Academic literature on the topic 'Quintile class'
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Journal articles on the topic "Quintile class"
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L., J. F. "WHICH COUNTS MORE: ABILITY OR CLASS?" Pediatrics 98, no. 6 (1996): 1103. http://dx.doi.org/10.1542/peds.98.6.1103.
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There is plenty of evidence about social mobility in Britain. The best is the National Child Development Survey, which has analyzed all the children born in a single week in 1958 at various points in their lives. In "Two Nations? The Inheritance of Poverty and Affluence," the Institute for Fiscal Studies, an independent research group, analyzed this data. It found that by 1991, 34% of those in the highest income quintile had fathers who were also in the top income group; 11%, however, had fathers in the poorest quintile. In a society with full equality of opportunity, and ability distributed equally across the population, 20% of the richest quintile would have had fathers from the richest quintile, and 20% from the poorest. This suggests that opportunity is dispersed in Britain, but not fully equalized. But what if ability is not in fact distributed equally amongst the population? This question is explored, using the same data as the Institute for Fiscal Studies, in "Unequal but Fair?", a pamphlet by Peters Saunders, a sociologist at Sussex University, published last month by the Institute of Economic Affairs. He concludes that ability is greater at the top of the class/income pile than at the bottom, and that individual ability plays a crucial part in deciding where an individual will end up. Ability alone is well over twice as important as their class origins, three times more powerful than the degree of interest their parents showed in their schooling, and five times more powerful than their parents' level of education or the aspirations which their parents harbored for them while they were growing up.
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Mestry, Raj. "The effective and efficient management of school fees: Implications for the provision of quality education." South African Journal of Education 40, no. 4 (2020): 1–10. http://dx.doi.org/10.15700/saje.v40n4a2052.
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The Amended National Norms and Standards for School Funding (ANNSSF) policy of 2006 introduced a funding model to address equity in public schooling. Schools are ranked into one of five quintiles of which quintile 1 represents the poorest schools and quintile 5 the most affluent. The ANNSSF policy proposes that the state provide more funding for recurrent resources to poorer schools (quintiles 1, 2 and 3) than to quintiles 4 and 5 schools. Since affluent schools receive reduced state funding, school governing bodies (SGBs) are obliged to supplement state funding if they wish to continue providing quality education and improving learner achievement. Although intensive fundraising initiatives and sponsorships are viable solutions, the declining South African economy has prompted corporates to apply austerity measures such as limiting sponsorships to schools. Thus, SGBs are compelled to charge parents school fees as a means of supplementing state subsidies. In the study reported on here, qualitative research with an interpretivist paradigm to explore how SGBs manage school fees to sustain the provision of quality education was used. The findings reveal that, if school fees are effectively and efficiently managed, SGBs can continue employing additional staff above the post provisioning norms, reduce class sizes and procure state-of-the-art resources, resulting in high learner achievement.
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Pigden, Louise, and Andrew Garford Moore. "Exploring educational advantage in the UK via graduate employment of joint honours degrees by examining pre-university tariff and degree classification." Higher Education, Skills and Work-Based Learning 10, no. 2 (2019): 400–419. http://dx.doi.org/10.1108/heswbl-07-2019-0093.
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Purpose In the UK, the majority of university students specialise and study just one subject at bachelor degree level, commonly known in the UK as a single honours degree. However, nearly all British universities will permit students if they wish to study two or even three subjects, so-called joint or combined honours degrees, internationally known as a double major. The purpose of this paper is to explore the relationship between graduate employment, pre-university educational attainment and degree classification achieved. The study also explored student choice with respect to university prestige. Design/methodology/approach The authors analysed the complete data set provided from the Higher Education Statistics Agency Destination of Leavers from the Higher Education survey, and combined this with data from the POLAR4 quintiles, Universities and Colleges Admissions Service (UCAS) tariff points and degree classification. The data were analysed to establish whether there was a difference in the choices and highly skilled graduate employment of the joint honours students, focussing particularly on Russell Group and Post-92 Universities, in order to build on previous published work. Findings For any UCAS tariff band, the higher the POLAR4 quintile the higher the rate of highly skilled destination. Russell Group outperform the Post-92 graduates in their rates of highly skilled destinations, for any tariff band and for both joint and single honours degrees. Higher POLAR4 quintile graduates are more likely to study at the Russell Group, with this effect increasing the higher the UCAS tariff. With the exception of first class honours graduates from Post-92 universities, joint and single honours from the Russell Group have a higher rate of highly skilled destination than Post-92 in the next higher degree classification. Social implications Low POLAR4 quintile students with high UCAS tariffs are “under-matching” and there is an impact on their graduate employment as a result. Originality/value This study adds new insights into joint honours degrees and also reinforces the literature around educational advantage and achievement prior to university, and the impact on graduate employment. Educational disadvantage persists over the course of a university degree education, from the perspective of gaining graduate employment. Higher quintile graduates are proportionately more likely to achieve the highest degree classifications, and proportionately less likely to achieve the lowest classifications, than graduates from the lower quintiles. Joint honours graduates are less likely to achieve a first class honours degree than single honours, and this will affect their rate of highly skilled destination.
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Elorriaga, Natalia, Vilma E. Irazola, María D. Defagó, et al. "Validation of a self-administered FFQ in adults in Argentina, Chile and Uruguay." Public Health Nutrition 18, no. 1 (2014): 59–67. http://dx.doi.org/10.1017/s1368980013003431.
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AbstractObjectiveTo assess the reproducibility and validity among adults in the Southern Cone of Latin America (Argentina, Chile and Uruguay) of a self-administered FFQ to be used in the CESCAS I Study, an ongoing observational prospective cohort study to detect and follow up CVD and their risk factors, as well as in other epidemiological studies.DesignRelative validity of the FFQ was evaluated by comparing nutrient and selected food group intakes with those from three 24 h recalls (24HR) administered over 6 months. The FFQ was administered at baseline (FFQ1) and again after 3 months (FFQ2).SettingPrimary-care centres in Argentina, Chile and Uruguay.SubjectsAdults (n 147) aged 21–74 years.ResultsReproducibility (FFQ1 v. FFQ2): the intra-class correlation coefficients for nutrients ranged from 0·52 (potassium) to 0·74 (fat). Validity (FFQ1 v. the average of three 24HR): the Pearson correlations for energy-adjusted nutrients ranged from 0·39 (thiamin and cholesterol) to 0·59 (carbohydrate). Joint classification: overall, 66 % of participants in the lowest 24HR quintile were in the lowest one or two FFQ1 quintiles, and 62 % of those in the highest 24HR quintile were in the highest one or two FFQ1 quintiles. On average, only 4 % were misclassified into extreme quintiles.ConclusionsThe FFQ version for the Southern Cone seems to present moderate to acceptable relative validity and reliability for its use in the CESCAS I Study to measure dietary exposure.
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Sakamoto, Arthur, Li Hsu, and Mary E. Jalufka. "Comparing the Effects of Class Origins versus Race in the Intergenerational Transmission of Poverty." Social Sciences 11, no. 6 (2022): 257. http://dx.doi.org/10.3390/socsci11060257.
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Building upon prior research on intergenerational income mobility, we assess class effects versus racial effects on the probability of becoming a poor adult, broken down by gender. We define the class effect (for each race-and-gender group) as the difference between the probability that a person who was born into the lowest income quintile becomes poor and the probability that a person who was born into the highest income quintile becomes poor. For each minority-by-gender group, using Whites as the baseline, the racial effect is defined as the average racial differential in the probability of becoming a poor adult, irrespective of class origins. The results indicate that, for all minority-by-gender groups, the class effect is larger than the racial effect. Our findings underscore the continuing significance of the comparatively large effects of class origins, which have not been adequately acknowledged in recent research.
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Bush, Kathryn J., A. Olia Papacosta, Lucy T. Lennon, et al. "Influence of neighborhood-level socioeconomic deprivation and individual socioeconomic position on risk of developing type 2 diabetes in older men: a longitudinal analysis in the British Regional Heart Study cohort." BMJ Open Diabetes Research & Care 11, no. 5 (2023): e003559. http://dx.doi.org/10.1136/bmjdrc-2023-003559.
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IntroductionEvidence from longitudinal studies on the influence of neighborhood socioeconomic deprivation in older age on the development of type 2 diabetes mellitus (T2DM) is limited. This study investigates the prospective associations of neighborhood-level deprivation and individual socioeconomic position (SEP) with T2DM incidence in older age.Research design and methodsThe British Regional Heart Study studied 4252 men aged 60–79 years in 1998–2000. Neighborhood-level deprivation was based on the Index of Multiple Deprivation quintiles for participants’ 1998–2000 residential postcode. Individual SEP was defined as social class based on longest-held occupation. A cumulative score of individual socioeconomic factors was derived. Incident T2DM cases were ascertained from primary care records; prevalent cases were excluded. Cox proportional hazard models were used to examine the associations.ResultsAmong 3706 men, 368 incident cases of T2DM were observed over 18 years. The age-adjusted T2DM risk increased from the least deprived quintile to the most deprived: HR per quintile increase 1.14 (95% CI 1.06 to 1.23) (p=0.0005). The age-adjusted T2DM HR in social class V (lowest) versus social class I (highest) was 2.45 (95% CI 1.36 to 4.42) (p=0.001). Both associations attenuated but remained significant on adjustment for other deprivation measures, becoming non-significant on adjustment for body mass index and T2DM family history. T2DM risk increased with cumulative individual adverse socioeconomic factors: HR per point increase 1.14 (95% CI 1.05 to 1.24).ConclusionsInequalities in T2DM risk persist in later life, both in relation to neighborhood-level and individual-level socioeconomic factors. Underlying modifiable risk factors continue to need to be addressed in deprived older age populations to reduce disease burden.
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Pigden, Louise, and Andrew Garford Moore. "Educational advantage and employability of UK university graduates." Higher Education, Skills and Work-Based Learning 9, no. 4 (2019): 603–19. http://dx.doi.org/10.1108/heswbl-10-2018-0101.
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Purpose In the UK, the majority of university students specialise and study just one subject at bachelor degree level, commonly known in the UK as a single honours degree. However, nearly all British universities will permit students if they wish to study two or even three subjects, so-called joint or combined honours degrees, internationally known as a double major. The purpose of this paper is to explore whether educational advantage, measured by the “Participation of Local Areas” (POLAR) classification, correlated with rates of graduate destinations for joint and single honours graduates. This study focused particularly on Russell Group and Post-92 Universities. Design/methodology/approach The authors analysed the complete data set provided from the Higher Education Statistics Agency Destination of Leavers from the Higher Education survey, and combined this with data from the POLAR4 quintiles, which aggregate geographical regions across the UK based on the proportion of its young people that participate in higher education. The data were analysed to establish whether there was a difference in the highly skilled graduate employability of the joint honours students, focusing particularly on Russell Group and Post-92 Universities, in order to build on previous published work. Findings Single honours and joint honours graduates from higher participation POLAR4 quintiles were more likely to be in a highly skilled destination. However at both the Russell Group and the Post-92 universities, respectively, there was no trend towards a smaller highly skilled destinations gap between the honours types for the higher quintiles. For the highest POLAR4 quintile, the proportion of joint honours graduates was substantially higher at the Russell Group than at Post-92 universities. Furthermore, in any quintile, there were proportionately more joint honours graduates from the Russell Group, compared with single honours graduates, and increasingly so the higher the quintile. Research limitations/implications This study focused on joint honours degrees in the UK where the two or three principal subjects fall into different Joint Academic Coding System (JACS) subject areas, i.e. the two or three subjects are necessarily diverse rather than academically cognate. This excluded the class of joint honours degrees where the principal subjects lie within the same JACS subject area, i.e. they may be closer academically, although still taught by different academic teams. However, the overall proportion of joint honours graduates identified using the classification was in line with the UCAS (2017) data on national rates of combined studies acceptances. Practical implications All Russell Group graduates, irrespective of their POLAR4 quintile, were far more likely to be in a highly skilled destination than single or joint honours graduates of Post-92 universities. Even the lowest quintile graduates of the Russell Group had greater rates of highly skilled destination than the highest quintile from Post-92 universities, for both single and joint honours graduates. This demonstrated the positive impact that graduating from the Russell Group confers on both single and joint honours graduates. Social implications This study could not explain the much smaller gap in the highly skilled destinations between single honours and joint honours graduates found in the Russell Group, compared with the Post-92. Why do a higher proportion of joint honours graduates hail form the upper POLAR4 quintiles, the Russell Group joint honours graduates were more disproportionately from the upper POLAR4 quintiles and the joint honours upper POLAR4 quintiles represented such a larger proportion of the Russell Group overall undergraduate population? Other student characteristics such as tariff on entry, subjects studied, gender, age and ethnicity might all contribute to this finding. Originality/value This study demonstrated that, averaged across all universities in the UK, there was a trend for both single honours and joint honours graduates from higher participation POLAR4 quintiles to be more likely to be in a highly skilled destination, i.e. the more educationally advantaged, were more likely to be in a highly skilled destination, as a proportion of the total from each honours type. This accorded with HESA (2018b) data, but expanded those findings to include direct consideration of joint honours graduates.
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Diwakar G., Dilip. "Addressing utilization of the ICDS programme in Tamil Nadu, India: how class and caste matters." International Journal of Sociology and Social Policy 34, no. 3/4 (2014): 166–80. http://dx.doi.org/10.1108/ijssp-01-2013-0008.
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Purpose – The reduction in under nutrition is very slow in the past two decades in India even with high-economic growth rate and expansion in the ICDS programme. The ICDS evaluation studies majorly stressed on the general factors but they fail to acknowledge the structural factors - class and caste - while providing solutions. In Tamil Nadu nutritional status and utilization of ICDS services are better as compared to all-India average. The purpose of this paper is to explore the nutritional status of the poor and scheduled caste (SC) in Tamil Nadu and their utilization of ICDS services and to examine the role of group-specific factors in low reduction of nutritional status and utilization of ICDS programme. Design/methodology/approach – Multivariate analysis and logistic regression method were used using SPSS. Findings – The reduction of underweight is slow among the poorest and SC, moreover, the disparity between the richest and poorest as well as upper caste and SC is increasing. Logistic regression analysis shows that the poorest are marginalized, children belonging to poorer income group have higher chances of using the ICDS than the poorest and it is significant. After making the wealth quintile constant, the utilization of ICDS services across social groups showed that, though the poorest quintile has less access, within them the SC had utilized less compared to the other backward class (OBC). This indicates the poorest SCs are more vulnerable and marginalized across all quintiles and social groups. Research limitations/implications – In Tamil Nadu there is no sufficient sample of other caste/tribe and scheduled tribe. It would have given more insight on the utilization pattern. Lack of qualitative data has limited in explaining few phenomena to get more insight. Social implications – It will help the government to formulate more inclusive policy and address the issue of exclusion of marginalized people. Originality/value – The main core argument was based on the Tamil Nadu National Family Health Survey (NFHS) III unit-level data.
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Dallinger, Ursula. "The endangered middle class? A comparative analysis of the role played by income redistribution." Journal of European Social Policy 23, no. 1 (2013): 83–101. http://dx.doi.org/10.1177/0958928712456573.
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Contributing to the debate on the decline of the middle class, this article provides a comparative and longitudinal analysis of changes to the relative position of middle income groups in 19 (post)industrial countries between 1985 and 2005. How much did the income position of the middle worsen compared with more vulnerable groups? To what extent did public policies mitigate the market position of different income groups? The analysis is based on microdata of the Luxembourg Income Study. It divides the broad category of ‘middle class’ into three groups. Results suggest little change in the income position of the middle classes with respect to both market and disposable incomes. In most countries market incomes in the top quintile increased remarkably while the bottom quintile group lost out. The scale of government income redistribution has improved the position of the lowest income group, while burdening the highest income group. But it failed to fully compensate for the growing gap between the top and bottom income groups. The distance between the middle and the top incomes grew significantly, which might be one reason for the current public debate about an endangered middle class.
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Mishra, Prem Shankar, and Himanshu Chaurasia. "Nutrition status and socio-economic inequality among children (0-59 months) across different regions of Uttar Pradesh." International Journal of Scientific Reports 7, no. 11 (2021): 532. http://dx.doi.org/10.18203/issn.2454-2156.intjscirep20214102.
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<p class="abstract"><strong>Background: </strong>The paper aims to explore the magnitude of the nutritional status and socio-economic inequality among children in various regions of Uttar Pradesh in rural-urban areas.</p><p class="abstract"><strong>Methods:</strong> Fourth round of the National Family Health Survey (2015-16) data was used. Multivariate logistic regression and decomposition analysis were employed to understand the socio-economic inequality.</p><p class="abstract"><strong>Results: </strong>Finding shows that the Bundelkhand region has the highest prevalence of underweight (45.4 per 100) and wasted (29.5 per 100) children while Purvanchal region has the majority of stunted (48.3 per 100) children. The rural area has the highest percentage of underweight (40.9 percent) children followed by stunted (48.4 percent) and wasted (17.9 percent) respectively. About half of the children are underweight (46.3 percent) whose mother has no schooling, with more than 55 percent of the stunted children, and approximately 18 percent of children are wasted. Other findings of the study are: wasted children have shown a very different trend compared to stunted and underweight, which has gone up between NFHS-3 and NFHS-4 rounds, in both rural-urban areas of Bundelkhand region, wasted children remain within a very narrow range, an unexplained trend was observed among wasted children where mothers from poorest quintile are with high BMI as compared to richest quintile, d) mother education appears to have little effect on the wasting levels.</p><p class="abstract"><strong>Conclusions:</strong> Adequate regional health planning in child health and nutritional development could be a proper approach that reduces geographical differences as well as the socio-economic disparity in child health and malnutrition.</p>
Dissertations / Theses on the topic "Quintile class"
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Taylor, Frank Seaton. "Quintic Abelian Fields." Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/29662.
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Quintic abelian fields are characterized in terms of their
conductor and a certain Galois group.
From these, a generating polynomial and its roots and an
integral basis are computed.
A method for finding the fundamental units, regulators and
class numbers is then developed.
Tables listing the coefficients of a generating polynomial,
the regulator, the class number, and a coefficients of a
fundamental unit are given for 1527 quintic abelian fields.
Of the seven cases where the class group structure is not
immediate from the class number, six have their structure
computed.<br>Ph. D.
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Harrat, Ayoub. "Problème de moments avec applications et estimations du spectre discret des opérateurs définis par des matrices infinies non bornées THE QUINTIC COMPLEX MOMENT PROBLEM ASYMPTOTIC EXPANSION OF LARGE EIGENVALUES FOR A CLASS OF UNBOUNDED JACOBI MATRICES." Thesis, Littoral, 2020. http://www.theses.fr/2020DUNK0563.
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Dans cette thèse on donne d'abord une solution concrète pour presque tous les scénarios qu'on peut avoir dans le problème de moments complexe quintique et en particulier dans le cas d'une mesure à support minimal. On présente aussi de nombreux exemples pour illustrer chaque cas. La seconde partie présente une approche qui permet de passer du problème de moments tronqué au problème complet à l'aide des idempotents. Il s'agit d'une approche très différente de celle utilisée dans la première partie.Plus précisément, au lieu d'appliquer les méthodes de R. Curto et L. Fialkow où l'objet central est la matrice de moments, on utilise l'approche de F. Vasilescu dont l'objet central est la fonctionnelle de Riesz. Cette fonctionnelle fait associer à chaque monôme tᵅ la valeur γ∝ et elle satisfait trois conditions naturelles dans le cas où la suite (γ∝)∝∈ℕᵈ est donnée par les intégrales de tᵅ par rapport à une mesure. La troisième partie est consacrée à l'asymptotique du spectre pour une classe de matrices hermitiennes tridiagonales infinies. Le but est d'obtenir le comportement asymptotique précis des valeurs propres y associées à partir du comportement asymptotique de ces coefficients. Le résultat est obtenu par une approche nouvelle qui est une adaptation de la théorie de perturbations de Schrieffer-Wolff utilisée en physique de la matière condensée. Cette méthode marche également pour des matrices 'bande', mais le cas des matrices tridiagonales est le plus important pour des applications et encore les expressions explicites des premières corrections dans la formule asymptotique sont plus simples pour les matrices tridiagonales<br>In this thesis, we first provide a concrete solution to the, almost all, quintic TCMP (that is, when m = 5). We also study the cardinality of the minimal representing measure. Based on the bi-variate recurrence sequence properties with some Curto-Fialkow's results. Our method intended to be useful for all odd-degree moment problems. Second, we investigate the full moment problem for discrete measures using Vasilescu's idempotent approach based on Λ-multiplicative elements with respect to the associated square positive Riesz functional. We give a sufficient condition for the existence of a discrete integral representation for the associated Riesz functional, which turns to be necessary in bounded shift space case. A particular attention is given to Λ-multiplicative elements, where a total description, for the cases where they are a single point indicator functions, is given. Lastly, We investigate a class of infinite Jacobi matrices which define unbounded self-adjoint operators with discrete spectrum. Our purpose is to establish the asymptotic expansion of large eigenvalues and to compute two correction terms explicitly. This method works in general for band matrices but Jacobi matrices case still much interesting due to applications and explicit expressions obtained for the first correction terms in the asymptotic formula
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Fantoni, Matteo. "Difficoltà di trasposizione delle conoscenze matematiche in fisica: problemi ed esercizi con due classi quinte di liceo scientifico." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/22052/.
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L’obiettivo principale dello studio è indagare le difficoltà incontrate da studenti al quinto anno di Liceo nella risoluzione di particolari quesiti: coppie di problemi di matematica e fisica, costruiti per essere identici nelle conoscenze matematiche che la soluzione richiede.
I problemi sono stati formulati per capire se le criticità nelle loro soluzioni siano di tipo tecnico (cioè derivanti da lacune di tipo matematico) oppure legate alla modellizzazione del problema e alla difficoltà di trasporre le conoscenze matematiche in un contesto diverso da quelle in cui sono state introdotte (in questo caso, in un contesto fisico).
Lo studio si colloca nel tema più generale dell’interdisciplinarità tra fisica e matematica nella soluzione di problemi: tema su cui anche il Ministero dell’Istruzione da qualche anno sta ponendo particolare attenzione, modificando la seconda prova dell’Esame di Stato dei Licei Scientifici.
Dal punto di vista metodologico, lo studio riprende e sviluppa l’indagine di un gruppo belga (Ceuppens et al., 2019), replicata con studenti frequentanti il primo anno del corso di laurea in Scienze Biologiche di Bologna (Miani, 2019). Ci si è ispirati a questi studi per la formulazione dei problemi e per l’idea di confrontare le soluzioni degli studenti in problemi “isomorfi” di matematica e fisica.
Due questionari, composti rispettivamente da sei quesiti (tre coppie di problemi “isomorfi”), sono stati somministrate in due classi di quinta Liceo Scientifico e alcuni studenti sono stati poi intervistati singolarmente.
Dai risultati emerge una generale disparità nelle difficoltà riscontrate nelle due diverse tipologie di problemi: in particolare, sono risultati più ostici i quesiti di carattere fisico. Tale conclusione si trova in perfetto accordo con quanto riscontrato anche da Ceuppens e Miani nei loro lavori.
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David, Joanne Munro. "An evaluation of the effectiveness of a cognitive load based teaching method in a mixed ability grade 9 class, with special attention to learners' attitudes and engagement." Diss., 2015. http://hdl.handle.net/10500/21803.
Full textBooks on the topic "Quintile class"
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Papamichael, N. A class of cubic and quintic spline modified collocation methods for the solution of two-point boundary value problems. Brunel University, Department of Mathematics and Statistics, 1987.
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Paxman, Andrew. How to Get Rich in a Revolution. Oxford University Press, 2017. http://dx.doi.org/10.1093/acprof:oso/9780190455743.003.0004.
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While the Revolution gave Jenkins a few scares, including almost being shot by a firing squad, it allowed him to quintuple his fortune. When rebels loyal to Emiliano Zapata withdrew from Puebla, they briefly used Jenkins’s mill as a fort. Charged with complicity, Jenkins was hauled off by federal troops, but Álvaro Obregón intervened to save him. The incident heightened Jenkins’s disdain for the Revolution, and he dispatched Mary to California. But he kept his mills running and was one of the first textile barons to give his company joint-stock, limited-liability status. His chief wartime success was in property trading. He converted his dollars into the devalued peso and snapped up assets for a song. His success illustrates how a new entrepreneurial class used the era’s turmoil to their advantage. Helping make such purchases possible was Jenkins’s ability to ingratiate himself with certain Puebla elites and his willingness to bribe officials.
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Boemio, Alessandro. Matematichiamo Insieme: Argomenti Principali Di Matematica per le Classi Quarte e Quinte Della Scuola Primaria e per la Prima Media. Independently Published, 2021.
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Vocabolarietto Domestico in Quattro Lingue: Napoletana, Italiana, Francese e Latina, Compilato Dall'Abate Aniello Casilli. Aggiuntavi la Pronunzia Delle Parole Francesi e Di Quelle Latine, Specialmente per Quei Giovanetti Delle Quarte e Quinte Classi Elem. Creative Media Partners, LLC, 2023.
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Vocabolarietto Domestico in Quattro Lingue: Napoletana, Italiana, Francese e Latina, Compilato Dall'Abate Aniello Casilli. Aggiuntavi la Pronunzia Delle Parole Francesi e Di Quelle Latine, Specialmente per Quei Giovanetti Delle Quarte e Quinte Classi Elem. Creative Media Partners, LLC, 2023.
Find full textBook chapters on the topic "Quintile class"
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Abdullah Qadha, Sarah, Muneera Abdullah Qadha, and Haibo Chen. "Existence of limit cycles for a class of quintic Kukles homogeneous system." In Recent Research in Polynomials [Working Title]. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.1000859.
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We investigated the existence of limit cycles for quintic Kukles polynomial differential systems depending on a parameter in this chapter. These systems are important in practical applications and theoretical advances. We first used formal series method based on Poincaré’s ideas to prove this point and determine the centre-focus problem. We then utilised the Dulac function to prove the non-existence of closed orbits. We determined the sufficient condition for the existence of the limit cycles, which bifurcate from the equilibrium point, using Hopf bifurcation theory. Lastly, we provided some numerical examples for illustration using MATLAB to plot. Note that studies on the existence and the nonexistence of limit cycles and algebraic limit cycles for Kukles systems are limited.
Conference papers on the topic "Quintile class"
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Vats, Satvik, and Shiva Mehta. "Machine Intelligence at the Crease: A Quintuple-Class CNN-LSTM Model for Umpire Gesture Recognition." In 2024 15th International Conference on Computing Communication and Networking Technologies (ICCCNT). IEEE, 2024. http://dx.doi.org/10.1109/icccnt61001.2024.10724257.
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Suryavanshi, Ankita, Shiva Mehta, Preeti Chaudhary, Kireet Joshi, and Vishal Jain. "Sophisticated Weapon Detection Algorithms: A Quintuple Class Approach Using CNN-SVM." In 2024 5th International Conference for Emerging Technology (INCET). IEEE, 2024. http://dx.doi.org/10.1109/incet61516.2024.10593205.
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R Khlefh, Ahmed. "Quintic Spline Exponential Methods for Numerical Solutions of TwoPoint Boundary Value Problems in Mid Knots." In IX. International Scientific Congress of Pure, Applied and Technological Sciences. Rimar Academy, 2023. http://dx.doi.org/10.47832/minarcongress9-19.
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In this paper, we develop a class of accurate methods based on the Quintic spline exponential method at mid-nodes for numerical solutions of two-point boundary value problems of the fourth order. Using this exponential spline method, some consistency relations are derived for calculating approximate solutions to problems. Existing finite differentials of the second and fourth orders and spline functionbased methods developed in the mid-knots become special cases of this method. The convergence analysis of the proposed method is discussed. Three numerical examples illustrate the practical usefulness of our methodology
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Lu, Ao, Runfeng Li, Xu Yinggang, Zexin Nie, Peilin Li, and Guangyu Tian. "Torque Vectoring for Lane-Changing Control during Steering Failures in Autonomous Commercial Vehicles." In WCX SAE World Congress Experience. SAE International, 2024. http://dx.doi.org/10.4271/2024-01-2328.
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<div class="section abstract"><div class="htmlview paragraph">Lane changing is an essential action in commercial vehicles to prevent collisions. However, steering system malfunctions significantly escalate the risk of head-on collisions. With the advancement of intelligent chassis control technologies, some autonomous commercial vehicles are now equipped with a four-wheel independent braking system. This article develops a lane-changing control strategy during steering failures using torque vectoring through brake allocation. The boundaries of lane-changing capabilities under different speeds via brake allocation are also investigated, offering valuable insights for driving safety during emergency evasions when the steering system fails. Firstly, a dual-track vehicle dynamics model is established, considering the non-linearity of the tires. A quintic polynomial approach is employed for lane-changing trajectory planning. Secondly, a hierarchical controller is designed. The upper layer employs a three-stage cascaded proportional integral controller to determine the total yaw moment required for lane changing, considering the influence of lateral tire forces on brake allocation. The middle layer uses constraint optimization to manage braking force distribution among the four wheels. The lower layer's actuator generates brake torque through brake cylinder pressurization. Finally, the effectiveness and feasibility of the control strategy are validated using joint simulations on Matlab/Simulink and Trucksim over diverse longitudinal distances. Simulation results indicate that autonomous commercial vehicles can execute swift and safe lane changes at varying speeds during steering failures.</div></div>
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Liu, Longxi, Zihao Wang, Yunqing Zhang, and Jinglai Wu. "Trajectory Planning of Autonomous Vehicles Based on Parameterized Control Optimization for Three-Degree-of-Freedom Vehicle Dynamics Model." In WCX SAE World Congress Experience. SAE International, 2024. http://dx.doi.org/10.4271/2024-01-2332.
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<div class="section abstract"><div class="htmlview paragraph">In contemporary trajectory planning research, it is common to rely on point-mass model for trajectory planning. However, this often leads to the generation of trajectories that do not adhere to the vehicle dynamics, thereby increasing the complexity of trajectory tracking control. This paper proposes a local trajectory planning algorithm that combines sampling and sequential quadratic optimization, considering the vehicle dynamics model. Initially, the vehicle trajectory is characterized by utilizing vehicle dynamic control variables, including the front wheel angle and the longitudinal speed. Next, a cluster of sampling points for the anticipated point corresponding to the current vehicle position is obtained through a sampling algorithm based on the vehicle's current state. Then, the trajectory planning problem between these two points is modeled as a sequential quadratic optimization problem. By employing an offline method, the optimal trajectory set between the present position and the anticipated point cluster is computed. After acquiring clusters of candidate trajectories, each candidate trajectory is evaluated to determine its feasibility and cost, considering factors such as efficiency and comfort. The best trajectory is then chosen as the local trajectory of vehicle. The trajectories generated using the proposed method and the quintic polynomial method are both tracked and controlled using a 3-DOF vehicle dynamic model. The results clearly demonstrate that the trajectories generated by the proposed method exhibit superior tracking performance.</div></div>
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Yoon, Youngmin, and Kyongsu Yi. "Data-driven Trajectory Planning of Lane Change Maneuver for Autonomous Driving." In WCX SAE World Congress Experience. SAE International, 2023. http://dx.doi.org/10.4271/2023-01-0687.
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<div class="section abstract"><div class="htmlview paragraph">This paper presents a methodology of trajectory planning for the surrounding-aware lane change maneuver of autonomous vehicles based on a data-driven method. The lateral motion is planned by sampling candidate patterns which are defined based on quintic polynomial functions over time. Based on the cost evaluation among the sampled candidates, the optimal lateral motion pattern is selected as a reference and tracked by the controller. The longitudinal motion is planned and controlled using Model Predictive Control (MPC) which is an optimal control method designed considering the surrounding traffic information. To realize the lane change motion similar to the human driving behavior in the surrounding traffic situation, the human driving pattern is modeled in the form of motion parameters and considered in planning the lateral and longitudinal motion. The motion parameters related to the lane change motion are estimated based on the host vehicle states and surrounding vehicle states, and reflected in the optimization of the lateral and longitudinal motion. The estimator of the motion parameters is constructed using a multi-layer neural network which is designed as a regression function. The neural network is trained using real-world motion information related to the lane change maneuver. The proposed trajectory planning algorithm has been validated via simulation tests in which the dynamic traffic environment is reconstructed. The simulation results show that the proposed trajectory planning algorithm secures collision safety and ride quality in multi-vehicle traffic environment. Also, the motion characteristics induced by the proposed algorithm are shown to be consistent with human driving patterns.</div></div>
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Zhong, Liang, Changgang Lu, and Jian Wu. "Spatio-Temporal Trajectory Planning Using Search And Optimizing Method for Autonomous Driving." In WCX SAE World Congress Experience. SAE International, 2024. http://dx.doi.org/10.4271/2024-01-2563.
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<div class="section abstract"><div class="htmlview paragraph">In the field of autonomous driving trajectory planning, it’s virtual to ensure real-time planning while guaranteeing feasibility and robustness. Current widely adopted approaches include decoupling path planning and velocity planning based on optimization method, which can’t always yield optimal solutions, especially in complex dynamic scenarios. Furthermore, search-based and sampling-based solutions encounter limitations due to their low resolution and high computational costs. This paper presents a novel spatio-temporal trajectory planning approach that integrates both search-based planning and optimization-based planning method. This approach retains the advantages of search-based method, allowing for the identification of a global optimal solution through search. To address the challenge posed by the non-convex nature of the original solution space, we introduce a spatio-temporal semantic corridor structure, which constructs a convex feasible set for the problem. Trajectory optimization is then performed through numerical optimization methods, resulting in real-time and robust spatio-temporal trajectory planning. The proposed approach initiates by constructing a 3D spatio- temporal map that incorporates information such as dynamic obstacles. Improved A* algorithm is used to search for a preliminary spatio- temporal trajectory, serving as an initial approximation for the trajectory. Based on this initial approximation, a spatio-temporal corridor is constructed as locally convex feasible driving area, then a quintic monomial polynomial is employed to represent a trajectory, considering vehicle kinematics, continuity, and other constraints, this formulation transforms the problem into a general quadratic programming problem. Ultimately, the generated trajectories are rigorously tested through simulations in scenarios involving overtaking and side car cut-in. The results indicate that the generated trajectories are feasible, reasonable, and exhibit good real-time performance<b>.</b></div></div>
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Wang, Tianyi, Qiyuan Guo, Chong He, et al. "Impact of Connected and Automated Vehicles on Longitudinal and Lateral Performance of Heterogeneous Traffic Flow in Shared Autonomy on Two-Lane Highways." In WCX SAE World Congress Experience. SAE International, 2025. https://doi.org/10.4271/2025-01-8098.
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<div class="section abstract"><div class="htmlview paragraph">Intelligent transportation systems and connected and automated vehicles (CAVs) are advancing rapidly, though not yet fully widespread. Consequently, traditional human-driven vehicles (HDVs), CAVs, and human-driven connected and automated vehicles (HD-CAVs) will coexist on roads for the foreseeable future. Simultaneously, car-following behaviors in equilibrium and discretionary lane-changing behaviors make up the most common highway operations, which seriously affect traffic stability, efficiency and safety. Therefore, it’s necessary to analyze the impact of CAV technologies on both longitudinal and lateral performance of heterogeneous traffic flow. This paper extends longitudinal car-following models based on the intelligent driver model and lateral lane-changing models using the quintic polynomial curve to account for different vehicle types, considering human factors and cooperative adaptive cruise control. Then, this paper incorporates CAV penetration rates, shared autonomy rates, and string intensity into a Markov chain model to represent heterogeneous traffic flow. To verify the comprehensive performance of CAVs, this paper introduces both theoretical derivations and numerical simulations. A generalized linear string stability criterion and a fundamental diagram model are introduced to evaluate CAVs’ impact on longitudinal performance. Theoretical results indicate that large-scale deployment of CAVs improves string stability and traffic capacity. Besides, a discretionary lane-changing scenario on two-lane highways, based on the MOBIL model, is established to assess CAVs’ overall performance. Simulations demonstrate that increasing CAV penetration rates enhance traffic speed, efficiency, ride comfort and safety across different traffic densities. Appropriately reducing the proportion of HD-CAVs also benefits the overall performance. A parameter sensitivity analysis further reveals that higher driver compliance rates significantly improve traffic flow while higher weighted coefficients of communication gain achieve better safety by sacrificing other performance. These findings underscore the substantial impact of CAV technologies on mixed traffic flow in shared autonomy and lay foundation for developing control strategies tailored to heterogeneous traffic flow on two-lane highways.</div></div>
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Hasbestan, Jaber J., James C. Newman, and Abdollah Arabshahi. "Pleasingly Parallel Matrix Free Discontinuous Least-Squares Spectral Element Algorithm for Fluid Flow With Nonconformal Element Refinement." In ASME 2016 Fluids Engineering Division Summer Meeting collocated with the ASME 2016 Heat Transfer Summer Conference and the ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/fedsm2016-7510.
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Least squares spectral element methods formulate the partial differential equation (PDE) as an optimization problem. One of the advantages of this method is that the boundary conditions can be implemented by adding a penalty equation to the cost function and hence be imposed in a weak sense with little effort. In this study a discontinuous methodology is utilized; that is, each element has its own set of degrees-of-freedom. This formulation possesses a greater sparsity pattern in the Jacobian matrix, and has a smaller bandwidth when compare to the continuous counterpart. However, these attributes come at the expense of an increased number of degrees-of-freedom on a given discretization. In the current work, the conventional discontinuous approach is modified to convert the equations to a matrix free system where there is no need for assembling the global system. The continuity in the formulation between two neighboring elements is imposed in a weak sense with a penalty equation added to the original PDE in each element. This penalty term minimizes the integral of the square root of the difference between the unknown state-vectors on each edge for neighboring elements. The conventional discontinuous approach evaluates this integral at the current time iterate. Using the aforementioned approach, assembly of the system is required and is not matrix free. It is shown in this study that by modifying this equation it is possible to obtain a matrix free system. Additionally each element becomes independent from other elements, and the direct solution for each element possible. The system matrix obtained by this least squares method is symmetric positive definite and can be effectively solved by Cholesky decomposition. This solution procedure is well suited for parallelization using Pthreads and CUDA. This is due to the fact that there is now no need for any communication, and each element only reads the data from the neighboring elements, while solving for its own unknowns. Another advantage of the matrix free approach is that adaptation is easily implemented by only introducing the new state-vectors into the data structures and updating the neighbor connectivity. The value of the cost function in the formulation may be used to select the elements to be refined. Each tagged element is then divided by h-refinement. This results in a nonconformal mesh. Utilization of a nonconformal mesh alleviates the need for increasing the resolution in unnecessary locations. To require conformality of the mesh, the extent of refinement and the number of degrees-of-freedom are increased. In the current work, quintic quadrilateral elements are used in the simulations, and a C++ vector class is used for updating mesh refinement data structures.
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Nascimento, Suely. "A Casa de Marlene." In LINK 2021. Tuwhera Open Access, 2021. http://dx.doi.org/10.24135/link2021.v2i1.106.g157.
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Este artigo apresenta a pesquisa “A Casa de Marlene”, que venho desenvolvendo no meu doutorado em Artes, Programa de Pós-Graduação em Artes, Instituto de Ciências da Arte, Universidade Federal do Pará, desde 2018. Uma extensão da pesquisa que produzi no mestrado em Artes, na mesma instituição de ensino superior, de 2016 a 2018. É uma poética construída a partir da memória familiar e afetiva, em que fotografia, vídeo, som, escrita, olfato, paladar, tato e sentimento se fundem — e integra a linha de pesquisa 1, da poética e dos processos de atuação nas artes, na linguagem artística das artes visuais. O objetivo geral é desenvolver um projeto poético e montagem de instalações com fotografia-vídeo-som-escrita, discos da casa da minha mãe. Bem como pensar-refletir sobre o meu próprio caminho e construir o memorial em que conto sobre o processo criativo da obra. Ao longo da minha carreira, como artista-pesquisadora, conversei com artistas como Claude Monet, Leonardo da Vinci e Hélio Oiticica; e com teóricos como Jean Lancri e Pedro Vasquez, na metodologia; Allan Sekula, em fotografia; Rosalind Krauss, na instalação; Renato Cohen, em performance; Philip Auslander, na documentação de performance; Sérgio Basbaum, na sinestesia; Allan Kaprow, na arte e na vida; Glória Ferreira e Cecília Cotrim, na escrita da artista; e Sonia Rangel, no processo criativo. Como metodologia pessoal, crio um jardim mesclado com as minhas memórias do jardim da casa onde morei, onde desenvolvo a instalação e o memorial. É neste lugar que experimento, leio, pesquiso, edito a fotografia-vídeo-som-escrita, reflito sobre a minha trajetória de vida e o que nela me toca, e escrevo os textos de pesquisa. Durante as aulas, nos estudos prático-reflexivos, fui construindo minha poética, experimentando instalações na própria sala de aula. Um deles, relacionado à cozinha da casa onde morava, experimentei dois assuntos, inclusive a experiência do café com colegas de classe. Cada camada da instalação é percebida no processo criativo da obra de arte. E, a partir do que percebo na minha poética, desenvolvo conversas com a História da Arte, e tenho concebido textos, que chamei de escritos do artista. Com as letras, palavras, frases e reflexões, escrevo o que pensei/penso sobre a geometria, as dimensões, o espaço, o quarto da casa e a partilha à volta de uma mesa de jantar. As camadas poéticas construídas no caminho criativo são inúmeras e, no fragmento da instalação, apresento vestígios que estão em mim, no jardim, no quarto, na cozinha e no quintal, onde vivi uma vida na casa da minha mãe.