Thèses : « Hidden group »

1

LIMONGELLI, PAOLA ENRICA. « The hidden children. Una ricerca partecipativa relativa al fenomeno dei young caregivers italiani ». Doctoral thesis, Università degli Studi di Milano-Bicocca, 2020. http://hdl.handle.net/10281/277261.

Texte intégral

Résumé :

La presente ricerca indaga il fenomeno dei giovani “caregivers” nel contesto italiano. I young caregivers (yc) sono bambini/e e adolescenti che svolgono attività di cura. Questa condizione si verifica tipicamente quando un membro della famiglia soffre di malattie croniche o disabilità, e il giovane deve far fronte a queste difficoltà in prima persona. I motivi per cui i yc non hanno alternative a questa condizione possono essere molteplici, come le scarse risorse finanziarie e gli aiuti insufficienti da parte dei servizi sociali e sanitari. Anche se il fenomeno è stato studiato in diverse nazioni, non è stato ancora approfondito in Italia. Ci sono due possibili spiegazioni per questo “ritardo” nella ricerca: il sistema di welfare italiano e il concetto dell’infanzia nel nostro contesto. In Italia il welfare è di tipo familistico, ovvero lo Stato svolge un ruolo residuale nel fornire risorse e servizi a supporto dei cittadini. Inoltre, le famiglie sono abituate a provvedere ai propri bisogni autonomamente. Tuttavia viene spontaneo pensare che questo lavoro di cura è normalmente associato a persone adulte (specie donne), ma non a minorenni. Come suggerisce la nuova sociologia dell’infanzia infatti i minori sono considerati senza autonomia, dipendendo dagli adulti. A fronte di assente riconoscimento sociale e giuridico delle responsabilità di cura svolte da bambini e adolescenti, i young caregivers vengono definiti come un gruppo nascosto, pertanto sono anche difficili da individuare. Per superare questo ostacolo, è stata condotta una ricerca con approccio partecipativo. L’obiettivo infatti è stato quello di coinvolgere le persone tradizionalmente considerate come oggetto di ricerca, facendole diventare protagoniste della stessa, assumendo il ruolo di co-ricercatori. Questa inversione di prospettiva è possibile solo riconoscendo in loro un “sapere esperienziale” derivante dalla vicinanza all’oggetto di studio. I co-ricercatori collaborano con un ricercatore in un "Steering group", il quale svolge la progettazione della ricerca e analizza i dati. All'interno dello " Steering group ", i co-ricercatori sviluppano consapevolezza, rielaborano la loro identità e maturano il loro bisogno di cambiamento sociale. L’analisi della ricerca è stata condotta attraverso un mixed method, con tre livelli di analisi. In primo luogo, un'analisi secondaria sui dati dell'Istat (sondaggio multiuso su "Aspetti della vita" - 2015) è stata utile per comprendere le caratteristiche di bambini e adolescenti e confrontare le differenze tra famiglie straniere e italiane e tra nord e sud Italia. In secondo luogo, la surevy nelle scuole medie di Milano è stata utile per comprendere specifici al caregiving. Infine, è stato realizzato un focus group con potenziali yc, allo scopo di comprendere il loro livello di consapevolezza e i loro bisogni. I yc italiani hanno le stesse caratteristiche degli altri giovani caregiver in tutto il mondo. Il fenomeno è nascosto e non riconosciuto. Di conseguenza, i yc e le loro famiglie mancano di riconoscimento e supporto sociale. La ricerca mette in luce le attività svolte in famiglia, dal lavoro domestico al supporto emotivo. Le conseguenze sui yc riguardano la scuola, le relazioni con i pari e il benessere.
This paper introduces research on young carers in an Italian context. This topic describes the issue of caregiving performed by children. The activities of care begin when one family member has a chronic illness or disability and there are no alternatives for coping with these difficulties. There are many factors associated with the issue of absence of alternatives, such as: few financial resources, a weak informal support network (relatives, friends and neighbors) and insufficient aid from social and health services. Even if the phenomenon has been studied in different countries, it has not been widely investigated in Italy. There are two possible explanations for this lack of research: the Italian welfare system and the concept of childhood. In Italy welfare is familistic. It means that the State has only a residual role in providing resources or services to support citizens. Furthermore, families are mandated to provide care by themselves. One would argue that the work of care is usually associated with adult figures, in particular women, but not with minors. As the new sociology of childhood suggests, this happens because minors are considered without autonomy and their own agency and dependent on adults. . Since they are identified as a hidden group, it makes them hard to reach. In order to overcome this obstacle, a participatory approach has been used in a research on Italian young carers. Its aim was to engage people who are traditionally considered objects of research to enhance the knowledge about this topic. This way the objects of research become actors and acquire the role of co-researchers. This inversion of prospective is possible only by recognizing co-researchers being “experts by experience”, since their “experiential knowledge” comes from experiencing everyday life problems. The co-researchers work together with a researcher in a “Steering group”, which carry out the design of research and analyse the data. Inside a “Steering group”, the co-researchers develop awareness, rework their identity and mature their need for social change. The issue of this research project was analysed with a mixed-method research with three levels of analysis. Firstly, a secondary analysis on Istat data (multipurpose survey on “Aspects of life”- 2015) was useful to understand the characteristics of children and teenagers and to compare foreign verses Italian families and the differences between northern and southern Italy. Secondly, a survey in middle schools in Milan, was helpful to understand the outcomes connected to the child’s role. Lastly, focus groups were organised with young carers, in which the aim was to understand their needs, awareness and the perceptions of young caregivers. Italian young carers have the same characteristics as other young carers world-wide. The phenomenon is hidden and unrecognized. Consequently, young carers and their families lack recognition and welfare provision. The analysis shows the activities that young carers provide in their family: instrumental and care-related. The outcomes are connected to school, peer relations and personal wellness and sometimes to mental health problems.

Styles APA, Harvard, Vancouver, ISO, etc.

2

Bochkareva, Ekaterina. « Low EV/EBITDA multiple : inefficient market or a hidden potential for Fortuna Entertainment Group ? » Master's thesis, Vysoká škola ekonomická v Praze, 2016. http://www.nusl.cz/ntk/nusl-264394.

Texte intégral

Résumé :

This thesis was initiated by Penta Investment as a reaction on the significant difference in EV EBITDA multiple of Fortuna and its peers, European listed betting and gaming companies. It seeks to find the reason for more than twice higher multiple and a possibility to increase it by applying best international practices in case there is a feasible way to do it for Fortuna. Three hypotheses address the possible reasons for the difference, peers incomparability, market inefficiency and opportunity for Fortuna to increase the multiple by bringing the most influential KPIs the average level of its peers. The analysis is done with a help of comparative analysis, benchmarking, regression analysis and interviews of equity analysts. As a result, action plan for increasing EV EBITDA multiple for Fortuna is developed.

Styles APA, Harvard, Vancouver, ISO, etc.

3

ALMEIDA, DANILO DOS SANTOS. « THE HIDDEN REASONS OF THE BRAZILIAN SUPREME COURT : A STUDY ON GROUP AGENCY AT THE COURT ». PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2016. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=27851@1.

Texte intégral

Résumé :

PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO
COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
PROGRAMA DE SUPORTE À PÓS-GRADUAÇÃO DE INSTS. DE ENSINO
É comum tratarmos grupos como agentes capazes de interagir intencionalmente com o mundo e, para identificar mentes de grupos, usamos os mesmos mecanismos de percepção de mente em outras pessoas. No caso de cortes, a expressão de seus julgamentos coletivos pode variar de acordo com o grau de liberdade que elas permitem a seus membros. Elas podem publicar uma decisão única, restringindo a publicidade do processo deliberativo (per curiam) ou, ao invés de uma opinião coletiva da corte, podem publicar o conjunto de votos individuais de seus membros (seriatim). Nesse último caso, a identificação dos posicionamentos coletivos da corte pode ser difícil. Esta tese sustenta que, por conta de suas decisões seriatim, o Supremo Tribunal Federal (STF) diminui sua entitatividade, o que torna suas razões para decidir difíceis de serem identificadas e limita sua capacidade de uniformizar a jurisprudência nacional através de seus precedentes. No primeiro capítulo, este trabalho trata das condições teóricas para a possibilidade de atitudes intencionais de grupos. Há duas possíveis maneiras de se especificar a natureza da intencionalidade de grupo: uma que se baseia na disposição dos membros do grupo de adotarem a perspectiva coletiva e outra que aponta para a capacidade dos membros de agirem racionalmente enquanto grupo. Da perspectiva de um observador, a noção de mente de grupo exige outras condições. O segundo capítulo especifica as formas como a discussão sobre intencionalidade de grupo podem ser aplicadas à prática judicial. Dependendo da forma como a corte apresenta suas decisões, pode ser que as suas razões motivadoras não sejam claramente distinguíveis das razões endossadas apenas pelos membros individualmente. No terceiro capítulo, é indicado como isso interessa a cortes como o STF, que lidam com questões politicamente controversas, mas que precisam demonstrar capacidade de agir motivadas por razões para que seus precedentes sejam respeitados. Ao optar por publicar decisões seriatim, a corte indica abertura à diversidade de opiniões, reduzindo a sua aparência de entidade coesa. Como consequência, as razões coletivamente aceitas para decidir não são claramente apresentadas. O último capítulo lida com pesquisas psicológicas recentes, que indicam que uma condição para a atribuição de intencionalidade a um grupo é que ele tenha alta entitatividade. Ações coordenadas e objetivos em comum entre os membros aumentam a entitatividade de um grupo e o torna mais propenso a ser reconhecido como um agente.
It is common that we treat groups as agents capable of interacting intentionally with the world. To identify group minds, we use the same mechanisms we use in the perception of the minds of other individuals. In the case of judicial courts, the expression of their collective judgments may vary in accordance with the degree of freedom they allow their members. The courts may publish a single decision, maintaining their deliberative process secret (per curiam) or, instead of an opinion of the court, may publish the set of its members individual opinions (seriatim). In the latter case, identifying the court s collective judgment can be challenging. This dissertation argues that, due to its seriatim decisions, the Brazilian Supreme Court (STF) diminishes its entitativity, making the reasons behind its decisions harder to identify and hindering its ability to standardize national judicial decision-making through its precedents. The first chapter deals with the theoretical conditions for the possibility of group intentional states. There are two possible ways to specify the nature of this kind of intentionality: one that is based on the group members willingness to adopt the collective perspective (the collective acceptance model), and one that points to the members ability to act rationally as a group (the social choice approach). From an observer s perspective, the notion of a group mind demands other conditions. The second chapter specifies the ways in which the discussion of group intentionality could be applied to judicial practice. Depending on the ways in which the court presents its decisions, it could be that its motivating reasons are not clearly distinguishable from the reasons endorsed individually by its group members. The third chapter establishes how this is relevant for courts like the STF, which deal with politically controversial issues, but which need, also, to demonstrate the ability to act motivated by reasons for its precedents to be respected. By choosing to publish seriatim decisions, the court privileges openness to a diversity of positions over its entitativity. As a consequence, the collectively accepted reasons are not clearly stated. The last chapter deals with recent psychological research that suggest that one condition for group intentionality inference is that the group possess high entitativity. Coordinated actions and common goals among members increase the group s entitativity and make it more likely to be seen as an agent.

Styles APA, Harvard, Vancouver, ISO, etc.

4

Colledan, Andrea. « On the Hidden Subgroup Problem as a Pivot in Quantum Complexity Theory ». Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/16112/.

Texte intégral

Résumé :

Quantum computing has opened the way to new algorithms that can efficiently solve problems that have always been deemed intractable. However, since quantum algorithms are hard to design, the necessity to find a generalization of these problems arises. Such necessity is satisfied by the hidden subgroup problem (HSP), an abstract problem of group theory which successfully generalizes a large number of intractable problems. The HSP plays a significant role in quantum complexity theory, as efficient algorithms that solve it can be employed to efficiently solve other valuable problems, such as integer factorization, discrete logarithms, graph isomorphism and many others. In this thesis we give a computational definition of the HSP. We then prove the reducibility of some of the aforementioned problems to the HSP. Lastly, we introduce some essential notions of quantum computing and we present two quantum algorithms that efficiently solve the HSP on Abelian groups.

Styles APA, Harvard, Vancouver, ISO, etc.

5

Lightle, John P. « Three Essays on Information Transmission and Pooling in Common Value Decision Making ». The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1211560798.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

6

Lane, Forrest C. « The Use Of Effect Size Estimates To Evaluate Covariate Selection, Group Separation, And Sensitivity To Hidden Bias In Propensity Score Matching ». Thesis, University of North Texas, 2011. https://digital.library.unt.edu/ark:/67531/metadc103349/.

Texte intégral

Résumé :

Covariate quality has been primarily theory driven in propensity score matching with a general adversity to the interpretation of group prediction. However, effect sizes are well supported in the literature and may help to inform the method. Specifically, I index can be used as a measure of effect size in logistic regression to evaluate group prediction. As such, simulation was used to create 35 conditions of I, initial bias and sample size to examine statistical differences in (a) post-matching bias reduction and (b) treatment effect sensitivity. The results of this study suggest these conditions do not explain statistical differences in percent bias reduction of treatment likelihood after matching. However, I and sample size do explain statistical differences in treatment effect sensitivity. Treatment effect sensitivity was lower when sample sizes and I increased. However, this relationship was mitigated within smaller sample sizes as I increased above I = .50.

Styles APA, Harvard, Vancouver, ISO, etc.

7

Clarke, Joanna. « Working collaboratively with young carers on an awareness-raising programme : a study of the value, benefits and impact on this 'hidden' group ». Thesis, University of Sheffield, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.632415.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

8

Lindman, Hornlund Josef. « Sigma-models and Lie group symmetries in theories of gravity ». Doctoral thesis, Universite Libre de Bruxelles, 2011. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209911.

Texte intégral

Résumé :

En utilisant des modèles sigma non-linéaires de fonctions d'un espace-temps D-dimensionnel à un espace symétrique G/H, nous discutons de solutions de type trou noir et membrane noire dans diverses théories de gravité supersymétriques. Un espace symétrique est une variété, riemannienne ou pseudo-riemannienne, pour laquelle le tenseur de Riemann est covariantement constant. L'utilisation du dictionnaire Kac-Moody/supergravité et les techniques de réduction dimensionnelles nous permettent de décrire des trous noirs de cohomogénéité un comme des géodésiques sur G/H. Un espace-temps M, potentiellement agrémenté d'un trou noir, est de cohomogénéité un s'il existe un groupe d'isométries Iso qui agit sur M et dont le quotient M/Iso est uni-dimensionnel. L'utilisation d'algèbres de Kac-Moody dans les théories de gravité a été développé dans l'espoir de décourvrir la symétrie sous-jacente de la théorie des cordes, aussi appelée théorie M. Les techniques de réduction dimensionnelle ont depuis longtemps été utilisées pour dévoiler les symétries cachées des théories de gravité. Dans la description du modèle sigma, les trous noirs extrémaux ou branes noires sont des géodésiques nulles et correspondent à un élément nilpotent de l'algèbre de Lie g de G. Un élément X nilpotent est caractérisé par la propriété X^n = 0. En utilisant le formalisme mathématique decrivant les orbites nilpotentes, nous classifions tous les trous noirs extrémaux dans la supergravité N=2 minimale à quatre dimensions, N=2 S^3 supergravité en quatre dimensions et la supergravité minimale en cinq dimensions. De la même manière, quand G est un sous-groupe d'un groupe Kac-Moody, très-étendu ou sur-étendu, on envoie l'orbite nilpotente minimale, en utilisant le plus haut poids de g, sur des solutions supersymétriques et non-supersymétriques de type brane dans les théories de supergravité à dix et onze dimensions. Nos résultats montrent que les symétries du groupe de Lie sont très utiles de ces solutions pour classer et trouver de nouvelles solutions de type trou noir. Afin de prouver l'unicité et plusieurs autres résultats formels, nous avons développé des méthodes préliminaires dans l'espoir qu'elles puissent être utilisées à l'avenir pour l'étude des trous noirs.
Doctorat en Sciences
info:eu-repo/semantics/nonPublished

Styles APA, Harvard, Vancouver, ISO, etc.

9

Farias, Carlene Paula Silva de. « Competing orders in Uru2Si2 : from ordered magnetism to spin liquid phases ». PROGRAMA DE P?S-GRADUA??O EM F?SICA, 2017. https://repositorio.ufrn.br/jspui/handle/123456789/23653.

Texte intégral

Résumé :

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-07-17T13:08:15Z No. of bitstreams: 1 CarlenePaulaSilvaDeFarias_TESE.pdf: 2687014 bytes, checksum: a677490ff19b9514e32959228d355d32 (MD5)
Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-07-18T14:15:39Z (GMT) No. of bitstreams: 1 CarlenePaulaSilvaDeFarias_TESE.pdf: 2687014 bytes, checksum: a677490ff19b9514e32959228d355d32 (MD5)
Made available in DSpace on 2017-07-18T14:15:39Z (GMT). No. of bitstreams: 1 CarlenePaulaSilvaDeFarias_TESE.pdf: 2687014 bytes, checksum: a677490ff19b9514e32959228d355d32 (MD5) Previous issue date: 2017-04-10
The main objective of this thesis is to investigate the competing ordered phases in the metallic heavy fermion compound URu2Si2, which displays a bodycentered tetragonal lattice. We first provide a study case of the competition between antiferromagnetic (AF) and spin liquid phases. The antiferromagnetic state is study with spin-wave theory. Whereas the spin liquid analysis has been carried out in an algebraic spin liquid representation. In the second part, we describe an effective theory for Raman scattering experiments at these particular phases. We provide insight about the hidden order phase displayed by the heavy fermion compound URu2Si2.
L?objectif central de cette th?se est d??tudier des phases ordonn?es en comp?tition dans des mat?riaux magn?tiques pr?sentant une structure cristalline t?tragonale centr?e. Ce travail est divis? en deux parties principales. Dans la premi?re, nous pr?sentons les r?sultats de notre ?tude de la comp?tition entre des ?tats ordonn?s antiferromagn?tiques et des phases liquides de spin. Nous montrons comment ces derni?res peuvent ?tre stabilis?es par la frustration g?om?trique et par une g?n?ralisation de la sym?trie de spin au groupe SU(n). Les ?tats antiferromagn?tiques sont d?crits par une th?orie d?onde de spin et l?analyse de liquide de spin est effectu?e par une repr?sentation fermionique des op?rateurs de spin. Dans la deuxi?me partie, nous d?crivons une th?orie effective pour d?rcrire des exp?riences de diffusion Raman. Nous fournissons un aper?u de la phase d?ordre cach? affich?e par le compos? de fermions lourds URu2Si2.

Styles APA, Harvard, Vancouver, ISO, etc.

10

Hansson, Jenny. « Ställ upp på led ! : En vetenskaplig essä om individens subjektifieringsprocess i fritidshemmets gruppbaserade struktur ». Thesis, Södertörns högskola, Lärarutbildningen, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-35345.

Texte intégral

Résumé :

This scientific essay is based on a self experienced situation from my work in after-school activities. Suddenly I find myself in a situation that is not thought through were the only goal is to transfer the students in the school area. I am asking them to stand in line to go to the lunch cafeteria. An obstacle occurs when the students fail or refuses to stand in line, which demands me to reflect over what just has happened. Through this I am stimulated to increase my understanding of the situation. The purpose of this essay is to investigate effects in the initially unreflected structure which is being used in afterschool activities. The standing in line is here used as a representation of that group-based structure. My three main focus areas for this research is learning, power and the tension between individuals and a group. To illustrate the effects in afterschool group-based structure I have chosen a hermeneutic writing. Foucault enriches my knowledge on the complexity of power perspectives that is being revealed in the situation. Through Asap Bartholdsson I am introduced to the concept of ”friendly power” (my translation). With the support of Gert Biestas ́s theories about ”qualification, socialization and subjectification”. I investigate the learning which is not immediately visible. Broadys view on the hidden curriculum shows me a new perspective on the structure and education in after-school activities as normative learning. By the analysis of the tension between individuals and the group I have made visible that the seeing made by the teacher has a big role to play. Also it has become clear that the students individuality and integrity sometimes has to take a step back in favour of the group and vice versa. But if this interaction is balanced it has an enriching effect on both perspectives.
Denna vetenskapliga essä har sin utgångspunkt i en egenupplevd situation från mitt arbete i fritidshemmet. Jag finner mig plötsligt i en situation som ger sig till känna som dittills oreflekterad med enda mål att förflytta eleverna. De blir tillbedda att ställa upp på led för att gå till mellanmålet i matsalen. Svårigheten uppstår när eleverna utmanar strukturen och min styrning vilket väcker stort intresse för att analysera händelsen vidare. Syftet med denna essä är att undersöka effekter av den gruppbaserade strukturen i fritidshemmet som ledbildandet här får stå som representant för. Jag fokuserar främst på tre områden som behandlar lärande, makt och spänningsfältet mellan individ och grupp. För att synliggöra effekter i fritidshemmets gruppbaserade struktur har jag valt ett hermeneutiskt essäskrivande. Jag tar hjälp av Foucaults maktperspektiv för att tolka pluraliteten av maktrelationer som uppenbarar sig. Med hjälp av Åsa Bartholdsson närmar jag mig begreppet vänlig maktutövning och med understöd av Biestas begrepp kvalificering, socialisation och subjektifiering utforskar jag det underliggande lärandet. Broadys syn på den dolda läroplanen synliggör de normerande kunskaper som eleverna förvärvar i ledbildandet. Vid analys av individ kontra grupp har det gjort sig tydligt att pedagogens seende har stor roll. Det har också visat sig att elevens subjekt- och integritetsskapande ibland får stå tillbaka för gruppen och vice versa. Dock är det viktigt för båda perspektiv att de får lika stor del utrymme och genom detta sker en berikande sammanflätning.

Styles APA, Harvard, Vancouver, ISO, etc.

11

Mettler, Gretchen G. « Growing into a Midwife : A Theory of Graduate Nurse-Midwife Students' Process of Clinical Learning ». Kent State University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=kent1271258271.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

12

Silva, de Farias Carlene Paula. « Competing Orders in URu2Si2 : from ordered magnetism to spin liquid phases ». Thesis, Bordeaux, 2017. http://www.theses.fr/2017BORD0569/document.

Texte intégral

Résumé :

L’objectif central de cette thèse est d’étudier des phases ordonnées en compétition dans des matériaux magnétiques présentant une structure cristalline tétragonale centrée.Ce travail est divisé en deux parties principales. Dans la première, nous présentons les résultats de notre étude de la compétition entre des états ordonnés antiferromagnétiques et des phases liquides de spin. Nous montrons comment ces dernières peuvent être stabilisées par la frustration géométrique et par une généralisation de la symétrie de spinau groupe SU(n). Les états antiferromagnétiques sont décrits par une théorie d’onde despin et l’analyse de liquide de spin est effectuée par une représentation fermionique des opérateurs de spin. Dans la deuxième partie, nous décrivons une théorie effective pour dércrire des expériences de diffusion Raman. Nous fournissons un aperçu de la phase d’ordre caché affichée par le composé de fermions lourds URu2Si2
The main objective of this thesis is to investigate the competing ordered phases in the metallic heavy fermion compound URu2Si2, which displays a body-centered tetragonallattice. We first provide a study case of the competition between antiferromagnetic(AF) and spin liquid phases. The antiferromagnetic state is study with spin-wave theory. Whereas the spin liquid analysis has been carried out in an algebraic spin liquid representation.In the second part, we describe an effective theory for Raman scattering experiments at these particular phases. We provide insight about the hidden order phase displayed by the heavy fermion compound URu2Si2

Styles APA, Harvard, Vancouver, ISO, etc.

13

Yang, Yimin. « Exploring Hidden Coherent Feature Groups and Temporal Semantics for Multimedia Big Data Analysis ». FIU Digital Commons, 2015. http://digitalcommons.fiu.edu/etd/2254.

Texte intégral

Résumé :

Thanks to the advanced technologies and social networks that allow the data to be widely shared among the Internet, there is an explosion of pervasive multimedia data, generating high demands of multimedia services and applications in various areas for people to easily access and manage multimedia data. Towards such demands, multimedia big data analysis has become an emerging hot topic in both industry and academia, which ranges from basic infrastructure, management, search, and mining to security, privacy, and applications. Within the scope of this dissertation, a multimedia big data analysis framework is proposed for semantic information management and retrieval with a focus on rare event detection in videos. The proposed framework is able to explore hidden semantic feature groups in multimedia data and incorporate temporal semantics, especially for video event detection. First, a hierarchical semantic data representation is presented to alleviate the semantic gap issue, and the Hidden Coherent Feature Group (HCFG) analysis method is proposed to capture the correlation between features and separate the original feature set into semantic groups, seamlessly integrating multimedia data in multiple modalities. Next, an Importance Factor based Temporal Multiple Correspondence Analysis (i.e., IF-TMCA) approach is presented for effective event detection. Specifically, the HCFG algorithm is integrated with the Hierarchical Information Gain Analysis (HIGA) method to generate the Importance Factor (IF) for producing the initial detection results. Then, the TMCA algorithm is proposed to efficiently incorporate temporal semantics for re-ranking and improving the final performance. At last, a sampling-based ensemble learning mechanism is applied to further accommodate the imbalanced datasets. In addition to the multimedia semantic representation and class imbalance problems, lack of organization is another critical issue for multimedia big data analysis. In this framework, an affinity propagation-based summarization method is also proposed to transform the unorganized data into a better structure with clean and well-organized information. The whole framework has been thoroughly evaluated across multiple domains, such as soccer goal event detection and disaster information management.

Styles APA, Harvard, Vancouver, ISO, etc.

14

Murphy, Jean-Noel. « Analysing the quantum fourier transform for finite groups through the hidden subgroup problem ». Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=33814.

Texte intégral

Résumé :

We present an in-depth study of the Quantum Fourier Transform for finite groups and the underlying mathematics. The study includes a look at the most salient results linking the Quantum Fourier Transform to the Hidden Subgroup Problem. This provides a useful context for determining the extent to which the Fourier transform can serve to recognize periodicity of a function on a finite group.

Styles APA, Harvard, Vancouver, ISO, etc.

15

Gonçalves, Demerson Nunes. « Algoritmos Quânticos para Problemas em Teoria de Grupo Computacional ». Laboratório Nacional de Computação Científica, 2009. http://www.lncc.br/tdmc/tde_busca/arquivo.php?codArquivo=194.

Texte intégral

Résumé :

Neste trabalho apresentamos um novo algoritmo quântico eficiente para o Problema do Subgrupo Oculto (PSO) sobre uma classe especial de grupos metacíclicos, Z_p times Z_q^s, com q | (p-1) e p/q= poli(log p), onde p, q são números primos ímpares distintos e s um inteiro positivo qualquer. Em um contexto mais geral, sem impor uma relação entre p e q obtemos um algoritmo quântico com complexidade de tempo 2^{O(sqrt{log p})}. Em qualquer caso, esses resultados são melhores que qualquer algoritmo clássico para o mesmo fim, cuja complexidade é Omega(sqrt{p}). Apresentamos também, algoritmos quânticos para o PSO sobre grupos não abelianos de ordem 2^{n+1} que possuem subgrupos cíclicos de índice 2 e para certos produtos semidiretos de grupos Z_N^m times Z_p, com m, N inteiros positivos e N fatorado de forma especial.
We present a new polynomial-time quantum algorithm that solves the hidden subgroup problem (HSP) for a special class of metacyclic groups, namely Z_{p} times _{q^s}, with q mid (p-1) and p/q= up{poly}(log p), where p, q are any odd prime numbers and s is any positive integer. This solution generalizes previous algorithms presented in the literature. In a more general setting, without imposing a relation between p and q, we obtain a quantum algorithm with time and query complexity 2^{O(sqrt{log p})}. In any case, those results improve the classical algorithm, which needs {Omega}(sqrt{p}) queries. We also present quantum algorithms for the HSP over non-abelian groups of order 2^{n+1} which have a cyclic subgroup of index 2 and for some semidirect product _N^m times _p, where N has a special prime factorization.

Styles APA, Harvard, Vancouver, ISO, etc.

16

Cosme, Carlos Magno Martins. « Quantum Algorithm for the Non Abelian Hidden Subgroup Problem ». Laboratório Nacional de Computação Científica, 2008. http://www.lncc.br/tdmc/tde_busca/arquivo.php?codArquivo=149.

Texte intégral

Résumé :

We present an efficient quantum algorithm for the Hidden Subgroup Problem (HSP) on the semidirect product of the cyclic groups and , where is any odd prime number, and are positives integers and the homomorphism which defines the group is given by the root such that . As a consequence we can solve efficiently de HSP on the semidirect product of the groups by , where has a special prime factorization.
Neste trabalho apresentamos um algoritmo quântico eficiente para o Problema do Subgrupos Oculto (PSO) no produto semidireto dos grupos cíclicos e , onde é qualquer número primo ímpar, e são inteiros positivos e o homomorfismo que define o grupo é dado por uma raiz para a qual . Como conseqüência, podemos resolver eficientemente o PSO também no produto semidireto dos grupos por , onde o inteiro possui uma especial fatoração prima.

Styles APA, Harvard, Vancouver, ISO, etc.

17

Heuser, Aden Elizabeth. « An Examination of the Use of Synchronous Computer-Mediated Communication Technology in Work Teams ». The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1258424936.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

18

Akers, Jessica S. « An Evaluation of Group Activity Schedules to Train Children with Autism to Play Hide-and-Seek with their Typically Developing Peers ». DigitalCommons@USU, 2015. https://digitalcommons.usu.edu/etd/4581.

Texte intégral

Résumé :

Children with autism spectrum disorders often have deficits in the area of social skills. Because of this deficit many children with autism avoid engaging in play activities with typically developing peers. The purpose of this study was to identify the utility of a photographic activity schedule, with embedded scripts, to teach three children with autism to play a complex social game with typically developing peers. In this study we used activity schedules to train children with autism to play hide-and-seek in a group with typically developing peers. All participants were prompted using physical guidance to follow the activity schedules to play hide-and-seek. Two activity schedules were present during teaching sessions, one was the seeker schedule and the other was the hider schedule. Each group member played the role of the seeker once and then the game ended. All of the participants were able to follow the activity schedules to play hide-andseek. We then systematically faded the activity schedules to the least intrusive version necessary. We were able to fade all of the scripts and several components of the activity schedules. For two of the three participants with autism we were able to fade the schedule from two binders to a visual cue displaying the order of the seekers. For the third participant we were able to fade one binder and the majority of the components in the second binder. The participants were able to continue to play hide-and-seek with the faded versions of the schedules in a novel environment and 2-weeks after treatment concluded.

Styles APA, Harvard, Vancouver, ISO, etc.

19

Alomari, Mohammad H. « Engineering System Design for Automated Space Weather Forecast. Designing Automatic Software Systems for the Large-Scale Analysis of Solar Data, Knowledge Extraction and the Prediction of Solar Activities Using Machine Learning Techniques ». Thesis, University of Bradford, 2009. http://hdl.handle.net/10454/4248.

Texte intégral

Résumé :

Coronal Mass Ejections (CMEs) and solar flares are energetic events taking place at the Sun that can affect the space weather or the near-Earth environment by the release of vast quantities of electromagnetic radiation and charged particles. Solar active regions are the areas where most flares and CMEs originate. Studying the associations among sunspot groups, flares, filaments, and CMEs is helpful in understanding the possible cause and effect relationships between these events and features. Forecasting space weather in a timely manner is important for protecting technological systems and human life on earth and in space. The research presented in this thesis introduces novel, fully computerised, machine learning-based decision rules and models that can be used within a system design for automated space weather forecasting. The system design in this work consists of three stages: (1) designing computer tools to find the associations among sunspot groups, flares, filaments, and CMEs (2) applying machine learning algorithms to the associations¿ datasets and (3) studying the evolution patterns of sunspot groups using time-series methods. Machine learning algorithms are used to provide computerised learning rules and models that enable the system to provide automated prediction of CMEs, flares, and evolution patterns of sunspot groups. These numerical rules are extracted from the characteristics, associations, and time-series analysis of the available historical solar data. The training of machine learning algorithms is based on data sets created by investigating the associations among sunspots, filaments, flares, and CMEs. Evolution patterns of sunspot areas and McIntosh classifications are analysed using a statistical machine learning method, namely the Hidden Markov Model (HMM).

Styles APA, Harvard, Vancouver, ISO, etc.

20

Alomari, Mohammad Hani. « Engineering system design for automated space weather forecast : designing automatic software systems for the large-scale analysis of solar data, knowledge extraction and the prediction of solar activities using machine learning techniques ». Thesis, University of Bradford, 2009. http://hdl.handle.net/10454/4248.

Texte intégral

Résumé :

Coronal Mass Ejections (CMEs) and solar flares are energetic events taking place at the Sun that can affect the space weather or the near-Earth environment by the release of vast quantities of electromagnetic radiation and charged particles. Solar active regions are the areas where most flares and CMEs originate. Studying the associations among sunspot groups, flares, filaments, and CMEs is helpful in understanding the possible cause and effect relationships between these events and features. Forecasting space weather in a timely manner is important for protecting technological systems and human life on earth and in space. The research presented in this thesis introduces novel, fully computerised, machine learning-based decision rules and models that can be used within a system design for automated space weather forecasting. The system design in this work consists of three stages: (1) designing computer tools to find the associations among sunspot groups, flares, filaments, and CMEs (2) applying machine learning algorithms to the associations' datasets and (3) studying the evolution patterns of sunspot groups using time-series methods. Machine learning algorithms are used to provide computerised learning rules and models that enable the system to provide automated prediction of CMEs, flares, and evolution patterns of sunspot groups. These numerical rules are extracted from the characteristics, associations, and time-series analysis of the available historical solar data. The training of machine learning algorithms is based on data sets created by investigating the associations among sunspots, filaments, flares, and CMEs. Evolution patterns of sunspot areas and McIntosh classifications are analysed using a statistical machine learning method, namely the Hidden Markov Model (HMM).

Styles APA, Harvard, Vancouver, ISO, etc.

21

Pettersson, Sofia. « You can scroll but you can't hide : En kvalitativ studie över tre åldersgruppers kritik och motstånd mot sponsrade inlägg på Instagram ». Thesis, Umeå universitet, Institutionen för kultur- och medievetenskaper, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-118937.

Texte intégral

Résumé :

”You can scroll but you can’t hide - a qualitive study of three age groups critique and resistance against sponsored posts on Instagram” Author: Sofia PetterssonCourse: Applied strategic communications The aim of this study is to investigate and try to make sense of the critical thinking and following resistance by three age groups against sponsored posts on Instagram. The theoretical background of the study includes Stuart Halls model of encoding/decoding, and Michel Foucaults abstract theories of power/knowledge. The investigative method through which the empirical materials have been gathered is three focus group interviews with three different age groups — 12-16 years old, 19-29 years old and 30-55 years old. To analyze the statements gathered in the focus group interviews, the method of discourse psychology have been applied to the material. The aim of this was to bring forth the repertoars which the groups use to construct reality according to them, and to try and understand how they construct their own identities, both within the group but also the individual.The results were somewhat inconclusive. The study shows that though the older the more consequential the groups think, the method for resistance varied a lot. The youngest group showed some critical thinking and shows tendencies to avoid the advertisements by leaving Instagram. The problem with this group is that they don’t really know why they do this. And they don’t display any deeper understanding as to why they think the way they do. The group 19-29 years showed a more complex understanding of consequences and their critical thinking is more well rounded. In spite of this, this group doesn't show much resisting behavior. The oldest group was the most critical, and talked about more consequential subjects and problems with this kind of advertising. Furthermore, the oldest group had the most knowledge about the technical structures that the sponsored posts are made of and therefore has the best position for resisting the marketing techniques in place. The study is 42 pages long.

Styles APA, Harvard, Vancouver, ISO, etc.

22

McPhee, Iain. « The intentionally unseen : exploring the illicit drug use of non-treatment seeking drug users in Scotland ». Thesis, University of Stirling, 2012. http://hdl.handle.net/1893/9921.

Texte intégral

Résumé :

There is a perception that drug use is a serious and growing problem to be solved by medicine, social work and drug enforcement agencies. This thesis takes a critical standpoint again such populist views and interprets drug use as one of any number of normal activities that people engage. This qualitative research utilising a bricoleur ethnographic methodology focuses on the drug taking of non-treatment seeking illegal drug users. The data reveals that they manage several social identities and the potential stigma of being discovered as an illicit user of illegal drugs utilising several strategies to remain intentionally unseen. The thesis explores how and in what way socially competent drug users differ from visible treatment seeking drug users. In order to develop this understanding, several gatekeepers were identified and within their social networks the participants were recruited into this research. The participants (n=24) were recruited from a wide range of age groups (21-52) and geographical locations within Scotland. One to one interviews, a focus group, and several pair bonded partners were interviewed together providing rich sources of data. Interviews were transcribed and analysed thematically from a social constructionist perspective. The findings illuminate the ways in which the intentionally unseen identify and manage risks from drugs, drugs policy and the potential shame and stigma were their hidden social worlds revealed. The practical implications of the results of this thesis are explored and recommendations for future research are discussed.

Styles APA, Harvard, Vancouver, ISO, etc.

23

Cosme, Carlos Magno Martins. « Algoritmos quânticos para o problema do subgrupo oculto não Abeliano ». Laboratório Nacional de Computação Científica, 2008. https://tede.lncc.br/handle/tede/78.

Texte intégral

Résumé :

Made available in DSpace on 2015-03-04T18:50:57Z (GMT). No. of bitstreams: 1 Tese-Carlos-Magno1.pdf: 616333 bytes, checksum: 65e51c95902afd18d11a1d7366653fc0 (MD5) Previous issue date: 2008-03-13
Conselho Nacional de Desenvolvimento Cientifico e Tecnologico
We present an efficient quantum algorithm for the Hidden Subgroup Problem (HSP) on the semidirect product of the cyclic groups and , where is any odd prime number, and are positives integers and the homomorphism which defines the group is given by the root such that . As a consequence we can solve efficiently de HSP on the semidirect product of the groups by , where has a special prime factorization.
Neste trabalho apresentamos um algoritmo quântico eficiente para o Problema do Subgrupos Oculto (PSO) no produto semidireto dos grupos cíclicos e , onde é qualquer número primo ímpar, e são inteiros positivos e o homomorfismo que define o grupo é dado por uma raiz para a qual . Como conseqüência, podemos resolver eficientemente o PSO também no produto semidireto dos grupos por , onde o inteiro possui uma especial fatoração prima.

Styles APA, Harvard, Vancouver, ISO, etc.

24

Cheng-ChunChiang et 江承峻. « Group Sparse Hidden Markov Models for Speech Recognition ». Thesis, 2011. http://ndltd.ncl.edu.tw/handle/83320485604545241927.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

25

Shih, Chih-Huai, et 施智懷. « A Study of Complex Group Testing via Learning Hidden Graphs ». Thesis, 2015. http://ndltd.ncl.edu.tw/handle/91617305833483735198.

Texte intégral

Résumé :

博士
國立交通大學
應用數學系所
103
In classical group testing, one is given a population N and an unknown subset D\N of positive items, and the goal is to determine D by asking queries of the type ``whether a subset of N contains a positive item". The problem has been applied to many fields and generates different type of models and problems, such as complex group testing, threshold group testing, and the inhibitor model. In general, group testing algorithm can be roughly classified into two types: sequential and nonadaptive. A sequential (or adaptive) algorithm conducts tests sequentially and each test may depend on the outcome of previous tests. A nonadaptive algorithm designs all the tests beforehand and thus each test is independent of the outcomes of other tests. Between the sequential and nonadaptive algorithms, there are the s-stage algorithms where stages are sequential and tests in a stage are parallel. The complex model of group testing can be formulated as a problem of learning a hidden hypergraph by edge-detecting queries, each of which tells whether a set of vertices induces an edge of the hidden graph or not. In this thesis, we first reconstruct some hidden graphs of particular structure, including Hamiltonian cycles, matchings, stars, and cliques. We provide fully adaptive algorithms that reduce the number of queries needed. Then we provide a new information-theoretic lower bound and give a more efficient adaptive algorithm to learn a general graph with n vertices and m edges in mlogn + 10m + 3n edge-detecting queries. Finally, we extend the result of general graphs and provide an adaptive algorithm to learn a hidden r-uniform hypergraph with n vertices and m edges in mr(logn + 1)+(r+1)m+m^{r-1}+2^{(r+2)/2}r^{r}m^{r/2} edge-detecting queries. On the application issue, learning a hidden hypergraph is helpful for us to solve the threshold group testing problem. In this thesis, we apply the strategy used in reconstructing a hidden hypergraph to the threshold group testing problem without gap, showing that up to d positive elements among n given elements can be determined by using O(dlogn) queries, with a matching lower bound. We can also consider threshold group testing on k-inhibitor model, which is a natural combination of threshold group testing and inhibitor model. Then we provide nonadaptive algorithms to conquer the threshold group testing on k-inhibitor model where error-tolerance is considered. Furthermore, we provide a two-stage algorithm to identify all inhibitors and find a g-approximate set S. Note that S is g-approximate set if and only if |S\D|<=g and |S\D|<=g where g is the gap and D is the set of positive items.

Styles APA, Harvard, Vancouver, ISO, etc.

26

Donovan, Angela S. « Development and Testing of an Intervention to Improve Group Decision-Making Effectiveness in a Hidden Profile Scenario ». Thesis, 2010. http://hdl.handle.net/1805/2125.

Texte intégral

Résumé :

Indiana University-Purdue University Indianapolis (IUPUI)
Research has repeatedly shown that when groups whose members have varying expertise are combined to make a decision, they tend to discuss common information at a higher rate than unique information, hindering their ability to make the best decision. In response to these findings and the fact that organizations are increasingly using groups rather than individuals to make important decisions, a new intervention was developed based on past research to help groups make better decisions and discuss more unique information. The intervention was developed through three phases to determine which techniques were most powerful. The formal evaluation of the intervention was tested on a total of 228 undergraduate students (44 groups of four and 52 individuals). Groups were randomized into an experimental condition, receiving the intervention, or a control condition. Groups participated in a hidden profile business simulation acting as the top management team of a fictional Hollywood movie studio. Information was distributed so that there was common and unique information for each group. Groups given the intervention made significantly better decisions, shared more unique information, and performed significantly better than individuals. Unique information sharing was positively related to performance and the unique information given to one group member mediated the relationship between the condition and performance. In addition, this study revealed that within the inventory of unique information, different types of information may be more critical in reaching the best possible decision than others. Future research aims and implications are discussed.

Styles APA, Harvard, Vancouver, ISO, etc.

27

Jackson, Bronwyn. « Information sharing in self-directed work groups in a competitive environment ». Thesis, 2012. http://hdl.handle.net/10539/11638.

Texte intégral

Résumé :

Self-directed work groups are a growing phenomenon in the field of organisational psychology (Kauffeld, 2006; Neck & Manz, 1994). While much is known about what factors affect information sharing in these kinds of groups, little is known about why these factors have an impact and how they relate to each other. Through the concept of hidden profiles (tasks that by nature have shared and unshared information), this study explored the information sharing and group decision making processes and aimed to illuminate the group processes involved. The study employed a qualitative, ideographic approach where case studies were used. The sample consisted of twenty four undergraduate and postgraduate students studying at the University of the Witwatersrand divided into groups of four members each. A group task to rank the best candidate for a job was self-designed based on the theory and design utilized by Stasser and Titus (1985; 1987). This was first completed individually and then as a group – the group discussion was filmed and coded using a self-developed observation rubric. Participants also completed a self-developed post-task questionnaire regarding their perspectives of various aspects of the decision making process. The analysis was carried out using frequency counts and thematic content analysis. It was found that all the groups discussed more shared information and more unshared negative information was discussed than unshared positive information. Information sharing increased when there was debate about which pieces of information were relevant. In most cases, group members were motivated to share information because they wanted to have their opinion heard. Although the majority of the sample stated that they did not withhold any information, there was evidence of strategic information sharing. Group 5 made a decision that was closest to the ideal decision. Characteristics of this group that could have contributed to this included: long duration of discussion; high number of talking turns; respecting each other’s talking turns; moderate levels of disagreement; no obvious role of leader; moderately high levels of group familiarity; diversity in race not gender; similar educational backgrounds and a norm of critical evaluation. The study found that the interactions between factors that were perceived to affect the information sharing and decision-making (such as duration of discussion, number of talking turns, group familiarity, competitive aspects, group composition and group roles) were more interwoven than previously thought.

Styles APA, Harvard, Vancouver, ISO, etc.

28

Giersiepen, Annika Nora. « Verzerrter Recall als potentielles Hindernis für Synergie bei Gruppenentscheidungen ». Doctoral thesis, 2016. http://hdl.handle.net/11858/00-1735-0000-002B-7D49-8.

Texte intégral

Résumé :

In Hidden Profiles gelingt es Gruppen häufig nicht, ihr Potenzial, bessere Entscheidungen als jedes ihrer Mitglieder zu treffen, zu erfüllen. Für dieses Phänomen wurden bereits verschiedene Ursachen ermittelt. Dazu gehören insbesondere Verzerrungen im Inhalt der Gruppendiskussion sowie der Bewertung von entscheidungsrelevanten Informationen durch die Gruppenmitglieder. In der vorliegenden Arbeit wird nun ein weiterer Aspekt individueller Informationsverarbeitung untersucht, dessen Verzerrung einen nachteiligen Einfluss auf die Entscheidungsqualität von Diskussionsgruppen haben könnte: der individuelle Recall bezüglich aufgabenrelevanter Informationen. Dabei werden zwei Verzerrungen postuliert: Ein Erinnerungsvorteil von Informationen, welche die ursprüngliche Präferenz des jeweiligen Gruppenmitglieds unterstützen sowie eine Verzerrung zugunsten von Informationen, die bereits vor der Diskussion verfügbar sind. Es wird angenommen, dass beide Verzerrungen einen negativen Einfluss auf die Entscheidungsqualität des Individuums und somit auch der gesamten Gruppe haben. Diese Annahmen wurden in einer Reihe von vier Experimenten und der Reanalyse zweier früherer Studien untersucht. Insgesamt wurde dabei Evidenz für einen Erinnerungsvorteil eigener, vor der Diskussion bekannter Informationen gegenüber in der Diskussion neu gelernten Informationen gefunden. Belege für einen Erinnerungsvorteil präferenzkonsistenter Informationen zeigten sich dagegen nur vereinzelt und in einer metaanalytischen Zusammenfassung nicht in signifikantem Maße. Eine experimentelle Manipulation der Erinnerungsverzerrungen liefert keinen Hinweis auf einen Zusammenhang zwischen diesen Faktoren und der Entscheidungsqualität in Hidden-Profile- Situationen. Eine Verzerrung der individuellen Erinnerung im Hinblick auf entscheidungsrelevante Informationen ist somit nach den Ergebnissen dieser Arbeit keine sinnvolle Erweiterung der bestehenden Erklärungsansätze für das Scheitern von Entscheidungsgruppen an der Realisierung von Synergien.

Styles APA, Harvard, Vancouver, ISO, etc.

29

Bujela, Ntobeko Isaac. « An overview of hidden symmetries ». Thesis, 2012. http://hdl.handle.net/10413/10605.

Texte intégral

Résumé :

Approaches to nding solutions to di erential equations are usually ad hoc. One of the more successful methods is that of group theory, due to Sophus Lie. In the case of ordinary di erential equations, the subsequent symmetries obtained allow one to reduce the order of the equation. In the case of partial di erential equations, the symmetries are used to nd (particular) group invariant solutions by reducing the number of variables in the original equation. In the latter case, these solutions are particularly popular in applications as they are often the only physically signi cant ones obtainable. As a result, it is now becoming traditional to apply this symmetry method to nd solutions to di erential equations in a systematic manner. Based upon the Lie algebra of symmetries of the equation, we expect a certain number of symmetries after the reductions. However, it has become increasingly observed that, after reduction, more symmetries than expected are often obtained. These are called Hidden Symmetries and they provide new routes for further reduction. The idea of our research is to give an overview of this phenomenon. In particular, we investigate the possible origins of these symmetries. We show that they manifest themselves as nonlocal symmetries (or potential symmetries), contact symmetries or nonlocal contact symmetries of the original equation as well as point symmetries of another equation of same order.
Thesis (M.Sc.)-University of KwaZulu-Natal, Westville, 2012.

Styles APA, Harvard, Vancouver, ISO, etc.

30

Isah, Haruna, Daniel Neagu et Paul R. Trundle. « Bipartite Network Model for Inferring Hidden Ties in Crime Data ». 2015. http://hdl.handle.net/10454/10919.

Texte intégral

Résumé :

No
Certain crimes are difficult to be committed by individuals but carefully organised by group of associates and affiliates loosely connected to each other with a single or small group of individuals coordinating the overall actions. A common starting point in understanding the structural organisation of criminal groups is to identify the criminals and their associates. Situations arise in many criminal datasets where there is no direct connection among the criminals. In this paper, we investigate ties and community structure in crime data in order to understand the operations of both traditional and cyber criminals, as well as to predict the existence of organised criminal networks. Our contributions are twofold: we propose a bipartite network model for inferring hidden ties between actors who initiated an illegal interaction and objects affected by the interaction, we then validate the method in two case studies on pharmaceutical crime and underground forum data using standard network algorithms for structural and community analysis. The vertex level metrics and community analysis results obtained indicate the significance of our work in understanding the operations and structure of organised criminal networks which were not immediately obvious in the data. Identifying these groups and mapping their relationship to one another is essential in making more effective disruption strategies in the future.

Styles APA, Harvard, Vancouver, ISO, etc.

31

Vicente, Duarte Bruno Xavier. « Desconsideração da personalidade jurídica nas sociedades comerciais ». Master's thesis, 2021. http://hdl.handle.net/10071/24194.

Texte intégral

Résumé :

O presente estudo visa proceder à análise e aplicação de um mecanismo doutrinário em concreto que permite tutelar os interesses dos credores: a desconsideração da personalidade jurídica. Quando ocorre um abuso do princípio da autonomia patrimonial na esfera da pessoa coletiva por parte de um sócio com fins alheios, que se permite, desta forma isentar-se de certa responsabilidade perante os credores, eis que nos surge este instituto que levanta o véu derrogando o princípio patrimonial por forma a alcançar a responsabilidade do homem-oculto (o sócio) por este mesmo abuso, fazendo-se justiça. Este instituto doutrinário tem a sua base legal em artigos de interpretação ampla, não existindo uma base legal em concreto, propõe-se à realidade dos factos quando estes fogem do escopo de aplicação da lei positivada, reside, portanto, nas construções doutrinárias a fundamentação deste instituto, que tem em vista a responsabilização do sócio lesante. Para fins deste estudo entenda-se a ideia de ser esta a via que pretendemos utilizar para tutelar os interesses dos credores. Assim, a nossa proposta passa por contextualizar o instituto, nomeadamente no que diz respeito às pessoas jurídica e nos princípios que lhe dão o protagonismo à luz do direito societário. Analisar-se-á a aplicação através das respetivas teorias e casos-tipo, além da análise da legislação de responsabilização do sócio e jurisprudência. Terminamos este estudo com um aprofundamento da aplicabilidade deste instituto aos grupos de sociedades onde se vai abordar o regime de responsabilidade destes e aplicação do instituto da desconsideração da personalidade jurídica nesse mesmo regime.
This study aims to analyse and apply a specific doctrinal mechanism that allows a protection of the interests of creditors: the disregard of the legal personality. When there is an abuse of the autonomy principal in a legal entity patrimonial sphere by a partner for alien purposes, which allows him, to exempt himself from certain responsibilities to creditors, this institute arises, lifting the veil and, derogating from the patrimonial principle in order to achieve the responsibility of the hidden man (the partner) for this abuse, doing justice. This doctrinal institute has its legal basis in articles of broad interpretation, as there is no established legal basis, it proposes to reality of facts when they are beyond the scope of application of the positive law. Therefore, the basis of this institute resides in the doctrinal constructions. For the purposes of this study, the idea is that this is the way we intend to use to protect the interests of creditors. Therefore, our proposal is to contextualize the institute, essentially in what concerns to legal entities and the principles that give it the prominence in the light of corporate law. The application will be analysed through the respective theories and case -types, in addition to the analysis of the partner accountability legislation and jurisprudence. We finish this study with an in-depth look into the applicability of this institute to groups of companies, which will be addressing their liability regime and the application of the institute of disregard of the legal personality.

Styles APA, Harvard, Vancouver, ISO, etc.

32

« Exploiting Review Texts, Hidden User Communities and Item Groups for Collaborative Filtering and Spamming Detection ». 2016. http://repository.lib.cuhk.edu.hk/en/item/cuhk-1292475.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

33

Rivombo, Alfred Mashau. « A study of the challenges of adult learning facilitation in a diverse setting with special reference to Soshanguve ». Diss., 2014. http://hdl.handle.net/10500/14198.

Texte intégral

Résumé :

A critical cross-field outcome of Curriculum 2005 as introduced in South Africa is to work effectively with others as members of a team, group, organization, and community. This research aims at investigating challenges that impede adult learners from diverse backgrounds to work effectively as members of a team, group, organization and community. Informed by models of education in lifelong learning (intercultural, multicultural and anti-racist models of education which supplement andragogy), a qualitative inquiry which followed an active research approach was undertaken in selected adult learning centres in Soshanguve in Gauteng Province to explore the challenges of diversity during adult learning facilitation. Data was gathered from sixteen adult education facilitators from four adult education centres by means of in-depth interviews, follow-up interviews and observational fieldwork. Findings indicated that facilitators require additional knowledge and skills to achieve the objectives of the intercultural, multicultural and anti-racist models of education effectively; senior adult learners require particular attention from facilitators to prevent learner attrition in this age group; linguistic diversity problematises effective intercultural communication, especially where the facilitator is not proficient in learners‟ home languages; and awareness should be raised of the negative impact of inflexible attitudes towards certain aspects of diversity such as religion and sexual orientation on effective teaching and learning. However, positive adult education facilitation practices were also observed. Based on the findings of the literature review and the empirical inquiry recommendations for the improvement of practice were made.
ABET and Youth Development
M. Ed. (Adult and Continuing Education)

Styles APA, Harvard, Vancouver, ISO, etc.

34

Chun-Hsuan, Yang, et 楊濬瑄. « The Hidden and Reappearance of the Ethnic Boundary : the Diverse Ways of Interactions among Local Groups in Fuxing Village, Chihshang Township ». Thesis, 2018. http://ndltd.ncl.edu.tw/handle/hzpxze.

Texte intégral

Résumé :

碩士
國立臺東大學
公共與文化事務學系南島文化研究碩士班
106
There are many ethnic groups live in Chihshang Township. When talking about Amis people here, others and themselves would said “ we are the same,” which means there are no obvious differences between Amis people and other ethnic groups. This thesis is going to discuss this phenomenon based on the interactions between different local ethnic groups in their daily lives in Fuxing Village, a multi-ethnic village, including Pinpu, Amis , Min-Nan and Hakka people, in Chihshang Township. People face the same environmental condition, and do similar livelihood here. They have to work together and help each other to maintain their lives here, and thus their life styles and cultures gradually integrate. However, that doesn’t mean the boundaries between different ethnic groups disappear, on the opposite, it is emphasized nowadays because of the government’s promotion of the ethnic programs and activities. This thesis is not going to break the concept of “ethnic” but to see how ethnic boundaries being hidden or appeared in different local contexts. Nowadays, the connection between people become more frequently and complex, it is important to see how people cross the ethnic boundaries, and at the same time maintain their ethnic identity in local contexts.

Styles APA, Harvard, Vancouver, ISO, etc.

35

Panaretos, Panagiota. « Perceptions of the adult role among adolescent Greek girls in Johannesburg ». Diss., 2001. http://hdl.handle.net/10500/788.

Texte intégral

Résumé :

The formulation of the perceptions of the adult role among adolescent Greek girls in Johannesburg, is a complex matter. The girls are influenced by their Greek cultural upbringing, while also experiencing the effects of inherent gender inequalities in the education system. This study investigated the perceptions of the adult role among adolescent Greek schoolgirls in Johannesburg and the implications for educational provision. A literature survey investigated the formation of gender identity among adolescent girls. Existing research on the issues of gender in education was reviewed. A qualitative study of the life-world of eight adolescent Greek schoolgirls was conducted. Data elicited from semi-structured interviews were analysed, discussed and synthesised. The major findings emanated. The girls were influenced in their adult role perceptions by their cultural backgrounds, but all expressed a desire to strive for new levels of independence. Guidelines for relevant educational provision were proposed.
Educational Studies
M. Ed. (Comparative Education)

Styles APA, Harvard, Vancouver, ISO, etc.

Thèses sur le sujet « Hidden group »

Créez une référence correcte selon les styles APA, MLA, Chicago, Harvard et plusieurs autres