Miracle-dz/UniFAR-FTUs huggingface dataset:
Les effets de l’introduction d’un système ouvert sur la structure d’un secteur: le cas de l’industrie américaine du jeu de rôle

(VF)Dans les approches traditionnelles, les firmes doivent limiter l’acces a leurs actifs strategiques et competences afin de preserver leur avantage concurrentiel. La strategie des systemes ouverts apparait donc contre intuitive. Nous faisons l’hypothese qu’un sponsor donnant acces a son systeme technologique – constitue de differents composants qui doivent etre compatibles entre eux – modifie la structure de son industrie. A partir d’une etude du secteur americain du jeu de role, nous montrons que l’introduction d’un systeme ouvert dans un secteur baisse les barrieres a l’entree et que les nouveaux entrants adoptent majoritairement ce systeme. La taille moyenne des entreprises du secteur diminue egalement du fait d’une specialisation verticale. (VA)Traditionally, industrial organization and resource-based views stress the importance of denying access to strategic assets and competences in order to preserve a competitive ad-vantage. Hence, open-systems strategies appear as counter-intuitive. We hypothesize that a sponsor giving access to his technological system – a system made up of compatible com-ponents – impacts the structure of his industry. Based on an empirical study conducted in the American role play-ing game industry, our results highlight the fact that the introduction of an open system in a sector decreases entry barriers and that new entrants adopt more readily the open system than incumbents. Moreover, the average size of the firms in the industry decreases due to vertical specialization.
Remote sensing of aerosols above cloud using polarization measurements from POLDER/PARASOL: Comparison with LIDAR caliop

Most of the current aerosol retrievals from passive sensors are restricted to cloud-free scenes, which strongly reduces our ability to monitor the aerosol properties at a global scale. The presence of aerosols above clouds affect the polarized radiation reflected by the clouds, as shown by the measurements provided by the POlarization and Directionality of Earth Reflectances (POLDER) instrument. An approximate model of the polarized signal was developed and used to retrieve the Aerosol Optical Thickness (AOT) above clouds. Results obtained with this method in various regions of the world are presented. In a second part, we present additional results obtained with an improved method that allows the retrieval of a detailed microphysical model of the observed particles. The retrieved POLDER AOTs are compared to AOTs retrieved by a spaceborne lidar in case of a dust layer transported above clouds. The advantages and limitations of the different methods are discussed.
DEVELOPMENT AND CONTROL OF A HIGH PRECISION STEWART PLATFORM

In this paper, development and control of a high precision 6 DOF parallel manipulator (Stewart platform) is presented. A kinematic analysis of 6-6 Stewart platform (SP) was designed and simulated in Solidworks. Also its dynamic model is developed in Matlab-Simulink environments. Platform has two main bodies (top and base plates) and six legs connecting top body to base body via universal joints. SP legs were chosen as a high- resolution direct drive motor with a 500nm design resolution from PI Company. Each motor is controlled by a simple PID control within their design resolution. Optimized PID control is designed in SIMULINK environment and embedded in a Dspace DS1103 real time controller. The trajectory and position control of SP was achieved with 500nm accuracy.
Stability, Receptivity, and Sensitivity Analyses of Buffeting Transonic Flow over a Profile

A transonic flow over the OAT15A supercritical profile is considered. The interaction between the shock wave and the turbulent boundary layer is investigated through numerical simulation and global stability analysis for a wide range of angles of attack. Numerical simulations are in good agreement with previous studies and manage to reproduce the high-amplitude self-sustained shock oscillations known as shock buffet. In agreement with previous results, it is found that the buffet phenomenon is driven by an unstable global mode of the linearized Navier–Stokes equations. Analysis of the adjoint global mode reveals that the flow is most receptive to harmonic forcings on the suction side of the profile, within the boundary layer upstream of the shock foot, in the recirculation bubble downstream of the shock foot, and on the right characteristic that impinges the shock foot. An eigenvalue sensitivity analysis shows that a steady streamwise force applied either in the boundary layer or in the recirculation regi.
Hybrid Controls in Project Organisations

For the past decade, project organization has become increasingly central to management and organization studies, particularly as these seek to discern the contours of post-modern organizations. Yet, these contours frequently seem to be sighted without bearings on the current realities of project management. In this paper we take such bearings, using data derived from a detailed qualitative, ethnographic enquiry into the experience of project management. Project managers from France speak authentically about the experience of being a project manager. From this data we construct the contours more sharply. Rather than being a harbinger of an autonomous and more democratic future, free from extant bureaucratic organization controls, we find that project management has distinct modalities of control that we outline in the paper: behavioural, calculative, organizational, professional and corporate. Indeed, rather than foreshadowing a future transformational form, we find traces of a much older design: that of Tocqueville.
Effects of Monetary Policy on Industry sector Growth in Iran

The main objectives of macroeconomic policies, in general, and monetary policies, in particular, are price stability, economic growth and a favorable employment level. This article estimates the major determinants of monetary Policy and investigates how effects of monetary Policy have changed industry sector Growth in Iran. The theoretical framework is based on this assumption that the real output is inversely related to the interest rate but it is shifted by monetary policy. This study uses annual time series data (1961-2007) and unit root tests and analyze them using Auto Regressive Distributed Lag (ARDL) model by Pesaran et al. [1]. This co-integration technique accommodates potential structural breaks that could undermine the existence of a long-run relationship between monetary Policy and industry sector Growth and its main determinants.
A Scalable Fractional Model for IPMC actuator

In this work a scalable non integer model of IPMC actuator is presented. The goal is to obtain a model able to predict the behavior of IPMC, with a generic shape and any boundary condition. An experimental setup has been realized to study the IPMCs behavior and an algorithm has been developed in Matlab r Environment to identify a fractional order model of IPMC actuators.
Beyond the Average: Peer Heterogeneity and Intergenerational Transmission of Education

Estimating the effect of ‘ethnic capital’ on human capital investment decisions is complicated by the endogeneity of location choice of immigrants and the reflection problem. We exploit a rare immigrant settlement policy in Germany to identify the causal impact of parental peer-heterogeneity on the educational outcomes of their children. To identify the direction of peer effect we restrict to no-child-adult-peers who completed their education much before the children in our sample of interest. We find that children of low-educated parents benefit significantly from the presence of high-educated neighbors, with more pronounced effects in more polarized neighborhoods and significant gender heterogeneity. In contrast, we do not find any negative influence coming from the low-educated neighbors. Our estimates are robust to a range of flexible peer definitions. Overall, the findings suggest an increase in parental aspirations as the possible mechanism rather than a direct child-to-child peer effect.
Alternative Options in the Management of Malignant Pleural Mesothelioma

Malignant pleural mesothelioma is a solid, locally aggressive tumor that has been linked to asbestos exposure. Without treatment MPM is associated with a poor median survival, ranging from 4 to 12 months. Extrapleural pneumonectomy offers better local control compared to pleurectomy/decortication. Chemotherapy combined with IL-2 and radiation provides some palliation. However, unsatisfactory results of these approaches have led clinicians to pursue novel therapeutic options. Local photodynamic therapy (PDT) has been studied with pleurectomy or extrapleural pneumonectomy. Intrapleural IFN-α radiosensitization and targeted immunotherapies may downstage tumors preoperatively. Gene therapies can sensitize tumor cells to antiviral drugs and may be used as a neoadjuvant therapy or to destroy residual tumor after resection. Inhibition of angiogenic growth factors or their receptors can slow tumor growth. Intracavitary hyperthermic chemotherapy, photodynamic therapy, vaccination, immunotherapy, and gene therapy are relatively new options with potential to be integrated into multimodality approach.
X-Ray Spectroscopy of Rapidly Rotating, Late-Type Dwarf Stars

We present an X-ray spectroscopic analysis of two active dwarf stars with extremely short rotation periods, HD 197890 (Speedy Mic) and Gliese 890, using X-ray data acquired with the ASCA observatory. We analyze the X-ray spectrum of Speedy Mic in two separate time intervals, one corresponding to an apparent stellar flare, the other to "quiescence" or the nonflaring state. We also present a reanalysis of the ASCA spectrum of the M dwarf stellar binary YY Gem, during both quiescent and flaring states. We use the recently updated MEKAL plasma code to model these spectra and find that a minimum of two temperature components are required to obtain good fits for all three stars. The inferred emission measures of the hot components in YY Gem and Speedy Mic, and the temperature of the hot component in the case of YY Gem, increase significantly during the observed X-ray flares, in agreement with previous studies of similar stellar X-ray flares. In addition, metal abundances that are low compared to the solar photospheric values are preferred (but not required) for the quiescent coronae of Gliese 890 and Speedy Mic, while for the quiescent corona of YY Gem, subsolar metal abundances are required and solar abundance models can be ruled out with high confidence. We combine the results of this study with those of previous ASCA and ROSAT analyses of late-type dwarf stars with known rotation rates to obtain a sample of 17 G, K, and M dwarfs. We find a strong correlation of the X-ray to bolometric luminosity ratio, LX/Lbol, both with the rotation period and the Rossby number (Ro), in agreement with previous studies. Using a homogeneous subset of 10 dwarfs for which we have purely ASCA-derived temperatures and elemental abundances, we find that the temperature of the hottest component present in their coronae is correlated with this luminosity ratio, as expected. Finally, we note that the Fe abundances for all active dwarf stars having normalized X-ray luminosities log (LX/Lbol)>-3.7 are significantly subsolar, whereas the Fe abundances in the less active stars are within a factor of 2 of the solar value.
Institutional logics and social mechanisms: a pragmatic multilevel perspective

DOI: 10.5902/198346598220 Institutionalists have argued about some different toolkit for addressing the paths of historical change in the different areas of research, including the development of a set of social mechanisms that may help to account for the impact of macro-level changes on the micro or individual level. In recent years institutional research has been focusing on institutional logics as an analytical approach with a higher potential to solve this puzzle. Therefore the main goal of this paper is to open a research stream onto a focus on a methodological approach and analytical tool to study multi-level relationships. For instance, a topic that has been claimed as still in need of more consideration, the understanding of how organizations are influenced by competing logics, and the implications of those logics in terms of practices performed by actors and group identity formation, could be better explored.
Risk-Sensitive Particle-Filtering-based Prognosis Framework for Estimation of Remaining Useful Life in Energy Storage Devices<

Failure prognosis, and particularly representation and management of uncertainty in long-term predictions, is a topic of paramount importance not only to improve productivity and efficiency, but also to ensure safety in the system’s operation. The use of particle filter (PF) algorithms in combination with outer feedback correction loops has contributed significantly to the development of a robust framework for online estimation of the remaining useful equipment life. This paper explores the advantages and disadvantages of a Risk-Sensitive PF (RSPF) prognosis framework that complements the benefits of the classic approach, by representing the probability of rare events and highly non-monotonic phenomena within the formulation of the nonlinear dynamic equation that describes the evolution of the fault condition in time. The performance of this approach is thoroughly compared using a set of ad-hoc metrics. Actual data illustrating aging of an energy storage device (specifically battery capacity measurements [A-hr]) are used to test the proposed framework.
Economic Analysis and Prediction of Recurrent Events

Economic events such as expansions and recessions in economic activity, bull and bear markets in stock prices and ﬁnancial crises have long attracted substantial interest. In recent times there has been a focus upon predicting the events and constructing Early Warning Systems of them. Econometric analysis of such recurrent events is however in its infancy. One can represent the events as a set of binary indicators. However they are different to the binary random variables studied in micro-econometrics, being constructed from some (possibly) continuous data. The lecture discusses what difference this makes to their econometric analysis. It sets out a framework which deals with how the binary variables are constructed, what an appropriate estimation procedure would be, and the implications for the prediction of them. An example based on Turkish business cycles is used throughout the lecture.
The Influence of SMEs Decision-Makers' Individual Characteristics on Risk Perception Associated with Exporting: Evidence from Saudi Arabia

This paper explores the influence of the individual characteristics on the risk perceptions of decision-makers within small and medium sized (SME) businesses considering (or engaged in) exporting within the Saudi Arabia. Currently there is a paucity of research examining individual-level differences and the decision to export within manufacturing settings. Moreover, this is the first examination of these characteristics within the Saudi Arabian contexts. A total of fifteen interviews with Saudi SMEs mangers/owners within manufacturing industries were completed. The results suggest that managers’ individual characteristics (operationalised as personality, management style, education and experience) influence their perceptions of risks associated with the exporting decision. Keywords: Risk perception, Saudi Arabia, SMEs decision-makers, Individual characteristics, Exporting SMEs
Chemical modification of glycidyl methacrylate copolymers with oximes containing pyridine groups

In this work the homopolymer and copolymers of glycidyl methacrylate (GMA) with methyl methacrylate (MMA), ethylmethacrylate (EMA), methylacrylate (MA) and ethylacrylate (EA) were synthesized by free radical polymerization using azobis (isobutyronitrile) (AIBN) as initiator at 70 ±10C. Then, copolymers of glycidyl methacrylate have been modified by incorporation of highly sterically hindered demanding 2-pyridinecarbaldehyde oxime through the ring opening reaction of the epoxy groups. The polymers were characterized by 1H-NMR and FT-IR. Presence of bulk the 2-pyridinecarbaldehyde oxime groups in polymer side chains leads to an increase in the rigidity and glass transition temperature of polymer as shown by DMTA analysis. The metal ion uptake by the functional groups of membranes was determined by the use of atomic absorption (AA) and SEM-EDAX and X-Ray Mapping techniques. The research demonstrated that the synthesized modified polymer could successfully remove heavy metals from solution. With the incorporation of the 2-pyridinecarbaldehyde oxime groups in the polymer side chains, a series of novel modified polymer containing new properties are obtained, that can find some applications in polymer industry.
The Expression Changes of Casein mRNAs in Mammary Epithelial Cells Recovered from Bovine Milk during the Lactation Period

The aim of this study was to examine the correlation between bovine casein (CN) mRNA expression levels in mammary epithelial cells and lactation period, the yields of milk proteins and other parameters. The cells were collected from each cow's milk, which contained somatic cell counts (SCC) of less than 100,000 cells/ml. The levels of αs1-, αs2-, β- and κ-CN mRNA expression were significantly correlated with each other in mammary epithelial cells (p<0.01). All cows produced either less than 30 kg/day/cow or a over 30 kg/day/cow level of milk yield (MY). It was shown that the CN mRNA expression levels decreased gradually from the calving period to late lactation, when MY was over 30 kg/day/cow. The SCC tended to increase gradually during the course of lactation, but it was negatively correlated with milk protein and CN yields (p<0.01) when MY was less than 30 kg/day/cow. Moreover, there was a tendency for a negative correlation between SCC and αs1-CN and β-CN mRNA expression level, when MY was less than 30 kg/day/cow (p<0.05). (Key Words : Casein mRNA Expression, Mammary Epithelial Cells, Lactation Period, Milk Yield, Casein Yield, SCC)
Material Uncertainty Effects on Frequency of Composite Plates with Matrix Crack Induced Delaminations

The effect of random variation in composite material properties on the reliability of structural damage detection is addressed in this paper. A composite plate is considered as the structure and a finite element model is used for the simulation. Damage growth due to cyclic loading is addressed. Matrix crack induced delamination is emphasized in this paper. Thresholds for the damage accumulation are found using finite element simulations so that the structure can be subjected to inspections and removed from service safely. Uncertainty effects of composite material properties on the response of the structure are quantified using Monte Carlo simulations. Vibration modes which are robust damage indicators for fixed and simply supported plates are identified.
Femtosecond laser inscription of nonlinear photonic circuits in Gallium Lanthanum Sulphide glass

We report on femtosecond laser writing of single mode optical waveguides in chalcogenide Gallium Lanthanum Sulphide (GLS) glass. A multiscan fabrication process was employed to create waveguides with symmetric single mode guidance and low insertion losses for the first time at 800 nm wavelength, compatible with Ti:Sapphire ultrafast lasers and nonlinear photonics applications. μRaman and x-ray microanalysis were used to elucidate the origin of the laser-induced refractive index change in GLS. We found that the laser irradiation produced a gentle modification of the GLS network, altering the Ga–S and La–S bonds to induce an increase in the refractive index. Nonlinear refractive index measurements of the waveguides were performed by finding the optical switching parameters of a directional coupler, demonstrating that the nonlinear properties were preserved, evidencing that GLS is a promising platform for laser-written integrated nonlinear photonics.
From 'out there' to 'in between': Preschoolers' interpretation of televised images

Two studies investigated preschoolers' understanding of how televised images relate to the reality they represent: are they seen as merely showing the visual aspect of reality as it is ('world-window' interpretation), or as representing it by way of specific visual means ('media' interpretation). The first study compared the reactions of younger (4 - 5) and older (6 - 7) preschoolers to very short video clips showing some usual and some unusual (impossible) sights. The children were asked whether what they saw on the screen was true and, if not, how it was possible to show it. The analysis of children's explanations indicates a development toward 'media' interpretation: while younger children tend to explain the impossible images by referring to interventions made 'out there', in front of the camera, the older ones tend to explain them by referring to the interventions of the medium itself. In the second study some of the older preschoolers were given a brief visual literacy training(Videolab method). In the subsequent testing these children demonstrated faster movement toward 'media' interpretations. Cognitive-developmental and educational implications of these findings are discussed.
Fisher's Relation and the Term Structure: Implications for IS Curves

We derive the new Keynesian IS curve from the Fisher relation and the expectations theory of the term structure, without reference to household preferences. We show that, under certain conditions, parameters of the empirical new Keynesian IS curves need not be estimated but can be calibrated from observed data. We specifically show that the coefficient of relative risk aversion is the steady-state consumption-output ratio and that the interest rate effect on output can be reasonably approximated by the inverse of the average term to maturity of debt instruments. We highlight the implications of these findings for macroeconomic modelling and estimation.
Pursuing the double affine Grassmannian III: Convolution with affine Zastava

This is the third paper of a series (started by arXiv:0711.2083, arXiv:0908.3390) which describes a conjectural analog of the affine Grassmannian for affine Kac-Moody groups (also known as the double affine Grassmannian). The current paper is dedicated to describing a conjectural analog of the convolution diagram for the double affine Grassmannian and affine Zastava.
Simulación de entidades en realidad virtual

En la actualidad, las nuevas tecnoloǵıas emergentes han alterado los procedimientos tradicionales de transmision del conocimiento, incorporando nuevas formas de visualización e interacción a través de equipos especializados los cuales proveen, además, la alternativa de interacción del observador con el objeto/dato visualizado, enriqueciendo la ilusión de representar información tridimensional en un espacio bidimensional. La generación de gráficos 3D en los que se simulen de forma realista el comportamiento de personajes, objetos y materiales naturales, en especial cuando estos interaccionan entre śı es de gran importancia, ya que existen muchas aplicaciones que requieren que el comportamiento de este tipo de entidades sea realista o al menos créıble. Adicionalmente, el hecho de que en las aplicaciones interactivas, como en la simulación o los videojuegos, el tiempo para determinar su comportamiento sea muy reducido, hace que el problema tenga dif́ıcil solución. Esta propuesta de trabajo establece los lineamientos a seguir con la intención de abordar los principales problemas existentes en la simulacion del comportamiento de personajes y objetos dentro de un entorno de Realidad Virtual inmersiva, aśı como las técnicas que pueden ser empleadas en su solución.