Academic literature on the topic 'Numeric rhythm'
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Journal articles on the topic "Numeric rhythm"
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Н., І. Самсоненко. "ЧИСЛОВИЙ РИТМ ТА МОТИВ РОЗДІЛЕНОСТІ В РОСІЙСЬКОМОВНОМУ ПОЕТИЧНОМУ ТЕКСТІ (на прикладі поетичних творів Генадія Айгі, Юрія Ряшенцева та Юлії Олефір)". Лінгвістичні дослідження, № 48 (7 травня 2018): 211–15. https://doi.org/10.5281/zenodo.1242915.
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The article considers the numeric rhythm as one of the subtypes of the morphological rhythm – a phenomenon that represents a wavy periodic alternation of certain morphological forms in the structure of a poem or its fragment. The actuality of the research is determined by insufficient study of the phenomenon of the numeric rhythm and its connection with the composition-thematic structure of the poetic work in modern linguistics. The purpose of the article is to analyse the texts with the numeric rhythm. The main tasks of the article are the identification of features and regularities of the numeric rhythm, as well as its connection with the composition-thematic structure of the poetic work. In the article it is proved (as a case study of the poetical works by Hennadii Ayhi, Yurii Riashentsev and Yulia Olefir) that the numeric rhythm as an alternation of singular and plural grammemes contributes to the actualization of the idea of separation, barrier, contrast or opposition, which often results in the motive of separation in a poetical work. It is asserted that in some cases the numeric rhythm is intensified by the gender rhythm, which is an alternation of grammemes of the masculine and feminine gender, in order to actualise the motive of a couple’s splitting up. At the same time, the absence of neuter gender grammemes is significant.
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Campagna, Sara, Riccardo Sperlinga, Antonella Milo, et al. "The Circadian Rhythm of Breakthrough Pain Episodes in Terminally-ill Cancer Patients." Cancers 11, no. 1 (2018): 18. http://dx.doi.org/10.3390/cancers11010018.
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Opioid therapy must be adjusted to the rhythm of a cancer patient’s pain to ensure adequate symptom control at the end of life (EOL). However, to-date no study has explored the rhythm of breakthrough pain (BTP) episodes in terminally-ill cancer patients. This prospective longitudinal study was aimed at verifying the existence of a circadian rhythm of BTP episodes in terminally-ill cancer patients. Consecutive adult cancer patients at their EOL treated with long-acting major opioids to control background pain (Numeric Rating Scale ≤ 3/10) were recruited from two Italian palliative care services. Using a personal diary, patients recorded the frequency and onset of BTP episodes and the analgesic rescue therapy taken for each episode over a 7-day period. Rhythms identified in BTP episodes were validated by Cosinor analysis. Overall, 101 patients were enrolled; nine died during the study period. A total of 665 BTP episodes were recorded (average of 7.2 episodes, mean square error 0.8) per patient, with 80.6% of episodes recorded between 8:00 a.m. and 12:00 a.m. At Cosinor analysis, a circadian rhythm of BTP episodes was observed, with a Midline Estimating Statistics of the Rhythm (MESOR) of 1.5, a double amplitude of 1.8, and an acrophase at 12:30 p.m. (p < 0.001). Oral morphine was the most frequent analgesic rescue therapy employed. In terminally-ill cancer patients, BTP episodes follow a circadian rhythm; thus, tailoring the timing of opioid administration to this rhythm may prevent such episodes. This circadian rhythm of BTP episodes in terminally-ill cancer patients should be confirmed in larger samples.
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Douw, André. "Tōru Takemitsu's A Bird came down the Walk for viola accompanied by piano: An Analysis." Music Theory and Analysis (MTA) 9, no. 2 (2022): 183–222. http://dx.doi.org/10.11116/mta.9.2.3.
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In one of his last compositions, A Bird came down the Walk (1995), Tōru Takemitsu uses numbers to organize all parameters of the work and to create an association between the chords ju and gyo, as produced on the traditional Japanese wind instrument shō, and Messiaen's seven modes à transpositions limitées. With the help of the numbers three, seven, and nine, form and meter build a palindromic architecture around the middle measure of the piece (m. 30), where the piano plays in Messiaen's fourth mode. In Japanese, the words for "four" and "death" are associated because both are pronounced shi, and thus A Bird may contain a reference to the deaths in 1992 of Olivier Messiaen and John Cage.<br/> The rigidity of the numeric structure is softened by the application of Messiaen's valeur ajoutée on all levels. Added values are essential in Takemitsu's technique for designing chords, melodies, and rhythms, breaking up the rigorous symmetry of the serial technique. The omnipresent Japanese philosophical concept ma refers to the unity of space and time (harmony and rhythm) that obtains meaning when filled with motion (tempo). The tempo indications in A Bird appear to create unity among all the parameters in a truly Western, mid-twentieth-century, and serialistic understanding of the term.
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Mishra, Akash, Vikram Bajaj, Toni Fitzpatrick, Jeremy Watts, Anahita Khojandi, and Ritesh A. Ramdhani. "Differential Responses to Low- and High-Frequency Subthalamic Nucleus Deep Brain Stimulation on Sensor-Measured Components of Bradykinesia in Parkinson’s Disease." Sensors 24, no. 13 (2024): 4296. http://dx.doi.org/10.3390/s24134296.
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Introduction: The current approach to assessing bradykinesia in Parkinson’s Disease relies on the Unified Parkinson’s Disease Rating Scale (UPDRS), which is a numeric scale. Inertial sensors offer the ability to probe subcomponents of bradykinesia: motor speed, amplitude, and rhythm. Thus, we sought to investigate the differential effects of high-frequency compared to low-frequency subthalamic nucleus (STN) deep brain stimulation (DBS) on these quantified facets of bradykinesia. Methods: We recruited advanced Parkinson’s Disease subjects with a chronic bilateral subthalamic nucleus (STN) DBS implantation to a single-blind stimulation trial where each combination of medication state (OFF/ON), electrode contacts, and stimulation frequency (60 Hz/180 Hz) was assessed. The Kinesia One sensor system was used to measure upper limb bradykinesia. For each stimulation trial, subjects performed extremity motor tasks. Sensor data were recorded continuously. We identified STN DBS parameters that were associated with improved upper extremity bradykinesia symptoms using a mixed linear regression model. Results: We recruited 22 subjects (6 females) for this study. The 180 Hz STN DBS (compared to the 60 Hz STN DBS) and dopaminergic medications improved all subcomponents of upper extremity bradykinesia (motor speed, amplitude, and rhythm). For the motor rhythm subcomponent of bradykinesia, ventral contacts yielded improved symptom improvement compared to dorsal contacts. Conclusion: The differential impact of high- and low-frequency STN DBS on the symptoms of bradykinesia may advise programming for these patients but warrants further investigation. Wearable sensors represent a valuable addition to the armamentarium that furthers our ability to conduct objective, quantitative clinical assessments.
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MK, Asri. "PENULISAN ETUDE-ETUDE MUSIK TALEMPONG UNGGAN (Sebuah Usaha Pembelajaran Musik Tradisi Berbasis Literatur)." Humanus 13, no. 2 (2014): 156. http://dx.doi.org/10.24036/jh.v13i2.4725.
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“Talempong unggan”, a traditional music from Minangkabau community particularly in Unggan, Sumpur Kudus, Sijunjung Regency, West Sumatera Indonesia is classified into genre of “talempong duduak” (rea). Due to its special musical concept and the playing technics, this traditional music is selected as a practising course in the Karawitan Department of Indonesian Institute of Art (ISI) Padang Panjang since 1993 till now. In a system of class learning with many students, Talempong Unggan definitely needs supporting methods and learning technics suitable for the course where the students can reach their maximum skills. All the melody of “talempong unggan” that has been made as a material of practice is transcribed to the system of numeric notation and rhythm motive of “gendang” and “aguang” which is written into signs and special notation. All of qualitative data is formulated into finding methods, technics and etude of learning ensamble of Talempong Unggan the traditional music that learned in Karawitan Department of ISI Padang Panjang. Key words: Talempong Unggan, Methods, Technics, Etude
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Evangelista, Maurizio, Cilli, R. De Vitis, A. Militerno, and F. Fanfani. "Ultra-micronized Palmitoylethanolamide Effects on Sleep-wake Rhythm and Neuropathic Pain Phenotypes in Patients with Carpal Tunnel Syndrome: An Open-label, Randomized Controlled Study." CNS & Neurological Disorders - Drug Targets 17, no. 4 (2018): 291–98. http://dx.doi.org/10.2174/1871527317666180420143830.
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Background: Patients with carpal tunnel syndrome often suffer from fragmentary sleep. This study was designed to assess the effectiveness of treatment with ultramicronized palmitoylethanolamide in reducing pain intensity and improving quality of sleep in patients with neuropathic pain due to carpal tunnel syndrome. Methods: An open, controlled study was conducted on 42 patients awaiting carpal tunnel syndrome surgery, suffering from sleep disorders and painful symptoms and randomized into two groups. One group received ultramicronized palmitoylethanolamide (600 mg twice daily) during the pre- and postsurgery periods, while the other group did not receive any treatment except surgical therapy. The primary outcome measure was sleep quality assessment by the Pittsburgh Sleep Quality Index, with secondary outcome as painful symptomatology intensity evaluated by the Numeric Rating Scale. Results: At the end of the pre-surgery period (T1) there was a highly significant improvement (p<0.0001) in overall sleep quality with an increase of continuous sleep time and a reduction of sleep latency and disturbances as well as a significant mitigation (p<0.0001) of painful symptoms in favor of the treated group. Conclusion: Disturbed sleep patterns are very common in patients suffering from neuropathic pain due to carpal tunnel syndrome. Our results, albeit preliminary, suggest that ultramicronized palmitoylethanolamide administration favors a clear improvement of sleep quality, confirming a correlation between sleep disorders and pain intensity.
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Mulyaningrum, Dwidary, Ilham Minggi, Syafruddin Side, and Andi Muhammad Ridho Yusuf Sainon Andi Pandjajangi. "Approach Solution Numeric for Mathematical Models Celebrity Worship Behavior Among K-Pop Fans Based Wisdom Local in South Sulawesi Using Runge- Kutta method Order 6." Journal of Mathematics, Computations and Statistics 7, no. 2 (2024): 413–20. http://dx.doi.org/10.35580/jmathcos.v7i2.4201.
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Studies This explore the mathematical model of SFR with use run kutta order 6 that catches rate Behavior Worship Celebrities among fan loyal K-Pop. Main data obtained through direct questionnaire taken from communities in South Sulawesi Province , provide outlook about rhythm Behavior Worship Celebrities among K-Pop lovers . Research This aiming For to study phenomenon idolization K-Pop celebrities among fans in South Sulawesi through approach solution numerical . Using the SFR mathematical model and the Runge- Kutta method Order 6, results simulation show that K-Pop idolization in the region This Enough significant , influenced by social media as well as factor culture and social local . Data shows existence decline amount vulnerable fans to addicted to K-Pop, but fluctuation behavior addiction and decline number recovery still become attention . Research This highlight importance more intervention effective , such as therapy and support social , for overcome impact negative from idolization celebrity . Findings This also provides outlook valuable for development strategy in handle phenomenon idolization celebrities who continue develop in the future.
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Rydzik, Łukasz, Tomasz Pałka, Ewa Sobiło-Rydzik, et al. "An Attempt to Develop a Model of Brain Waves Using Quantitative Electroencephalography with Closed Eyes in K1 Kickboxing Athletes—Initial Concept." Sensors 23, no. 8 (2023): 4136. http://dx.doi.org/10.3390/s23084136.
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Background: Brain injuries are a common problem in combat sports, especially in disciplines such as kickboxing. Kickboxing is a combat sport that has several variations of competition, with the most contact-oriented fights being carried out under the format of K-1 rules. While these sports require a high level of skill and physical endurance, frequent micro-traumas to the brain can have serious consequences for the health and well-being of athletes. According to studies, combat sports are one of the riskiest sports in terms of brain injuries. Among the sports disciplines with the highest number of brain injuries, boxing, mixed martial arts (MMA), and kickboxing are mentioned. Methods: The study was conducted on a group of 18 K-1 kickboxing athletes who demonstrate a high level of sports performance. The subjects were between the ages 18 and 28. QEEG (quantitative electroencephalogram) is a numeric spectral analysis of the EEG record, where the data is digitally coded and statistically analysed using the Fourier transform algorithm. Each examination of one person lasts about 10 min with closed eyes. The wave amplitude and power for specific frequencies (Delta, Theta, Alpha, Sensorimotor Rhythm (SMR), Beta 1, and Beta2) were analysed using 9 leads. Results: High values were shown in the Alpha frequency for central leads, SMR in the Frontal 4 (F4 lead), Beta 1 in leads F4 and Parietal 3 (P3), and Beta2 in all leads. Conclusions: The high activity of brainwaves such as SMR, Beta and Alpha can have a negative effect on the athletic performance of kickboxing athletes by affecting focus, stress, anxiety, and concentration. Therefore, it is important for athletes to monitor their brainwave activity and use appropriate training strategies to achieve optimal results.
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Andra, Cut Aryfa, Refli Hasan, Andi Khairul, Ratna Mariana Tamba, and Muhammad Hafiz Mahruzza Putra. "Cardiometabolic Risk Assessment through Comprehensive Screening for Early Detection." Journal of Endocrinology, Tropical Medicine, and Infectious Disease (JETROMI) 5, no. 3 (2023): 127–34. http://dx.doi.org/10.32734/jetromi.v5i3.12818.
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Background: The development of cardiovascular disease (CVD) is influenced by many risk factors, such as tobacco use, an unhealthy diet, and physical inactivity, that could result in obesity, hypertension, dyslipidemia, and diabetes mellitus. Continuing exposure to these risk factors can be prevented by routine screening for populations without any clinical symptoms. This study was conducted to obtain data on cardiometabolic profiles of people who participated in the Community Service Program of the Department of Cardiology and Vascular Disease, University of Sumatera Utara. Method: This research was a descriptive study with a cross-sectional research design. The study aims to screen for the cardiometabolic profile in the people of Tebing Tinggi City. Cardiovascular risk factors were obtained from interviewing the participants and on-the-spot examination with validated measurement tools. All data were processed and analyzed statistically using SPSS ver.26. Categorical variables are presented with frequency (n) and percentage (%). Numeric variables are presented with mean and standard deviation (SD) values for normally distributed data. As for the normal non-distributed data numerical variables are presented with the middle value (median) and the interquartile range. Results: All subjects in this study (n= 102) are 39 male and 63 female. Most participants were in the 4th to 5th decade, with normal heart rates and normal sinus rhythm. Most female participants had a low risk for obstructive sleep apnea (OSA) and the male had intermediate risk. Most participants had normal random blood sugar and total cholesterol but mostly had obesity. Near 20-30% of participants were grade I and II systolic hypertensives but normally had diastolic blood pressure. Conclusion: In this study, most of the cardiometabolic risks of patients in the Community Service program were obesity, followed by hypertension.
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Tomalski, Przemysław. "Sezonowa zmienność zasobów wód podziemnych o zwierciadle swobodnym w zlewni Pilicy." Annales Universitatis Mariae Curie-Sklodowska, sectio B – Geographia, Geologia, Mineralogia et Petrographia 70, no. 2 (2016): 101. http://dx.doi.org/10.17951/b.2015.70.2.101.
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<p>The paper attempts to identify seasonal variability of groundwater table in the Pilica catchment. Procedure created by Ch. G. Markham was used. It allows to compare results with analogical characteristics of other aquifers from central Poland. Sixteen piezometers were used for the research.</p><p>They represent shallow aquifers located in the Pilica catchment and its surrounding and they are part of a measurement network of PIG-PIB (years from 2003 till 2014 were used). All of the aquifers with 10 years data series were chosen for the analyzed group. They represent the whole spectrum of occurrence of groundwaters in the Pilica catchment.</p><p>Before the analysis homogeneity of time series was checked by two statistical tests: parametric F-Snedecor test (exams null hypothesis about variance equality) and non-parametric series test (exams null hypothesis about origin of two samples from the same general population). All of numeric strings were statistically homogeneous.</p><p>Time series of mean monthly depth to groundwater table in all piezometers were changed into groundwater ordinates. In that way, maximum values are compared with the maximum level of groundwater table. Next, for all the aquifers the Markham characteristics of seasonal variability were calculated. First of them is seasonality index (IS) and it ranges from 0 to 100%. The second characteristic is time of concentration (WPK). During the interpretation of WPK values it is important to remember that this characteristic shows only time of concentration (it must not be associated with terms of maximum level of the examined phenomenon).</p><p>Aquifers in the Pilica catchment are characterized by differential seasonality index raning from 1 to 30%. It means that rhythm of groundwater table changes is not seasonal in part of aquifers. Despite that, the seasonal variability of groundwater level is stronger in the Pilica catchment than in other aquifers in central Poland (IS is on average almost double). Time of concentration coefficients are differential too. They occur from February to July in the Pilica catchment, while in the whole central Poland they are concentrated in two terms (late winter and summer). Unlike other parts of central Poland, changes of groundwater resources are characterized by poor correlation with hydrogeological parameters of aquifers or mean depth to the groundwater level in piezometers in the Pilica catchment.</p>
Dissertations / Theses on the topic "Numeric rhythm"
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Krause, Miller Stanley. "PROSE RHYTHM IN THE ORATIONS AND EPISTLES OF MARCUS ANTONIUS MURETUS." UKnowledge, 2009. http://uknowledge.uky.edu/gradschool_theses/599.
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Marcus Antonius Muretus, the sixteenth century French and Italian Humanist orator and professor, employed, in his orations and, to a lesser degree, in his epistles, a system of metrical prose rhythm (numerus) consistent with Ciceronian practice. Muretus did not, however, seek to employ accentual prose rhythms (cursus) characteristic of medieval prose; nevertheless, such rhythms arose naturally in his work as a byproduct of metrical prose rhythm. These findings, confirmed by statistical analysis, are congruent with the assumption that Humanist authors preferred Ciceronian stylistics to those associated with the “middle ages,” in accord with the tripartite Humanist narrative of history, in which the Humanists usher in a Renaissance of learning and elegance lost by preceding centuries.
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Liao, Shueh-Ying. "L’usage de la figure rythmique dans l’analyse du procédé incitatif (Xing 興) : une méthode de lecture expérimentale pour le Shijing 詩經". Thesis, Paris, EPHE, 2015. http://www.theses.fr/2015EPHE4027.
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La thèse a pour corpus le Canon des Poèmes (Shijing 詩經). S’appuyant sur l’étude de diverses interprétations des Poèmes, elle propose une application numérique pour interpréter le procédé incitatif (Xing 興) qui, jusque-là, n’a pas été clairement défini au plan rythmique. On y considère le sinogramme à la manière d’une note musicale, ou plus précisément d’une sino-syllabe (hanzi -yinjie 漢字-音節). La thèse peut alors se baser sur trois principes d’analyse :1. le contraste d’effectifs des sino-syllabes ;2. le calcul combinatoire des sino-syllabes ;3. l’échelle de perception des sino-syllabes.En suivant ces trois principes d’analyse, la thèse expose une méthode de lecture expérimentale qui distingue deux aspects dans les sino-syllabes aperçues pendant la lecture : les composants fondamentaux (qui créent le rythme dominant) et les idées principales (qui constituent le sujet thématique). La collaboration harmonieuse du rythme dominant avec le sujet thématique, révèle un système de figuration qui transforme les propos en langage poétique sur le plan rythmique. Ce système sert de référence interne au corpus pour objectiver le rapport rythmique entre le motif initial (= premier groupe de vers) et le motif final (= deuxième groupe de vers), dans la strophe créée par le procédé de Xing. On propose de nommer ce système « figure rythmique » (jielü xiuci 節律修辭)<br>The present thesis has chosen to center its attention on The Book of Odes. After the study of diverse interpretations of these poems, the thesis is brought to suggest using numeric humanities in the analysis of what Xing calls “the incentive process” whose rhythmic figure has not yet been clearly defined. At the condition that a sinogram could be considered a musical note, it would be more accurate to call it a “sino-syllable” (hanzi-yinjie 漢字-音節). The results are relayed by these three principles: 1. The contrast of occurrences between sino-syllables 2. The sino-syllables’ combinatorial calculation 3. The scale of perception in comprehending sino-syllablesApplying these principles of analysis, the thesis then reveals an experimental method of reading which sets forth two aspects: the basic components that create the dominant rhythm and the mean ideas that constitute the thematic subject.The harmonious relationship of the dominant rhythm with the thematic subject reveals a system that rhythmically transforms words to poetic language. This metaphorical system, called “rhythmic figure” (jiulü xiuci 節律修辭) for the purpose of this research, serves as an internal reference to the corpus to manifest the rhythmic relationship between the first and final patterns in verses produced with Xing’s method
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Darra, Daniele. "A misura di canto. Aspetti della metrica nei libretti scritti per Verdi." Doctoral thesis, Università degli studi di Padova, 2014. http://hdl.handle.net/11577/3424658.
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The object of this research is the complex literary work called libretto and more specifically its metrics. The peculiarity of the libretto resides in the multiple factors which interact in it. It is first and foremost a poetic text which be however inevitably integrated into two non-literary contexts: the musical and the theatrical one. The libretto is assimilated by those contaxts and their mechanisms, from its creation up to the performance. The metrical analyis, of which I will give the first, punctual results, has been carried out on the libretti composed for Verdi in italian, conceived by different authors in different periods in a time span of about sixty years (from 1839, when Oberto conte di San Bonifacio went in première up to 1893, the staging of Falstaff). I analyzed how traditional metrical forms were selected and used in order to adapt to the complex melodramatic code inside which the libretto will function. I have also tried to investigate whether the internal formal articulation of this highly misregarded poetic product evolved in Verdi's long production.<br>Il composito prodotto letterario denominato libretto d'opera, e più precisamente l'aspetto metrico che lo caratterizza, costituisce l'oggetto del lavoro. La particolarità della sua natura nasce dall'eterogeneità dei fattori chiamati ad interagire nella sua stesura, trattandosi, in primo luogo, di un testo poetico, destinato però ad essere integrato e ad alimentare due “contesti” non letterari: quello musicale ed infine quello teatrale, dai quali, già all'atto della composizione e successivamente dell'esecuzione, viene inglobato ed assimilato all'interno dei loro meccanismi. L'analisi metrica, di cui s'intende qui fornire i primi, puntuali risultati, è stata condotta sui libretti italiani composti per Giuseppe Verdi, frutto del lavoro di autori diversi, concepiti in anni diversi nell'arco di circa un sessantennio (dal 1839, anno della prima dell'Oberto, fino al Falstaff messo in scena nel 1893), al fine di esaminare in quale maniera le forme metriche tradizionali siano state selezionate e disposte per adeguarsi al complesso codice melodrammatico entro cui il libretto è destinato ad operare, e se e come attraverso gli anni della lunga carriera di Verdi sia andata modificandosi l'interna articolazione formale di questo ambiguo e spesso screditato testo poetico.
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Jacobsson, Martin. "De musica liber VI / Aurelius Augustinus : A critical edition with a translation and an introduction." Doctoral thesis, Stockholms universitet, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-75161.
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Around the time of his famous conversion in 386, Augustine planned to dedicate a treatise to each of the artes liberales. However, he finished only a work on grammar and the first part of the De musica (books I-VI), which deals with rhythmus\the second part, which was to treat melos, was never written, since Augustine became occupied with his ecclesiastical career. The present work is the first critical edition of the sixth book of the De musica; the Latin text is accompanied by an English translation. The introduction includes a full analysis of the manuscript tradition from the 8th to the 14th century and a selective analysis of the later manuscript tradition. Among the conclusions reached are that all extant manuscripts descend from a single archetype which is not identical with the original text, that most manuscripts can be divided into four families, and that the text can be established on the basis of six of the oldest manuscripts. The introduction also contains a discussion of the much-debated question concerning Augustine's own revision of the sixth book, a section where solutions are proposed to several textual problems that were confronted during the establishment of the text, and a selective commentary on the contents of the sixth book of the De musica.
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Campista, Fernanda Fernandes. "Análise de vibrações e estudo de conforto humano sobre pisos mistos (aço-concreto) submetidos a ações humanas rítmicas." Universidade do Estado do Rio de Janeiro, 2015. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=8327.
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Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro<br>Este trabalho tem por objetivo avaliar o comportamento dinâmico de pisos
mistos (aço-concreto) sob a ação de cargas provenientes das atividades humanas
rítmicas, especificamente a prática de ginástica aeróbica, sob o ponto de vista do
conforto humano. Tal avaliação torna-se necessária por crescentes problemas
estruturais associados às vibrações excessivas, decorrentes da concepção de
sistemas estruturais com baixos níveis de amortecimento e com frequências naturais
cada vez mais baixas e bastante próximas das faixas de frequência das excitações
associadas às atividades humanas rítmicas. O modelo estrutural investigado baseiase
em um piso misto (aço-concreto) submetido a aulas de ginástica aeróbica. A
modelagem numérica do piso misto investigado foi realizada com base no emprego
do programa ANSYS e foram utilizadas técnicas de discretização por meio do
método dos elementos finitos (MEF). As cargas aplicadas sobre o piso, oriundas das
atividades aeróbicas, são simuladas através de dois modelos de carregamentos
dinâmicos distintos. Uma extensa análise paramétrica foi desenvolvida sobre o
modelo estrutural investigado e a resposta dinâmica do sistema foi obtida, em
termos dos deslocamentos e das acelerações, e comparada com os limites
recomendados por normas e critérios de projeto. A resposta dinâmica do piso
estudado viola os critérios de projeto relativos ao conforto humano e indica níveis de
vibrações excessivas nos casos de carregamento dinâmicos analisados nesta
dissertação.<br>This study aims to assess the dynamic behaviour of steel-concrete composite
floors when subjected to human rhythmic activities, specifically the practice of
aerobics, from the point of view of human comfort. This evaluation is required due to
the increasing of the structural problems associated with excessive vibrations, related
to structural systems designed with low levels of damping and low natural
frequencies, close to the excitation frequencies associated with human rhythmic
activities. The investigated structural system is composed by a steel-concrete
composite floor subjected to aerobics. The proposed analysis methodology adopted
the usual mesh refinement techniques present in the finite element method (FEM)
simulations implemented in the ANSYS program. The loads applied on the floor,
related to aerobics, are simulated using two different dynamic loading models. An
extensive parametric analysis was developed on the investigated structural model
and the system dynamic response was obtained, based on displacement and
accelerations values, and compared with the recommended limits by standards and
design criteria. The studied floor dynamic response violated the human comfort
design criteria and indicated levels of excessive vibration in the investigated dynamic
loading cases along this dissertation.
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Askim, Peter Andrew 1971. "3x5 for concert band ; an analysis of the numerical bases of rhythm, gesture, melody and form." 2006. http://hdl.handle.net/2152/12991.
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洋, 上野. "Specificity of spatio-temporal order under rhythmic environmental parameter : cooperation of real-world experiments with numerical modeling." Thesis, 2021. https://doshisha.repo.nii.ac.jp/?action=repository_uri&item_id=28495.
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Rodrigues, Bárbara Filipa Silva. "Modelação matemática do ritmo circadiano da Arabidopsis thaliana." Master's thesis, 2020. http://hdl.handle.net/10316/93512.
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Dissertação de Mestrado em Matemática apresentada à Faculdade de Ciências e Tecnologia<br>This thesis aims to study and simulate the biological oscillators that are used to model the circadian rhythms of plants, in particular the Arabidopsis thaliana plant. This document is divided into four chapters, being the first one to give an introduction to the theme of the thesis and to point out main motivation for studying circadian rhythms and biological clocks. Still in this chapter, it is exemplified how the modelling of chemical networks is carried out, since biological clocks are based on chemical reactions that occur at the cellular level. The second chapter is devoted to the study of ordinary differential equations and the numerical methods used in its integration. It starts by establishing the conditions that ensure the existence and uniqueness of the solution as well as studying stability and asymptotic stability, with emphasis on non-linear problems. In what concerns the numerical methods, the consistency and convergence properties were analysed and a detailed study about the stability issues was also presented. The implementation of the methods was also addressed, in particular thepresentation of algorithm for the step size control used in the numerical integration and the discussion on how certain methods can improve performance than others for the type of problems that are relevant in the context of our problem, defining a criteria to for choosing the numerical methods. The third chapter considers a qualitative analysis of the so-called biochemical oscillators, in particular the analysis of stability and bifurcations in systems of nonlinear ordinary differential equations.The study was particularised for systems of differential equations in dimensions two and three. Also in this chapter, it was presented an optimisation algorithm for the estimation of parameters in the models. Finally, the last chapter is devoted to describing the Arabidopsis thaliana circadian cycle and defining a mathematical model for the biological oscillators that characterise this cycle. Using the numerical methods presented in previous chapters, the numerical simulation of the model was also considered in order to address several questions with biological relevance. The chapter ends with the analysis and modelling of the photoperiod flowering phenomenon and several questions relevant questions were also considered. It should be noted that this study is not yet presented in literature and that it was discussed in direct contact with researchers in the field of Biology. The thesis ends with an appendix that presents the definition of standard vector and matrix norms as well as some relevant results on logarithmic norms.<br>Esta dissertação tem como objectivo estudar e simular os osciladores biológicos que permitem modelar os ritmos circadianos das plantas, em particular da Arabidopsis thaliana. O presente documento está divididoem quatro capítulos. O primeiro é um capítulo introdutório onde se começa por definir os objetivos da dissertação e a importância do estudo dos ritmos circadianos e dos relógios biológicos. Ainda nesse capítulo, exemplifica-se a forma como é feita a modelação de redes químicas, pois os relógios biológicos têm por base fenómenos químicosque ocorrem ao nível celular. O segundo capítulo é dedicado ao estudo das equações diferenciais ordinárias e ao dos métodos numéricos usados para as resolver. Começa-se por estudar as questões relacionadas com a existência e unicidade de solução e, posteriormente, aborda-se o estudo da estabilidade e estabilidade assintótica, com especial ênfase em problemas não lineares. Relativamente aos métodos numéricos, analisaram-se os resultados deconsistência e convergência e apresentou-se um estudo sobre a sua estabilidade. Foi ainda abordada a questão da implementação, nomeadamente a forma eficaz de efectuar o controlo do passo na integração numérica e como certos métodos podem revelar melhor desempenho que outros no tipo de problemas que pretendemos considerar,definindo, deste modo, um critério para a escolha dos métodos a usar. No terceiro capítulo considera-se a análise qualitativa dos chamados osciladores bioquímicos, em particular a análise da estabilidade e dasbifurcações em sistemas de equações diferenciais ordinárias. Esse estudo foi particularizado para sistemas de dimensão dois e três. Foi ainda abordada a questão da estimação dos parâmetros que descrevem os modelosconsiderados. Finalmente, o último capítulo é dedicado à descrição do ciclo circadiano da Arabidopsis thaliana e definindo um modelo matemático para os osciladores biológicos que caracterizam este ciclo. Procedeu-se também àsimulação numérica do modelo com recurso aos métodos considerados nos capítulos anteriores e analisadas várias questões com relevância biológica. O capítulo termina com a modelação do fenómeno da floração fotoperiódica de forma a poder responder também a várias questões com relevância prática. De salientar que esta modelação e o estudo não se encontra presente na literatura e que foi discutida em contacto direto com investigadores da área da Biologia. A dissertação termina com um anexo onde são apresentadas as noções de normas vetoriais e matriciaisbem como alguns resultados relevantes sobre normas logarítmicas.
Books on the topic "Numeric rhythm"
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Kamenskaya, Valentina, and Leonid Tomanov. The fractal-chaotic properties of cognitive processes: age. INFRA-M Academic Publishing LLC., 2020. http://dx.doi.org/10.12737/1053569.
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In the monograph the literature information about the nature of stochastic processes and their participation in the work of the brain and human behavior. Established that the real cognitive processes and mental functions associated with the procedural side of external events and the stochastic properties of the internal dynamics of brain systems in the form of fluctuations of their parameters, including cardiac rhythm generation and sensorimotor reactions. Experimentally proved that the dynamics of the measured physiological processes is in the range from chaotic regime to a weakly deterministic — fractal mode. Fractal mode determines the maximum order and organization homeostasis of cognitive processes and States, as well as high adaptive ability of the body systems with fractal properties. The fractal-chaotic dynamics is a useful quality to examine the actual physiological and psychological systems - a unique numerical identification of the order and randomness of the processes through calculation of fractal indices. The monograph represents the results of many years of experimental studies of the reflection properties of stochastic sensorimotor reactions, as well as stochastic properties of heart rate in children, Teens and adults in the age aspect in the speech activity and the perception of different kinds of music with its own frequency-spectral structure. 
 Designed for undergraduates, graduate students and researchers that perform research and development on cognitive psychology and neuroscience.
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Beard, Danny. The Language of Music, Music Theory for Non-Majors. University of Southern Mississippi, 2020. http://dx.doi.org/10.18785/oer.003.
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The Language of Music, Music Theory for Non-Majors, is a textbook written to share the fundamentals of music notation with students outside of schools of music. Topics covered include rhythmic notation, meter and time signatures, pitch notation, scales, key signatures, intervals, triads and Roman numeral and lead sheet notation.
Book chapters on the topic "Numeric rhythm"
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Zieliński, Tomasz, Johnny Hay, and Andrew J. Millar. "Period Estimation and Rhythm Detection in Timeseries Data Using BioDare2, the Free, Online, Community Resource." In Methods in Molecular Biology. Springer US, 2021. http://dx.doi.org/10.1007/978-1-0716-1912-4_2.
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AbstractOne of the key objectives of data analysis in circadian research is to quantify the rhythmic properties of the experimental data. BioDare2 is a free, online service which provides fast timeseries analysis, attractive visualizations, and data sharing. This chapter outlines the description of an experiment for BioDare2 and how to upload and analyze the numerical timeseries data.
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Benadon, Fernando. "Reflections." In Swinglines. Oxford University PressNew York, 2024. http://dx.doi.org/10.1093/oso/9780197659977.003.0011.
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Abstract This final chapter situates the pleasures of gathering and studying timing data within the three-stage framework of theory/analysis/claim. Backed with a brief modern history of machine-assisted timing measurements from the late 1800s to the 1960s, the discussion provides readers with context on the kind of numeric data that rhythm theorists often feed into analysis, and considers how this process may lead to broader claims about musical structure. The benefits of technological objectivity and the prescriptiveness of music notation are then weighed against perceptual and cultural factors. Two closing excerpts by Jimi Hendrix and Claude Debussy illustrate how timing measurements, or the lack thereof, relate to other forms of representation (such as scores or ear-based transcriptions) in the application of a starting theory.
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"X. Les numeri/rhythmi." In L'image organum. Brepols Publishers, 2001. http://dx.doi.org/10.1484/m.stmh-eb.4.00211.
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Hasty, Christopher. "Discontinuity of Number and Continuity of Tonal “Motion”." In Meter as Rhythm. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780190886912.003.0005.
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This chapter addresses the opposition of metrical and tonal organization that appears in many current theories of musical rhythm. This disparity arises from conceiving of duration as abstract quantity or “time span” rather than as endurance or the process through which something comes to endure. In this abstraction, “motion,” “energy,” and “tension and relaxation” are ascribed to things that happen “in” time—and not to time itself. Abstract duration, conceived as quantitatively determinant time span, is solely the product of measurement; and to take a measurement, one must isolate points of initiation and termination. These points, even if they are not represented by numbers, have the properties of numbers, among which is the property of discontinuity. Meanwhile, the idea of continuous tonal motion, based on the notions of co-presence and the priority of whole over part, points to a way of detaching duration from numerical measurement.
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Pierre-Jean, Morgane, Guillaume Bouzille, Mathilde Bories, Pascal Le Corre, and Marc Cuggia. "Leveraging Clinical Data Warehouses to Measure Impact of Update Prescription Guidelines of Polyvalent Immunoglobulins in 2018 in France." In Caring is Sharing – Exploiting the Value in Data for Health and Innovation. IOS Press, 2023. http://dx.doi.org/10.3233/shti230131.
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In France and in other countries, we observed a significant growth in human polyvalent immunoglobulins (PvIg) usage. PvIg is manufactured from plasma collected from numeral donors, and its production is complex. Supply tensions have been observed for several years, and it is necessary to limit their consumption. Therefore, French Health Authority (FHA) provided guidelines in June 2018 to restrict their usage. This research aims to assess the guidelines’ impact of the FHA on the use of PvIg. We analyzed data from Rennes University Hospital, where all PvIg prescriptions are reported electronically with quantity, rhythm, and indication. From the clinical data warehouses of RUH, we extracted comorbidities and lab results to evaluate the more complex guidelines. We globally noticed a reduction in the consumption of PvIg after the guidelines. Compliance with the recommended quantities and rhythms have also been observed. By combining two sources of data, we have been able to show an impact of FHA’s guidelines on the consumption of PvIg.
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Jenkyns, Richard. "The Latin Experience: Virgil and the Poets." In Virgil’s Experience. Oxford University PressOxford, 1998. http://dx.doi.org/10.1093/oso/9780198140337.003.0014.
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Abstract ‘Arma gravi numero violentaque bella’ (Weapons and violent wars in heavy rhythm) —so Ovid begins his Amores, comically irrelevant from the start. Shorter poems almost always and even longer works quite often were known by their opening words: beginning ‘Cynthia prima’, Propertius had established that his first book should be called Cynthia—fittingly, since his love passion dominates it through out. But no one could call Ovid’s amatory collection ‘Arma gravi numero’ without absurdity; and besides, every reader will know that this is not the most famous Augustan work to take ‘arma’ for its beginning.’
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Venäläinen, Juhana. "Getting texts done: affective rhythms of reading in quantified academia." In Affective Capitalism in Academia. Policy Press, 2023. http://dx.doi.org/10.1332/policypress/9781447357841.003.0010.
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Chapter 10 investigates the transformations in academic working rhythms and how they contribute to reshaping the academic working subject. In recent decades, doctrines and techniques of performance management have transformed the university sector into a ‘quantified academia’, a regime largely driven by numerical indicators. The chapter examines the affective dynamics of quantification through a particular subset of scholarly work, namely, academic reading. For many academics, reading still seems to sit at the core of academic proficiency and professional identity. However, from the perspective of quantifiable outcomes, reading remains mostly hidden and ‘beyond measure’. In the analysis, a set of affective rhythms is proposed as analytical clues for understanding how academic reading feels today. The three rhythms discussed are insufficiency, jumpiness and hastiness. Each expresses a distinctive affective and temporal perspective to reading as a pivotal aspect of academic work.
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Sasayama, Teruyoshi, Shoji Hamada, and Tetsuo Kobayashi. "Application of Prewhitening Beamformer with Linear Constraints for Correlated EEG Signal Source Estimation." In Advances in Bioinformatics and Biomedical Engineering. IGI Global, 2013. http://dx.doi.org/10.4018/978-1-4666-2113-8.ch025.
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To investigate the effect of signal correlation, the authors compared the relative abilities to estimate the source of an ERD/ERS signal among minimum variance beamformer (MVBF), linearly constrained (LC)-MVBF, prewhitening beamformer (PWBF), and LC-PWBF during the measurement of correlated signals. In numerical simulations, equivalent current dipoles were placed in the primary motor cortex to detect the modulation of µ and ß rhythms. It was confirmed that the location bias of LC-PWBF was smaller than that of MVBF, LC-MVBF, and PWBF. These results suggest that LC-PWBF is useful for estimating the location of signal sources that are highly correlated and have low signal-to-noise ratio.
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Plastino, A., and M. T. Martin. "Generalized Information Measures and the Analysis of Brain Electrical Signals." In Nonextensive Entropy. Oxford University Press, 2004. http://dx.doi.org/10.1093/oso/9780195159769.003.0020.
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The traditional way of analyzing brain electrical activity, on the basis of electroencephalogram (EEG) records, relies mainly on visual inspection and years of training. Although it is quite useful, of course, one has to acknowledge its subjective nature that hardly allows for a systematic protocol. In order to overcome this undesirable feature, a quantitative EEG analysis has been developed over the years that introduces objective measures. These reflect not only characteristics of the brain activity itself, but also clues concerning the underlying associated neural dynamics. The processing of information by the brain is reflected in dynamical changes of the electrical activity in (i) time, (ii) frequency, and (iii) space. Therefore, the concomitant studies require methods capable of describing the qualitative variation of the signal in both time and frequency. In the present work we introduce new information tools based on the wavelet transform for the assessment of EEG data. In particular, different complexity measures are utilized…. The traditional electroencephalogram (EEG) tracing is now interpreted in much the same way as it was 50 years ago. More channels are used now and much more is known about clinical implication of the waves, but the basic EEG display and quantification of it are quite similar to those of its predecessors. The clinical interpretation of EEG records is made by a complex process of visual pattern recognition and the association with external and evident characteristics of clinical symptomatology. Analysis of EEG signals always involves the queries of quantification, i.e., the ability to state objective data in numerical and/or graphic form that simplify the analysis of long EEG time series. Without such measures, EEG appraisal remains subjective and can hardly lead to logical systematization [36]. Spectral decomposition of the EEG by computing the Fourier transform has been used since the very early days of electroencephalography. The rhythmic nature of many EEG activities lends itself naturally to this analysis. Fourier transform allows separation of various rhythms and estimation of their frequencies independently of each other, a difficult task to perform visually if several rhythmic activities occur simultaneously. Spectral analysis can also quantify the amount of activity in a frequency band.
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Uda, Takaaki, Masumi Serizawa, and Shiho Miyahar. "Development of Sand Spits and Cuspate Forelands with Rhythmic Shapes and Their Deformation by Effects of Construction of Coastal Structures." In Computational and Numerical Simulations. InTech, 2014. http://dx.doi.org/10.5772/57043.
Full textConference papers on the topic "Numeric rhythm"
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García, J. E., V. A. González-López, and M. L. Lanfredi Viola. "Copula-based analysis of rhythm." In INTERNATIONAL CONFERENCE OF NUMERICAL ANALYSIS AND APPLIED MATHEMATICS 2015 (ICNAAM 2015). Author(s), 2016. http://dx.doi.org/10.1063/1.4951927.
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Viola, M. L. Lanfredi, Jesús E. García, and V. A. González-López. "Markovian structure of interaction for three indicators of linguistic rhythm." In INTERNATIONAL CONFERENCE OF NUMERICAL ANALYSIS AND APPLIED MATHEMATICS ICNAAM 2021. AIP Publishing, 2023. http://dx.doi.org/10.1063/5.0162079.
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Lavrova, Anastasia I., and Eugene B. Postnikov. "Wavelet analysis of location and intensity of spatial rhythms in hippocampus." In 11TH INTERNATIONAL CONFERENCE OF NUMERICAL ANALYSIS AND APPLIED MATHEMATICS 2013: ICNAAM 2013. AIP, 2013. http://dx.doi.org/10.1063/1.4825592.
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Avari, H., F. Ghalichi, and M. Ahmadlouydarab. "A Numerical Study to Assess a Proper Relationship between Respiration Rhythm and Athletes' Activities." In 2008 Cairo International Biomedical Engineering Conference (CIBEC). IEEE, 2008. http://dx.doi.org/10.1109/cibec.2008.4786084.
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Demirer, R. Murat, and Oya Demirer. "A numerical bifurcation analysis of circadian rhythms in Pacemaker Neurons: RNA-protein synthesis modeling analysis." In 2016 Electric Electronics, Computer Science, Biomedical Engineerings' Meeting (EBBT). IEEE, 2016. http://dx.doi.org/10.1109/ebbt.2016.7483694.
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Popkov, Vyacheslav, Alexander Sterenberg, Vladimir Gusev, and Andrey Tyutyaev. "COGNITIVE GEOLOGY OF SUPERIMPOSED SCATTERING OF MOBILE ORE ELEMENTS, PROPER FORMS OF MULTISCALE STRUCTURAL STRESS STABILITY, BIOGENETIC ACCESS CODE OF RESOURCES AND FIELD ARTEFACTS." In GEOLINKS International Conference. SAIMA Consult Ltd, 2020. http://dx.doi.org/10.32008/geolinks2020/b1/v2/11.
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The authors present the theory is numerical / analytical method of multi-scaled 4D geomechanics – geo-dynamics of energy integration in geo-physical rhythms of Eigen-solution of Navier-Stokes equations for multi-level geological time space of evolution in structural compacted mass transfer at the basis of Newton’s Differential Law ∫V∫TρdS·∂2ξ/∂t2 following the integration formula of A. Einstein E(u,t)=ρVC2+∫V∫Tρ‹uv›dtdx. Сreate the theory (Restoration) and Maintenance of Water Eco-System with Given Parameters. They establish the geophysical seismic rhythms of geological cycles in deep structural formations of the Volga-Urals and Siberia and Kamchatka at dissipative emission, adsorption and nuclear magnetic resonance. The authors propose the systematic velocity model of convective diffusion drift of ρ<uv> in deep phase components of heterogenic structures with complexly structured geology in off-shore and global aeration of Middle Ridges from the Urals to the Rocky Mountains. They have also considered the energy time space of more than 4,5 billion years to find the organic markers of quantum photo-synthesis and multiple circulating energy waves in physical and chemical reactions of compacted formation genesis in fissile and relict shales, including the facies with symmetrical absolutely-saturated porosity of classical fields. They establish the geophysical seismic rhythms of geological cycles in deep structural formations of the Volga-Urals and Siberia and Kamchatka at dissipative emission, adsorption and nuclear magnetic resonance. The authors propose the systematic velocity model of convective diffusion drift of ρ‹uv› in deep phase components of heterogenic structures with complexly structured geology in off-shore and global aeration of Middle Ridges from the Urals to the Rocky Mountains. They have also considered the energy time space of more than 4.5 billion years to find the organic markers of quantum photo-synthesis and multiple circulating energy waves in physical and chemical reactions of compacted formation genesis in fissile and relict shales, including the facies with symmetrical absolutely-saturated porosity of classical fields’ cognitive geology, artefacts.
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Zhao, Xiaopeng, David G. Schaeffer, Wanda Krassowska, and Daniel J. Gauthier. "A Model-Independent Technique for Eigenvalue Identification and Its Application in Predicting Cardiac Alternans." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-43380.
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Predicting cardiac alternans is a crucial step toward detection and prevention of ventricular fibrillation, a heart rhythm disorder that kills hundreds of thousands of people in the US each year. According to the theory of dynamical systems, cardiac alternans is mediated by a period-doubling bifurcation, which is associated with variations in a characteristic eigenvalue. Thus, knowing the eigenvalues would allow one to predict the onset of alternans. The existing criteria for alternans either adopt unrealistically simple assumptions and thus produce erroneous predictions or rely on complicated intrinsic functions, which are not possible to measure experimentally. In this work, we present a model-independent technique to estimate a system’s eigenvalues without requirements on the knowledge of the underlying dynamic model. The method is based on principal components analysis of a pseudo-state space; therefore, it allows one to compute the dominant eigenvalues of a system using the time history of a single measurable variable, e.g. the transmembrane voltage or the intracellular calcium concentration in cardiac experiments. Numerical examples based on a cardiac model verify the accuracy of the method. Thus, the technique provides a promising tool for predicting alternans in real-time experiments.
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Etheridge, Michael, Harishankar Natesan, Radek Lopusnik, and Adam Cates. "Development and Validation of Numerical Model Simulation for RF Ablation Using the Isolator Synergy Clamp." In 2018 Design of Medical Devices Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/dmd2018-6949.
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Thermal ablation is rapidly becoming a standard of care for the treatment of atrial fibrillation (AF), a cardiac disorder characterized by irregular heart rhythm and estimated to impact more than 33 million people worldwide [1]. AtriCure is a company that specializes in epicardial ablation for AF and here we describe the development of a numerical model to study the performance of the Isolator® Synergy™ Clamp bipolar radiofrequency (RF) device. The clamp device features two jaws with embedded electrode pairs, which are used to secure the tissue by clamping across the left atrium (as shown in Figure 1). Energy is applied between the bipolar electrodes at approximately 460 kHz through an impedance-based control algorithm and is additionally duty-cycled between the pairs to further distribute the heating. Patient anatomies vary greatly and measured impedance will depend on atrial wall thickness, epicardial fat, electrode-tissue engagement, and structural variations. Further, tissue conductivity (inversely related to impedance) increases as the tissue is heated, leading to a complicated process, where the heat generation depends on the impedance, which in turn is a strong function of temperature. Energy delivery continues until a phase change in the tissue’s water content occurs, producing a sharp increase in impedance and termination of the ablation. Therefore, since tissue impedance and heating drive the device’s performance, a majority of the effort described here focuses on the validation work done to ensure the model is based on an accurate description of the tissue properties and response. While previous modeling of RF ablation often does include temperature-dependence of tissue properties, the referenced values vary notably and rarely include direct validation of modeling results to benchtop data. Variations in anatomy and fat content can dramatically impact the energy delivery and patient-to-patient treatment efficacy, so an accurate description of the tissue response is critical to understanding the limitations of current energy delivery algorithms and provides an invaluable tool in designing more efficacious ablation devices and algorithms.
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Menétrey, Philippe, Lionel Moreillon, and Maléna Bastien-Masse. "Strengthening Paudèze bridges decks using UHPFRC struts." In IABSE Congress, New York, New York 2019: The Evolving Metropolis. International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/newyork.2019.1469.
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<p>Paudèze bridges are two 400‐m long parallel highway bridges located in Switzerland and opened to traffic in 1974. After over 40 years of service life, both bridges must be completely rehabilitated and strengthened while constantly maintaining 2 traffic lanes in both directions.</p><p>The bridge deck slab was strengthened using UHPFRC (Ultra‐High Performance Fiber Reinforced Concrete) struts. These inclined struts connect the end of the deck slab cantilever and the box girder web, forming a Warren truss. They thus reduce the bending moments in the deck slab and the existing steel reinforcement could be kept.</p><p>The joint between the prefabricated UHPFRC struts and the existing concrete web is done through a cast in‐ place UHPFRC beam, without any mechanical connection. Forces go through the joint and into the web by a combination of friction and compression forces.</p><p>Various experimental tests and numerical simulations confirmed the feasibility of this solution. In particular, the UHPFRC‐concrete web connection, the UHPFRC‐UHPFRC connection and the global behavior of the strut were tested and modelled.</p><p>The strengthening of the bridges decks took place between 2017 and 2019. The developed solution, using UHPFRC struts, was shown to be very effective to strengthen the deck and creates a rhythm in the structure.</p>
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Camacho, Erika, Richard Rand, and Howard Howland. "Dynamics of Two Van Der Pol Oscillators Coupled via a Bath." In ASME 2003 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/detc2003/vib-48593.
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In this work we study a system of two van der Pol oscillators, x and y, coupled via a “bath” z: x¨−ε(1−x2)x˙+x=k(z−x)y¨−ε(1−y2)y˙+y=k(z−y)z˙=k(x−z)+k(y−z) We investigate the existence and stability of the in-phase and out-of-phase modes for parameters ε &gt; 0 and k &gt; 0. To this end we use Floquet theory and numerical integration. Surprisingly, our results show that the out-of-phase mode exists and is stable for a wider range of parameters than is the in-phase mode. This behavior is compared to that of two directly coupled van der Pol oscillators, and it is shown that the effect of the bath is to reduce the stability of the in-phase mode. We also investigate the occurrence of other periodic motions by using bifurcation theory and the AUTO bifurcation and continuation software package. Our motivation for studying this system comes from the presence of circadian rhythms in the chemistry of the eyes. We present a simplified model of a circadian oscillator which shows that it can be modeled as a van der Pol oscillator. Although there is no direct connection between the two eyes, they can influence each other by affecting the concentration of melatonin in the bloodstream, which is represented by the bath in our model.