Le Bas Research Articles

Case management in community mental health centers: Staffing considerations that account for client and agency context

Tailored, responsive behavioral health services received in community mental health centers are associated with healthy outcomes for children and youth and their families. The coordination of care and services, often provided by case managers, is imperative to maximize these benefits for children and families. Thus, staffing considerations of case managers within community mental health centers are a relevant concern for multiple stakeholders. This research and policy note begins with an overview of the types of case management employed in community mental health centers. Then, we present a research-informed, context-rich approach to identifying the number of case managers needed to serve children and youth in diverse community mental health centers. The proposed approach draws from a literature review by King, Meadows, and Le Bas (2004) that described seven factors pertinent for identifying the appropriate caseload for mental health case managers. Utilizing those seven factors and other considerations identified from the extant research, a practical and modifiable formula for staffing is presented that considers the unique and individualized demands of the center.

The multidirectionality of Romani identity in Damian Le Bas' The Stopping Places

The romanticised and stereotyped construction of the Romani people absorbed by mainstream society has contributed to the obliteration of their cultural complexity and their ensuing alienation. The present article analyses how the memoir The Stopping Places (2018), by the British Romani writer Damian Le Bas, makes a case for the borderlessness of his people. It is the main purpose of this study to underscore Romani identity as inherently multidirectional, hence allowing for a relational, intercultural dialogue aimed at transcending the long-standing Romani vs. non-Romani tension. For this purpose, Le Bas' network-like journey across some key stopping places is read as an endorsement of the synchronicity and interconnectedness characterising our present world. His narrative is an empowering attestation that foregrounds the fruitful interactions between the Roma and other cultures and sets the assumedly distrustful and protective Romani as an example of cultural flexibility.

The Passing of the Romani Body

Antiroma prejudice is among the most persistent and intense kinds of racial hatred in Europe. While criminal or demonic depictions of the Roma were created, their “blackness” was considered abhorrent, described as, for instance, yellowish and dirty, while their hair was always “shaggy” or curling “like vipers.” The “blackness” was believed to be an outcome of an uncivilized lifestyle, dirt, smoke from bonfires, or conscious creation – a picaresque camouflage. Romophobia or antiziganism have continued to rely on colour, visuality, and visibility of the body to exclude people by reason of race. The article discusses the strategy of passing which enables the Roma to survive in a racist environment or has been at times the only way to survive, as well as other subversive strategies of performing skin colour observed in the creative output of contemporary visual artists of Roma origin: Delaine Le Bas, Tamara Moyzes, Emilia Rigová and Kálmán Várady as well as creators and performers of Roma Armee and slammer Kristóf Horváth.

Book Review: The Stopping Places: a journey through Gypsy Britain by Damian Le Bas

Book Review: The Stopping Places: a journey through Gypsy Britain by Damian Le Bas

Bar Migrations on a Macrotidal Ebb Delta over a Period of Six Years Using Lidar Survey

Pellerin Le Bas, X. and Levoy, F., 2018. Bar migrations on a macrotidal ebb delta over a period of six years using LiDAR survey. In: Shim, J.-S.; Chun, I., and Lim, H.S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of Coastal Research, Special Issue No. 85, pp. 146–150. Coconut Creek (Florida), ISSN 0749-0208.The migration rates of two swash bars on an ebb delta are studied in a macrotidal environment. A dataset of 12 LiDAR surveys, from 2011 to 2017 is used to compute the movement of the swash bar crests using Digital Shoreline Analysis System (DSAS) version 4.3. Hydrodynamic data are acquired near the ebb-tidal delta during the same period. The relationship between bar migration rate and wave energy flux is analyzed. The correlation is high (r2 = 0.71), but a specific migration rate of the two bars weaken this result. Furthermore, the two swash bars have two different behaviors under the same hydrodynamic conditions. Other analyses are conducted concerning the relationships between the migration of the bar and its volume or the water depth. The correlations are too weak to explain the different behaviors of the bars. Another parameter is highlighted, the number of swash bars in the immediate vicinity of the two bars.

Trois réflexions pour situer l’analyse psycho-criminologique française

While the psycho-criminological serial approach is experimented within the French Prison Administration, it is worth presenting briefly this approach, its theories, models and practices, as well as its still non-existent position alongside the rehabilitative models “Risk-Need-Receptivity” (Bonta et Andrews, 2007) and “Good Lives Model” (Ward et Gannon, 2006). Our reflection is illustrated in three analyses : (i) the situation of French psycho-criminological analysis, (ii) the concretization of French psycho-criminological analysis via the serial bioscopic approach, and (iii) the link between the psycho-criminological analysis and the main international rehabilitative models. Firstly, the French psycho-criminological serial approach shifts the analysis focus to the study of situational dynamics rather than the study of the chronological and monographic life course (Villerbu et al., 2009 ; LeBas, 2011). Psycho-criminology (dynamical) here is a science of psychic situations and their development (Hirschelmann, 2013). The act would therefore not be an existential rupture, but a subjective marker of the subject's life. Secondly, French psycho-criminology finds a practical methodology in the serial bioscopic approach. The concept of “seriality” of psycho-criminalistic investigation (Ressler et al., 1986, Douglas et al., 1992) is rethought in a dynamic approach to criminal carriers and offense that lead us to question every repetition in the life course of the subject (Le Bas, 2011). From a methodological point of view and with retrospective and prospective analogies, it is necessary to analyze the various courses of the subject (family and conjugal, school and professional, health, judiciary, institutional, insertion and probation, and possibly his sexuality and his hobbies), which leads to repetitions, similarities, substitutions and cyclicities. While similarities with both De Greeff's (1956) trajectory analysis and Agnew's (1991, 2006) concept of “storyline” (or “event lines”) can be found, bioscopic-serial analysis combines the endogenous factors of the subject (emotional, sensory, cognitive, memorial) and environmental factors (situational, relational, social) from the subjective and interpretive positioning of the subject in action. Two axes organize the layout of information (Hirschelmann, 2016), the temporal dimension and the spatial dimension (e.g. family, work, Judiciary) of the subject's life course. The data analysis aims at linking and retracing, in what makes an event for the individual, the significant random events that have punctuated the life of the subject in order to induce him to work on his forces and vulnerabilities. Thirdly, although the French serial psycho-criminological approach shows an interest in the analysis of various offense-related fields (Hirschelmann, 2013), it is still difficult to grasp, because of the lack of concrete and generalizable tools. Above all, it does not seem to exist and question the main international rehabilitative models such as the “Risk-Needs-Receptivity” model (Bonta et Andrews, 2007) and the “Good Lives Model” (Ward et Gannon, 2006), both referring to the theories and practices of behavioral, cognitive and emotional therapies (Cottraux, 2011).

Geochemistry of late miocene-pleistocene basalts in the Phu Quy island area (East Vietnam Sea): Implication for mantle source feature and melt generation

Geochemistry of late miocene-pleistocene basalts in the Phu Quy island area (East Vietnam Sea): Implication for mantle source feature and melt generation

Magma source feature and eruption age of volcanic rocks in the Tram Tau district, Tu Le Basin

Magma source feature and eruption age of volcanic rocks in the Tram Tau district, Tu Le Basin

On the solubility of non-ionic organic solutes in seawater

Abstract Given the solubilities of non-ionic organic solutes in water, their solubilities in seawater are obtained by correlation expressions involving two descriptors for the constituent ions (or salts) of seawater and two descriptors of the solutes. The former are the standard partial molar volumes and the intrinsic molar volumes and the latter are the molar volume (the Le Bas variant of it) and either the Hildebrand solubility parameter δ H or the Kamlet–Taft solvatochromic π*.

A high amplitude non-contact acoustic source: from a proof of concept to the understanding of the mechanisms involved

Recently, the preliminary design of a high-amplitude, non-contact acoustic source was proposed for nondestructive testing applications [Le Bas et al., J. Acoust. Soc. Am. 134, EL52 (2013)]. The design is based on the principle of time reversal, a process to focus energy at a point in space. In the present work, the main physical mechanisms involved in the operation of this device are examined numerically using the finite-element (FE) method. First, a three-dimensional FE model of the device is validated in the frequency domain against experimental data. Subsequently, two-dimensional transient simulations are used to conduct a parametric study on the effect of wall thickness and transducer density on the efficiency of the device. Last, a time reversal numerical experiment is presented. Results from this study can be used to design a more efficient non-contact source. [Work supported by Institutional Support (LDRD) at the Los Alamos National Laboratory.]

Prolific Inventor Productivity and Mobility: A Western/Asian com-parison. Evidence from US Patent Data for 12 Countries

This paper provides new insights into the role of individual inventors in the innovation process. Individuals are central in this creative process because innovation is not simply a product of firms and organizations; it requires individual creativity (Rothaermel and Hess, 2007). We focus our analysis on prolific inventors (a rich sub category of inventors) because they contribute so hugely to national invention totals (Le Bas et al., 2010) and tend to produce inventions that have more economic value (Gambardella et al., 2005; Gay et al., 2008). Converging empirical evidence has established the significance of prolific inventors (Ernst et al., 2000). Previous studies of prolific (or “key”) inventors have focused more on the firms in which they work or on the industries in which the firms operate. Narin and Breitzman’s (1995) seminal work on the topic is based on an analysis of only four firms in a single sector and a recent paper by Pilkington et al. (2009) uses only two firms. In contrast to these studies on small samples, we use a very large data set which includes thousands of inventors in thousands of firms from several countries.

The Victorian Driving Risk in Young People Study (Vic DRYP)

Event Abstract Back to Event The Victorian Driving Risk in Young People Study (Vic DRYP) Genevieve Le Bas1*, Julie Stout1 and Melissa A. Hughes1 1 Monash University, School of Psychology and Psychiatry, Australia Background Young drivers, aged 18 to 25, pose a significant risk on the roads, with motor-vehicle accidents a significant contribution to death in this age group. Young drivers’ risk may be attributed to a range of factors including inexperience, and developmental factors such as immaturity of the prefrontal cortex leading to risky decision making. This study investigated whether screening of cognitive risk factors using an online tool would be sufficiently sensitive to identify driving risk in young people. We predicted that compared to lower risk drivers, higher risk drivers would demonstrate riskier performance on behavioural tasks and report more risky personality characteristics. Methods Young Victorian drivers aged 18-25 (n =116) completed an online assessment of cognitive risk, with behavioural tasks including the Iowa Gambling Task and the Balloon Analog Risk Task, as well as self-report questionnaires including the Impulsivity subscale of Eysenck’s IVE Questionnaire, and the Harm Avoidance subscale of the Multidimensional Personality Questionnaire. Participants were classified into lower or higher risk driving groups based on questionnaires relating to driving behaviour and driving record. Results Compared to lower risk drivers (n = 51), higher risk drivers (n = 65) reported higher levels of impulsivity (p less than .001) and fearlessness (p = .001). No significant differences were found between the driving groups for the IGT (p = .985) or BART (p = .285). Discussion Our findings indicate that self-reported risky driving behaviour is associated with self-reported risky characteristics, such as impulsivity and fearlessness. Although the behavioural tasks were not significantly related to self-reported driving behaviour, it may be that these tasks correlate with naturalistic driving behaviour, an avenue for further investigation. Identifying cognitive characteristics in young drivers that can predict risky driving behaviour will aid development of strategies to improve road safety in youth at the highest crash risk. Further findings and implications will be discussed. Keywords: driving, executive functions, Iowa Gambling Task (IGT), impulsivity, Prefrontal Cortex Conference: ACNS-2013 Australasian Cognitive Neuroscience Society Conference, Clayton, Melbourne, Australia, 28 Nov - 1 Dec, 2013. Presentation Type: Poster Topic: Executive Processes Citation: Le Bas G, Stout J and Hughes MA (2013). The Victorian Driving Risk in Young People Study (Vic DRYP). Conference Abstract: ACNS-2013 Australasian Cognitive Neuroscience Society Conference. doi: 10.3389/conf.fnhum.2013.212.00078 Copyright: The abstracts in this collection have not been subject to any Frontiers peer review or checks, and are not endorsed by Frontiers. They are made available through the Frontiers publishing platform as a service to conference organizers and presenters. The copyright in the individual abstracts is owned by the author of each abstract or his/her employer unless otherwise stated. Each abstract, as well as the collection of abstracts, are published under a Creative Commons CC-BY 4.0 (attribution) licence (https://creativecommons.org/licenses/by/4.0/) and may thus be reproduced, translated, adapted and be the subject of derivative works provided the authors and Frontiers are attributed. For Frontiers’ terms and conditions please see https://www.frontiersin.org/legal/terms-and-conditions. Received: 15 Oct 2013; Published Online: 25 Nov 2013. * Correspondence: Ms. Genevieve Le Bas, Monash University, School of Psychology and Psychiatry, Clayton, Victoria, 3800, Australia, gale9@student.monash.edu Login Required This action requires you to be registered with Frontiers and logged in. To register or login click here. Abstract Info Abstract The Authors in Frontiers Genevieve Le Bas Julie Stout Melissa A Hughes Google Genevieve Le Bas Julie Stout Melissa A Hughes Google Scholar Genevieve Le Bas Julie Stout Melissa A Hughes PubMed Genevieve Le Bas Julie Stout Melissa A Hughes Related Article in Frontiers Google Scholar PubMed Abstract Close Back to top Javascript is disabled. Please enable Javascript in your browser settings in order to see all the content on this page.

La restauration des boiseries dorées de l’hôtel Le Bas de Montargis

Dans le cadre de la rénovation des salles du xviiie siècle du département des Objets d’art, le musée du Louvre a fait appel au C2RMF afin de restaurer les boiseries sculptées de l’hôtel particulier Le Bas de Montargis, construit par Jules Hardouin-Mansart vers 1705. La restauration, qui a nécessité plus d’un an de travail, a porté aussi bien sur la structure que sur la surface dorée des boiseries : la menuiserie a été révisée et la dorure a fait l’objet d’un programme complexe de dégagement, nettoyage et harmonisation. L’ampleur de l’étude préalable et de la restauration relève d’une approche minutieuse qui s’inscrit dans l’évolution du regard posé sur les arts décoratifs et les grands décors.

Adsorption of cadmium on different granulometric soil fractions: Influence of organic matter and temperature

Kinetic and thermodynamic studies are carried out at low initial cadmium concentration on a soil sample extracted from Aspach le Bas in Eastern France. It can be concluded from kinetic experiments that the implied process is of pseudo‐second order. Rate constants, relaxation times and activation energy are calculated. The energy value determined in this study (40kJmol−1) shows that the process implies both physisorption and chemisorption.The influence of soil particle size (i.e. of the initial soil and its different fractions: sand, coarse silt, fine silt and clay), organic matter and temperature on the cadmium sorption capacity is also investigated. The Langmuir and the Dubinin–Radushkevich models are chosen to analyze these thermodynamic experiments. The isotherms have revealed that the Cd2+ sorption is enhanced by increasing temperature and organic matter for all the fraction but the sand (in this last case, no temperature or organic matter have changed Cd2+ sorption). Thermodynamics parameters (∆G, ∆H and ∆S) are determined from experimental isotherms fitting following three methods used in the literature. It can be deduced from the different results that adsorption (exo or endothermic according to the fraction). Finally, a mean free energy of adsorption is obtained via Dubinin–Radushkevich model and confirms that the two types of sorption (physical and chemical) act in the whole process.

Truthing gap: imagining a relational geography of the uninhabitable

During 2008–10, I was the Artist in Residence of the Leverhulme Trust, at the National Oceanography Centre, (NOCS), Southampton, working with sonar geophysicist Dr Tim Le Bas, exploring methods of seabed mapping and undersea survey. During this period I documented aspects of oceanographic study, learnt processes used by my scientific colleagues, conducted performative interventions and made works in direct response to the context of NOCS. The work produced was shown at an exhibition at University of Wales Institute, Cardiff in 2009 and will be developed into a larger exhibition at the John Hansard Gallery, Southampton in 2012. This article constitutes both a re-presentation of my primary research and a reflection on the methods I adopted to address the issues raised by my inquiries. Works produced are both referred to directly and represented via supplementary documentation.

Dynamic competition between plug-in hybrid and hydrogen fuel cell vehicles for personal transportation

This article addresses the issue of the diffusion of hydrogen cars in the market, particularly the competition with electric cars for the replacement of conventional vehicles. Using the multi-technological competition model developed by Le Bas and Baron-Sylvester’s (Diffusion technologique non binaire et schéma épidémiologique. Une reconsidération. Economie Appliquée 1995; tome XLVIII(3):71–101), it is shown that the early deployment of plug-in hybrid vehicles—the only electric technology which can compete with fuel cell cars in the multipurpose vehicle field—risks closing the market for hydrogen in the future. Moreover, the advent of the hydrogen vehicle depends on the rapid advancements in fuel cell technologies, as well as on the existence of an infrastructure with a sufficient coverage.

Dynamic Cerebral Autoregulation and Monitoring Cerebral Perfusion

Cerebral autoregulation (CA) describes the capability of the brain to maintain its flow as relatively stable over a wide rage of mean arterial pressures (MAPs), for example, from 60 to 150 mm Hg. Because the brain is encompassed in the skull, CA is vital for preventing cerebral edema and hemorrhage, as illustrated in some patients experiencing acute liver failure.1 Also, CA counteracts the effect on cerebral blood flow (CBF) of a reduction in MAP in response to, for example, hemorrhage or a change in body position. Yet, when rising from a supine or seated position, one sometimes experiences symptoms indicative of a reduced CBF, like blurred vision.2 Thus, CA is of general clinical interest. For example, diabetic patients have increased risk of developing ischemic or hemorrhagic stroke, and in some diabetic patients CA is affected. Evidence for CA was provided in the 1930s when Fog,3 through a cranial window, observed the pial artery reaction to manipulation of MAP. For humans, CBF was measured with introduction of the method of Kety-Schmidt in 1948,4 and it was used in 1954 by Finnerty et al5 to determine cerebral hemodynamics of the ischemic brain after an acute reduction in MAP in attempt to define what now would be considered the lower limit of CA. However, it was the review by Lassen6 that introduced the concept of CA by plotting CBF against MAP to illustrate the relative stability of CBF over a wide range of blood pressure. Also, the lower and upper limits of CA were identified by a decrease in CBF at a low MAP and an increase …

Functional evaluation of PTF prediction uncertainty: An application at hillslope scale

This study presents a methodology to assess uncertainties resulting from the use of pedotransfer functions (PTFs) when soil water budget is modelled at a hillslope scale. Two sources of uncertainty are examined: (i) errors in the assessment of the soil physical and chemical properties at unsampled locations, as related to the spatial spacing of the sample measurements across the entire study area, and (ii) errors associated to the PTF relations and parameters. This methodology is applied to an experimental hillslope in Southern Italy, where an intensive field campaign has been conducted to gather several soil physical and chemical properties and soil hydraulic properties. A sequential Gaussian simulation algorithm is used to generate multiple equally probable images of PTF input soil data, consistent with the estimated spatial structure and conditioned to the measured soil core properties. Two PTFs commonly used in Europe, Vereecken's PTF [Vereecken, H., Diels, J., van Orshoven, J., Feyen, J., Bouma, J., 1992. Functional evaluation of pedotransfer functions for the estimation of soil hydraulic properties. Soil Sci. Soc. Am. J. 56, 1371–1378] and HYPRES PTF [Wösten, J.H.M., Lilly, A., Nemes, A., Le Bas, C., 1999. Development and use of a database of hydraulic properties of European soils. Geoderma 90, 169–185] are applied to predict the soil hydraulic properties, which in turn are employed into a soil–vegetation–atmosphere model to evaluate the propagated uncertainty in simulated target variables, such as evaporation, transpiration and root zone soil water content variation during a wet-to-dry transition season. The outcomes of this case study suggest that accurate estimates of transpiration and soil water storage variation at the hillslope scale are obtained even when PTF input data are collected with a relatively coarse sampling strategy. The examined PTFs show worse level of performance with respect to the simulated evaporation. The simulated evaporation is much more affected by the PTF model error than by the input data error. A major implication of these results is that if one would reduce the prediction uncertainty in simulated evaporation, the PTF model structure has to be improved prior of reducing the uncertainty into the PTF input data.

Uncertainty in predicting soil hydraulic properties at the hillslope scale with indirect methods

Summary Several hydrological applications require the characterisation of the soil hydraulic properties at large spatial scales. Pedotransfer functions (PTFs) are being developed as simplified methods to estimate soil hydraulic properties as an alternative to direct measurements, which are unfeasible for most practical circumstances. The objective of this study is to quantify the uncertainty in PTFs spatial predictions at the hillslope scale as related to the sampling density, due to: (i) the error in estimated soil physico-chemical properties and (ii) PTF model error. The analysis is carried out on a 2-km-long experimental hillslope in South Italy. The method adopted is based on a stochastic generation of patterns of soil variables using sequential Gaussian simulation, conditioned to the observed sample data. The following PTFs are applied: Vereecken’s PTF [Vereecken, H., Diels, J., van Orshoven, J., Feyen, J., Bouma, J., 1992. Functional evaluation of pedotransfer functions for the estimation of soil hydraulic properties. Soil Sci. Soc. Am. J. 56, 1371–1378] and HYPRES PTF [Wosten, J.H.M., Lilly, A., Nemes, A., Le Bas, C., 1999. Development and use of a database of hydraulic properties of European soils. Geoderma 90, 169–185]. The two PTFs estimate reliably the soil water retention characteristic even for a relatively coarse sampling resolution, with prediction uncertainties comparable to the uncertainties in direct laboratory or field measurements. The uncertainty of soil water retention prediction due to the model error is as much as or more significant than the uncertainty associated with the estimated input, even for a relatively coarse sampling resolution. Prediction uncertainties are much more important when PTF are applied to estimate the saturated hydraulic conductivity. In this case model error dominates the overall prediction uncertainties, making negligible the effect of the input error.

Observations of high-frequency harmonic tremor in Fogo, Cape Verde Islands

We report observations of high-frequency (HF) volcanic tremor, with spectral peaks in the band 5–20 Hz, recorded in Fogo Island, Cape Verde archipelago. Several occurrences are characterized by regularly spaced spectral peaks, but the fundamental frequency is missing. The signal is strong enough to be weakly detected on the southern islands of the archipelago, at distances of 20, 80 and 120 km from Fogo. This widespread detection of the HF tremor suggests that the propagation of the energy is made as T-waves propagating in the ocean sound channel. After correcting for site effects, the spatial pattern of amplitudes in Fogo and Brava Islands clearly indicates an offshore source. Active seamounts recently discovered in the vicinity of Fogo and Brava Islands [Hansteen, T.H., Grevemeyer, I., Hanel, K., Kraus, G., Schneider, J., Masson, D.G., Le Bas, T., Faria, B., 2006. Seamounts at the Cape Verde Islands: the geosphere–hydrosphere–biosphere connection, Seamount Biogeosciences Network, Workshop volume, La Jolla, March 24–25, 2006, 27–29.] are proposed to be the source of the HF tremor.