444 research outputs found
Adeguamento sismico del Padiglione E dell'Ospedale San Francesco di Barga (LU)
Lo scopo della tesi riguarda l’individuazione delle carenze strutturali e gli interventi da realizzare per il consolidamento e l’adeguamento sismico alla normativa in vigore dell’ala Nord dell’edificio E, attraverso una analisi di vulnerabilità sismica.
Per ottenere tale risultato si è suddiviso il lavoro nei seguenti punti:
•Rilievo geometrico della struttura, individuazione delle tipologie costruttive, individuazione degli interventi effettuati in passato;
•Caratteristiche dei materiali;
•Azione sismica di progetto sulla base della zonazione prevista dal NTC2008 e delle categorie del suolo di fondazione;
•Modellazioni, analisi e verifiche dell’ala Nord dell’edificio;
•Individuazione delle carenze statiche dell’ala Nord dell’edificio;
•Interventi di adeguamento per l’ala Nord dell’edificio;
•Verifiche degli interventi;
•Valutazione dei costi degli interventi
Overview of the CLEF 2017 personalised information retrieval pilot lab (PIR-CLEF 2017)
The Personalised Information Retrieval (PIR-CLEF) Lab
workshop at CLEF 2017 is designed to provide a forum for the exploration of methodologies for the repeatable evaluation of personalised
information retrieval (PIR). The PIR-CLEF 2017 Lab provides a preliminary pilot edition of a Lab task dedicated to personalised search, while
the workshop at the conference is intended to provide a forum for the
discussion of strategies for the evaluation of PIR and extension of the
pilot Lab task. The PIR-CLEF 2017 Pilot Task is the first evaluation
benchmark based on the Cranfield paradigm, with the potential benefits
of producing evaluation results that are easily reproducible. The task is
based on search sessions over a subset of the ClueWeb12 collection, undertaken by 10 users by using a clearly defined and novel methodology.
The collection provides data gathered by the activities undertaken during the search sessions by each participant, including details of relevant
documents as marked by the searchers. The PIR-CLEF 2017 workshop
is intended to review the design and construction of this Pilot collection and to consider the topic of reproducible evaluation of PIR more
generally with the aim of launching a more formal PIR Lab at CLEF
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Overview of the CLEF 2018 personalised information retrieval lab (PIR-CLEF 2018)
At CLEF 2018, the Personalised Information Retrieval Lab
(PIR-CLEF 2018) has been conceived to provide an initiative aimed at
both providing and critically analysing a new approach to the evaluation
of personalization in Information Retrieval (PIR). PIR-CLEF 2018 is the
first edition of this Lab after the successful Pilot lab organised at CLEF
2017. PIR CLEF 2018 has provided registered participants with the data
sets originally developed for the PIR-CLEF 2017 Pilot task; the data collected are related to real search sessions over a subset of the ClueWeb12
collection, undertaken by 10 users by using a novel methodology. The
data were gathered during the search sessions undertaken by 10 volunteer searchers. Activities during these search sessions included relevance
assessment of a retrieved documents by the searchers. 16 groups registered to participate at PIR-CLEF 2018 and were provided with the data
set to allow them to work on PIR related tasks and to provide feedback
about our proposed PIR evaluation methodology with the aim to create
an effective evaluation task
Overview of the CLEF 2018 personalised information retrieval lab (PIR-CLEF 2018)
At CLEF 2018, the Personalised Information Retrieval Lab
(PIR-CLEF 2018) has been conceived to provide an initiative aimed at
both providing and critically analysing a new approach to the evaluation
of personalization in Information Retrieval (PIR). PIR-CLEF 2018 is the
first edition of this Lab after the successful Pilot lab organised at CLEF
2017. PIR CLEF 2018 has provided registered participants with the data
sets originally developed for the PIR-CLEF 2017 Pilot task; the data collected are related to real search sessions over a subset of the ClueWeb12
collection, undertaken by 10 users by using a novel methodology. The
data were gathered during the search sessions undertaken by 10 volunteer searchers. Activities during these search sessions included relevance
assessment of a retrieved documents by the searchers. 16 groups registered to participate at PIR-CLEF 2018 and were provided with the data
set to allow them to work on PIR related tasks and to provide feedback
about our proposed PIR evaluation methodology with the aim to create
an effective evaluation task
The direct boundary element method: 2D site effects assessment on laterally varying layered media (methodology)
The Direct Boundary Element Method (DBEM) is presented to solve the elastodynamic field equations in 2D, and a complete comprehensive implementation is given. The DBEM is a useful approach to obtain reliable numerical estimates of site effects on seismic ground motion due to irregular geological configurations, both of layering and topography. The method is based on the discretization of the classical Somigliana's elastodynamic representation equation which stems from the reciprocity theorem. This equation is given in terms of the Green's function which is the full-space harmonic steady-state fundamental solution. The formulation permits the treatment of viscoelastic media, therefore site models with intrinsic attenuation can be examined. By means of this approach, the calculation of 2D scattering of seismic waves, due to the incidence of P and SV waves on irregular topographical profiles is performed. Sites such as, canyons, mountains and valleys in irregular multilayered media are computed to test the technique. The obtained transfer functions show excellent agreement with already published results
Administração que cala consente? Dever de decidir, silêncio administrativo e aprovação tácita
The article addresses the steps of Brazilian law in combating the failure to decide by the public administration. It then examines the tacit approval under the terms of the Economic Freedom Act and its Regulatory Decree. It addresses its explicit and implicit requirements, the hypothesis of prohibition, effects after the fictitious act and the question of the applicability of the institute to states and municipalities.O artigo aborda os passos do ordenamento brasileiro no combate à omissão de decidir da administração pública. Em seguida, examina a aprovação tácita nos termos previstos pela Lei de Liberdade Econômica e seu Decreto Regulamentar. Abordam-se seus requisitos explícitos e implícitos, as hipóteses de vedação, os efeitos posteriores ao ato fictício e a questão da aplicabilidade do instituto a estados e municípios
Compromissos como técnica de administração consensual: breves comentários ao art. 26 da LINDB
Art. 26 of the LINDB appears as a general authorizing rule so that the concertation can be used by the public administration through compromises. This essay aims at verifying the legal meaning of “compromises” and at relating it to the concepts of substitutive and integrative agreements. Following that, it analyses the text of the art. 26 in order to point out, through an analytical deductive method, the teleological, material and formal prerequisites for the celebration of compromises. Besides that, this analysis is supposed to demonstrate aspects of the art. 26 that demand further normative regulation.O art. 26 da LINDB surge como norma autorizativa geral nacional para que a concertação possa ser usada pela administração pública por meio da celebração de compromissos. O objetivo desse artigo é verificar o significado jurídico da palavra “compromisso” e relacioná-la com os conceitos de acordos integrativos ou substitutivos. Em seguida, parte-se para o exame do texto do art. 26 da LINDB, buscando-se extrair, por meio do método analítico dedutivo, os requisitos finalísticos, materiais e formais para a celebração de compromissos. Ademais, a partir desse exame, busca-se apontar os aspectos do art. 26 que merecem regulamentação
Polish device for FOCCoS/PFS slit system
The Fiber Optical Cable and Connector System, FOCCoS, for the Prime Focus
Spectrograph, PFS, is responsible for transporting light from the Subaru
Telescope focal plane to a set of four spectrographs. Each spectrograph will be
fed by a convex curved slit with 616 optical fibers organized in a linear
arrangement. The slit frontal surface is covered with a special dark composite,
made with refractory oxide, which is able to sustain its properties with
minimum quantities of abrasives during the polishing process; this stability is
obtained This stability is obtained by the detachment of the refractory oxide
nanoparticles, which then gently reinforce gently the polishing process and
increase its the efficiency. The surface roughness measured in several samples
after high performance polishing was about 0.01 microns. Furthermore, the time
for obtaining a polished surface with this quality is about 10 times less than
the time required for polishing a brass, glass or ceramic surface of the same
size. In this paper, we describe the procedure developed for high quality
polishing of this type of slit. The cylindrical polishing described here, uses
cylindrical concave metal bases on which glass paper is based. The polishing
process consists to use grid sequences of 30 microns, 12 microns, 9 microns, 5
microns, 3 microns, 1 micron and, finally, a colloidal silica on a chemical
cloth. To obtain the maximum throughput, the surface of the fibers should be
polished in such a way that they are optically flat and free from scratches.
The optical fibers are inspected with a microscope at all stages of the
polishing process to ensure high quality. The efficiency of the process may be
improved by using a cylindrical concave composite base as a substrate suitable
for diamond liquid solutions. Despite this process being completely by hand,
the final result shows a very high quality
JPCam: A 1.2Gpixel camera for the J-PAS survey
JPCam is a 14-CCD mosaic camera, using the new e2v 9k-by-9k 10microm-pixel
16-channel detectors, to be deployed on a dedicated 2.55m wide-field telescope
at the OAJ (Observatorio Astrofisico de Javalambre) in Aragon, Spain. The
camera is designed to perform a Baryon Acoustic Oscillations (BAO) survey of
the northern sky. The J-PAS survey strategy will use 54 relatively narrow-band
(~13.8nm) filters equi-spaced between 370 and 920nm plus 3 broad-band filters
to achieve unprecedented photometric red-shift accuracies for faint galaxies
over ~8000 square degrees of sky. The cryostat, detector mosaic and read
electronics is being supplied by e2v under contract to J-PAS while the
mechanical structure, housing the shutter and filter assembly, is being
designed and constructed by a Brazilian consortium led by INPE (Instituto
Nacional de Pesquisas Espaciais). Four sets of 14 filters are placed in the
ambient environment, just above the dewar window but directly in line with the
detectors, leading to a mosaic having ~10mm gaps between each CCD. The massive
500mm aperture shutter is expected to be supplied by the Argelander-Institut
fur Astronomie, Bonn. We will present an overview of JPCam, from the filter
configuration through to the CCD mosaic camera. A brief outline of the main
J-PAS science projects will be included.Comment: 11 pages and 9 figure
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