Miracle-dz/UniFAR-FTUs huggingface dataset:
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

Parent. Tous droits réservés. All rights reserved. Reproduction partielle permise avec citation du document source, incluant la notice ©. Short sections may be quoted without explicit permission, if full credit, including © notice, is given to the source. Les cahiers de la série scientifique (CS) visent à rendre accessibles des résultats de recherche effectuée au CIRANO afin de susciter échanges et commentaires. Ces cahiers sont écrits dans le style des publications scientifiques. Les idées et les opinions émises sont sous l'unique responsabilité des auteurs et ne représentent pas nécessairement les positions du CIRANO ou de ses partenaires. This paper presents research carried out at CIRANO and aims at encouraging discussion and comment. The observations and viewpoints expressed are the sole responsibility of the authors. They do not necessarily represent positions of CIRANO or its partners. Résumé/Abstract Dans cet article, nous cherchons à développer un modèle par lequel le salaire d'un travailleur est fonction de ses qualifications. Le marché ainsi que le travailleur sont au préalable dans l'incertitude quant à certaines de ces qualifications. L'endogénéité à la fois des changements de salaire et des décisions de changements du secteur d'affiliation résulte du processus d'apprentissage relié aux qualifications du travailleur. Nous montrons ensuite comment le modèle peut être estimé par les méthodes des variables instrumentales non-linéaires. Nous appliquons notre méthodologie à l'étude des salaires et de l'allocation des travailleurs aux différentes occupations et industries. Nous trouvons que les secteurs à salaires élevés emploient des travailleurs ayant davantage de qualifications et que ces secteurs rémunèrent ces qualifications à un taux supérieur relativement aux secteurs à faibles salaires. Les estimés des rendements associés aux qualifications qui ne tiennent pas compte du fait que les rendements diffèrent d'un secteur à un autre sont par conséquent erronés. Nous proposons enfin d'autres applications possibles de notre méthodologie. We develop a model in which a worker's skills determine the worker's current wage and sector. Both the market and the worker are initially uncertain about some of the worker's skills. Endogenous wage changes and sector mobility occur as labor-market participants learn about these unobserved skills. We show how the model can be estimated using non-linear instrumental-variables techniques. We then apply our methodology to study the wages and allocation of workers across occupations and across industries. For both occupations and industries, we find that high-wage sectors employ high-skill workers and offer high returns to workers' skills. Estimates of these sectoral …
On functional encryption : new constructions and some relations.

In recent years, a new, generalized notion of public-key primitive called Functional Encryption (FE) has emerged. In the FE setting, public keys and their matching secret keys can be associated with identities, attributes, policies, predicates and so on. FE covers a large number of primitives, notably, Identity-Based Encryption (IBE), Inner Product Encryption (IPE), Spatial Encryption (SE), Attribute-Based Encryption (ABE) and has numerous applications, particularly in the domains of access control, content distribution, mail filtering, data searching, broadcasting, tracing, and biometrics. Many works on FE in the literature have been targeting on improving the efficiency of constructions, simplifying the relevant assumptions, and achieving stronger security (e.g. full security and adaptively attribute-hiding). In this thesis, we examine three aspects of FE: efficiency of IBE, key revocation in IBE, and the relation between two major classes of FE, namely, Hierarchical IPE (HIPE) and SE. It is desirable that an IBE scheme be as efficient as possible, if it were to have any impact on practical applications. Ideally, we would like to have constantsize global public key, secret keys, and ciphertexts. Moreover, the scheme should ideally achieve full security, namely to be resilient even against an adversary that adaptively selects an identity to attack based on previous secret keys. There are a
Quantitative results for Bruck iterations of demicontinuous pseudocontractions

Our first result is a rate of metastability in the sense of Tao for Bruck's iteration scheme for demicontinuous pseudocontractions in Hilbert space, extracted from Bruck's original proof. This result generalizes earlier work in the ongoing program of proof mining from Lipschitzian to demicontinuous pseudocontractions. Our second main result is a metastable version of asymptotic regularity under the additional assumption that the underlying operator is norm-to-norm uniformly continuous on bounded subsets. These results (and their intermediate versions given in this paper) provide a thorough quantitative analysis of Bruck's iteration scheme for pseudocontractions in Hilbert space.
International Journal of Hospitality Management Assessing Equivalence of Hotel Brand Equity Measures in Cross-cultural Contexts

Keywords: Hotel brand Brand equity Brand choice Measurement invariance Equivalence Cross-cultural a b s t r a c t The authors synthesize the measurement equivalence or invariance literature and illustrate how to conduct equivalence analyses by using a hotel brand equity model as an example. The illustration focuses on how to assess the model's generalizability across three selected cultural or crosscountry factors: the hotel's brand identity (domestic vs. foreign), the customer's first language (Mandarin vs. English), and the customer's country of residence (Asia vs. Europe vs. North America). Results support the model's configural and metric generalizability across the three cross-cultural contexts. The authors show how to interpret the results of equivalence analyses and discuss a few related methodological issues.
The analysis of initial probability distribution in Markov Chain model for lifetime estimation

Fatigue crack growth is a stochastic phenomenon due to the uncertainties factors such as material properties, environmental conditions and geometry of the component. These random factors give an appropriate framework for modelling and predicting a lifetime of the structure. In this paper, an approach of calculating the initial probability distribution is introduced based on the statistical distribution of initial crack length. The fatigue crack growth is modelled and predicted by a Markov Chain associated with a classical deterministic crack Paris law. It has been used in calculating the transition probabilities matrix to represent the physical meaning of fatigue crack growth problem. The equation of Paris law provides information regarding the stress intensity factor and material properties in predicting the crack growth rate. The data from the experimental work under constant amplitude loading was analyzed using the Markov Chain model. The results provide a reliable prediction and show excellent agreement between proposed model and experimental result. The reliability of the model can be an effective tool for safety analysis of structure.
Application of the correcting drive for generating the manipulators of effector's trajectory

The article presents the application of an additional correcting drive in a mechanism (manipulator), which enables shaping effector’s trajectory by fluent modification of the supporting point’s position of a passive module, without the change in speed of the main drive’s angular velocity. The conducted research and computer simulations pertain to a flat mechanism in the form of an articulated quadrilateral. The author shows the application possibilities of the correcting drive in shaping (to a certain extent) arbitrarily given trajectories of manipulator’s effector.
Numerical implementation a stochastic operational matrix based on triangular functions for solving a stochastic nonlinear differential equation

Abstract— In this paper, an efficient method to determine a numerical solution of a stochastic nonlinear differential equation (SNDE) is proposed. The method is illustrated by using a stochastic operational matrix based on the triangular functions (TFs). In this proposed method, the SNDE is reduced to a stochastic nonlinear system of equations and unknowns. Then, the error analysis is demonstrated by using some preliminaries. Finally, the method is evaluated with some numerical examples. (Abstract)
Single-camera three-dimensional tracking of natural particulate and zooplankton

We develop and characterize an image processing algorithm to adapt single-camera defocusing digital particle image velocimetry (DDPIV) for three-dimensional (3D) particle tracking velocimetry (PTV) of natural particulates, such as those present in the ocean. The conventional DDPIV technique is extended to facilitate tracking of non-uniform, non-spherical particles within a volume depth an order of magnitude larger than current single-camera applications (i.e. 10 cm × 10 cm × 24 cm depth) by a dynamic template matching method. This 2D cross-correlation method does not rely on precise determination of the centroid of the tracked objects. To accommodate the broad range of particle number densities found in natural marine environments, the performance of the measurement technique at higher particle densities has been improved by utilizing the time-history of tracked objects to inform 3D reconstruction. The developed processing algorithms were analyzed using synthetically generated images of flow induced by Hill’s spherical vortex, and the capabilities of the measurement technique were demonstrated empirically through volumetric reconstructions of the 3D trajectories of particles and highly non-spherical, 5 mm zooplankton.
Spin to Charge Interconversion Phenomena in the Interface and Surface States

In 1985, Johnson and Silsbee realized the creation of a spin current in nonmagnetic metals, which inspired a vast number of studies related to the spin current until now. Creation of the spin current has been realized in metals, semiconductors, and insulators to date and has provided a fruitful research field. Spin-dependent conductance and spin torque paved a new way for spintronic application, and highly efficient interconversion between spin information and an industrially used one, such as charge current, light, magnetic moment and heat current, became a central topic. In the early stage, the main field of such interconversion was bulk materials; the focus then gradually shifted to surface and interface states. The properties of surface and interface states became pronounced in nanoscale spintronics devices, and a variety of functions have been realized at the interface between two materials, enabling limitless possibilities for spin functions. This review provides an overview of the recent progress o.
Analogy retrieval and processing with distributed vector representations

Holographic reduced representations (HRRs) are a method for encoding nested relational structures in fixed‐width vector representations. HRRs encode relational structures as vector representations in such a way that the superficial similarity of the vectors reflects both superficial and structural similarity of the relational structures. HRRs also support a number of operations that could be very useful in psychological models of human analogy processing: fast estimation of superficial and structural similarity via a vector dot‐product; finding corresponding objects in two structures; and chunking of vector representations. Although similarity assessment and discovery of corresponding objects both theoretically take exponential time to perform fully and accurately, with HRRs one can obtain approximate solutions in constant time. The accuracy of these operations with HRRs mirrors patterns of human performance on analog retrieval and processing tasks.
Stellar variance for asteroseismic parameter estimation and inferences on the evolutionary state and binary population of red giant stars

The latest generation of space missions have performed large scale observations of stars and this has been revolutionary in the field of asteroseismology. The ability to characterise thousands of stars has been instrumental in understanding the interiors of stars and the evolution of the Galaxy. This thesis focuses on studying red giant stars, both on an individual basis and as a population, using a robust asteroseismic metric we define based on the bandpass filtered estimate of the stellar variance. Here we present results of testing asteroseismic scaling relations, and the assumptions needed to create realistic simulated power spectra. The resulting synthetic datasets then inform three other investigations. We present the results of an investigation into determining the binary population of Kepler red giant branch stars using our variance metric. The inferred fraction of 57.4 +/- 2.5% is consistent with previous work on main sequence stars. Results of using our variance metric as part of an analysis pipeline, designed to automate the detection of solar-like oscillations and determine global asteroseismic parameters in K2 and CoRoT data are presented. Finally, we present a discussion of using ourvariance metric to highlight structural differences between red giant branch and red clump stars.
Towards executive information systems adoptions by knowledge workers: an extension of the technology acceptance model to account for social-cultural factors

In recent years a number of organisations have implemented executive information systems (EIS) in order to improve the performance gains on their executives’ job. Although the use of EIS is important to executives, majority of executives are unwilling to use EIS because of their design failures. By using social factors, habits and facilitation conditions variables from Triandis’ framework, this paper extends the Technology Acceptance Model (TAM) to derive useful variables to address the problem of the low usage of EIS by executives. This paper reports on the research in progress in Australia on the adoption and usage of EIS by executives. The preliminary results suggest that executives’ experience in EIS positively relates to their experience in computer-based information systems. The results also suggest a high degree of perceived usefulness, perceived ease of use as well as positive attitude towards using EIS. Further, the results suggest that executives consider social factors in using EIS in their work. Moreover, the results suggest facilitating conditions variables such as EIS development process; EIS management process and organisational environment are strongly related to the adoption and usage of EIS by executives. Finally, the results suggest a high degree of EIS usage by middle managers than top-level managers, which EIS meant to support.
Physicians’ knowledge, attitude and practice of clinical audit in a tertiary health facility in a developing country: a cross-sectional study

Introduction health outcomes in hospitals can be improved through regular conduct of clinical audit. This study assessed physicians´ knowledge, attitude, and practice of clinical audit at the University of Port Harcourt Teaching Hospital (UPTH) in Rivers State. Methods a descriptive cross-sectional study involving 460 doctors selected through convenience sampling. A pretested self-administered questionnaire was administered, and data was analysed using the Statistical Package for Social Research (SPSS) 23.0. Results a total of 457 questionnaires were analyzed giving a response rate of 99.3%. Only 57 (12.5%) of the 457 respondents had a correct understanding of the clinical audit process. Most respondents (75.1%) agreed that clinical audit is important in improving patient care, however only 29.9% were aware that the hospital has a clinical governance structure. Seventy-three (16.0%) doctors had received training in different forms of clinical audit, while 148 (33.0%) were involved in different clinical audit activities, with mortality audit being the most common clinical audit type (81, 17.7%). Conclusion physicians at the University of Port Harcourt Teaching Hospital have poor understanding of the clinical audit process. The integration and scale-up of clinical audit activities as part of an overall clinical governance system in the teaching hospital is recommended.
Teachers' pedagogical content knowledge and new structures for subject matter content

This paper examines the concept of pedagogical content knowledge and its implications for teacher preparation and student's learning. The main part of this paper will focus on the necessity of structuring the subject matter in such a way that the content becomes teachable to students. Studies will be presented to analyze different subject matter structures that can be used to make the content accessible to students. This open access graduate research paper is available at UNI ScholarWorks: https://scholarworks.uni. edu/grp/527 Teacher' Pedagogical Content Knowledge Teacher' Pedagogical Content Knowledge and New Structures for Subject Matter Content Submitted In Partw Fulfillment of the Requirements for the Degree Masters of Arts . Corina S. Cimpoeru University ofNorthem Iowa August, 2001
Electronic and Mechanical Properties of Partially Saturated Carbon and Carbon Nitride Nanothreads

Carbon nanothreads (NTs) are ultrathin materials synthesized by solid-state reaction of crystalline benzene or pyridine under high pressure. Recent experimental studies show that the sp2–sp3 conversion in C–C or C–N bonds toward NT formation is not always complete, typically resulting in samples constituted by a mixture of both partially and fully saturated structures. The objective of this study is to use density functional theory calculations to compute the mechanical and electronic properties of partially saturated carbon and carbon nitride nanothreads and analyze how they differ from those of conventional fully saturated NTs. The results show that partially saturated NTs have lower ideal strengths and stiffness compared to their fully saturated versions, but they are still remarkably strong. The electronic behavior varies from semiconducting to insulating, with band gaps in the range ∼1.8–4.0 eV, while fully saturated NTs usually have wider gaps (>4.0 eV). These results show that partially saturated n.
Tear Film Model Formulation: A 1-D Exploration

The study of the tear film of the eye is important for understanding the causes of dye eye syndrome, a disease causing damage to the ocular surface resulting in discomfort for many people. A popular mathematical model describing the evolution of the tear film thickness over time is a fourth-order nonlinear partial differential equation (PDE). This model has been formulated two different ways to facilitate numerical approximations. The first way is just one PDE including a fourth derivative along with the boundary and initial conditions that is solved for the tear film thickness. The second is a system of coupled second-order PDEs, with the analogous boundary and initial conditions, describing the tear film thickness and pressure. Typically, the second formulation is used when computing the solution as the first poses challenges. These challenges are generally attributed to approximating a scaled fourth derivative and specifying a third derivative for one of the boundary conditions. In this thesis, I explore the computational differences between the two formulations of the tear film model in one spatial dimension. Both formulations are approximated by implementing a method of lines approach where spatial derivatives are approximated with second-order central finite differences, and then the system of differential equations are integrated forward in time using a backward Euler method. The stability of each numerical method is proven analytically with von Neumann analysis, and the usefulness of each formulation is characterized by studying the condition number of each discretization for different parameter values and boundary conditions. In particular, I examine the implications of the relationship between the lid function and boundary conditions. Lastly, a comparison is made with results from the two-dimensional equivalent model on a realistic blinking eye-shaped domain.
Diffie-Hellman Protocol with a Combination of Hyperelliptic Curves and Neural Synchronization

espanolEste trabajo propone un nuevo criptosistema, que combina el protocolo Diffie-Hellman en el cual se implementan curvas hiperelipticas sobre GF(2n), con la sincronizacion de Tree Paritty Machines (TPM). La seguridad propuesta para este criptosistema se centra en superar una debilidad de la sincronizacion neuronal. Especificamente, que el vector de estimulos es publico, lo cual permite a un atacante intentar sincronizar con uno de los participantes de la sincronizacion. Enfocandose en esta debilidad, existen los siguientes ataques: simple, genetico, geometrico y probabilistico. En el criptosistema propuesto, el vector de estimulo inicial se encuentra oculto, porque este vector se obtiene como la clave comun secreta en el protocolo Diffie-Hellman. Luego, en cada iteracion, los vectores de estimulo se mantendran en secreto. Esta condicion hace que el tiempo de aprendizaje tlear aumente en aproximadamente 115% con respecto al tiempo de sincronizacion tsync en promedio, cuando el criptosistema propuesto se compara con la sincronizacion de TPM clasica. EnglishThis work proposes a new cryptosystem, combining a Diffie-Hellman protocol in which hyperelliptic curves over GF(2n) are implemented, with a Tree Parity Machine (TPM) synchronization. Security proposed for this cryptosystem is focused on overcoming a weakness of neuronal synchronization. Specifically, the stimulus vector that is public, which allows an attacker to try to synchronize with one of the participants of the synchronization. Focusing on this weakness, there are the following attacks: genetic attack, geometric attack and probabilistic attack. In the proposed cryptosystem, the initial stimulus vector will be hidden, because this vector is obtained as the common secret key in the Diffie-Hellman protocol. Then in each iteration, the stimulus vectors will be kept secret. This condition causes the learning time tlear to increase by a term of approximately 115% regarding the synchronization time tsync on average when the proposed cryptosystem is compared to the classic TPM synchronization.
A Comparative Study between Univariate and Multivariate Linear Stationary Time Series Models

This work compares the performances of univariate and multivariate time series models. Five time series variables from Nigeria’s gross domestic products were used for the comparative study. These series were modelled using both the univariate and multivariate time series framework. The performances of the two methods were evaluated based on the mean error incurred by each approach. The results showed that the univariate linear stationary models perform better than the multivariate models.