A sharp analysis on the asymptotic behavior of the Durbin-Watson statistic for the first-order autoregressive process

The purpose of this paper is to provide a sharp analysis on the asymptotic behavior of the Durbin-Watson statistic. We focus our attention on the first-order autoregressive process where the driven noise is also given by a first-order autoregressive process. We establish the almost sure convergence and the asymptotic normality for both the least squares estimator of the unknown parameter of the autoregressive process as well as for the serial correlation estimator associated to the driven noise. In addition, the almost sure rates of convergence of our estimates are also provided. It allows us to establish the almost sure convergence and the asymptotic normality for the Durbin-Watson statistic. Finally, we propose a new bilateral statistical test for residual autocorrelation

Literature review on reinforced concrete members strengthened with FRP at room and elevated temperature

In the last 30 years, composite materials have been successfully applied as structural reinforcement to strengthen existing structures. The success of applying FRPs (Fibre Reinforced Polymers) for strengthening is due to their excellent mechanical properties and durability, their ease of application and the versatility of FRP strengthening systems. In particular Near Surface Mounted (NSM) reinforcement offers an interesting technology in terms of protection of the FRP from external influences compared to the Externally Bonded Reinforcement method (EBR). Based on a literature review, this paper discusses the structural performance in terms of FRP to concrete bond behaviour at room and elevated temperature. To understand and characterize the bond interaction, researchers conducted bond shear tests, though the lack of a standard test methodology makes comparison of results not always straight forward. As such, this study looks into bond influencing factors such as concrete type, adhesive type, FRP roughness, groove dimensions, glass transition temperature and coefficient of thermal expansion

The Men and Religion Forward Movement in Virginia, 1911-1912

Graduate Textual or Investigativ

Influence of bond stress-slip relationship on bond strength prediction

The study of the bond stress-slip relationship of FRP (fibre reinforced polymer) adhered to concrete has been a key point to understand the bond behaviour of externally bonded reinforcement (EBR) and near surface mounted (NSM) systems. Researchers have made an effort to determine bond-slip relationships through experimental and analytical/numerical methods, although they have not obtained univocal results. The area under the bond stress-slip relationship, representing the fracture energy, is one of the main parameters to make bond strength predictions. The fracture energy may be divided in two parts: elastic and softening contribution. These parts act both in a different way in predicting the failure load and the effective transfer length. In this paper the influence of the shape of the bond stress-slip relationship on the prediction of the bond strength and transfer length is investigated. Hereby, a comparison is made between the bilinear bond stress-slip relationship (linear elastic ascending branch-linear softening branch) and the elastic-exponential bond stress-slip relationship (linear elastic ascending branch-exponential softening branch)

Bond shear stress-slip relationships for FRP-NSM systems at elevated temperature

In the last years Near Surface Mounted (NSM) reinforcement has mainly been applied at ambient temperature, to strengthen reinforced concrete (RC) beams with FRP (fibre reinforced polymer) materials. Thereby, FRP bars/strips are embedded inside the concrete section by means of grooves filled with adhesive. The behaviour of FRP-NSM strengthening systems at elevated temperature is signicantly influenced by the type of adhesive (e.g. cementitious grout is usually more stable than epoxy resin at high temperature). To characterize the FRP-NSM behaviour two steps are needed: 1) shear tests performed in order to determine the FRP-concrete interaction via bond stress-slip curves and 2) constitutive bond stress-slip relationships for use in structural design (analytical and numerical). Hereby, the bond behaviour is to be considered temperature dependent. During two experimental campaigns, double bond shear tests were performed in order to study the behaviour of FRP-NSM systems at elevated temperature using different types of adhesive, epoxy resin and cementitious grout respectively. The bond shear stress-slip curves are discussed including the effect of different types of adhesive. Simplified bond stress-slip relationships are proposed to model the FRP-concrete interaction at high temperature

Traduzione di un racconto di Fuʼad al-Takarli

Il presente elaborato consiste in una proposta di traduzione di un racconto breve dello scrittore iracheno Fuʼad al-Takarli dal titolo Ḫazīn al-Lāmarʼiyāt. Nel capitolo primo verranno illustrati vita e opere principali dell'autore. Nel capitolo secondo verrà invece brevemente ripercorsa la storia del racconto breve arabo dalle sue origini. Il capitolo terzo conterrà il testo originale del racconto e la relativa traduzione a fronte, con il rispettivo commento a piè di pagina. L'elaborato si chiude con la bibliografia

La traduzione brevettuale dal tedesco all’italiano: applicazioni didattiche e prospettive professionali

This paper argues that the text-type “patent” is eminently suitable for teaching specialized translation at MA level. Translating a patent is a challenge at two levels, given that its technical content is expressed by means of a textual and linguistic framework which in fact is of a legal nature. Consequently, the translation process confronts the translator with no easy task because it must necessarily involve a different approach at the theoretical and practical levels, accounting for the morphosyntactic, lexical and textual peculiarities of both the technical and legal components. Nevertheless a number of features – such as rigid layout rules, recurrent syntactic and lexical structures and a marked tendency towards redundancy and monosemy – counterbalance the aforesaid complexity. That of patents is therefore a somewhat unique text type, which is particularly suitable for specialized translation classes at MA level for at least two reasons. Firstly, students are forced to adopt different translation strategies to cope with the patent’s both technical and legal features. Secondly, translating a patent involves an extensive use of CAT tools. This makes such a text type particularly suitable for introducing students to professional translation, which is the ultimate goal of our teaching activity