Search results for "Reciproc"
showing 10 items of 281 documents
A Strain Sensing Structural Health Monitoring System for Delaminated Composite Structures
2012
Structural Health Monitoring (SHM) for composite materials is becoming a primary task due to their extended use in safety critical applications. Different methods, based on the use of piezoelectric transducers as well as of fiber optics, has been successfully proposed to detect and monitor damage in composite structural components with particular attention focused on delamination cracks.In the present paper a Structural Health Monitoring model, based on the use of piezoelectric sensors, already proposed by the authors for isotropic damaged components, is extended to delaminated composite structures. The dynamic behavior of the host damaged structure and the bonded piezoelectric sensors is m…
EDUCAZIONE FAMILIARE E ORIENTAMENTI DI VALORE
2014
L'educazione familiare ha un nesso costitutivo con l'educazione morale. Questa tesi pedagogica diviene particolarmente evidente nella società liquida, soprattutto in ragione del fatto che, in modo solo in apparenza paradossale, molte esperienze appaiono in essa di tipo inaugurale: terreno propizio per le scelte morali. In generale, è nella famiglia come comunità spirituale che è dato trovare la genealogia della persona; in essa si forma la sensibilità del soggetto, il suo stile emotivo singolare come disposizione verso un cespite di senso, assiologicamente ed eticamente positivo - una risposta al suo fondamentale bisogno di riconoscimento.
Cutting efficiency of heat-treated nickel-titanium single-file systems at different incidence angles.
2020
Cutting efficiency of Reciproc R25 (REC) and Reciproc blue R25 (REB) at different inclinations was evaluated. Sixty new files were tested at 90°, 70° and 45° of inclination in relation to the sample (n = 10), using a customised machine. All files were activated in reciprocation against standardised gypsum blocks for 120 s. Cutting efficiency was determined by measuring the block weight loss with an analytical balance and measuring the length of the block surface cut using a digital calliper. Data were statistically analysed (two-way ANOVA, Bonferroni t-test) with the significance level set at P < 0.05. There was no difference for REC among the tested angles. REB had no statistical differenc…
Factors contributing to verbal self-disclosure
2007
The phenomenon of self-disclosure has been actively studied in several sub-discliplines of psychology from the 1970s on, and neighbouring disciplines, such as social and communication sciences, have enriched the psychological understanding of the topic. The psychological literature on self-disclosure, which is viewed, sometimes as a trait-like construct, varying in degree from one person to another, and sometimes as an interpersonal process which occurs when individuals interact with each other, has addressed, in particular, the issues of reciprocity effect, sex differences, self-disclosure in intimate vs. non-intimate relationships, the benefits to be derived from disclosing, and the emoti…
Habermas’ Universal Pragmatics: Theory of Language and Social Theory
2013
Although Habermas’ universal pragmatics has played a marginal role in studies on pragmatics, it can still make an important and meaningful contribution, precisely because it highlights the system of validity claims that lie in speech acts. This type of analysis allows one to consider the dialogic dynamics that engage speakers in the activity of reciprocal giving and asking for reasons for saying and doing things. The reasons why a speaker knows he or she can say what he or she says in the presence of other speakers constitute an essential element of the production of meaning; and reciprocally identification of the speaker’s reasons by the listener is an indispensable condition of the activi…
Global Non-monotonicity of Solutions to Nonlinear Second-Order Differential Equations
2018
We study behavior of solutions to two classes of nonlinear second-order differential equations with a damping term. Sufficient conditions for the first derivative of a solution x(t) to change sign at least once in a given interval (in a given infinite sequence of intervals) are provided. These conditions imply global non-monotone behavior of solutions.
A hierarchy of simplified constitutive models within isotropic strain gradient elasticity
2017
Abstract Simplified isotropic models of strain gradient elasticity are presented, based on the mutual relationship between the inherent (dual) gradient directions (i.e. the gradient direction of any strain gradient source and the lever arm direction of the promoted double stress). A class of gradient-symmetric materials featured by gradient directions obeying a reciprocity relation and by 4 independent h.o. (higher order) coefficients is envisioned, along with the sub-classes of hemi-collinear materials (3 h.o. coefficients, gradient directions in part coincident), collinear materials (2 h.o. coefficients, equal gradient directions) and micro-affine materials (1 h.o. coefficient, behavioral…
Automated Electron Diffraction Tomography
2012
Ab-initio structure analysis by electron diffraction is hampered by two major problems: insufficient number of reflections sampled and an intensity alteration by dynamical scattering contribution or beam damage. Thus, in recent years the principles of automated diffraction tomography (ADT) allowing systematic reciprocal space sampling and automated data analysis were developed. Here the basic ideas of ADT and its general applicability will be discussed along with some examples of solved structures.
Automated diffraction tomography combined with electron precession: a new tool forab initionanostructure analysis
2009
AbstractThree-dimensional electron diffraction data was collected with our recently developed module for automated diffraction tomography and used to solve inorganic as well as organic crystal structuresab initio. The diffraction data, which covers nearly the full relevant reciprocal space, was collected in the standard nano electron diffraction mode as well as in combination with the precession technique and was subsequently processed with a newly developed automated diffraction analysis and processing software package. Non-precessed data turned out to be sufficient forab initiostructure solution by direct methods for simple crystal structures only, while precessed data allowed structure s…
Structure solution with automated electron diffraction tomography data: different instrumental approaches
2011
Summary Over the past few years automated electron diffraction tomography has become an established technique for structure solution of nano-crystalline material. The intentional choice of an arbitrary tilt axis and thus, the use of nonoriented diffraction patterns (off-zone acquisition) together with fine equidistant sampling of the reciprocal space result in high quality intensity data sets. Coupling automated electron diffraction tomography with electron beam precession (Vincent & Midgley, 1994) enables sampling of intensities between the static slices of reciprocal space and therefore enhances the quality of intensity data further; relatively complex structures have been solved using 3D…