Relevant bibliographies by topics / The frequency of movements

Academic literature on the topic 'The frequency of movements'

Author: Grafiati
Published: 30 May 2022
Last updated: 31 May 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Contents

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'The frequency of movements.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "The frequency of movements"

1

Levy-Tzedek, S., M. Ben Tov, and A. Karniel. "Rhythmic movements are larger and faster but with the same frequency on removal of visual feedback." Journal of Neurophysiology 106, no. 5 (November 2011): 2120–26. http://dx.doi.org/10.1152/jn.00266.2011.

Full text
Abstract:
The brain controls rhythmic movement through neural circuits combining visual information with proprioceptive information from the limbs. Although rhythmic movements are fundamental to everyday activities the specific details of the responsible control mechanisms remain elusive. We tested 39 young adults who performed flexion/extension movements of the forearm. We provided them with explicit knowledge of the amplitude and the speed of their movements, whereas frequency information was only implicitly available. In a series of 3 experiments, we demonstrate a tighter control of frequency compared with amplitude or speed. We found that in the absence of visual feedback, movements had larger amplitude and higher peak speed while maintaining the same frequency as when visual feedback was available; this was the case even when participants were aware of performing overly large and fast movements. Finally, when participants were asked to modulate continuously movement frequency, but not amplitude, we found the local coefficient of variability of movement frequency to be lower than that of amplitude. We suggest that a misperception of the generated amplitude in the absence of visual feedback, coupled with a highly accurate perception of generated frequency, leads to the performance of larger and faster movements with the same frequency when visual feedback is not available. Relatively low local coefficient of variability of frequency in a task that calls for continuous change in movement frequency suggests that we tend to operate at a constant frequency at the expense of variation in amplitude and peak speed.
APA, Harvard, Vancouver, ISO, and other styles
2

Sanjoaquin, Miguel A., Paul N. Appleby, Elizabeth A. Spencer, and Timothy J. Key. "Nutrition and lifestyle in relation to bowel movement frequency: a cross-sectional study of 20 630 men and women in EPIC–Oxford." Public Health Nutrition 7, no. 1 (February 2004): 77–83. http://dx.doi.org/10.1079/phn2003522.

Full text
Abstract:
AbstractObjective:To investigate the relationships between nutritional and lifestyle factors and bowel movement frequency.Design:Cross-sectional analysis using data from a prospective study. Mean numbers of bowel movements were calculated in relation to a range of factors. In addition, individuals were categorised according to frequency of bowel movements: fewer than 7 per week (‘less than daily’) versus 7 or more per week (‘daily’), and odds ratios were calculated from logistic regression models. Results for each factor were adjusted for the other factors under consideration.Setting:The European Prospective Investigation into Cancer and Nutrition, Oxford cohort (EPIC–Oxford), UK.Participants:In total, 20,630 men and women aged 22–97 years at recruitment. Thirty per cent of the subjects were vegetarians or vegans.Results:Women had fewer bowel movements on average than men, and were less likely to have daily bowel movements. Mean bowel movement frequency was higher in vegetarians (10.5 in men, 9.1 in women) and especially in vegans (11.6 in men, 10.5 in women) compared with participants who ate meat (9.5 in men, 8.2 in women). There were also significant positive associations between bowel movement frequency and body mass index (BMI), intakes of dietary fibre and non-alcoholic fluids, for both men and women. Vigorous exercise was positively associated with bowel movement frequency in women although results for men were less clear. Alcohol intake was positively associated with bowel movement frequency in men but not in women.Conclusion:Being vegetarian and especially vegan is strongly associated with a higher frequency of bowel movements. Moreover, having a high intake of dietary fibre and fluids and a high BMI are associated with an increase in frequency of bowel movements.
APA, Harvard, Vancouver, ISO, and other styles
3

Heazell, Alexander E. P., Jayne Budd, Minglan Li, Robin Cronin, Billie Bradford, Lesley M. E. McCowan, Edwin A. Mitchell, et al. "Alterations in maternally perceived fetal movement and their association with late stillbirth: findings from the Midland and North of England stillbirth case–control study." BMJ Open 8, no. 7 (July 2018): e020031. http://dx.doi.org/10.1136/bmjopen-2017-020031.

Full text
Abstract:
ObjectiveTo report perception of fetal movements in women who experienced a stillbirth compared with controls at a similar gestation with a live birth.DesignCase–control study.Setting41 maternity units in the UK.ParticipantsCases were women who had a late stillbirth ≥28 weeks gestation (n=291) and controls were women with an ongoing pregnancy at the time of the interview (n=733). Controls were frequency matched to cases by obstetric unit and gestational age.MethodsData were collected using an interviewer-administered questionnaire which included questions on maternal perception of fetal movement (frequency, strength, increased and decreased movements and hiccups) in the 2 weeks before the interview/stillbirth. Five fetal movement patterns were identified incorporating the changes in strength and frequency in the last 2 weeks by combining groups of similar pattern and risk. Multivariable analysis adjusted for known confounders.Primary outcome measureAssociation of maternally perceived fetal movements in relation to late stillbirth.ResultsIn multivariable analyses, women who reported increased strength of movements in the last 2 weeks had decreased risk of late stillbirth compared with those whose movements were unchanged (adjusted OR (aOR) 0.18, 95% CI 0.13 to 0.26). Women with decreased frequency (without increase in strength) of fetal movements were at increased risk (aOR 4.51, 95% CI 2.38 to 8.55). Daily perception of fetal hiccups was protective (aOR 0.31, 95% CI 0.17 to 0.56).ConclusionsIncreased strength of fetal movements and fetal hiccups is associated with decreased risk of stillbirth. Alterations in frequency of fetal movements are important in identifying pregnancies at increased risk of stillbirth, with the greatest risk in women noting a reduction in fetal activity. Clinical guidance should be updated to reflect that increase in strength and frequency of fetal movements is associated with the lowest risk of stillbirth, and that decreased fetal movements are associated with stillbirth.Trial registrationnumberNCT02025530.
APA, Harvard, Vancouver, ISO, and other styles
4

Taylor, Jordan A., and Kurt A. Thoroughman. "Divided Attention Impairs Human Motor Adaptation But Not Feedback Control." Journal of Neurophysiology 98, no. 1 (July 2007): 317–26. http://dx.doi.org/10.1152/jn.01070.2006.

Full text
Abstract:
When humans experience externally induced errors in a movement, the motor system's feedback control compensates for those errors within the movement. The motor system's predictive control then uses information about those errors to inform future movements. The role of attention in these two distinct motor processes is unclear. Previous experiments have revealed a role for attention in motor learning over the course of many movements; however, these experimental paradigms do not determine how attention influences within-movement feedback control versus across-movement adaptation. Here we develop a dual-task paradigm, consisting of movement and audio tasks, which can differentiate and expose attention's role in these two processes of motor control. Over the course of several days, subjects performed horizontal reaching movements, with and without the audio task; movements were occasionally subjected to transient force perturbations. On movements with a force perturbation, subjects compensated for the force-induced movement errors, and on movements immediately after the force perturbation subjects exhibited adaptation. On every movement trial, subjects performed a two-tone frequency-discrimination task. The temporal specificity of the frequency-discrimination task allowed us to divide attention within and across movements. We find that divided attention did not impair the within-movement feedback control of the arm, but did reduce subsequent movement adaptation. We suggest that the secondary task interfered with the encoding and transformation of errors into changes in predictive control.
APA, Harvard, Vancouver, ISO, and other styles
5

Hinze, Vasko Kilian, Ozge Uslu, Jessica Emily Antono, Melanie Wilke, and Arezoo Pooresmaeili. "The effect of subliminal incentives on goal-directed eye movements." Journal of Neurophysiology 126, no. 6 (December 1, 2021): 2014–26. http://dx.doi.org/10.1152/jn.00414.2021.

Full text
Abstract:
Reward incentives motivate humans to exert more effort, and they do so even when rewards are subconsciously perceived. It has been unknown whether these effects also extend to eye movements that have lower energetic demands compared with other movement types. We devised a behavioral task that required fast execution of multiple eye movements. Subliminal rewards enhanced the frequency and peak velocity of saccadic eye movements, with the most reliable effect observed for saccadic frequency.
APA, Harvard, Vancouver, ISO, and other styles
6

Suzuki, Takako, Makoto Suzuki, Kilchoon Cho, Naoki Iso, Takuhiro Okabe, Toyohiro Hamaguchi, Junichi Yamamoto, and Naohiko Kanemura. "EEG Oscillations in Specific Frequency Bands Are Differently Coupled with Angular Joint Angle Kinematics during Rhythmic Passive Elbow Movement." Brain Sciences 12, no. 5 (May 14, 2022): 647. http://dx.doi.org/10.3390/brainsci12050647.

Full text
Abstract:
Rhythmic passive movements are often used during rehabilitation to improve physical functions. Previous studies have explored oscillatory activities in the sensorimotor cortex during active movements; however, the relationship between movement rhythms and oscillatory activities during passive movements has not been substantially tested. Therefore, we aimed to quantitatively identify changes in cortical oscillations during rhythmic passive movements. Twenty healthy young adults participated in our study. We placed electroencephalography electrodes over a nine-position grid; the center was oriented on the transcranial magnetic stimulation hotspot of the biceps brachii muscle. Passive movements included elbow flexion and extension; the participants were instructed to perform rhythmic elbow flexion and extension in response to the blinking of 0.67 Hz light-emitting diode lamps. The coherence between high-beta and low-gamma oscillations near the hotspot of the biceps brachii muscle and passive movement rhythms was higher than that between alpha oscillation and passive movement rhythm. These results imply that alpha, beta, and gamma oscillations of the primary motor cortex are differently related to passive movement rhythm.
APA, Harvard, Vancouver, ISO, and other styles
7

Gerloff, Christian, Camilo Toro, Letizia Leocani, and Mark Hallett. "Movement-related cortical potentials during repetitive high-frequency finger movements: preliminary results." Electroencephalography and Clinical Neurophysiology 102, no. 1 (January 1997): P14. http://dx.doi.org/10.1016/s0013-4694(97)86270-0.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Stanford, T. R., E. G. Freedman, and D. L. Sparks. "Site and parameters of microstimulation: evidence for independent effects on the properties of saccades evoked from the primate superior colliculus." Journal of Neurophysiology 76, no. 5 (November 1, 1996): 3360–81. http://dx.doi.org/10.1152/jn.1996.76.5.3360.

Full text
Abstract:
1. Microstimulation is used to investigate how activity in the superior colliculus (SC) contributes to determining the properties of primate saccadic eye movements. The site of collicular stimulation, the duration of the stimulation train, and the frequency of the stimulation train are each varied to examine the relative contributions of the locus, duration, and level of collicular activity to determining saccade amplitude, direction, duration, and velocity. 2. For any given site of stimulation, a relationship between movement amplitude and train duration can be demonstrated. Movement amplitude is a monotonically increasing, but saturating, function of increasing train duration. The size of the largest movement is dictated by the site of stimulation. Within the range over which amplitude can be modulated, movement offset is linked to the offset of the stimulation train. As a result, each decrement or increment in train duration produces a corresponding decrement or increment in movement duration. 3. The peak velocity of an evoked movement is influenced by the frequency of stimulation; a higher frequency of stimulation produces a movement of higher velocity. 4. The effects of train duration and frequency can be traded to produce movements that have comparable amplitudes but different dynamic characteristics; high-velocity movements of short duration and low-velocity movements of long duration can be produced by stimulating with high-frequency, short-duration, and low-frequency, long-duration trains, respectively. Across stimulation frequencies, the amplitude of an evoked movement is best related to the total number of pulses in the stimulation train. 5. Because it is possible to compensate for reduced velocity by increasing the duration of the stimulation train, the same site-specific maximum amplitude can be attained with different frequencies of stimulation. 6. Small, but significant, changes in movement direction occur as a result of varying train duration or train frequency. 7. The latency to movement onset (i.e., interval from stimulation onset to movement onset) depends upon the frequency of stimulation. A higher frequency of stimulation produces a movement of shorter latency. 8. These data demonstrate that both the site of stimulation and the parameters of stimulation contribute to determining the properties of a movement evoked from the primate SC. In doing so, they contradict the results of early microstimulation studies that suggest that the properties of eye movements evoked from the primate SC are determined solely by the site of stimulation. The findings conflict with the traditional view of collicular function that suggests that the collicular motor representation is purely anatomic. Rather, these data support a revised view whereby the locus, duration, and level of collicular activity contribute to determining the properties of a primate saccadic eye movement. According to this view, independent information relating to desired displacement and saccade velocity are extracted from the spatiotemporal profile of collicular activity.
APA, Harvard, Vancouver, ISO, and other styles
9

Robles-Puente, Sergio. "Fundamental frequency movements in one-word imperatives." Journal of the Acoustical Society of America 137, no. 4 (April 2015): 2267. http://dx.doi.org/10.1121/1.4920272.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Brogaard, Jonathan, Allen Carrion, Thibaut Moyaert, Ryan Riordan, Andriy Shkilko, and Konstantin Sokolov. "High frequency trading and extreme price movements." Journal of Financial Economics 128, no. 2 (May 2018): 253–65. http://dx.doi.org/10.1016/j.jfineco.2018.02.002.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "The frequency of movements"

1

Pope, Edward Leonard. "Frequency and triggering mechanisms of submarine mass movements and their geohazard implications." Thesis, Durham University, 2017. http://etheses.dur.ac.uk/12373/.

Full text
Abstract:
Submarine mass movements are one of the most important processes for moving sediment across our planet. They represent the dominant process for moving sediment in many parts of the world’s oceans, freshwater lakes and reservoirs. These flows also represent a significant geohazard. They can generate damaging tsunami and have the potential to damage strategically important seafloor infrastructure. It is therefore important to understand the frequency and triggering mechanisms of these events. This thesis aims to further our understanding using a variety of different data types (artificial data, deposits found in cores, seismic stratigraphy and submarine cable breaks) across different spatial scales. First, artificial data is used to analyse the impacts of large age uncertainties on identifying a triggering mechanism for large (>1 km3) landslides in a global database. It is shown that the size of age uncertainties, the small number of landslides within the database and the combination of multiple different settings into one dataset will likely result in landslides appearing to occur randomly. As a result it is suggested that it is prudent to focus on well-dated landslides from one setting with similar triggers rather than having a poorly calibrated understanding of landslide ages in multiple settings which may prevent a trigger being identified. Second, a global database of subsea fibre optic cable breaks is used to investigate the triggering of submarine mass movements by earthquakes and tropical cyclones. Globally earthquakes between Mw 3 and Mw 9.2 are shown to trigger mass movements. However, in contrast to previous assertions it is shown that there is not a specific earthquake magnitude that will systematically trigger mass movements capable of breaking a cable. The susceptibility of slopes to fail as a consequence of large and small earthquakes is dependent on the average seismicity of the region and the volume of sediment supplied annually to the continental shelf. The frequency of damaging tropical cyclone triggered submarine mass movements is lower than earthquake triggered mass movements. Analysis of the cable break database reveals three mechanisms by which mass movements are triggered. First, tropical cyclones trigger flows directly, synchronous to their passage due to dynamic loading of the seabed. Second, flows are triggered indirectly, as a consequence of peak flood discharges delivering large volumes of sediment to the continental shelf. Third, flows are triggered indirectly following a delay as a consequence of the large volumes of rapidly deposited sediment that occurs after the passage of a tropical cyclone. No clear global relationship between future climate change and flow frequency is shown, however, changes to cyclone activity in specific regions appears likely to increase damaging flow frequency. Third, using a new piston core dataset, the timing and frequency of glacigenic debris-flows on the Bear Island Trough-Mouth Fan is investigated. The timing of glacigenic debris-flows over the last 140,000 years is shown to be controlled by the presence of an ice stream close to the shelf edge. Moreover, it is shown that the frequency and volumes of these flows is controlled by the overall dynamics of the Barents Sea Ice Sheet which vary significantly over the 140,000 year time period. Last, a review of the relationship between ice sheets and submarine mass movements around the Nordic Seas over the Quaternary is presented using published seismic and sediment core datasets. From these data sources, the growth and decay histories of the Greenland, Barents Sea and Scandinavian Ice Sheets are tracked relative to the different types of submarine mass movements identified on their margins. The type and frequency of submarine mass movement is shown to be highly variable as a consequence of variable ice sheet extent, rates of sediment transport and meltwater export of sediment. These records have allowed the identification of first order controls on sediment delivery to continental margins at ice sheet scales. It has also enabled updated conceptual models of trough-mouth fan processes, glaciated margin development and submarine landslide occurrence to be developed.
APA, Harvard, Vancouver, ISO, and other styles
2

Gladwin, Thomas Edward. "Time-frequency domain EEG activity during the preparation of task sets and movements." [S.l. : [Groningen : s.n.] ; University Library Groningen] [Host], 2006. http://irs.ub.rug.nl/ppn/293105073.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Waadeland, Carl Haakon. "Rhythmic movements and moveable rhythms : syntheses of expressive timing by means of rhythmic frequency modulation." Doctoral thesis, Norwegian University of Science and Technology, Department of Music, 2000. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-1770.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Dambacher, Michael. "Bottom-up and top-down processes in reading : influences of frequency and predictability on event-related potentials and eye movements." Universität Potsdam, 2010. http://opus.kobv.de/ubp/volltexte/2010/4202/.

Full text
Abstract:
In reading, word frequency is commonly regarded as the major bottom-up determinant for the speed of lexical access. Moreover, language processing depends on top-down information, such as the predictability of a word from a previous context. Yet, however, the exact role of top-down predictions in visual word recognition is poorly understood: They may rapidly affect lexical processes, or alternatively, influence only late post-lexical stages. To add evidence about the nature of top-down processes and their relation to bottom-up information in the timeline of word recognition, we examined influences of frequency and predictability on event-related potentials (ERPs) in several sentence reading studies. The results were related to eye movements from natural reading as well as to models of word recognition. As a first and major finding, interactions of frequency and predictability on ERP amplitudes consistently revealed top-down influences on lexical levels of word processing (Chapters 2 and 4). Second, frequency and predictability mediated relations between N400 amplitudes and fixation durations, pointing to their sensitivity to a common stage of word recognition; further, larger N400 amplitudes entailed longer fixation durations on the next word, a result providing evidence for ongoing processing beyond a fixation (Chapter 3). Third, influences of presentation rate on ERP frequency and predictability effects demonstrated that the time available for word processing critically co-determines the course of bottom-up and top-down influences (Chapter 4). Fourth, at a near-normal reading speed, an early predictability effect suggested the rapid comparison of top-down hypotheses with the actual visual input (Chapter 5). The present results are compatible with interactive models of word recognition assuming that early lexical processes depend on the concerted impact of bottom-up and top-down information. We offered a framework that reconciles the findings on a timeline of word recognition taking into account influences of frequency, predictability, and presentation rate (Chapter 4).
Wortfrequenz wird in der Leseforschung als wesentliche Bottom-up Determinante für die Geschwindigkeit des lexikalischen Zugriffs betrachtet. Darüber hinaus spielen Top-down Informationen, wie die kontextbasierte Wortvorhersagbarkeit, in der Sprachverarbeitung eine wichtige Rolle. Bislang ist die exakte Bedeutung von Top-down Vorhersagen in der visuellen Worterkennung jedoch unzureichend verstanden: Es herrscht Uneinigkeit darüber, ob ausschließlich späte post-lexikalische, oder auch frühe lexikalische Verarbeitungsstufen durch Vorhersagbarkeit beeinflusst werden. Um ein besseres Verständnis von Top-down Prozessen und deren Zusammenhänge mit Bottom-up Informationen in der Worterkennung zu gewährleisten, wurden in der vorliegenden Arbeit Einflüsse von Frequenz und Vorhersagbarkeit auf ereigniskorrelierte Potentiale (EKPs) untersucht. Die Ergebnisse aus mehreren Satzlesestudien wurden mit Blickbewegungen beim natürlichen Lesen sowie mit Modellen der Worterkennung in Beziehung gesetzt. Als primärer Befund zeigten sich in EKP Amplituden konsistent Interaktionen zwischen Frequenz und Vorhersagbarkeit. Die Ergebnisse deuten auf Top-down Einflüsse während lexikalischer Wortverarbeitungsstufen hin (Kapitel 2 und 4). Zweitens mediierten Frequenz und Vorhersagbarkeit Zusammenhänge zwischen N400 Amplituden und Fixationsdauern; die Modulation beider abhängigen Maße lässt auf eine gemeinsame Wortverarbeitungsstufe schließen. Desweiteren signalisierten längere Fixationsdauern nach erhöhten N400 Amplituden das Andauern der Wortverarbeitung über die Dauer einer Fixation hinaus (Kapitel 3). Drittens zeigten sich Einflüsse der Präsentationsrate auf Frequenz- und Vorhersagbarkeitseffekte in EKPs. Der Verlauf von Bottom-up und Top-down Prozessen wird demnach entscheidend durch die zur Wortverarbeitung verfügbaren Zeit mitbestimmt (Kapitel 4). Viertens deutete ein früher Vorhersagbarkeitseffekt bei einer leseähnlichen Präsentationsgeschwindigkeit auf den schnellen Abgleich von Top-down Vorhersagen mit dem tatsächlichen visuellen Input hin (Kapitel 5). Die Ergebnisse sind mit interaktiven Modellen der Worterkennung vereinbar, nach welchen Bottom-up und Top-down Informationen gemeinsam frühe lexikalische Verarbeitungsstufen beeinflussen. Unter Berücksichtigung der Effekte von Frequenz, Vorhersagbarkeit und Präsentationsgeschwindigkeit wird ein Modell vorgeschlagen, das die vorliegenden Befunde zusammenführt (Kapitel 4).
APA, Harvard, Vancouver, ISO, and other styles
5

Huttunen, P. (Paavo). "Spontaneous movements of hands in gradients of weak VHF electromagnetic fields." Doctoral thesis, Oulun yliopisto, 2012. http://urn.fi/urn:isbn:9789514297601.

Full text
Abstract:
Abstract The aims of the present study were to clarify the antenna function and radio frequency radiation (RFR) sensitivity of human subjects using theoretical calculations and field tests. The weak very high frequency (VHF) electromagnetic fields and spontaneous hand movements were recorded. Groups of university students, other volunteers and as a very interesting group, experienced well finders, were used as test subjects. The VHF field was studied using a spectrum analyser and tuneable narrow-band or broad-band meter with a dipole antenna. The hand movements were registered by potentiometric systems and electromyography (EMG). The test subjects (altogether n = 140) in different tests were walking, sitting in a cart being pulled slowly forward, or sitting in a moving car. The responses were observed and hand movements were recorded and analysed by personal computers. By visual inspection and using the Pearson's correlation, the results of different individuals have been compared with the measured intensity of far fields of a radio mast. Reaction spots and graphs defined by different individuals in the same experiment areas have been compared to each other. Hand movement correlated with the reactions of the forearm and shoulder muscles, e.g., pronator teres and trapezius, by EMG measurements. The reactions of some persons correlated with each other. Experiments in a slow moving wagon and in a moving car showed a correlation between the test subjects’ hand movements and the intensity of below 1 mV/m radio and TV signals measured in the vicinity of the test subject. In open field tests different persons usually reacted in widely different ways. The most evident results were recorded near the buildings, where the radio waves reflected from the wall and patterns of standing waves were clear. Many VHF frequency modulated (FM) broadcasting signals were summed at these places at the same time. It is concluded that the spontaneous hand movement reactions occurred as a response of the human body to the gradients of the VHF field intensity. The reaction generally occurred in interference patterns of multipath propagation or standing waves originating from the radiation of FM radio and TV broadcasting transmitters and radiation reflected from the walls of buildings or from other objects. This non-thermal reaction was clearly observable as spontaneous arm movements by 39 percent of the 85 tested students
Tiivistelmä Tässä tutkimuksessa selvitettiin ihmisen herkkyyttä radiotaajuiselle säteilylle. Ihmisen toimimista radioaaltojen antennina tarkasteltiin teoreettisesti ja kenttäkokein. Heikkojen VHF-alueen radioaaltojen voimakkuutta ja tahattomia käsien liikkeitä rekisteröitiin valituilla koepoluilla. Koehenkilöinä on ollut yliopiston opiskelijoita ja muita vapaaehtoisten ryhmiä. Kiinnostavin ryhmä oli kokeneet kaivonkatsojat, joiden käsienliikereaktioihin radioaaltojen vaikutuksista löytyy viitteitä kirjallisuudesta. Radioaaltojen voimakkuuden vaihteluja mitattiin spektrianalysaattorilla ja laajakaistaisella VHF-alueen integroivalla mittarilla. Käsien liikkeitä rekisteröitiin potentiometriin perustuvilla liikeantureilla. Lihasten sähköimpulsseja rekisteröitiin elektromyografia- eli EMG-laitteella. Eri koesarjoissa koehenkilöt (yhteensä 140) kävelivät, istuivat hitaasti vedettävässä vaunussa tai istuivat liikkuvassa autossa. Reaktioita tarkkailtiin ja käsien liikkeet ja mitatut kentänvoimakkuudet rekisteröitiin ja analysoitiin tietokoneella. Eri koehenkilöiden tuloksia, reagointipaikkoja ja rekisteröityjä käyriä 5–35 km:n etäisyydellä mastoista tarkasteltiin silmämääräisesti. Pearsonin korrelaatiolaskentaa apuna käyttäen tuloksia verrattiin radiomastojen säteilyn voimakkuuteen. Eri ihmisten reagointikohtia ja käyriä samoilta koealueilta vertailtiin keskenään. Koeasetelmassa käsienliikkeiden todettiin korreloivan joidenkin kyynärvarren ja hartialihasten (mm. pronator teres ja trapezius) EMG-signaaleihin. Joidenkin koehenkilöiden tulokset korreloivat keskenään. Hitaasti vedettävässä vaunussa ja liikkuvassa autossa tehdyissä kokeissa tuli esille korrelaatio vartalon edessä olevien käsien loittonemis-lähestymis-liikkeiden ja koehenkilön välittömässä läheisyydessä mitattujen 1 mV/m -tasoisten radio- ja TV-signaalien voimakkuusvaihtelujen välillä. Avoimella kentällä henkilöt reagoivat hyvin eri tavoin. Parhaiten yhteys tuli esille rakennusten lähellä sijaitsevilla koealueilla, joissa radioaallot heijastuivat rakennuksen seinästä muodostaen selkeitä seisovan aallon kuvioita. Useat taajuusmoduloidut VHF-alueen radiosignaalit summautuivat näissä paikoissa samanaikaisesti. Johtopäätöksenä on, että tahattomat käsienliikkeet tapahtuvat kehon vasteena VHF-kentän voimakkuuden muutoksille. Reaktio tapahtui yleensä interferenssi-kuvioissa tai seisovissa aalloissa, jotka muodostuvat FM-radio- ja TV-lähetysten monitie-etenemisestä radioaaltojen heijastuessa rakennusten seinistä tai muista kohteista. Tämä ei-lämpövaikutustason reaktio oli selvästi havaittavissa olkapään tasalle koukistetun käden tahattomana ojennus-koukistus-liikkeenä 39 prosentilla testatuista 85 opiskelijasta
APA, Harvard, Vancouver, ISO, and other styles
6

Shahid, Aisha. "Using word frequency and parafoveal preview to determine the locus of contextual predictability and imageability effects : evidence from eye movements during reading and lexical decision." Thesis, University of Glasgow, 2014. http://theses.gla.ac.uk/5242/.

Full text
Abstract:
The present thesis examines the time course of two semantic variables, contextual predictability and word imageability. Both variables can be said to reflect semantic aspects of meaning. For example the contextual predictability of a given target indicates the semantic context within which the target word occurs. The imageability of a given word reflects the meaning aspects of the word itself (Whaley, 1978). The word frequency effect (the faster response to commonly used high frequency words compared to low frequency words which occur less often) was taken to index the moment of lexical access (Balota, 1990; Pollatsek & Rayner, 1990; Sereno & Rayner, 2003) and by applying the logic of additive factors method (Sternberg, 1969a, 1969b), we determined whether the combined effect of each respective semantic variable was additive or interactive. This allowed us to examine whether there are semantic influences on lexical access. Previous research has been undecided and the question remains as to whether semantic variables operate during the lexical access processing stage, or alternatively after lexical access, for example in the post-lexical stage (e.g., Hand, Miellet, Sereno & O’Donnell, 2010; Sereno, O’Donnell & Rayner, 2006). Another aim of the thesis was to address the issue concerning the information presented to participants in the condition of ‘invalid parafoveal preview of a target’ (e.g., Sereno & Rayner, 2000). Several criteria were identified as being important in order to make the assumption that parafoveal processing was successfully inhibited on the pre-target fixation. Another aim of the thesis was to investigate whether word frequency and contextual predictability of the parafoveal word affected parafoveal preview benefit. Preview benefit was calculated by subtracting fixation durations in a condition of ‘valid’ preview of the target with an ‘invalid’ preview of the target. Experiment 1 utilised a lexical decision task to investigate the relationship between word frequency and the imageability of the word. Experiment 2 investigated whether the orthogonal manipulation of word frequency and contextual predictability led to an additive or interactive relationship between these two variables. Two pre-tests, the rating and Cloze tasks, were used to determine the predictability of the target. Experiment 3 and a further cross comparison of Experiments 2 and 3 replicated and extended Experiment 2 by additionally using an eye movement-contingent boundary change paradigm (Rayner, 1975). Experiment 4 examined the joint and combined effects of frequency, predictability and preview in a within-subjects design. A separate pre-test Cloze task was used to determine predictability of targets in their low and high predictable contexts. This experiment used a larger set of materials than in the previous experiments to examine these variables. Finally Chapter 6 was an overall discussion of the thesis. It was concluded that display screen presentations in our eye tracking experiments led to very fast reading times (as well as more skipping) compared to past studies which have used dot-matrix display presentations. It is possible that faster fixation durations led to floor effects in conditions where reading times are already fast because of preferential circumstances of high frequency targets, high predictable contexts and being given a parafoveal preview of the target. Possible ways to counteract this floor effect as well as alternative experimental methods of investigation were discussed.
APA, Harvard, Vancouver, ISO, and other styles
7

Ong, James Kwan Yau, and Reinhold Kliegl. "Conditional co-occurrence probability acts like frequency in predicting fixation durations." Universität Potsdam, 2008. http://opus.kobv.de/ubp/volltexte/2011/5677/.

Full text
Abstract:
The predictability of an upcoming word has been found to be a useful predictor in eye movement research, but is expensive to collect and subjective in nature. It would be desirable to have other predictors that are easier to collect and objective in nature if these predictors were capable of capturing the information stored in predictability. This paper contributes to this discussion by testing a possible predictor: conditional co-occurrence probability. This measure is a simple statistical representation of the relatedness of the current word to its context, based only on word co-occurrence patterns in data taken from the Internet. In the regression analyses, conditional co-occurrence probability acts like lexical frequency in predicting fixation durations, and its addition does not greatly improve the model fits. We conclude that readers do not seem to use the information contained within conditional co-occurrence probability during reading for meaning, and that similar simple measures of semantic relatedness are unlikely to be able to replace predictability as a predictor for fixation durations. Keywords: Co-occurrence probability, Cloze predictability, frequency, eye movement, fixation duration.
APA, Harvard, Vancouver, ISO, and other styles
8

Sams, David A. "Is the Utricular Striola Specialized to Encode High Frequency Stimuli?" Ohio University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1306440793.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Gau, Jen-Tzer, Utkarsh H. Acharya, M. Salman Khan, and Tzu-Cheg Kao. "Risk factors associated with lower defecation frequency in hospitalized older adults: a case control study." BioMed Central Ltd, 2015. http://hdl.handle.net/10150/610289.

Full text
Abstract:
BACKGROUND: Constipation is highly prevalent in older adults and may be associated with greater frequency of acute exacerbation of chronic obstructive pulmonary disease (AECOPD). We investigated the prevalence of lower defecation frequency (DF) and risk factors (including AECOPD) associated with lower DF among hospitalized elderly patients. METHODS: We conducted a retrospective case-control study in a community hospital of Southeast Ohio. Adults aged 65 years or older admitted during 2004 and 2006 were reviewed (N = 1288). Patients were excluded (N = 212) if their length of stay was less than 3 days, discharge diagnosis of Clostridium difficile-associated diarrhea, death or ventilator- dependent respiratory failure during hospitalization. Lower DF was defined as either an average DF of 0.33 or less per day or no defecation in the first three days of hospitalization; cases (N = 406) and controls (N = 670) were included for the final analysis. RESULTS: Approximately 38% had lower DF in this patient population. Fecal soiling/smearing of at least two episodes was documented in 7% of the patients. With the adjustment of confounders, AECOPD (adjusted odds ratio [AOR] =1.47, 95% confidence interval [CI] =1.01-2.13) and muscle relaxant use (AOR =2.94; 95% CI =1.29-6.69) were significantly associated with lower DF. Supplementation of potassium and antibiotic use prior to hospitalization was associated with lower risk of lower DF. CONCLUSIONS: Approximately 38% of hospitalized older adults had lower DF. AECOPD and use of muscle relaxant were significantly associated with lower DF; while supplementation of potassium and antibiotic use were protective for lower DF risk after adjusting for other variables.
APA, Harvard, Vancouver, ISO, and other styles
10

Shuaieb, Wafa S. A. "Radio-Location Techniques for Localization and Monitoring Applications. A study of localisation techniques, using OFDM system under adverse channel conditions and radio frequency identification for object identification and movement tracking." Thesis, University of Bradford, 2018. http://hdl.handle.net/10454/18185.

Full text
Abstract:
A wide range of services and applications become possible when accurate position information for a radio terminal is available. These include: location-based services; navigation; safety and security applications. The commercial, industrial and military value of radio-location is such that considerable research effort has been directed towards developing related technologies, using satellite, cellular or local area network infrastructures or stand-alone equipment. This work studies and investigates two location techniques. The first one presents an implementation scheme for a wideband transmission and direction finding system using OFDM multi-carrier communications systems. This approach takes advantage of delay discrimination to improve angle-of-arrival estimation in a multipath channel with high levels of additive white Gaussian noise. A new methodology is interpreted over the multi carrier modulation scheme in which the simulation results of the estimated channel improves the performance of OFDM signal by mitigating the effect of frequency offset synchronization to give error-free data at the receiver, good angle of arrival accuracy and improved SNR performance. The full system simulation to explore optimum values such as channel estimation and AoA including the antenna array model and prove the operational performance of the OFDM system as implemented in MATLAB. The second technique proposes a low cost-effective method of tracking and monitoring objects (examples: patient, device, medicine, document) by employing passive radio frequency identification (RFID) systems. A multi-tag, (totalling fifty-six tags) with known ID values are attached to the whole patient’s body to achieve better tracking and monitoring precision and higher accuracy. Several tests with different positions and movements are implemented on six patients. The aim is to be able to track the patient if he/she is walking or sitting; therefore, the tests considered six possible movements for the patient including walking, standing, sitting, resting, laying on the floor and laying on the bed, these placements are important to monitor the status of the patient like if he collapsed and fall on the ground so that the help will be quick. The collected data from the RFID Reader in terms of Time Stamp, RSS, Tag ID, and a number of channels are processed using the MATLAB code.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "The frequency of movements"

1

Green, Christopher J. High frequency determinants of intermittent interest rate movements: An empirical study of base rate. Cardiff: Cardiff Business School, Financial and Banking Economics Research Group, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

McConkie, George W. Estimating frequency and size of effects due to experimental manipulations in eye movement research. Champaign, Ill: University of Illinois at Urbana-Champaign, 1985.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Balke, Nathan S. Low frequency movements in stock prices: A state space decomposition (revised May 2001, forthcoming Review of Economics and Statistics). [Dallas, Tx.]: Federal Reserve Bank of Dallas, 2000.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Griscom, Chris. Ecstasy is a new frequency: Teachings of the Light Institute. Santa Fe, N.M: Bear, 1987.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Ecstasy is a new frequency: Teachings of the Light Institute. New York: Simon & Schuster, 1988.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Griscom, Chris. Ecstasy is a new frequency: Teachings of the Light Institute. Santa Fe, N.M: Bear, 1987.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Sherstnev, Nikolay. Maintenance and repair of marine diesel engines. In 4 volumes. ru: INFRA-M Academic Publishing LLC., 2021. http://dx.doi.org/10.12737/1851519.

Full text
Abstract:
The second volume of the textbook shows the design features of the main components and parts of the movement groups that affect their working conditions and methods of maintenance and repair. Recommendations on the frequency of regulated work and possible malfunctions are given. With examples from ship practice, the methods of disassembly-assembly, defection and repair of the main components and parts of the movement groups are considered. The previous and subsequent volumes show the design features, provide recommendations on the frequency of regulated work and maintenance and repair of other components and parts of marine diesel engines. It is intended for students of higher educational institutions in the specialty "Operation of marine power plants" and university teachers. It may be useful for ship mechanics.
APA, Harvard, Vancouver, ISO, and other styles
8

Xiu, Liming, ed. From Frequency to Time-Average-Frequency. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119102175.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Robin, Lindley, ed. Official aeronautical frequency directory: High frequency, very high frequency & much more. Londonderry, NH: Official Frequency Directory, 1990.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Ellis, Warren. Global frequency. New York, NY: Vertigo, 2013.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "The frequency of movements"

1

Liesenfeld, Roman, Ingmar Nolte, and Winfried Pohlmeier. "Modelling financial transaction price movements: a dynamic integer count data model." In High Frequency Financial Econometrics, 167–97. Heidelberg: Physica-Verlag HD, 2008. http://dx.doi.org/10.1007/978-3-7908-1992-2_8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Chiarella, Carl, Willi Semmler, Chih-Ying Hsiao, and Lebogang Mateane. "Forecasting and Low Frequency Movements of Asset Returns." In Dynamic Modeling and Econometrics in Economics and Finance, 9–17. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-49229-1_2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Chiarella, Carl, Willi Semmler, Chih-Ying Hsiao, and Lebogang Mateane. "Asset Accumulation with Estimated Low Frequency Movements of Asset Returns." In Dynamic Modeling and Econometrics in Economics and Finance, 81–96. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-49229-1_5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Behrmann, Jan H., David Völker, Jacob Geersen, Rieka Harders, and Wilhelm Weinrebe. "Size-Frequency Relationship of Submarine Landslides at Convergent Plate Margins: Implications for Hazard and Risk Assessment." In Submarine Mass Movements and Their Consequences, 165–75. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-00972-8_15.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Hasiotis, T., G. Papatheodorou, M. Charalampakis, A. Stefatos, and G. Ferentinos. "High Frequency Sediment Failures In A Submarine Volcanic Environment: The Santorini (Thera) Basin In The Aegean Sea." In Submarine Mass Movements and Their Consequences, 309–16. Dordrecht: Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-1-4020-6512-5_32.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Bozdog, Dragos, Ionuţ Florescu, Khaldoun Khashanah, and Jim Wang. "A Study of Persistence of Price Movement Using High Frequency Financial Data." In Handbook of Modeling High-Frequency Data in Finance, 27–46. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118204580.ch2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Benabid, Alim L., Zhongge Ni, Stephan Chabardes, Abdelhamid Benazzouz, and Pierre Pollak. "How are We Inhibiting Functional Targets with High Frequency Stimulation?" In Basal Ganglia and Thalamus in Health and Movement Disorders, 309–15. Boston, MA: Springer US, 2001. http://dx.doi.org/10.1007/978-1-4615-1235-6_27.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Nakayama, Minoru, and Yasutaka Shimizu. "Frequency Analysis of Task Evoked Pupillary Response and Eye Movement." In Behaviormetrics: Quantitative Approaches to Human Behavior, 89–103. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-1722-5_7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Jeschke, Michaela, Aaron C. Zöller, and Knut Drewing. "Influence of Prior Visual Information on Exploratory Movement Direction in Texture Perception." In Haptics: Science, Technology, Applications, 30–38. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-06249-0_4.

Full text
Abstract:
AbstractWhen humans explore objects haptically, they seem to use prior as well as sensory information to adapt their exploratory behavior [1]. For texture discrimination, it was shown that participants adapted the direction of their exploratory movement to be orthogonal to the orientation of textures with a defined direction [2]. That is, they adapted the exploratory direction based on the sensory information gathered over the course of an exploration, and this behavior improved their perceptual precision. In the present study we examined if prior visual information that indicates a texture orientation produces a similar adjustment of exploratory movement direction. We expected an increase of orthogonal initial exploration movements with higher qualities of prior information. In each trial, participants explored two grating textures with equal amplitude, only differing in their spatial period. They had to report the stimulus with the higher spatial frequency. Grating stimuli were given in six different orientations relative to the observer. Prior visual information on grating orientation was given in five different qualities: 50% (excellent information), 35%, 25%, 15% and 0% (no information). We analyzed movement directions of the first, middle and last strokes over the textures of each trial. The results show an increase in the amount of initial orthogonal strokes and a decrease in variability of movement directions with higher qualities of prior visual information.
APA, Harvard, Vancouver, ISO, and other styles
10

Mayr, Winfried, Christian Hofer, Karen Minassian, Ursula Hofstötter, Helmut Kern, Manfred Bijak, Ewald Unger, Frank Rattay, and Milan Dimitrijevic. "Modulation of stimulation frequency of spinal cord afferents with unchanged intensity and electrode site can induce a variety of movements." In IFMBE Proceedings, 543–45. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-03889-1_146.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "The frequency of movements"

1

Abushakra, Ahmad, Miad Faezipour, and Anas Abumunshar. "Efficient frequency-based classification of respiratory movements." In 2012 IEEE International Conference on Electro/Information Technology (EIT 2012). IEEE, 2012. http://dx.doi.org/10.1109/eit.2012.6220731.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Sofian, D. M. "Frequency response analysis in diagnosing transformer winding movements." In 3rd IEE International Conference on Reliability of Transmission and Distribution Networks (RTDN 2005). IEE, 2005. http://dx.doi.org/10.1049/cp:20050062.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Lim, Ye-Sheen, and Denise Gorse. "Deep Probabilistic Modelling of Price Movements for High-Frequency Trading." In 2020 International Joint Conference on Neural Networks (IJCNN). IEEE, 2020. http://dx.doi.org/10.1109/ijcnn48605.2020.9206995.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Ubeda, Andres, Enrique Hortal, Javier Alarcon, Rocio Salazar-Varas, Antonio Sanchez, and Jose M. Azorin. "Online detection of horizontal hand movements from low frequency EEG components." In 2015 7th International IEEE/EMBS Conference on Neural Engineering (NER). IEEE, 2015. http://dx.doi.org/10.1109/ner.2015.7146598.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Layeghy, Siamak, Ghasem Azemi, Paul Colditz, and Boualem Boashash. "Non-invasivemonitoring of fetal movements using time-frequency features of accelerometry." In ICASSP 2014 - 2014 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE, 2014. http://dx.doi.org/10.1109/icassp.2014.6854429.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

O’Neil, Gregg, and Alan Samchek. "Satellite-Based Monitoring of Slope Movements on TransCanada’s Pipeline System." In 2002 4th International Pipeline Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/ipc2002-27356.

Full text
Abstract:
TransCanada owns and operates over 38,000 km of pipeline throughout North America, which cross over 3,300 slopes and 1,200 watercourses. Ground movements on slopes at river crossings are an important pipeline hazard across Canada and especially within the Alberta system. These movements have led to several past pipeline ruptures and the development of a relatively extensive slope monitoring program. Historically, ground movement impacts are an industry-wide problem. The results of a 1998 study by the Gas Research Institute reported that external force damage from natural forces, including ground movement, was responsible for approximately 12 percent of all incidents reported on U.S. onshore pipelines between 1985 and 1994. Of all natural force incidents, ground movement accounted for approximately 29 percent of the total, on average. Furthermore, of all fires or explosions resulting from pipeline incidents, ground movements were reported responsible for about 5 percent of the total. In a similar study of Alberta pipeline failures and incidents between 1980 and 1997 (EUB, 1998), ground movement was the cause of 56 ruptures, or 3.5 percent of the total. Until recently, monitoring of the progress of slope movements was reactive and undertaken in a traditional fashion, using primarily slope inclinometers and/or ground surveys. Recently, however, TransCanada has adopted a proactive approach for the management of ground movements. Consistent with the management of other pipeline hazards, such as corrosion, ground movements are cast in a risk-based framework. The application of DInSAR technology, Differential Interferometry applied to satellite synthetic aperture radar (SAR) imagery, fits well within the proactive approach and has proven successful in measuring ground movements on ROW slopes to sub-centimetre accuracy. In 2000, a Pipeline Research Committee International (PRCI) study was carried out on a TransCanada Right of Way (RoW) that compared conventional slope indicator readings with DInSAR technology and proved the capability of the technology. TransCanada has begun to use DInSAR technology in this program of monitoring Alberta slopes. Typically, TransCanada monitors slope movements at 53 sites with frequency of readings between bi-annually and 4 times per year using conventional methods. Since 2001, 14 slopes on the TransCanada system have been instrumented using DInSAR methods and monitoring of movements using interferometric methods is continuing.
APA, Harvard, Vancouver, ISO, and other styles
7

Abbas-Turki, A., O. Grunder, A. El Moudni, and E. Zaremba. "Sequence Optimization for Timetabling High Frequency Passenger Trains." In 2012 Joint Rail Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/jrc2012-74137.

Full text
Abstract:
Recently, Harrod has revealed that the occupancy constraints are not sufficient to timetable rail traffic. This insufficiency occurs when opposite movements of trains share the same route. In this paper, we propose a quick algorithm that considers overtaking and opposite train’s movements. This algorithm builds a train timetable from a proposed sequence of trains. It is based on an elementary model of an invariant resource sharing system. The algorithm is proposed in order to extend the genetic algorithm that calculates the sequence of trains for maximizing the frequency of passenger’s train.
APA, Harvard, Vancouver, ISO, and other styles
8

Karg, Sonja A. "Stability of Stepping Movements in the Frontal Plain: A Biomechanical Model." In ASME 2007 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2007. http://dx.doi.org/10.1115/sbc2007-176310.

Full text
Abstract:
Walking is a complex task influenced by many factors. It is still not well understood how single parts as mechanics, sensor feedback and according control components are integrated to the very robust and adaptive task ‘walking’. So one possible way to address this task is to look at single components, as passive mechanics, and analyze their abilities for walking [1,2]. Or rhythmic movement mechanisms in vertebrates are analyzed, like central pattern generator mechanisms, to produce muscle activation patterns [3]. The combination of mechanics and rhythmic actuation leads to more robust walkers [4]. In the following a new biomechanical model for stepping movements in the frontal plain is introduced. This model bases on passive dynamics actuated by a neural oscillator network. It concentrates on low level generation of basic movement patterns which allow different stepping tasks as stepping in place, stepping up and down or stepping to the side. For the case stepping in place, it is shown that there exist periodic movements which are stable in the sense of a limit cycle, though the movement is varied in frequency and amplitude.
APA, Harvard, Vancouver, ISO, and other styles
9

Ricci, Serena, Elisa Tatti, Ramtin Mehraram, Priya Panday, and M. Felice Ghilardi. "Beta band frequency differences between motor and frontal cortices in reaching movements." In 2019 IEEE 16th International Conference on Rehabilitation Robotics (ICORR). IEEE, 2019. http://dx.doi.org/10.1109/icorr.2019.8779373.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Sapsanis, Christos, George Georgoulas, and Anthony Tzes. "EMG based classification of basic hand movements based on time-frequency features." In 2013 21st Mediterranean Conference on Control & Automation (MED). IEEE, 2013. http://dx.doi.org/10.1109/med.2013.6608802.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "The frequency of movements"

1

Gamboa-Estrada, Fredy, and Jose Vicente Romero. Common and idiosyncratic movements in Latin-American Exchange Rates. Banco de la República, April 2021. http://dx.doi.org/10.32468/be.1158.

Full text
Abstract:
We propose a simple theoretical and empirical approach to differentiate between common and idiosyncratic exchange rate movements in 5 Latin-American economies: Brazil, Chile, Colombia, Mexico, and Peru. Our approach allows us to distinguish the effects on exchange rates of a regional exchange rate common factor and macroeconomic fundamentals differentials. The methodology and estimation strategy are suitable for both low and high frequency settings. We provide evidence that the regional common factor has a significant effect on the dynamics of the Latin-American exchange rates. In our estimations the relation between exchange rates and the common factor is contemporaneous and stable during the studied period.
APA, Harvard, Vancouver, ISO, and other styles
2

Heymsfield, Ernie, and Jeb Tingle. State of the practice in pavement structural design/analysis codes relevant to airfield pavement design. Engineer Research and Development Center (U.S.), May 2021. http://dx.doi.org/10.21079/11681/40542.

Full text
Abstract:
An airfield pavement structure is designed to support aircraft live loads for a specified pavement design life. Computer codes are available to assist the engineer in designing an airfield pavement structure. Pavement structural design is generally a function of five criteria: the pavement structural configuration, materials, the applied loading, ambient conditions, and how pavement failure is defined. The two typical types of pavement structures, rigid and flexible, provide load support in fundamentally different ways and develop different stress distributions at the pavement – base interface. Airfield pavement structural design is unique due to the large concentrated dynamic loads that a pavement structure endures to support aircraft movements. Aircraft live loads that accompany aircraft movements are characterized in terms of the load magnitude, load area (tire-pavement contact surface), aircraft speed, movement frequency, landing gear configuration, and wheel coverage. The typical methods used for pavement structural design can be categorized into three approaches: empirical methods, analytical (closed-form) solutions, and numerical (finite element analysis) approaches. This article examines computational approaches used for airfield pavement structural design to summarize the state-of-the-practice and to identify opportunities for future advancements. United States and non-U.S. airfield pavement structural codes are reviewed in this article considering their computational methodology and intrinsic qualities.
APA, Harvard, Vancouver, ISO, and other styles
3

Baird, Robin W., Stephen W. Martin, Daniel L. Webster, and Brandon L. Southall. Assessment of Modeled Received Sound Pressure Levels and Movements of Satellite-Tagged Odontocetes Exposed to Mid-Frequency Active Sonar at the Pacific Missile Range Facility: February 2011 Through February 2013. Fort Belvoir, VA: Defense Technical Information Center, May 2014. http://dx.doi.org/10.21236/ada602847.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Lane, Philip, and Gian Milesi-Ferretti. Long-Term Capital Movements. Cambridge, MA: National Bureau of Economic Research, July 2001. http://dx.doi.org/10.3386/w8366.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Walton, George N. Estimating interroom contaminant movements. Gaithersburg, MD: National Bureau of Standards, 1985. http://dx.doi.org/10.6028/nbs.ir.85-3229.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Anisimova and Katenkov. MANAGEMENT OF MOVEMENTS IN SPRINT. Federal State Budgetary Educational Establishment of Higher Vocational Education "Povolzhskaya State Academy of Physical Culture, Sports and Tourism" Naberezhnye Chelny, December 2013. http://dx.doi.org/10.14526/33_2013_5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Bebbington, Anthony, Martin Scurrah, and Claudia Bielich. Mapping current Peruvian social movements. Unknown, 2008. http://dx.doi.org/10.35648/20.500.12413/11781/ii203.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Baker, Laura, Robert Goldstein, and John A. Stern. Saccadic Eye Movements in Deception. Fort Belvoir, VA: Defense Technical Information Center, December 1992. http://dx.doi.org/10.21236/ada304658.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Yost, William A. Auditory Processing During Head Movements. Fort Belvoir, VA: Defense Technical Information Center, August 2000. http://dx.doi.org/10.21236/ada386908.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Bernard, Andrew, and Steven Durlauf. Convergence of International Output Movements. Cambridge, MA: National Bureau of Economic Research, May 1991. http://dx.doi.org/10.3386/w3717.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'The frequency of movements' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography