Search results for "construct"
showing 10 items of 3723 documents
The Lightfield Microscope Eyepiece
2021
Lightfield microscopy has raised growing interest in the last few years. Its ability to get three-dimensional information about the sample in a single shot makes it suitable for many applications in which time resolution is fundamental. In this paper we present a novel device, which is capable of converting any conventional microscope into a lightfield microscope. Based on the Fourier integral microscope concept, we designed the lightfield microscope eyepiece. This is coupled to the eyepiece port, to let the user exploit all the host microscope’s components (objective turret, illumination systems, translation stage, etc.) and get a 3D reconstruction of the sample. After the optical design, …
Shear resistance analytical evaluation for RC beams with transverse reinforcement with two different inclinations
2020
An analysis-oriented mechanical model for shear strength evaluation of Reinforced Concrete (RC) beams with transverse reinforcement with two different inclinations, which required a numerical analysis, is turned into a design-oriented analytical model that can easily be utilized for practical purposes. The model assessed the shear resistance, according to the “lower-bound solution”, employing a numerical procedure that maximizes the element shear strength varying the stresses in the two sets of transverse reinforcement and the magnitude and inclination of the web concrete compressive stress field. The model is formulated with the aim of representing an extension of Eurocode 2 framework to R…
Filles et garçons à l'école, approches sociologiques et psycho-sociales. 2e partie : La construction scolaire des différences entre les sexes
1995
International audience; Après avoir examiné, dans une première partie, les différences de scolarisation entre garçons et filles et tenté de rapporter ces différences à des attitudes en grande partie générées dans la famille et l'environnement social, il est temps d'analyser plus précisément cette socialisation qui prend place dans le contexte scolaire, par laquelle l'école participe à la construction des différences entre les sexes. Dans la classe, où ils passent une grande partie de leur temps et se forgent progressivement une image d'eux-mêmes, les enfants reçoivent, au-delà des interactions strictement pédagogiques, une grande quantité d'informations sur les comportements adéquats pour l…
Evidencias de validez interna de un instrumento para evaluar la colegialidad docente
2019
Este estudio es parte de una investigación más amplia que busca diseñar un modelo de evaluación de los sistemas educativos basado en la mejora de la cohesión social. Se trata de un estudio de validación métrica de un instrumento de evaluación de la colegialidad docente. El instrumento se aplicó a partir de las conclusiones del estudio de validación por comités de expertos. La muestra estuvo formada por 147 profesores voluntarios de primaria y secundaria de España. La metodología utilizada se basó en la recogida de evidencias métricas de validez interna del instrumento; se estudió la dimensionalidad mediante el análisis factorial exploratorio y la capacidad de discriminación mediante el anál…
Operating lease decision and the impact of capitalization in a bank-oriented country
2016
ABSTRACTThis article explores the reasons why firms engage in operating leases and examines the potential impact of a change in the related accounting rules. We focus on the accounting advantage of off-balance financing, which does not affect the typical accounting-based covenants especially important in bank-oriented countries. However, we also consider other economically based arguments. Using manually collected operating lease data for Spanish listed firms, we use the constructive capitalization method to measure as-if liabilities. The results confirm that not only size and industry affect the decision but that firms closer to breaching their covenants are also more inclined to choose op…
PRIVATE FINANCING ALTERNATIVES FOR INFRASTRUCTURE OF STATE OWNED ENTERPRISES
2018
The aim of the article is to examine infrastructure classification and assess private financing alternativesfor major groups of physical infrastructure under ownership of state owned enterprises in Latvia.Tasks of the research include examining types infrastructure with a focus on physical infrastructure,explaining importance of physical infrastructure to economy of a country and society, studying physicalinfrastructure financing challenges and problems, conducting a research on a state owned enterprisesin Latvia, which own physical infrastructure, conducting expert interviews to reveal key challenges ofprivate financing alternatives for funding of infrastructure of state owned enterprises …
Public-Private Partnerships: Agency Costs in the Privatization of Social Infrastructure Financing
2019
Public-private partnerships (PPPs) have been subjected to considerable public debate. In particular, this debate has concerned PPP financing and its implications. Using insights from agency theory, this study aims to develop a theoretical understanding of PPP financing. The following research question is investigated: How does the privatization of financing decrease or increase agency costs in social infrastructure PPPs? A comparative case study consisting of four Norwegian PPP projects with different financial configurations is undertaken. The findings suggest that the private sector is risk averse, increasing the cost of capital. In addition, private financing does not seem to have the i…
Assessing price clustering in European Carbon Markets
2012
Abstract The presence of price clustering in markets is taken as a sign of market inefficiency that can influence trading strategies. In this paper, we study the presence of a concentration in prices in carbon futures markets. Specifically, we analyze the European Carbon Futures Markets and test for evidence of preference for certain prices above others. Our results reveal the strong presence of price clustering in the carbon market at prices ending in digits 0 and 5. These findings support the attraction hypothesis, which endorses a significant clustering on gravitational prices, but also backs the negotiation hypothesis, which advocates greater clustering when trading costs are higher.
Stressing sequence of steel cable-stayed bridges built by cantilevering
2015
The construction of cable-stayed bridges by cantilevering implies several changes of geometry, stress and strain patterns during the assemblage of segments. The main target to be satisfied in the construction process is the achievement of the required final geometry and of a convenient state of stress for self-weight and sustained loads. The sequence of stay stressing and the values of prestressing forces at each stage of segment assembling have the main role for reaching the desired result of design, due to the large redundancy of cable-stayed structures.Among the different procedures proposed in the literature for initial cable force determination, the Partial Elastic Scheme (PES) Method …
Design of RC joints equipped with hybrid trussed beams and friction dampers
2021
Abstract The challenge of this research consists in the first attempt to apply a dissipative friction connection to beam-to-column joints with semi-prefabricated Hybrid Steel-Trussed Concrete Beams (HSTCB) and RC pillars cast in-situ. Nowadays, HSTCBs are widely adopted in civil and industrial buildings and, therefore, it is required to evaluate their compliance with the capacity design criteria and their seismic energy dissipation capability. However, the design of the reinforcement of such beams usually lead to the adoption of large amount of steel within the panel zone which becomes potentially vulnerable to the effects of seismic cyclic actions and dramatically reduce the dissipation ca…