated with stable organic radicals are highly promising materials for redox catalysis. Unfortunately however, the synthesis of chemically robust MOFs typically requires harsh solvothermal conditions, which are not compatible with organic radicals. Here, we describe the synthesis of two isoreticular families of stable, mixed component, zirconium MOFs with UiO-66 and UiO-67 structures and controlled amounts of covalently attached TEMPO radicals. The materials were obtained using a relatively low-temperature, HCl-modulated de novo method developed by Hupp and Farha and shown to contain large amounts of missing cluster defects, forming nanodomains of the reo phase with 8-connected clusters. In the extreme case of homoleptic UiO-67-TEMPO(100%), the material exists as an almost pure reo phase. Large voids due to missing clusters and linkers allowed these materials to accommodate up to 2 times more of bulky TEMPO substituents than theoretically predicted for the idealized structures and proved to be beneficial for catalytic activity. The TEMPO-appended MOFs were shown to be highly active and recyclable catalysts for selective aerobic oxidation of a broad range of primary and secondary alcohols under exceptionally mild conditions (room temperature, atmospheric pressure of air). The influence of various parameters, including the pore size and TEMPO content, on the catalytic activity was also comprehensively investigated.

  18. One-Step Cationic Grafting of 4-Hydroxy-TEMPO and its Application in a Hybrid Redox Flow Battery with a Crosslinked PBI Membrane.

    Science.gov (United States)

    Chang, Zhenjun; Henkensmeier, Dirk; Chen, Ruiyong

    2017-08-24

    By using a one-step epoxide ring-opening reaction between 4-hydroxy-2,2,6,6-tetramethylpiperidine 1-oxyl (4-hydroxy-TEMPO) and glycidyltrimethylammonium cation (GTMA + ), we synthesized a cation-grafted TEMPO (g + -TEMPO) and studied its electrochemical performance against a Zn 2+ /Zn anode in a hybrid redox flow battery. To conduct Cl - counter anions, a crosslinked methylated polybenzimidazole (PBI) membrane was prepared and placed between the catholyte and anolyte. Compared to 4-hydroxy-TEMPO, the positively charged g + - TEMPO exhibits enhanced reaction kinetics. Moreover, flow battery tests with g + -TEMPO show improved Coulombic, voltage, and energy efficiencies and cycling stability over 140 cycles. Crossover of active species through the membrane was not detected. © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

  19. Frequency patterns of semantic change: corpus-based evidence of a near-critical dynamics in language change.

    Science.gov (United States)

    Feltgen, Q; Fagard, B; Nadal, J-P

    2017-11-01

    It is generally believed that when a linguistic item acquires a new meaning, its overall frequency of use rises with time with an S-shaped growth curve. Yet, this claim has only been supported by a limited number of case studies. In this paper, we provide the first corpus-based large-scale confirmation of the S-curve in language change. Moreover, we uncover another generic pattern, a latency phase preceding the S-growth, during which the frequency remains close to constant. We propose a usage-based model which predicts both phases, the latency and the S-growth. The driving mechanism is a random walk in the space of frequency of use. The underlying deterministic dynamics highlights the role of a control parameter which tunes the system at the vicinity of a saddle-node bifurcation. In the neighbourhood of the critical point, the latency phase corresponds to the diffusion time over the critical region, and the S-growth to the fast convergence that follows. The durations of the two phases are computed as specific first-passage times, leading to distributions that fit well the ones extracted from our dataset. We argue that our results are not specific to the studied corpus, but apply to semantic change in general.

  20. #CCV- > KV-: CORPUS-BASED EVIDENCE OF HISTORICAL CHANGE IN ENGLISH PHONOTACTICS

    Directory of Open Access Journals (Sweden)

    Daniel Schreier

    2005-06-01

    Full Text Available This paper examines modifications in the phonotactic system of English, as attested in changes that affected the tactic behaviour of individual consonants. This is exemplified by the loss of initial clusters in English (#CC- > #C-, which resulted in a merger of the cluster with a single consonant and effectively changed the syllable structure to CV-; this affected initial clusters such as */kn-1, */wl-1 or */hr-/. A corpus-based study traces these changes and dates them to various periods of the historical evolution of English. The findings suggest that multiple causations can be put forward to explain phonotactic change in English, including continuation of changes inherited from Germanic (and completed in Middle English, putative contact influence with Norman French, as well as local, independent innovation. Moreover, the trajectory of loss is traced also, which indicates that phonotactic change proceeds in similar fashion to other linguistic innovations (namely in an S-curve trajectory.

  1. Changes.

    Science.gov (United States)

    Weikel, William J.

    1999-01-01

    The author, founding editor of the American Mental Health Counselors Association (AMHC) Journal, now the Journal of Mental Health Counseling, examines some of the changes that have taken place in the profession over the past 20 years. Special emphasis is given to the visionary excellence that set the "AMHCA Agenda" over 20 years ago.…

  2. Linear and volumetric dimensional changes of injection-molded PMMA denture base resins.

    Science.gov (United States)

    El Bahra, Shadi; Ludwig, Klaus; Samran, Abdulaziz; Freitag-Wolf, Sandra; Kern, Matthias

    2013-11-01

    The aim of this study was to evaluate the linear and volumetric dimensional changes of six denture base resins processed by their corresponding injection-molding systems at 3 time intervals of water storage. Two heat-curing (SR Ivocap Hi Impact and Lucitone 199) and four auto-curing (IvoBase Hybrid, IvoBase Hi Impact, PalaXpress, and Futura Gen) acrylic resins were used with their specific injection-molding technique to fabricate 6 specimens of each material. Linear and volumetric dimensional changes were determined by means of a digital caliper and an electronic hydrostatic balance, respectively, after water storage of 1, 30, or 90 days. Means and standard deviations of linear and volumetric dimensional changes were calculated in percentage (%). Statistical analysis was done using Student's and Welch's t tests with Bonferroni-Holm correction for multiple comparisons (α=0.05). Statistically significant differences in linear dimensional changes between resins were demonstrated at all three time intervals of water immersion (p≤0.05), with exception of the following comparisons which showed no significant difference: IvoBase Hi Impact/SR Ivocap Hi Impact and PalaXpress/Lucitone 199 after 1 day, Futura Gen/PalaXpress and PalaXpress/Lucitone 199 after 30 days, and IvoBase Hybrid/IvoBase Hi Impact after 90 days. Also, statistically significant differences in volumetric dimensional changes between resins were found at all three time intervals of water immersion (p≤0.05), with exception of the comparison between PalaXpress and Futura Gen. Denture base resins (IvoBase Hybrid and IvoBase Hi Impact) processed by the new injection-molding system (IvoBase), revealed superior dimensional precision. Copyright © 2013 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.

  3. Autonomic effects of music in health and Crohn's disease: the impact of isochronicity, emotional valence, and tempo.

    Science.gov (United States)

    Krabs, Roland Uwe; Enk, Ronny; Teich, Niels; Koelsch, Stefan

    2015-01-01

    Music can evoke strong emotions and thus elicit significant autonomic nervous system (ANS) responses. However, previous studies investigating music-evoked ANS effects produced inconsistent results. In particular, it is not clear (a) whether simply a musical tactus (without common emotional components of music) is sufficient to elicit ANS effects; (b) whether changes in the tempo of a musical piece contribute to the ANS effects; (c) whether emotional valence of music influences ANS effects; and (d) whether music-elicited ANS effects are comparable in healthy subjects and patients with Crohn´s disease (CD, an inflammatory bowel disease suspected to be associated with autonomic dysfunction). To address these issues, three experiments were conducted, with a total of n = 138 healthy subjects and n = 19 CD patients. Heart rate (HR), heart rate variability (HRV), and electrodermal activity (EDA) were recorded while participants listened to joyful pleasant music, isochronous tones, and unpleasant control stimuli. Compared to silence, both pleasant music and unpleasant control stimuli elicited an increase in HR and a decrease in a variety of HRV parameters. Surprisingly, similar ANS effects were elicited by isochronous tones (i.e., simply by a tactus). ANS effects did not differ between pleasant and unpleasant stimuli, and different tempi of the music did not entrain ANS activity. Finally, music-evoked ANS effects did not differ between healthy individuals and CD patients. The isochronous pulse of music (i.e., the tactus) is a major factor of music-evoked ANS effects. These ANS effects are characterized by increased sympathetic activity. The emotional valence of a musical piece contributes surprisingly little to the ANS activity changes evoked by that piece.

  4. Autonomic effects of music in health and Crohn's disease: the impact of isochronicity, emotional valence, and tempo.

    Directory of Open Access Journals (Sweden)

    Roland Uwe Krabs

    Full Text Available Music can evoke strong emotions and thus elicit significant autonomic nervous system (ANS responses. However, previous studies investigating music-evoked ANS effects produced inconsistent results. In particular, it is not clear (a whether simply a musical tactus (without common emotional components of music is sufficient to elicit ANS effects; (b whether changes in the tempo of a musical piece contribute to the ANS effects; (c whether emotional valence of music influences ANS effects; and (d whether music-elicited ANS effects are comparable in healthy subjects and patients with Crohn´s disease (CD, an inflammatory bowel disease suspected to be associated with autonomic dysfunction.To address these issues, three experiments were conducted, with a total of n = 138 healthy subjects and n = 19 CD patients. Heart rate (HR, heart rate variability (HRV, and electrodermal activity (EDA were recorded while participants listened to joyful pleasant music, isochronous tones, and unpleasant control stimuli.Compared to silence, both pleasant music and unpleasant control stimuli elicited an increase in HR and a decrease in a variety of HRV parameters. Surprisingly, similar ANS effects were elicited by isochronous tones (i.e., simply by a tactus. ANS effects did not differ between pleasant and unpleasant stimuli, and different tempi of the music did not entrain ANS activity. Finally, music-evoked ANS effects did not differ between healthy individuals and CD patients.The isochronous pulse of music (i.e., the tactus is a major factor of music-evoked ANS effects. These ANS effects are characterized by increased sympathetic activity. The emotional valence of a musical piece contributes surprisingly little to the ANS activity changes evoked by that piece.

  5. Autonomic Effects of Music in Health and Crohn's Disease: The Impact of Isochronicity, Emotional Valence, and Tempo

    Science.gov (United States)

    Krabs, Roland Uwe; Enk, Ronny; Teich, Niels; Koelsch, Stefan

    2015-01-01

    Background Music can evoke strong emotions and thus elicit significant autonomic nervous system (ANS) responses. However, previous studies investigating music-evoked ANS effects produced inconsistent results. In particular, it is not clear (a) whether simply a musical tactus (without common emotional components of music) is sufficient to elicit ANS effects; (b) whether changes in the tempo of a musical piece contribute to the ANS effects; (c) whether emotional valence of music influences ANS effects; and (d) whether music-elicited ANS effects are comparable in healthy subjects and patients with Crohn´s disease (CD, an inflammatory bowel disease suspected to be associated with autonomic dysfunction). Methods To address these issues, three experiments were conducted, with a total of n = 138 healthy subjects and n = 19 CD patients. Heart rate (HR), heart rate variability (HRV), and electrodermal activity (EDA) were recorded while participants listened to joyful pleasant music, isochronous tones, and unpleasant control stimuli. Results Compared to silence, both pleasant music and unpleasant control stimuli elicited an increase in HR and a decrease in a variety of HRV parameters. Surprisingly, similar ANS effects were elicited by isochronous tones (i.e., simply by a tactus). ANS effects did not differ between pleasant and unpleasant stimuli, and different tempi of the music did not entrain ANS activity. Finally, music-evoked ANS effects did not differ between healthy individuals and CD patients. Conclusions The isochronous pulse of music (i.e., the tactus) is a major factor of music-evoked ANS effects. These ANS effects are characterized by increased sympathetic activity. The emotional valence of a musical piece contributes surprisingly little to the ANS activity changes evoked by that piece. PMID:25955253

  6. Accurate Registration of the CHANG'E-1 Iim Data Based on Lro Lroc-Wac Mosica Data

    Science.gov (United States)

    Yang, Z.; Kang, Z.

    2017-07-01

    In the detection of the moon, the visible and near-infrared reflectance data of the lunar material are important information sources for lunar chemical substances and mineral inversion. The Interferometer Imaging Spectrometer (IIM) aboard the Chang'E-1 lunar orbiter is the first multispectral imaging spectrometer for Chinese lunar missions. In this paper, we use the mosaic image of global moon acquired by the Wide-angle Camera (WAC) of the Lunar Reconnaissance Orbiter Camera (LROC) to realize the accurate registration of Chang'E-1 IIM hyperspectral images. Due to the lack of GCPs, the emphasis of this work is to find a huge number of homologous points. The method proposed in this paper is to obtain several homologous points by manually matching, and then we utilize those points to calculate the initial homography matrix of LROC-WAC image and IIM image. This matrix is used to predict the area on IIM image where homologous points may be located, and the locations of the homologous points are determined by the orientation correlation in frequency domain. Finally we save the parts of homologous points which satisfied the conversion relationship of initial homography matrix to calculate homography matrix again. We use this iterative way to obtain a more accurate location of the homologous points. In this process, we take into account that the geometric deformations of different regions on IIM image are quite different. Therefore, we added image threshold segmentation based on the initial homography matrix in the experiment, and completed the above work of finding the homologous points on the segmented images. The final realization of registration accuracy of IIM images are in 1-2 pixels (RMSE). This provides a reliable data assurance for the subsequent study of using IIM images to inverse the lunar elements.

  7. A Chroma-based Tempo-insensitive Distance Measure for Cover Song Identification

    DEFF Research Database (Denmark)

    Jensen, Jesper Højvang; Ellis, Dan P. W.; Christensen, Mads Græsbøll

    In the context of music, a cover version is a remake of a song, often with significant stylistic variation. In this paper we describe a distance measure between sampled audio files that is designed to be insensitive to instrumentation, time shift, temporal scaling and transpositions. The algorithm...... was submitted to the Music Information Retrieval eXchange (MIREX) 2007 audio cover song identification task, where it came fourth of the eight submitted algorithms....

  8. Chemotherapy-related cognitive change: a principle-based concept analysis.

    Science.gov (United States)

    Kanaskie, Mary Louise

    2012-05-01

    To present the results of a principle-based concept analysis of cognitive change in patients with cancer following chemotherapy treatment. 86 English-language articles retrieved through OVID, PubMed, CINAHL®, and Web of Knowledge searches through June 2010. No time limits were imposed. Analysis was based on the philosophical principles: epistemologic, pragmatic, linguistic, and logical. Conceptual components were identified and a theoretical definition of chemotherapy-related cognitive change emerged; the term was not clearly defined or well differentiated in the scientific literature. Implicit meanings are found in patients' subjective accounts, descriptions of the cognitive domains studied, and the choice of neuropsychological assessment instruments. Antecedents relative to chemotherapy-related cognitive change include disease and treatment factors. Moderators may include anxiety, depression, and fatigue. Consequences or outcomes of the experience of chemotherapy-related cognitive change include adjustment to illness, impact on quality of life, and potential for emotional distress. The principle-based concept analysis generated conceptual insights about chemotherapy-related cognitive change that are based on sound scientific evidence. The product of this method of analysis is a theoretical definition that reflects the state of the science. When the impact of cognitive change following chemotherapy is better understood, meaningful and timely interventions can be developed to improve quality of life for cancer survivors.

  9. A Fairness-Based Access Control Scheme to Optimize IPTV Fast Channel Changing

    Directory of Open Access Journals (Sweden)

    Junyu Lai

    2014-01-01

    Full Text Available IPTV services are typically featured with a longer channel changing delay compared to the conventional TV systems. The major contributor to this lies in the time spent on intraframe (I-frame acquisition during channel changing. Currently, most widely adopted fast channel changing (FCC methods rely on promptly transmitting to the client (conducting the channel changing a retained I-frame of the targeted channel as a separate unicasting stream. However, this I-frame acceleration mechanism has an inherent scalability problem due to the explosions of channel changing requests during commercial breaks. In this paper, we propose a fairness-based admission control (FAC scheme for the original I-frame acceleration mechanism to enhance its scalability by decreasing the bandwidth demands. Based on the channel changing history of every client, the FAC scheme can intelligently decide whether or not to conduct the I-frame acceleration for each channel change request. Comprehensive simulation experiments demonstrate the potential of our proposed FAC scheme to effectively optimize the scalability of the I-frame acceleration mechanism, particularly in commercial breaks. Meanwhile, the FAC scheme only slightly increases the average channel changing delay by temporarily disabling FCC (i.e., I-frame acceleration for the clients who are addicted to frequent channel zapping.

  10. Object-Based Analysis of Airborne LiDAR Data for Building Change Detection

    Directory of Open Access Journals (Sweden)

    Shiyan Pang

    2014-11-01

    Full Text Available Building change detection is useful for land management, disaster assessment, illegal building identification, urban growth monitoring, and geographic information database updating. This study proposes an automatic method that applies object-based analysis to multi-temporal point cloud data to detect building changes. The aim of this building change detection method is to identify areas that have changed and to obtain from-to information. In this method, the data are first preprocessed to generate two sets of digital surface models (DSMs, digital elevation models, and normalized DSMs from registered old and new point cloud data. Thereafter, on the basis of differential DSM, candidates for changed building objects are identified from the points in the smooth areas by using a connected component analysis technique. The random sample consensus fitting algorithm is then used to distinguish the true changed buildings from trees. The changed building objects are classified as “newly built”, “taller”, “demolished” or “lower” by using rule-based analysis. Finally, a test data set consisting of many buildings of different types in an 8.5 km2 area is selected for the experiment. In the test data set, the method correctly detects 97.8% of buildings larger than 50 m2. The accuracy of the method is 91.2%. Furthermore, to decrease the workload of subsequent manual checking of the result, the confidence index for each changed object is computed on the basis of object features.

  11. Modelo de tempo de falha acelerado com fração de cura : uma abordagem unificada

    OpenAIRE

    Guedes, Alysson Lívio Vasconcelos

    2011-01-01

    Neste trabalho apresentamos um estudo sobre o modelo de tempo de falha acelerado gama generalizado com fração de cura sob uma abordagem unificada. O modelo se propõe a estimar simultaneamente o efeito de covariáveis na aceleração/desaceleração do tempo até a ocorrência de um evento e na fração de cura. O método e implementado no software estatístico livre R. Por fim o modelo e aplicado a dados reais referente ao tempo até o retorno da doença em pacientes diagnosticados com câncer de ...

  12. Exploring change in a group-based psychological intervention for multiple sclerosis patients.

    Science.gov (United States)

    Borghi, Martina; Bonino, Silvia; Graziano, Federica; Calandri, Emanuela

    2017-03-30

    The study is focused on a group-based cognitive behavioral intervention aimed at promoting the quality of life and psychological well-being of multiple sclerosis patients. The study investigates how the group intervention promoted change among participants and fostered their adjustment to the illness. The intervention involved six groups of patients (a total of 41 patients) and included four consecutive sessions and a 6-month follow-up. To explore change, verbatim transcripts of the intervention sessions were analyzed using a mixed-methods content analysis with qualitative data combined with descriptive statistics. The categories of resistance and openness to change were used to describe the process of change. Resistance and openness to change coexisted during the intervention. Only in the first session did resistance prevail over openness to change; thereafter, openness to change gradually increased and stabilized over time, and openness to change was then always stronger than resistance. The study builds on previous research on the effectiveness of group-based psychological interventions for multiple sclerosis patients and gives methodological and clinical suggestions to health care professionals working with multiple sclerosis patients. Implications for rehabilitation The study suggests that a group-based cognitive behavioral intervention for multiple sclerosis patients focused on the promotion of identity redefinition, a sense of coherence and self-efficacy in dealing with multiple sclerosis fosters the process of change and may be effective in promoting patients' adjustment to their illness. Health care professionals leading group-based psychological interventions for multiple sclerosis patients should be aware that resistance and openness to change coexist in the process of change. The study suggests that the duration of the intervention is a crucial factor: a minimum of three sessions appears to be necessary for group participants to develop greater openness

  13. Personalized cardiovascular risk management linking SCORE and behaviour change to Web-based education.

    Science.gov (United States)

    Davis, Selena; Abidi, Syed Sibte Raza; Cox, Jafna

    2006-01-01

    The PULSE (Personalization Using Linkages of SCORE and behaviour change readiness to web-based Education) project objectives are to generate and evaluate a web-based personalized educational intervention for the management of cardiovascular risk. The program is based on a patient profile generated by combining: (a) an electronic patient data capture template (DCT); (b) the Systematic COronary Risk Evaluation (SCORE) algorithm; and (c) a Stage of Change determination model. The DCT inherently contains a set of evidence-based parameters for patient description and disease evaluation. The patient's stage of behaviour change determines messages consistent with the individual's change processes, decisional balance, and self-efficacy. The interventions are designed to address both medical and psychosocial aspects of risk management and, as such, we combine staged lifestyle modification materials and non-staged messages based on Canadian clinical guidelines to motivate personal risk management. The personalization decision logic is represented in Medical Logic Modules implemented in Java. An intelligent interactive system generates the personally relevant materials and delivers the education to the patient via the Web. An evaluation study will be conducted to determine whether web-based personalized educational strategies exert favourable influence on patient's interest, knowledge, and perceived compliance to the suggested lifestyle modifications.

  14. Projected changes, climate change signal, and uncertainties in the CMIP5-based projections of ocean surface wave heights

    Science.gov (United States)

    Wang, Xiaolan; Feng, Yang; Swail, Val R.

    2016-04-01

    Ocean surface waves can be major hazards in coastal and offshore activities. However, wave observations are available only at limited locations and cover only the recent few decades. Also, there exists very limited information on ocean wave behavior in response to climate change, because such information is not simulated in current global climate models. In a recent study, we used a multivariate regression model with lagged dependent variable to make statistical global projections of changes in significant wave heights (Hs) using mean sea level pressure (SLP) information from 20 CMIP5 climate models for the twenty-first century. The statistical model was calibrated and validated using the ERA-Interim reanalysis of Hs and SLP for the period 1981-2010. The results show Hs increases in the tropics (especially in the eastern tropical Pacific) and in southern hemisphere high-latitudes. Under the projected 2070-2099 climate condition of the RCP8.5 scenario, the occurrence frequency of the present-day one-in-10-year extreme wave heights is likely to double or triple in several coastal regions around the world (e.g., the Chilean coast, Gulf of Oman, Gulf of Bengal, Gulf of Mexico). More recently, we used the analysis of variance approaches to quantify the climate change signal and uncertainty in multi-model ensembles of statistical Hs simulations globally, which are based on the CMIP5 historical, RCP4.5 and RCP8.5 forcing scenario simulations of SLP. In a 4-model 3-run ensemble, the 4-model common signal of climate change is found to strengthen over time, as would be expected. For the historical followed by RCP8.5 scenario, the common signal in annual mean Hs is found to be significant over 16.6%, 55.0% and 82.2% of the area by year 2005, 2050 and 2099, respectively. For the annual maximum, the signal is much weaker. The signal is strongest in the eastern tropical Pacific, featuring significant increases in both the annual mean and maximum of Hs in this region. The climate

  15. Histological changes in rabbits after application of medicaments and cosmetic bases. II.

    Science.gov (United States)

    Rantuccio, F; Sinisi, D; Scardigno, A; Coviello, C

    1981-03-01

    A further study of the topical effects of certain pharmaceutical and cosmetic bases on rabbit skin is reported. Cetyl alcohol, myristic acid, castor oil and sorbitol were applied in fixed doses daily for 30 days and their irritant activity was assessed. The macroscopic and microscopic changes were on the whole minimal. Castor oil alone produced some macroscopic alterations in the form of slight erythema and edema, and microscopic changes consisting of acanthosis, disorganization of the basal layer and slight infiltration of the dermis.

  16. Work-Based Research in a Large Organisation: The Transformation from Change Agent to Researcher

    Science.gov (United States)

    Kenny, John

    2009-01-01

    This paper is a reflection on my journey in a work-based (WB) research project while completing my PhD at a large Australian university. The paper explores issues that arose as I studied strategic change in the university and my role evolved from that of a "change agent" working as part of a project team to that of a researcher. A case…

  17. Evidence-Based Indicators of Neuropsychological Change in the Individual Patient: Relevant Concepts and Methods

    Science.gov (United States)

    Duff, Kevin

    2012-01-01

    Repeated assessments are a relatively common occurrence in clinical neuropsychology. The current paper will review some of the relevant concepts (e.g., reliability, practice effects, alternate forms) and methods (e.g., reliable change index, standardized based regression) that are used in repeated neuropsychological evaluations. The focus will be on the understanding and application of these concepts and methods in the evaluation of the individual patient through examples. Finally, some future directions for assessing change will be described. PMID:22382384

  18. Weight Gain Prevention: Identifying Theory-Based Targets for Health Behavior Change in Young Adults

    OpenAIRE

    Strong, Kathryn A; Parks, Serena L.; Anderson, Eileen; Winett, Richard; Davy, Brenda M.

    2008-01-01

    Young adults attending college are more vulnerable to weight gain than the general population. We sought to identify health behavior change targets related to weight management in college students. Based on the social cognitive theory model for health behavior change, we investigated the health-related lifestyle behaviors and physiological characteristics of this population. Forty-three college students (18.3±0.1 years) completed a series of quantitative assessments (body weight and compositi...

  19. Efeito do tempo de cura na rigidez de argamassas produzidas com cimento Portland Effect of the curing time on the stiffness of mortars produced with Portland cement

    Directory of Open Access Journals (Sweden)

    G. C. R. Garcia

    2011-03-01

    Full Text Available O concreto de cimento Portland é um dos materiais mais usados no mundo inteiro, entretanto, devido a sua estrutura ser muito complexa, torna-se imprescindível estudar suas propriedades com bastante profundidade. O concreto é produzido a partir de uma argamassa, de areia e cimento, com adição de agregados graúdos, sendo que suas propriedades estão basicamente suportadas nessa argamassa de constituição. O objetivo deste trabalho foi estudar a variação da rigidez de duas argamassas de composições com razão cimento:areia de 1:2 e 1:3 em função do tempo de cura, tendo como parâmetro a variação do módulo de Young. Os resultados mostraram que o módulo de Young cresce até atingir o valor máximo no oitavo dia, sendo que nos três primeiros dias esse crescimento é mais acentuado. A análise dos resultados indica que grande parte do processo de hidratação do cimento, com formação das ligações químicas responsáveis pela rigidez da argamassa, acontece nos primeiros dias de cura.Concrete produced with Portland cement is one of building materials most widely used worldwide. However, due to its highly complex structure, its properties require in-depth studies. Concrete is a mortar consisting of a mixture of cement, sand and coarse aggregates, and its properties are represented basically by the mortar base. The aim of this work was to study the change in stiffness of two mortar compositions cured at 25 ºC with a cement-to-sand ratio of 1:2 and 1:3, as a function of curing time using the variation of Young modulus as the measuring parameter. The results showed that Young modulus increases up to a maximum value on the 8th day, and that this increase is more pronounced during the first three days. An analysis of the results indicates that a large part of the cement hydration process, involving the formation of chemical bonds that are responsible for the mortar stiffness, takes place in the early days of curing.

  20. A utilização dos ditos populares e da observação do tempo para a Climatologia Escolar no Ensino Fundamental II

    Directory of Open Access Journals (Sweden)

    Diego Corrêa Maia

    2010-07-01

    Full Text Available A atual realidade escolar no Brasil demonstra que o ensino de Climatologia não tem sido desenvolvido no Ensino Fundamental II, ou, quando ocorre, é ministrado baseado na Climatologia tradicional e separativa, cujos fatores e elementos do clima são analisados individualmente, retratando-se a natureza de forma estática e totalmente destituída do real. Através da observação dos elementos do clima, pretende-se demonstrar que o aprendizado dos “conteúdos climatológicos” pode ser auxiliado através dos ditos populares. O que se almeja neste artigo é demonstrar que, a partir da observação espontânea (diária do tempo e do clima, com o auxílio dos ditos populares, os alunos do Ensino Fundamental II podem compreender as relações do tempo e do clima, assim como sua previsão. É necessário para esta atividade um período contínuo de observação para estabelecer a sequência habitual dos tipos de tempo de uma determinada estação do ano. O modo popular de prever o tempo foi iniciado desde que o homem se fixou em cavernas; no entanto, este hábito vem se perdendo em função da urbanização da sociedade. Para reforçar a importância dos provérbios populares para prever o tempo, realizar-se-á um pequeno histórico do nascimento da meteorologia popular, até a sua relevância destacada nos Parâmetros Curriculares Nacionais de Geografia. Abstract THE USE OF SAYINGS AND THE WEATHER FOR THE TEACHING SCHOOL CLIMATOLOGY OF FUNDAMENTAL SCHOOL II The school reality in Brazil shows that Climatology teach has not been developed in the Fundamental School II, or, when it occurs, is done based in traditional and classic Climatology, which factors and weather elements are analyzed individually, retracting nature in a static way and totally disconnected from the reality. Through the weather elements observation, it is intended to demonstrate of learnig the “climatologic contents” which can be verified through the popular proverbs. This

  1. Changing the Curriculum to Problem-Based and Project-Based Learning

    DEFF Research Database (Denmark)

    Kolmos, Anette

    2012-01-01

    Problem based and project based learning (PBL) models are implemented all over the world in various versions at curriculum or course level. Due to this development, the conceptual understanding of PBL has become more diverse and sometimes confusing. This chapter summarizes the conceptual work done...... by the UNESCO Chair in PBL in engineering education in order to define PBL as a set of core learning principles that can be applied in practice. The PBL learning principles are formulated within three aspects: learning, social, and content of study. Furthermore, the chapter contains a PBL curriculum model......, which can be used for analysis and development of the curriculum or single courses. Seven elements are identified as important for the planning and implementation of PBL learning principles, and for each of the elements there are several choices to be made. Finally, the chapter presents concrete advice...

  2. Stable TEMPO and ABNO Catalyst Solutions for User-Friendly (bpy)Cu/Nitroxyl-Catalyzed Aerobic Alcohol Oxidation.

    Science.gov (United States)

    Steves, Janelle E; Stahl, Shannon S

    2015-11-06

    Two solutions, one consisting of bpy/TEMPO/NMI and the other bpy/ABNO/NMI (bpy =2,2'-bipyridyl; TEMPO = 2,2,6,6-tetramethylpiperidine N-oxyl, ABNO = 9-azabicyclo[3.3.1]nonane N-oxyl; NMI = N-methylimidazole), in acetonitrile are shown to have good long-term stability (≥1 year) under air at 5 °C. The solutions may be combined in appropriate quantities with commercially available [Cu(MeCN)4]OTf to provide a convenient catalyst system for the aerobic oxidation of primary and secondary alcohols.

  3. Dependência angular do tempo de armazenamento de luz em um vapor de césio

    OpenAIRE

    ALMEIDA, Allan Johnes Ferreira de

    2014-01-01

    As mem orias oticas coerentes via EIT (transpar^encia eletromagneticamente induzida) fazem uso direto da troca entre coer^encia otica e coer^encia at^omica entre estados com longos tempos de vida e t^em sido largamente estudadas em diferentes sistemas at^omicos. Neste regime e poss vel armazenar um pulso de luz na coer^encia at^omica induzida pelos campos ("escrita"), e recuper a-lo posteriormente com a incid^encia de um campo de "leitura". O tempo de armazenamento est a di...

  4. KERNEL-BASED UNSUPERVISED CHANGE DETECTION OF AGRICULTURAL LANDS USING MULTI-TEMPORAL POLARIMETRIC SAR DATA

    Directory of Open Access Journals (Sweden)

    M. A. Fazel

    2013-09-01

    Full Text Available Unsupervised change detection of agricultural lands in seasonal and annual periods is necessary for farming activities and yield estimation. Polarimetric Synthetic Aperture Radar (PolSAR data due to their special characteristics are a powerful source to study temporal behaviour of land cover types. PolSAR data allows building up the powerful observations sensitive to the shape, orientation and dielectric properties of scatterers and allows the development of physical models for identification and separation of scattering mechanisms occurring inside the same region of observed lands. In this paper an unsupervised kernel-based method is introduced for agricultural change detection by PolSAR data. This method works by transforming data into higher dimensional space by kernel functions and clustering them in this space. Kernel based c-means clustering algorithm is employed to separate the changes classes from the no-changes. This method is a non-linear algorithm which considers the contextual information of observations. Using the kernel functions helps to make the non-linear features more separable in a linear space. In addition, use of eigenvectors' parameters as a polarimetric target decomposition technique helps us to consider and benefit physical properties of targets in the PolSAR change detection. Using kernel based c-means clustering with proper initialization of the algorithm makes this approach lead to great results in change detection paradigm.

  5. Land Cover Changes Detection in Polarimetric SAR Data Using Algebra, Similarity and Distance Based Methods

    Science.gov (United States)

    Najafi, A.; Hasanlou, M.; Akbari, V.

    2017-09-01

    Monitoring and surveillance changes around the world need powerful methods, so detection, visualization, and assessment of significant changes are essential for planning and management. Incorporating polarimetric SAR images due to interactions between electromagnetic waves and target and because of the high spatial resolution almost one meter can be used to study changes in the Earth's surface. Full polarized radar images comparing to single polarized radar images use amplitude and phase information of the surface in different available polarization (HH, HV, VH, and VV). This study is based on the decomposition of full polarized airborne UAVSAR images and integration of these features with algebra method involves Image Differencing (ID) and Image Ratio (IR) algorithms with the mathematical nature and distance-based method involves Canberra (CA) and Euclidean (ED) algorithms with measuring distance between corresponding vector and similarity-based method involves Taminoto (TA) and Kulczynski (KU) algorithms with dependence corresponding vector for change detecting purposes on two real PolSAR datasets. Assessment of incorporated methods is implemented using ground truth data and different criteria for evaluating such as overall accuracy (OA), area under ROC curve (AUC) and false alarms rate (FAR). The output results show that ID, IR, and CA have superiority to detect changes comparing to other implemented algorithms. Also, numerical results show that the highest performance in two datasets has OA more than 90%. In other assessment criteria, mention algorithms have low FAR and high AUC value indices to detect changes in PolSAR images.

  6. Towards real-time change detection in videos based on existing 3D models

    Science.gov (United States)

    Ruf, Boitumelo; Schuchert, Tobias

    2016-10-01

    Image based change detection is of great importance for security applications, such as surveillance and reconnaissance, in order to find new, modified or removed objects. Such change detection can generally be performed by co-registration and comparison of two or more images. However, existing 3d objects, such as buildings, may lead to parallax artifacts in case of inaccurate or missing 3d information, which may distort the results in the image comparison process, especially when the images are acquired from aerial platforms like small unmanned aerial vehicles (UAVs). Furthermore, considering only intensity information may lead to failures in detection of changes in the 3d structure of objects. To overcome this problem, we present an approach that uses Structure-from-Motion (SfM) to compute depth information, with which a 3d change detection can be performed against an existing 3d model. Our approach is capable of the change detection in real-time. We use the input frames with the corresponding camera poses to compute dense depth maps by an image-based depth estimation algorithm. Additionally we synthesize a second set of depth maps, by rendering the existing 3d model from the same camera poses as those of the image-based depth map. The actual change detection is performed by comparing the two sets of depth maps with each other. Our method is evaluated on synthetic test data with corresponding ground truth as well as on real image test data.

  7. LAND COVER CHANGES DETECTION IN POLARIMETRIC SAR DATA USING ALGEBRA, SIMILARITY AND DISTANCE BASED METHODS

    Directory of Open Access Journals (Sweden)

    A. Najafi

    2017-09-01

    Full Text Available Monitoring and surveillance changes around the world need powerful methods, so detection, visualization, and assessment of significant changes are essential for planning and management. Incorporating polarimetric SAR images due to interactions between electromagnetic waves and target and because of the high spatial resolution almost one meter can be used to study changes in the Earth's surface. Full polarized radar images comparing to single polarized radar images use amplitude and phase information of the surface in different available polarization (HH, HV, VH, and VV. This study is based on the decomposition of full polarized airborne UAVSAR images and integration of these features with algebra method involves Image Differencing (ID and Image Ratio (IR algorithms with the mathematical nature and distance-based method involves Canberra (CA and Euclidean (ED algorithms with measuring distance between corresponding vector and similarity-based method involves Taminoto (TA and Kulczynski (KU algorithms with dependence corresponding vector for change detecting purposes on two real PolSAR datasets. Assessment of incorporated methods is implemented using ground truth data and different criteria for evaluating such as overall accuracy (OA, area under ROC curve (AUC and false alarms rate (FAR. The output results show that ID, IR, and CA have superiority to detect changes comparing to other implemented algorithms. Also, numerical results show that the highest performance in two datasets has OA more than 90%. In other assessment criteria, mention algorithms have low FAR and high AUC value indices to detect changes in PolSAR images.

  8. Electronic media-based health interventions promoting behavior change in youth: a systematic review.

    Science.gov (United States)

    Hieftje, Kimberly; Edelman, E Jennifer; Camenga, Deepa R; Fiellin, Lynn E

    2013-06-01

    Little research has been done on the efficacy of electronic media-based interventions, especially on their effect on health or safety behavior. The current review systematically identified and evaluated electronic media-based interventions that focused on promoting health and safety behavior change in youth. To assess the type and quality of the studies evaluating the effects of electronic media-based interventions on health and safety behavior change. Studies were identified from searches in MEDLINE (1950 through September 2010) and PsycINFO (1967 through September 2010). The review included published studies of interventions that used electronic media and focused on changes in behavior related to health or safety in children aged 18 years or younger. Nineteen studies met the criteria and focused on at least 1 behavior change outcome. The focus was interventions related to physical activity and/or nutrition in 7 studies, on asthma in 6, safety behaviors in 3, sexual risk behaviors in 2, and diabetes mellitus in 1. Seventeen studies reported at least 1 statistically significant effect on behavior change outcomes, including an increase in fruit, juice, or vegetable consumption; an increase in physical activity; improved asthma self-management; acquisition of street and fire safety skills; and sexual abstinence. Only 5 of the 19 studies were rated as excellent. Our systematic review suggests that interventions using electronic media can improve health and safety behaviors in young persons, but there is a need for higher-quality, rigorous interventions that promote behavior change.

  9. Impact of organizational change on organizational culture: implications for introducing evidence-based practice.

    Science.gov (United States)

    Austin, Michael J; Claassen, Jennette

    2008-01-01

    Evidence-based practice (EBP) seeks to integrate the expertise of individual practitioners with the best available evidence within the context of the values and expectations of clients. Prior to implementing EBP, it is important to understand the significance that organizational change and organizational culture play. This article seeks to explore the literature associated with both organizational change and organizational culture. The analysis of organizational culture and change draw upon findings from both the private, for-profit sector, and the public, non-profit field. It is divided into four sections: organizational change and innovation, organizational culture, managing organizational culture and change, and finally, applying the findings to the implementation of EBP. While the audience for this analysis is managers in public and nonprofit human service organizations who are considering implementing EBP into their work environment, it is not intended to provide a "how to" guide, but rather a framework for critical thinking.

  10. Point pattern match-based change detection in a constellation of previously detected objects

    Energy Technology Data Exchange (ETDEWEB)

    Paglieroni, David W.

    2016-06-07

    A method and system is provided that applies attribute- and topology-based change detection to objects that were detected on previous scans of a medium. The attributes capture properties or characteristics of the previously detected objects, such as location, time of detection, detection strength, size, elongation, orientation, etc. The locations define a three-dimensional network topology forming a constellation of previously detected objects. The change detection system stores attributes of the previously detected objects in a constellation database. The change detection system detects changes by comparing the attributes and topological consistency of newly detected objects encountered during a new scan of the medium to previously detected objects in the constellation database. The change detection system may receive the attributes of the newly detected objects as the objects are detected by an object detection system in real time.

  11. Professional Learning Communities (PLCs) as a Means for School-Based Science Curriculum Change

    Science.gov (United States)

    Browne, Christi L.

    The challenge of school-based science curriculum change and educational reform is often presented to science teachers and departments who are not necessarily prepared for the complexity of considerations that change movements require. The development of a Professional Learning Community (PLC) focused on a science department's curriculum change efforts, may provide the necessary tools to foster sustainable school-based curriculum science changes. This research presents a case study of an evolving science department PLC consisting of 10 middle school science teachers from the same middle school and their efforts of school-based science curriculum change. A transformative mixed model case study with qualitative data and deepened by quantitative analysis, was chosen to guide the investigation. Collected data worked to document the essential developmental steps, the occurrence and frequency of the five essential dimensions of successful PLCs, and the influences the science department PLC had on the middle school science department's progression through school-based science curriculum change, and the barriers, struggles and inhibiting actions of the science department PLC. Findings indicated that a science department PLC was unique in that it allowed for a focal science departmental lens of science curriculum change to be applied to the structure and function of the PLC and therefore the process, proceedings, and results were directly aligned to and driven by the science department. The science PLC, while logically difficult to set-up and maintain, became a professional science forum where the middle school science teachers were exposed to new science teaching and learning knowledge, explored new science standards, discussed effects on student science learning, designed and critically analyzed science curriculum change application. Conclusions resulted in the science department PLC as an identified tool providing the ability for science departmental actions to lead to

  12. Attribute and topology based change detection in a constellation of previously detected objects

    Science.gov (United States)

    Paglieroni, David W.; Beer, Reginald N.

    2016-01-19

    A system that applies attribute and topology based change detection to networks of objects that were detected on previous scans of a structure, roadway, or area of interest. The attributes capture properties or characteristics of the previously detected objects, such as location, time of detection, size, elongation, orientation, etc. The topology of the network of previously detected objects is maintained in a constellation database that stores attributes of previously detected objects and implicitly captures the geometrical structure of the network. A change detection system detects change by comparing the attributes and topology of new objects detected on the latest scan to the constellation database of previously detected objects.

  13. Innovation in project-based companies - A case study in different approaches to organisational change

    DEFF Research Database (Denmark)

    Grex, Sara

    2004-01-01

    This paper asks how project-based organizations can be developed in order to establish and sustain innovation. The question is being explored by examining and comparing two approaches to organizational change. One approach emphasizes planning, regulation and control and creation of changes through...... new structures and procedures whereas the other approach emphasizes the organizational history, knowledge and experience of the members of the organization and the creation of changes through dialogue, role-shift and interactive theatre playing. The present paper does not suggest choosing between...

  14. A model for prediction of color change after tooth bleaching based on CIELAB color space

    Science.gov (United States)

    Herrera, Luis J.; Santana, Janiley; Yebra, Ana; Rivas, María. José; Pulgar, Rosa; Pérez, María. M.

    2017-08-01

    An experimental study aiming to develop a model based on CIELAB color space for prediction of color change after a tooth bleaching procedure is presented. Multivariate linear regression models were obtained to predict the L*, a*, b* and W* post-bleaching values using the pre-bleaching L*, a*and b*values. Moreover, univariate linear regression models were obtained to predict the variation in chroma (C*), hue angle (h°) and W*. The results demonstrated that is possible to estimate color change when using a carbamide peroxide tooth-bleaching system. The models obtained can be applied in clinic to predict the colour change after bleaching.

  15. Using Time-Driven Activity-Based Costing to Implement Change.

    Science.gov (United States)

    Sayed, Ellen N; Laws, Sa'ad; Uthman, Basim

    2017-01-01

    Academic medical libraries have responded to changes in technology, evolving professional roles, reduced budgets, and declining traditional services. Libraries that have taken a proactive role to change have seen their librarians emerge as collaborators and partners with faculty and researchers, while para-professional staff is increasingly overseeing traditional services. This article addresses shifting staff and schedules at a single-service-point information desk by using time-driven activity-based costing to determine the utilization of resources available to provide traditional library services. Opening hours and schedules were changed, allowing librarians to focus on patrons' information needs in their own environment.

  16. Land-use change arising from rural land exchange: an agent-based simulation model

    OpenAIRE

    Martha M. Bakker; Alam, Shah Jamal; van Dijk, Jerry; Rounsevell, Mark D A

    2015-01-01

    Land exchange can be a major factor driving land-use change in regions with high pressure on land, but is generally not incorporated in land-use change models. Here we present an agent-based model to simulate land-use change arising from land exchange between multiple agent types representing farmers, nature organizations, and estate owners. The RULEX model (Rural Land EXchange) was calibrated and applied to a 300 km(2) case study area in the east of the Netherlands. Decision rules about whic...

  17. Rice Production Vulnerability to Climate Change in Indonesia: An Overview on Community-based Adaptation

    Science.gov (United States)

    Komaladara, A. A. S. P.; Budiasa, I. W.; Ambarawati, I. G. A. A.

    2015-12-01

    Rice remains to be a major crop and staple food in Indonesia. The task to ensure that rice production meets the demand of a growing population continues to engage the attention of national planners and policy makers. However, the adverse effects of climate change on agriculture production have presented Indonesia with yet another significant challenge. The exposure of rice crops to climate-related hazards such as temperature stress, floods, and drought, may lead to lower yield and self-sufficiency rate. This study explores the vulnerability of rice production to the effects of climate change in Indonesia. Considering the vast geographical span of the country and varying exposure, sensitivity, and adaptive capacity to climate change at regional level, this study emphasize the importance of community-based adaptation. Results from a simulation based on production and climate data from 1984 to 2014 indicates that rice production is sensitive to variation in growing season temperature and precipitation. A projection of these climate factors in 2050 has a significant impact on the major rice crop. To manage the impact of climate change, this study turns to the potential roles of farmer organizations, such as Subak, in adaptation strategies. The Subak in Bali is recognized for its cultural and organizational framework that highlights the sharing of knowledge and local wisdom in rice production. This is demonstrated by its efficient community-based irrigation management system, leading to sustainable rice production. Keywords: rice production, climate change, community-based adaptation, Indonesia

  18. Understanding coastal change using shoreline trend analysis supported by cluster-based segmentation

    Science.gov (United States)

    Burningham, Helene; French, Jon

    2017-04-01

    Shoreline change analysis is a well defined and widely adopted approach for the examination of trends in coastal position over different timescales. Conventional shoreline change metrics are best suited to resolving progressive quasi-linear trends. However, coastal change is often highly non-linear and may exhibit complex behaviour including trend-reversals. This paper advocates a secondary level of investigation based on a cluster analysis to resolve a more complete range of coastal behaviours. Cluster-based segmentation of shoreline behaviour is demonstrated with reference to a regional-scale case study of the Suffolk coast, eastern UK. An exceptionally comprehensive suite of shoreline datasets covering the period 1881 to 2015 is used to examine both centennial- and intra-decadal scale change in shoreline position. Analysis of shoreline position changes at a 100 m alongshore interval along 74 km of coastline reveals a number of distinct behaviours. The suite of behaviours varies with the timescale of analysis. There is little evidence of regionally coherent shoreline change. Rather, the analyses reveal a complex interaction between met-ocean forcing, inherited geological and geomorphological controls, and evolving anthropogenic intervention that drives changing foci of erosion and deposition.

  19. Improve Climate Change Literacy At Minority Institutions Through Problem-based Teaching And Learning

    Science.gov (United States)

    yang, Z.; Williams, H.

    2013-12-01

    Climate change is one of most popular topics in the U.S. Currently we are implementing our funded NASA climate change education grant entitled as 'Preparing Science Educators with Climate Change Literacy through Problem-based Teaching and Learning'. This project aims to prepare underrepresented STEM (Science, Technology, Engineering and Mathematics) teachers that are competent for teaching the contents of the Earth, climate, and climate change. In this project, we first developed lectures, assignments, and lab exercises which are related to climate change and then applied those materials in courses which are usually selected by pre-service teachers after modification based on students' evaluation. Also field visits to sites such as landfill and hog farm were provided to North Carolina Central University (NCCU) students in order to help them have better understanding on sources and amount of greenhouse gases emitted from human activities. In addition, summer interns are specifically trained to enhance and improve their knowledge and skills in climate change science. Those strategies have effectively improved climate change literacy of pre-service teachers at NCCU in spite of some challenges.

  20. Methodology for Innovation-Based Control of Business Changes Taking into Consideration the Communication Aspects

    Directory of Open Access Journals (Sweden)

    Gumba Khuta

    2017-01-01

    Full Text Available At the current stage of the economy development the efficient control of the enterprise activity based on the anticipatory adaptation to continuous changes of the environment in tune with the trend of the internal medium dynamic self-organization is the most important prerequisite of the success, so the issues of scientifically substantiated control of changes become especially urgent. The authors have substantiated the essence and comprehensive nature of the process of business changes, and its predominantly innovative character has been determined. The algorithm of controlling business changes at the enterprise based on graph theory methodology has been suggested based on identification of the communication basis of business processes. Using the algorithm enables making scientifically substantiated decisions facilitating achievement of the enterprise functioning goals at some period of time. Based on the algorithm, the authors have developed methodology for optimization of innovation-based organizational enterprise management structure implemented in business practice of RZhDstroi JSC Holding. The results of the suggested methodological tooling validation have shown the appropriateness of the tools in the enterprise business activity.