Miracle-dz/UniFAR-FTUs huggingface dataset:
Les acquisitions scolaires de l'élève au CP : Les origines des différences ?

Las adquisiciones escolares del alumno en el primer ano de EGB. Los origenes de las diferencias. - Relata este articulo una evaluacion de una accion pedagogica en « zona de educacion priontana ». Que sucede en ciertas clases de primer ano de EGB. Al lado de las variables individuates « clasicas », el autor pone de relieve variables colectivas tales cuales la heterogeneidad de la clase, asi como la existencia de « efectos-maestros » muy importantes que dejan sin respuesta muchas interrogaciones.
Run-Time Reconfiguration for a Reconfigurable Algorithmic Trading Engine

In this paper we present an analysis of using run-time reconfiguration of reconfigurable hardware to modify trading algorithms during use. This provides flexibility in algorithm design, enabling the implementation to be reactive to changes in market conditions, increasing in performance. We study what can be achieved to reduce performance loss in algorithms while reconfiguration takes place, such as buffering information during this time. Our results show our average partial reconfiguration time is 0.002091 seconds, using historic highest market data rates would result in about 5,000 messages being missed or require buffering. This is the worst case scenario, normally the system would only require a fraction of messages. The reconfiguration time is acceptable if it is under the required limit by the user to prevent business performance suffering.
Anthropomorphism of Robotic Forms: A Response to Affordances?

Participants rated robotic forms on three scales: perceived aggression, intelligence, and animation. The robot bodies varied along five dimensions: Types of edges (beveled or squared), method of movement (wheels, legs, spider legs, or treads), number of movement generators (2 or 4), body position (upright or down), and presence of arms (present or absent). Across ratings, movement method and presence of arms were the strongest predictors of participant perceptions. Legs and arms, both human characteristics, were associated with more positive attributions. Minimal affective characteristics, as displayed by the body design, are important in user perceptions of use and ability.
Age Prediction from Skeletal Indicators using Computational Intelligence Methods

This paper presents the work of age prediction of human being s from their skeletal indicators using computational intelligence methods, such as f eedforward neural networks, learning vector quantization (LVQ) and group of adaptive models evolution ( GAME). The anthropological data set we have performed our experiments on, contains a lot of noise, w hich is characteristic feature of almost all data collected by observations. Goal of this work is to get th best possible results of the age prediction on such noisy data and to compare the results of particular me thods.
School science and its controversies; or, whatever happened to scientific literacy?

The 1980s saw the rise of the public understanding of science, as a movement and as a research field. The decade also saw the goal of K-12 science instruction reoriented toward the promotion of scientific literacy for all students. This paper explores the subsequent relationship of these two movements. It examines debates over K-12 science curricular reform, with particular focus on “civic scientific literacy,” the introduction of science, technology, and society (STS) issues into classrooms, and the gradual retreat from STS-oriented reforms. It discusses how those debates may have been influenced by findings from the public understanding of science, and argues that educational debates themselves provide an important resource for probing larger issues of public understanding.
Continuous Calculation of Intratracheal Pressure in Tracheally Intubated Patients

Background:Intratracheal pressure (Ptrach) should be the basis for analysis of lung mechanics. If measured at all, Ptrach is usually assessed by introducing a catheter into the trachea via the lumen of the endotracheal tube (ETT). The authors propose a computer-assisted method for calculating Ptrach on a point-by-point basis by subtracting the flow-dependent pressure drop ΔPETT(&OV0312;) across the ETT from the airway pressure (Paw), continuously measured at the proximal end of the ETT. Methods:The authors measured the pressure-flow relationship of adult endotracheal tubes with different diameters (ID, 7–9 mm) at different lengths and of tracheostomy tubes (ID, 8–10 mm) in the laboratory. The coefficients of an approximation equation were fitted to the measured pressure-flow curves separately for inspiration and expiration. In 15 tracheally intubated patients under volume-controlled ventilation and spontaneous breathing, the calculated Ptrach was compared with the measured Ptrach. Results:The authors present the coefficients of the “nonlinear approximation”: ΔPETT = K1 · &OV0312;K2, with ΔPETT being the pressure drop across the ETT and K1 and K2 being the coefficients relating &OV0312; to ΔPETT. An important result was an inspiration/expiration asymmetry: the pressure drop caused by the inspiratory flow exceeds that of the expiratory flow. A complete description of the pressure-flow relationship of an ETT, therefore, requires a set of four coefficients: K1I, K2I, K1E, and K2E. The reason for this asymmetry is the abrupt sectional change between ETT and trachea and the asymmetric shape of the swivel connector. Comparison of calculated and measured Ptrach in patients gives a correspondence within ± 1 cmH2O (mean limits of agreement). The mean root-mean-square (rms) deviation is 0.55 cmH2O. Conclusions:Ptrach can be monitored by combining our ETT coefficients and the flow and airway pressure continuously measured at the proximal end of the ETT.
Commuting difference operators with polynomial eigenfunctions

We present explicit generators of an algebra of commuting difference operators with trigonometric coefficients. The operators are simultaneously diagonalized by recently discovered q-polynomials (viz. Koornwinder's multivariable generalization of the Askey-Wilson polynomials). From the viewpoint of physics the algebra can be interpreted as consisting of the quantum integrals of a novel difference-type integrable sytem. This system generalizes the Calogero-Moser systems associated with non-exceptional root systems.
Workload Characterization of Java Server Applications on Two PowerPC Processors

Java has become fairly popular on commercial servers in recent years. However, the behavior of Java server applications has not been studied extensively. We characterize two Java server benchmarks, SPECjbb2000 and VolanoMark 2.1. 2, on two IBM PowerPC architectures, the RS64-III and the POWER3-II, and compare them to more traditional workloads as represented by selected benchmarks from SPECint2000. We find that our Java server benchmarks have generally the same characteristics on both platforms: in particular, high instruction cache, ITLB, and BTAC (Branch Target Address Cache) miss rates. These benchmarks also exhibit high L2 miss rates due mostly to data loads. Instruction cache and L2 misses are seen to be the primary contributors to CPI.
Influence of the distribution function shape and the band structure on impact ionization modeling

Accurate modeling of impact ionization is a critical issue for deep submicron devices. All established analytical models for the distribution function based on the local electric field or on the local average carrier energy give rather poor results. Therefore, theoretically sound microscopic scattering rates cannot be properly transformed into accurate macroscopic models. We show that by accounting for the average square energy an accurate analytical description of the distribution function can be given. Together with a proper band structure model the analytical distribution function can then be used to evaluate microscopic models in a macroscopic device simulator. The present model is accurate for bulk and sub 100 nm feature size devices and involves only local quantities, which makes it a good choice for inclusion in conventional device simulators.
Structured learning with latent trees: a joint approach to coreference resolution

Nous explorons differentes manieres de definir des systemes de resolution de la coreference utilisant des techniques d'apprentissage statistique structure. Nous mettons au point des modeles supervises qui apprennent a construire des classes d'equivalence de coreference a partir de texte brut : notre principal objectif est de definir des modeles capables de traiter les documents de maniere globale et structuree afin de creer des sorties coherentes Nos modeles sont entraines et evalues sur la partie anglaise du corpus de la Shared Task CoNLL-2012. Nous effectuons des comparaisons detaillees de differentes versions des modeles afin de mettre au point un systeme complet de resolution de la coreference.
Novel spectral methods for built-in self-test in a system-on-a-chip environment

This new method of built-in self-test (BIST) for sequential cores on a system-on-a-chip (SOC) generates test patterns using a real-time program that runs on an embedded processor. Alternatively, the same program can be run on an external low-cost tester. This program generates patterns using circuit-specific spectral information in the form of one or more Hadamard coefficients. The coefficients are extracted from high fault-coverage compacted pattern sets. When an embedded processor is available on SOC, the overhead is negligible. Also, sequential cores are tested in the functional mode, avoiding activation of nonfunctional timing paths. We present experimental results to show that for hard to test circuits, with any given test time, spectral patterns provide significantly higher fault coverage than weighted-random patterns.
A fuzzy rule-based system utilizing differential evolution with an application in vis-NIR soil spectroscopy

In this paper, we present DECO3RUM (Differential Evolution based Cooperative and Competing learning of Compact Rule-based Models), an evolutionary Mamdani Fuzzy Rule-based System for modeling problems. DECO3RUM follows the Genetic Cooperative Competitive Learning approach, and utilizes the Differential Evolution algorithm as its learning algorithm. A real world high dimensional dataset from the domain of soil science was considered to evaluate the ability of DECO3RUM to handle Big Data problems, where the number of features is significant. DECO3RUM was shown to statistically out-perform the most prevailing methodology used in soil spectroscopy, namely the Partial Least Squares Regression algorithm.
Active and reactive power control of DFIG using PI and DPC controllers

This work presents the control of active and reactive power, regardless, of DFIG (Double Field Induction Generator) typically used in electrical energy production and particularly in wind turbines. The machine is connected to a public network and operates as a generator. Its rotor is powered by a voltage of two-level inverter. We offer the control of the DFIG by two strategies, the first is based on the use of conventional PI controller and the second is based on using DPC (Direct Power Control). In the last we will finish by a comparison of performances obtained by the two control strategies.
Negotiating individual accommodation in higher education

This article discusses ways of understanding the processes involved when disabled students negotiate accessibility in higher education. Despite legislation for universal design and political aims to increase the number of disabled students, individuals themselves have to take initiatives to obtain needed reasonable adjustments. Findings are drawn from a study of everyday lives of disabled students. Research methods employed were: time geographic diaries, in-depth interviews and focus groups. Findings include issues of disclosure and stigma management, supports provided with a twist of ambiguity, and experiences of combatting for individual accommodation. The process of negotiation is discussed in terms of traditions in higher education, the burden individual accommodation in practice place upon disabled students, and the need for changes based on universal design.
Hemostasis and Coagulation Following Uncontrolled Hemorrhage and Resuscitation with Polymerized Hemoglobin Based Oxygen Carrier (HBOC-201) in Swine

Abstract : Coagulopathy are common complications of hemorrhagic shock (HS). Recently HBOC-201, a novel fluid with oxygen carrying capacity, has been proposed for hypotensive resuscitation and stabilization of HS patients. Coagulation and hemostasis have been studied in a swine uncontrolled hemorrhage model comparing HBOC-201 to standard resuscitation fluids. Yucatan mini-pigs (n=24) underwent uncontrolled hemorrhage by laceration and crush injury of a liver lobe. These animals were either non-resuscitated or resuscitated with HBOC-201 or buffered hydroxyethyl starch (HEX) during the 4 hr period following HS, after which they received full hospital care up to 72 hr. In addition to in-vivo parameters (blood loss and in vivo bleeding time (BT)), changes in hemostasis were evaluated by laboratory assays (coagulation (PT, PTT, fibrinogen), thromboelastography (TEG), and closure (in vitro bleeding) time (PFA-CT). Lung histopathology was evaluated for evidence of adverse microvascular thrombogenic pathologic change.
Towards software configuration management for unified models

Change occurs throughout the software lifecycle. Software Configuration Management tools and techniques provide the foundation to effectively control change. With a growing number of approaches combining models from different domains into one unified, integrated model, ([15], [12]), there is also an emerging demand for SCM techniques and methods that are able to support these unified models. Traditional SCM systems operating on the abstraction of a filesystem and managing change at the granularity of textual lines are not adequate for these requirements. We propose a novel approach to SCM for unified models combining product versioning, operation-based deltas and change packages. To demonstrate feasibility we have implemented our approach in Sysiphus a suite of tools for collaborating over Software Engineering artifacts represented in a unified model.
Giftedness and Flexibility on a Mathematical Set-Breaking Task

Accuracy, speed, flexibility, and metacognitive knowledge were studied in 19 school-identified gifted and 11 average ability 11-year-old students. The most intet-esting result was a significant three-way interaction among giftedness, speed, and flexibility, with metacognitive knowledge as the criterion. Regardless of speed, rigid (inflexible) gifted children had less metacognitive knowledge than flexible gifted children. Flexible gifted children who solved the problems quickly had more metacognitive knowledge than those who solved them slowly. Among average children, rigid subjects had less metacognitive knowledge, regardless of speed, and flexible average children showed more metacognitive knowledge when they were slower on the problems.
Mothers and work–life balance: exploring the contradictions and complexities involved in work–family negotiation

This article presents data from a project exploring women's experiences of work and care. It focuses primarily on work–life balance as a problematic concept. Social and economic transformations across advanced post-industrial economies have resulted in concerns about how individuals manage their lives across the two spheres of work and family and achieve a work–life balance. Governments across the European Union have introduced various measures to address how families effectively combine care with paid work. Research within this area has tended to focus on work–life balance as an objective concept, which implies a static and fixed state fulfilled by particular criteria and measured quantitatively. Qualitative research on women's experiences reveals work–life balance as a fluctuating and intangible process. This article highlights the subjective and variable nature of work–life balance and questions taken-for-granted assumptions, exploring problems of definition and the differential coping strategies which women employ when negotiating the boundaries between work and family.
Convergence of adaptive linear stochastic differential games: Nonzero-sum case

Complex systems with components or subsystems having game-like relationships are probably the most complex ones that we encounter everyday. Much progress has been made over the past half century on differential games which are used as a tool in modeling conflicts in the context of dynamic systems, however, almost all of the current literature assume that both the parameters and the structure of the game are known to the players. Since in many practical situations, the players may have unknown parameters, which motivate us to investigate a class of two-player zero-sum linear-quadratic stochastic differential games in [1] with unknown parameters. In this paper, we will further consider a class of two-player nonzero-sum linear quadratic stochastic differential games, with unknown parameters to both players. We will design adaptive strategies and prove that they will converge to the optimal ones under some natural conditions on the true parameters of the system.
Towards a methodology for automatic identification of hypernyms in the definitions of large-scale dictionary

The purpose of this paper is to identify automatically hypernyms for dictionary entries by exploring their definitions. In order to do this, we propose a weighting methodology that lets us assign to each lexeme a weight in a definition. This fact allows us to predict that lexemes with the highest weight are the closest hypernyms of the defined lexeme in the dictionary. The extracted semantic relation is-a is used for the automatic construction of a thesaurus for image indexing and retrieval. We conclude the paper by showing some experimental results to validate our method and by presenting our methodology of automatic thesaurus construction.
Proceedings of Modeling mesoscale pattern of mid-latitude convective raincells using weather radar measurements

The knowledge of the statistical characteristics of the rain structures is very important in many fields going from hydrology to telecommunication (TLC) applications. For hydrological purposes, the study of convective rain systems is usually finalized to the flood forecasting of river catchments and to the nowcasting of the evolution of extreme precipitation to support civil protection activities (Capsoni and D’Amico, 2004). For TLC applications, new high-frequency terrestrial and satellite systems (e.g., from Ka band to V band), can be strongly affected in their performances by the presence of a raincell or a cluster of cells so their experimental characterization can enhance the channel design (Feral et al. 2000).
Is flashbulb memory a special instance of source memory? Evidence from older adults

Flashbulb memories (FMs) are vivid, stable memories for the reception of arousing, consequential news. Although such memories have been found in people of all ages, in the only examination of age differences to date, Cohen, Conway, and Maylor (1994) reported that older adults were less likely than young adults to experience a FM. We hypothesised that FM would be impaired in older adults with reduced frontal lobe (FL) function. To test this hypothesis, we asked older adults, who had been characterised according to FL function, to recall details of the moment that they first heard the news about the deaths of Princess Diana and Mother Teresa. Long-term retention was tested 6 months later. Details concerning the reception of the news about Princess Diana's death were retained better than those associated with Mother Teresa's death. Importantly, there was no evidence that memory for these contextual details was related to FL function. A measure of medial temporal lobe function, derived from neuropsychological tests of episodic memory, was also not associated with memory for the reception events, although it was associated with memory for the details of an everyday autobiographical event. We speculated that emotionally arousing autobiographical memories may be qualitatively different from everyday memories and may involve the amygdala.
Simulation Framework for Research of “ Intelligent ” Reconnaissance Systems

This paper describes a modular simulation framework that can be used for testing of “intelligent” reconnaissance sensor systems in various environments, weather conditions and time of day. The simulation framework is called MSSLab (Multi-Sensor Simulation Lab) and it allows for high fidelity sensor data simulation. One objective to develop this framework is to facilitate development, testing and evaluation of new signal processing algorithms in different scenarios. High quality sensor simulations require that all simulation models e.g. terrain models, target object, material classification, scene simulation and sensor models are of high quality. HLA (High Level Architecture) is used to integrate the different simulation models into a distributed and reconfigurable multi-sensor simulation framework.
On the earliest evidence for habitual use of fire in Europe

The timing of the human control of fire is a hotly debated issue, with claims for regular fire use by early hominins in Africa at ∼1.6 million y ago. These claims are not uncontested, but most archaeologists would agree that the colonization of areas outside Africa, especially of regions such as Europe where temperatures at time dropped below freezing, was indeed tied to the use of fire. Our review of the European evidence suggests that early hominins moved into northern latitudes without the habitual use of fire. It was only much later, from ∼300,000 to 400,000 y ago onward, that fire became a significant part of the hominin technological repertoire. It is also from the second half of the Middle Pleistocene onward that we can observe spectacular cases of Neandertal pyrotechnological knowledge in the production of hafting materials. The increase in the number of sites with good evidence of fire throughout the Late Pleistocene shows that European Neandertals had fire management not unlike that documented for Upper Paleolithic groups.
Real‐time studies of zymogen granule exocytosis in intact rat pancreatic acinar cells

1 An adequate understanding of secretion requires the measurement of exocytosis on the same time scale as that used for second messenger dynamics. To investigate the kinetics of ACh‐evoked secretion in pancreatic acinar cells, exocytosis of zymogen granules was quantified by continuous, time‐differential analysis of digital images. The validity of this method was confirmed by simultaneous fluorescence imaging of quinacrine‐loaded zymogen granules. 2 Basal rates of exocytosis were low (0.2 events min−1). ACh stimulated a biphasic increase in secretory activity, maximal rates exceeding 20 events min−1 after 10 s of ACh application (10 μm). Over the next 15 s the rate of exocytosis fell to less than 4 events min−1; then began a second phase of secretion that peaked 15 s later at ∼11 events min−1, but subsequently declined in the continued presence of agonist. 3 Measurements of fura‐2 fluorescence demonstrated a biphasic increase in intracellular [Ca2+] ([Ca2+]i). Comparison of the [Ca2+]i records and time‐differential analysis revealed that the fall in exocytotic rate following the initial burst occurred despite the fact that [Ca2+]i remained high. 4 The second phase of secretion depended on both [Ca2+]i and [ACh]. At 10 μm ACh there was a decrease in the steepness of the relationship between [Ca2+]i and exocytosis that led to an enhancement of the slow secretory phase. 5 We propose that acinar cells contain two pools of secretory vesicles: a small pool of granules that is exocytosed rapidly, but is quickly depleted; and a reserve pool of granules that can be recruited by ACh in a process that is modulated by second messengers other than calcium.