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See detailNourrir à l’herbe : principales règles nutritionnelles pour réussir
Beckers, Yves ULg

Conference given outside the academic context (2016)

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See detailUrban soils with a sideway glance
Meulemans, Germain ULg

Conference (2016, September 03)

The soils of cities are becoming an important subject for the soil sciences, triggering revisions in their usual modes of research and concepts. One implication of this is the resort to the 'ecological ... [more ▼]

The soils of cities are becoming an important subject for the soil sciences, triggering revisions in their usual modes of research and concepts. One implication of this is the resort to the 'ecological engineering' of soils, framed as a research in soil processes through the active making of soils from scratch. In this, several voices from inside the Soil sciences call for a move from descriptive research to open-ended experimentation. A similar move has also been called for in anthropology. Ingold, notably, suggests to revive the 'craft of anthropology' (2008), encouraging anthropologists to participate in the carrying on of life through craft and experimentation, rather than restraining to retrospective accounts of its unfolding dynamics. How, then, can turns towards making resonate between the practices of soil scientists and those of the anthropologists that attempt to study them? In this paper, I present a collaborative experiment between artists, anthropologists and soil scientists that was carried out in a series of residences near Paris between 2015 and 2016. The residential sessions consisted in a continuation and speculative exploration of the questions raised in both the soil sciences and anthropology in an experimental, creative way - addressing the intertwinement of human and soil becomings from direct engagement with them. The paper addresses how such experiments can be a research process, aimed at exploring the world 'with a sideway glance' (Ingold, 2008). The paper concludes with open questions on where anthropological investigation through art making might play a role in the future of disciplinarities. [less ▲]

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See detailHow to implement the recommendations for Quality Physical Education?
Cloes, Marc ULg; Ralaivao, Michel; Ranaivoson, Patrice et al

Conference (2016, September 03)

According to the growing of the sedentariness over the world and to its negative resulting consequences for the society, it is now mandatory to act. Following the socioecological model, the solution of ... [more ▼]

According to the growing of the sedentariness over the world and to its negative resulting consequences for the society, it is now mandatory to act. Following the socioecological model, the solution of this challenge can be found in a multi-sectoral approach involving all pillars of the society. School represents the corner stone of any project aiming to influence the future. It has been pointed out as a determining element in the impact of projects aiming to promote physical activity in children as well as in adolescents, particularly when combined with other actors such as the community. During school time, several opportunities are available in order to increase the time spent in physically active behavior. A quality physical education (QPE) plays a central role in such action of the school. In 2015, UNESCO proposed guidelines aiming to promote QPE all around the world. In fact, it appears that, in many countries, stakeholders as well as physical educators do not have the resources needed to change the current policies and practices. Moreover, literature does not provide theoretical/practical support that would be necessary to implement new teaching strategies. This symposium will focus on an action research aiming to go from theory to practice on a national level. The study is built on the collaboration between the International Committee of Sport Pedagogy and the ‘Académie Nationale des Sports’ (ANS) of Madagascar. It is designed to reform and modernize physical education and sports organization in this country. The cooperation focused on the improvement of the quality of physical education, school sports, and leisure/competitive sports practice. It is based on a bottom-up process. The major aim of this process is to identify the priorities of the country in order to improve the quality of physical education in schools, sports clubs and communities emphasizing diversity, accessibility, inclusion and equity. Qualitative approaches have been implemented in order to take into account the needs of the people and the available resources. [less ▲]

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See detailAssessing Basic Motor Competencies in Primary School – an International Comparative Study in Europe
Scheuer, Claude; Cloes, Marc ULg; Colella, Dario et al

Conference (2016, September 03)

A central aim of primary physical education (PE) is the promotion of physical competencies as a necessary condition of developing a physically active lifestyle and to be able to participate in the Olympic ... [more ▼]

A central aim of primary physical education (PE) is the promotion of physical competencies as a necessary condition of developing a physically active lifestyle and to be able to participate in the Olympic community. We defined basic motor competencies as physical performance dispositions, which evolved from task-specific requirements in the culture of sports and exercise. They are supposed to be learnable, based on previous experiences and can be improved through practice. Potential evaluations of effects in PE need to consider situation-specific and context-dependent characteristics of PE as well as prior experiences of pupils. Therefore, a design for test items, which are closely related to PE and vary in difficulty depending on the age of the pupils, is necessary. For this purpose, we developed the MOBAK-1 test instrument for the assessment of basic motor competencies in first graders. It allows teachers to identify groups in need of special support, and initiate these support measures to reduce inequalities. The first study took place in Zurich (Switzerland) and focused on construct validity (e.g., the factorial validity of the instrument). Between spring 2015 and spring 2016, the MOBAK-1 test instrument was and will be implemented in further countries in Europe. At this time, we have four samples of four different countries: (1) Switzerland (Zurich) (N = 317; girls = 55%; age: M = 7.04 years [SD = .37]; BMI = 16.08 [SD = 2.25]) assessed by University of Basel (Dr. Christian Herrmann); (2) Germany (Frankfurt) (N = 1061; girls = 45%; age: M = 6.80 years [SD = .89]; BMI = 16.30 [SD = 2.37]) assed by University of Frankfurt (Prof. Dr. Christopher Heim); (3) Lithuania (Kaunas) (N = 120; girls = 48%; age: M = 7.76 years [SD = .33]; BMI = 16.14 [SD = 2.30]) assessed by Lithuanian Sports University (Assoc. Prof. Dr. Arunas Emeljanovas); (4) Italy (Foggia) (N = 85; girls = 45%; age: M = 7.24 years [SD = .30]; BMI = 17.53 [SD = 3.04]) assessed by University of Foggia (Prof. Dr. Dario Colella). Further samples are currently on the way to be completed in four other countries: (1) Luxembourg (N = 280) assessed by University of Luxembourg (Claude Scheuer); (2) Slovakia (Trnava) (N = 240) assessed by University of Trnava (Dr. Dana Masarykova); (3) Czech Republic (Brno) (N = 600) assessed by University of Brno (Dr. Petr Vlcek); (4) Belgium (Liège) (N = 450) assessed by University of Liège (Prof. Dr. Marc Cloes and Dr. Boris Jidovtseff). In the initial validation study in Switzerland, two factors consisting of four items each were found. The related EFA (Study 1: CFI=.98; RMSEA=.024) and CFA (Study 2: CFI =.95; RMSEA=.044) revealed good model fit indices. The first factor “Locomotion” represents body movements (e.g., balancing), the second factor “Object-control” represents ball control (e.g., catching). Conclusions: The developed MOBAK test instrument meets psychometric validity demands based on the Swiss data. The presentation will show the results of the validation studies in further European countries and the results of the comparative study. [less ▲]

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See detailVibrations in the Flat Land- A Study of the Vibrational Properties of the Transition-Metal Dichalcogenides
Pike, Nicholas ULg; Dewandre, Antoine ULg; Verstraete, Matthieu ULg et al

Scientific conference (2016, September 03)

Calculations of the vibrational properties of the transition-metal dichalcoginides depend critically on the lattice parameters, symmetries of the underlying system, and the non-local dispersive ... [more ▼]

Calculations of the vibrational properties of the transition-metal dichalcoginides depend critically on the lattice parameters, symmetries of the underlying system, and the non-local dispersive interaction. Here we present phonon band structure calculations, dielectric tensors, elastic tensors, and Born Effective Charges for the transition-metal dichalcogenides $MoS_2$, $MoSe_2$, $MoTe_2$, $WS_2$, $WSe_2$, $NbS_2$, and $NbSe_2$. We systematically investigate the role of the long-range $e^⁻$-$e^⁻$ interaction, spin-orbit coupling, and pseudo-potential approximation, and highlight their importance on the TMD structural and vibrational properties. We find that the phonon spectrum, calculated with the help of a Grimme's D3 non-local Van der Waals interaction depends strongly on the accuracy of the lattice parameters and slightly on the addition of the non-local Van der Waals interaction in the phonon frequency itself. We also find that the sign of the Born Effective Charges on each atom in the Hexagonal TMDs are the opposite of similarly structured compounds. We explore reasons as to why this occurs. Additionally, our calculation of the dielectric tensor and elastic tensor allow us to describe the mechanical properties of the system which are necessary to know for future device applications. [less ▲]

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See detail“That’s only statistics”:Recording PPPs in national accounts
Piron, Damien ULg

Conference (2016, September 02)

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See detailNON-DERMATOPHYTE DERMATOSES MIMICKING DERMATOPHYTOSES IN HUMANS
Libon, Florence ULg; TASSOUDJI, Nazli ULg; DEZFOULIAN, Bita ULg et al

in Mycopathologia (2016)

Human dermatophytic cutaneous infections usually present as single or multiple slowly progressing annular erythemato-squamous lesions with a tendency to central healing on the hairless skin. In the ... [more ▼]

Human dermatophytic cutaneous infections usually present as single or multiple slowly progressing annular erythemato-squamous lesions with a tendency to central healing on the hairless skin. In the intertriginous regions (feet, inguinal, axillar, submammary), dermatophytic colonisations and infections manifest as whitish, slightly hyperkeratotic, pruritic and sometimes fissurated lesions. On the scalp, dermatophytic infections commonly lead to single or multiple more or less inflammatory and alopecic lesions. On the plantar and palmar aspects of the feet and hand, dermatophytosis presents as an eczema-like chronic dermatosis. Abscess-like lesions may occur due to zoophilic dermatomycosis. Dermatophytic infections of the nails reveal ill-defined whitish-yellowish colorations of the distal end or the lateral aspects of the nails, sometimes combined with partial nail embrittlement or even complete destruction. Despite the ubiquity of dermatophytic skin infections and their usually highly typical clinical features, a differential diagnosis has to be considered, in particular when treatment is not efficient or when treatment resistance occurs. This review presents the differential diagnosis in terms of frequency as well as the diagnostic methods permitting the distinction of annular, intertriginous, alopecic, palmoplantar, abscess-like and onychodystrophic lesions. [less ▲]

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See detailMerger incentives under yardstick competition: A theoretical model
Teusch, Jonas ULg

Scientific conference (2016, September 02)

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See detail"Right to shape" decisions: the closing up as new strategy to move forward with high-level radioactive wastes
Parotte, Céline ULg

Conference (2016, September 02)

Short Abstract This presentation suggests a comparison between public invited critics and their integrations in Belgian, Canadian and French institutionalized processes to highlight the different ... [more ▼]

Short Abstract This presentation suggests a comparison between public invited critics and their integrations in Belgian, Canadian and French institutionalized processes to highlight the different combinations of opening up and closing down appraisals and commitments. This comparison reveals the closing up strategy of government to move forward with nuclear wastes. Since the 90’s onwards, Canadian, Belgian and French nuclear establishment (Durant 2009) have developed several different strategies to involve the public at each constitutive steps of the siting process of nuclear wastes management. Each of them has divided the decision-making process in distinct phases to focus first on the conceptual phase (go for an option) before the operational phase (go for siting). Each country has its own dynamic managed by different actors. For example, in Canada, the nuclear waste organization (NWMO) has provided iterative and permanent experts and public consultations since 2002. In France, it is the French PTA (OPECST) and National Commission of Public Debate (CNDP) who have periodically provided punctual public consultations before every important commitment. Meanwhile in Belgium, only two important punctual debates have been provided by the nuclear waste organization (ONDRAF) and an independent foundation (FRD) and are still waiting for the “go for an option”. This presentation suggests a comparison of the public invited critics (Wynne 2007) who have accepted the invitation of nuclear wastes managers, following their integrations in three different institutionalized processes (in Belgium, in France and in Canada) and the change their integrations produced in terms of closing down and opening up appraisals and commitments (Stirling 2008). It highlights how the different governments finally chosen a closing “up” commitment in order to manage the right of public to continue to shape partially the commitment as well the right of expert to continue to develop the option (geological disposal) they support since the 70’s. Data used include a combination of theoretical and empirical materials – i.e. participatory observations of consultation processes, 90 semi-directive interviews with policy makers, nuclear waste agencies, nuclear regulators in France, Belgium and Canada and local actors such as members of local information and monitoring council (CLIS) and members of community liaison committee of four volunteer collectivities (CLC). Durant, Darrin. 2009. "Radwaste in Canada: a political economy of uncertainty." Journal of Risk Research 12 (7-8):897-919. doi: 10.1080/13669870903126127. Stirling, Andy. 2008. ""Opening Up" and "Closing Down" Power, Participation, and Pluralism in the Social Appraisal of Technology." Science, Technology & Human Values 33:262-294. Wynne, Brian. 2007. "Public participation in science and technology: performing and obscuring a political–conceptual category mistake." East Asian Science, Technology and Society 1 (1):99-110. [less ▲]

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See detailThe influence of COMT on the neural substrates of short-term memory in normal aging
Manard, Marine ULg; Salmon, Eric ULg; Collette, Fabienne ULg

Conference (2016, September 02)

Working memory dopaminergic modulation is generally expressed in healthy aging by an advantage for carriers of the Met allele at behavioral and brain activity levels. However, most tasks used did not ... [more ▼]

Working memory dopaminergic modulation is generally expressed in healthy aging by an advantage for carriers of the Met allele at behavioral and brain activity levels. However, most tasks used did not allow to easily disentangle the contribution of maintenance and manipulation processes. We explored the effect of COMT genotype on the maintenance process using a Sternberg memory task varying the amount of information presented, in young and older homozygous carriers for the Val and Met alleles of the COMT gene. Although no clear behavioral difference was observed between groups, patterns of cerebral activity indicate difficulties for Met older individuals to maintain stable representations. These results will be discussed in terms of dopaminergic contribution to stability/flexibility of cognitive processes during aging. [less ▲]

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See detailAlgumas reflexões sobre o filme literário
Badir, Sémir ULg

Scientific conference (2016, September 02)

Gostaria, nesta palestra, de referir-me à maneira como se foram tecendo, no discurso do saber, os laços entre cinema e literatura, propondo certas pistas de reflexão a fim de desatar e reatar esses laços ... [more ▼]

Gostaria, nesta palestra, de referir-me à maneira como se foram tecendo, no discurso do saber, os laços entre cinema e literatura, propondo certas pistas de reflexão a fim de desatar e reatar esses laços. Para tanto, pode ser tomada, como ponto de partida, uma resposta dada pela escritora e cineasta Marguerite Duras durante uma entrevista na televisão em 1966: "Em geral, sou contra a adaptação do romance para o cinema, principalmente dos romances clássicos. (...) Imaginemos um jovem que nunca leu Moby Dick e que o leia depois de ter visto o filme. Para ele, o filme será um estorvo, sua relação com a narrativa será forçosamente impura, desde o início. É por isso que sou contra a adaptação das obras-primas para o cinema. Ela destrói, afasta, corrompe o fenômeno da leitura, que é um fenômeno importantíssimo, quando não o mais importante". [less ▲]

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See detailMacro- and near-mesoporous monoliths by medium internal phase emulsion polymerization: a systematic study
Mathieu, Kevin ULg; Jérôme, Christine ULg; Debuigne, Antoine ULg

in Polymer (2016), 99

The synthesis of a series of poly(ethylene oxide)-b-polystyrene copolymers with different block lengths was performed by radical addition fragmentation chain transfer. These amphiphilic copolymers were ... [more ▼]

The synthesis of a series of poly(ethylene oxide)-b-polystyrene copolymers with different block lengths was performed by radical addition fragmentation chain transfer. These amphiphilic copolymers were tested as stabilizers for water-in-oil medium internal phase emulsion (MIPE) templating polymerization and the formation of polyMIPEs with controlled morphology. Aside from the structure of the emulsion stabilizer, several parameters susceptible to influence the size of the cavities and the interconnectivity of the porous monoliths were probed including the choice of the comonomers, treatment of the emulsion by ultrasound, the use of controlled radical polymerization method for the network formation as well as interfacial initiation. Interconnected cellular monoliths were produced. The polymerization of the ultrasonicated water-in-ethylhexylacrylate/divinylbenzene MIPE notably led to near-mesoporous open-cell material. Mechanical properties and specific surface areas of the polyMIPEs were also investigated and discussed. [less ▲]

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See detailLe potentiel des blogues et des réseaux numériques dans l'apprentissage d'une langue étrangère
Vintila, Elena-Georgiana ULg

Conference (2016, September 02)

We selected two French foreign language textbooks published in Romania under the Ministry of Education in 2004 and 2005 by the same publishing house and we will analyze the modality of presentation of ... [more ▼]

We selected two French foreign language textbooks published in Romania under the Ministry of Education in 2004 and 2005 by the same publishing house and we will analyze the modality of presentation of grammar points offered by textbooks and selected blogs. For this analysis, we will focus on: the appearance of textbooks, respectively blogs, the presentation of the grammar point set analysis, types and number of exercises. In addition, we will try to see what socio-cultural values ​​are highlighted by the authors and how bloggers alter through publications. [less ▲]

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See detailImpact of high-wheat bran diet on sows’ microbiota, performances and progeny’s growth and health
Leblois, Julie ULg; Bindelle, Jérôme ULg; Dehareng, Frédéric et al

Conference (2016, September 02)

Finding alternatives to antimicrobial growth promoters is part of the goal of improving sustainability in pig production. Dietary fibres are considered as health-promoting substances acting on pigs’ ... [more ▼]

Finding alternatives to antimicrobial growth promoters is part of the goal of improving sustainability in pig production. Dietary fibres are considered as health-promoting substances acting on pigs’ microbiota. This study aimed to investigate whether the enrichment of sows’ diet with high levels of wheat bran (WB) could impact the performances of sows and piglets’ health. Seven sows were fed a control diet (CON) and 8 sows a WB diet from day 43 of gestation (WB 240 g/kg DM) until the end of the lactation period (WB 140 g/kg DM). Diets were formulated to be iso-energetic and iso-nitrogenous by changing the proportions of some ingredients. Faeces were sampled at different time points (before treatment, during treatment: in gestation and lactation) to determine microbiota composition (sequencing with Illumina MiSeq). Milk was sampled weekly to determine lactose, fat and protein concentration by mid-infrared technology and IgA and IgG contents by ELISA. Before weaning (d26-27), piglets were euthanized, intestinal contents and tissues sampled for further analyses. Zootechnical performances of sows and piglets were recorded. Statistical analyses were performed using the SAS MIXED procedure and repeated measurements. Treatment never impacted piglets’ weight (P=0.51). Sows’ ingestion during the lactation period was comparable between both treatments until the last 4 days of lactation where the percentage of target ingestion was significantly (P<0.001) lower for the WB (66%) compared to the CON group (89%). No effect on sows’ backfat and weight changes was observed. An increased abundance of Lactobacillus spp. in feces of the WB group was observed in gestation before and after diet change (8.8% vs 15.1% of total bacteria). However, for the overall genera changes between treatments, it only seems to occur for minor groups of bacteria. Milk protein, fat, IgG and IgA were not affected by treatment, but a time-effect (P<0.001) was observed while treatment impacted (P<0.05) lactose content. In conclusion, sows’ performances were not affected by the high WB diet and more research on the piglets’ samples is foreseen. [less ▲]

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See detailActivation de la coagulation par la Transition Epithélio-Mésenchymateuse: impact sur la colonisation métastatique
Bourcy, Morgane ULg

Doctoral thesis (2016)

Au cours de la cascade métastatique, des cellules tumorales quittent la tumeur primaire et envahissent le sang (Cellules Tumorales Circulantes, CTCs) pour former des métastases dans des organes ... [more ▼]

Au cours de la cascade métastatique, des cellules tumorales quittent la tumeur primaire et envahissent le sang (Cellules Tumorales Circulantes, CTCs) pour former des métastases dans des organes secondaires. Le processus métastatique est hautement sélectif et seule une faible proportion de CTCs survit dans la circulation et colonise les sites secondaires pour former des métastases. Les cellules tumorales subissent des changements phénotypiques qui leur procurent des propriétés migratoires et invasives ainsi que des capacités de survie accrue leur permettant de franchir ces différentes étapes. A ce jour, il est largement accepté que les processus de Transition Epithélio-Mésenchymateuse (TEM) sont impliqués dans cette plasticité cellulaire et participent à la libération et à la biologie des CTCs. Des données de la littérature indépendantes ainsi que des résultats du laboratoire suggèrent, par ailleurs, que les processus de coagulation pourraient favoriser les étapes précoces de la dissémination métastatique (survie, persistance, arrêt et extravasation). Au cours de ce travail de doctorat, nous avons examiné l’acquisition potentielle de propriétés pro-coagulantes par les CTCs dérivées d’une TEM impliquant l’expression du Facteur Tissulaire (FT), l’initiateur cellulaire clé de la cascade de coagulation. De telles propriétés coagulantes permettraient la formation d’une matrice de fibrine protectrice autour des CTCs favorisant, ainsi, leur survie dans la circulation sanguine et la colonisation métastatique. A l’aide de divers modèles cellulaires in vitro, nous avons montré que les processus de TEM sont associés à une expression accrue du FT et à des propriétés pro-coagulantes. Ensuite, nous avons fonctionnellement lié les processus de TEM à ces régulations en y impliquant des facteurs de transcription de la TEM, ZEB1 et Snail. De plus, en utilisant des modèles de métastases expérimentales, nous avons montré que l’axe TEM/FT/coagulation procure aux CTCs des propriétés de survie et des capacités de colonisation métastatique accrues. Enfin, nous avons apporté une validation clinique à ces résultats en observant des CTCs positives pour le FT et la vimentine, un marqueur mésenchymateux, dans le sang de patientes atteintes d’un cancer du sein métastatique. L’ensemble de nos résultats met en évidence un nouvel axe de régulation TEM/FT permettant une activation locale de la coagulation par les CTCs TEM+ favorisant la colonisation métastatique précoce. [less ▲]

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See detailLa voix de l'enseignant
Remacle, Angélique ULg

Conference given outside the academic context (2016)

Cette formation sur la voix destinée aux enseignants se veut théorique et pratique. Elle aborde les points suivants: 1) les bases d'anatomie et principes de fonctionnement de la voix, 2) les ... [more ▼]

Cette formation sur la voix destinée aux enseignants se veut théorique et pratique. Elle aborde les points suivants: 1) les bases d'anatomie et principes de fonctionnement de la voix, 2) les professionnels de la voix, 3) que faire quand la voix dysfonctionne, et 4) comment optimiser la voix? [less ▲]

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See detailChaotic Bohmian trajectories for stationary states
Cesa, Alexandre ULg; Martin, John ULg; Struyve, Ward

in Journal of Physics A: Mathematical and Theoretical (2016), 49

In Bohmian mechanics, the nodes of the wave function play an important role in the generation of chaos. However, so far, most of the attention has been on moving nodes; little is known about the ... [more ▼]

In Bohmian mechanics, the nodes of the wave function play an important role in the generation of chaos. However, so far, most of the attention has been on moving nodes; little is known about the possibility of chaos in the case of stationary nodes. We address this question by considering stationary states, which provide the simplest examples of wave functions with stationary nodes. We provide examples of stationary wave functions for which there is chaos, as demonstrated by numerical computations, for one particle moving in 3 spatial dimensions and for two and three entangled particles in two dimensions. Our conclusion is that the motion of the nodes is not necessary for the generation of chaos. What is important is the overall complexity of the wave function. That is, if the wave function, or rather its phase, has complex spatial variations, it will lead to complex Bohmian trajectories and hence to chaos. Another aspect of our work concerns the average Lyapunov exponent, which quantifies the overall amount of chaos. Since it is very hard to evaluate the average Lyapunov exponent analytically, which is often computed numerically, it is useful to have simple quantities that agree well with the average Lyapunov exponent. We investigate possible correlations with quantities such as the participation ratio and different measures of entanglement, for different systems and different families of stationary wave functions. We find that these quantities often tend to correlate to the amount of chaos. However, the correlation is not perfect, because, in particular, these measures do not depend on the form of the basis states used to expand the wave function, while the amount of chaos does. [less ▲]

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