• Title/Summary/Keyword: Piazza

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A Study on the Piazza Plan of Basilica S. Pietro (산 피에트로 교회의 광장계획에 관한 연구)

  • Kim, Seok-Man
    • Journal of architectural history
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    • v.14 no.1 s.41
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    • pp.7-19
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    • 2005
  • The purpose of this paper is the study on the piazza plan of basilica S. Pietro. The results of study are as follows: 1. The piazza of the basilica S. Pietro was planned in relation to building-piazza-symbol of interior piazza-street as city planning characteristic of Baroque and architectural characteristic of elliptical piazza form. 2. The function of piazza of basilica S. Pietro was planned for religious meeting of a grand scale than a piazza for the common run of people. 3. In general, the disposition, ground, elevation and section plan of the piazza of basilica S. Pietro was planned by principle of spatial and formal composition, according to axis, symmetry, proportion, division and contrast. 4. The location, scale, shape of piazza for disposition and ground plan of the piazza of basilica S. Pietro was basically decided by not only elements of Basilica building, Vatican Palace, Street and Walls of surroundings with axis of the Basilica building, but Fountain and Obelisk as existing constituent elements. 5. The elevation of the piazza of basilica S. Pietro was composed of boundary that was enclosed from wall of trapezoid piazza and gallery of elliptical piazza with equal height as symmetry. And the section plan was planned to approach into the Basilica through slope and stairs of gentle angle, utilizing of existing land form.

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The Architectural Characteristics of Piazza Navona, Rome and its Ecological Function and Role in Urban Environments (로마 나보나 광장의 건축적 특성과 도시 생태적 기능 및 역할)

  • Kwon, Gyoung Nam
    • KIEAE Journal
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    • v.16 no.6
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    • pp.83-94
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    • 2016
  • Purpose: A city is regarded as an organic living thing that generates, changes, and fades away in relationship with many components of city. Therefore, a city has its own identity based on its historical trace. Among these elements composing a city, it is a square that makes a city more active and dynamic. Piazza Navona in Rome, Italy has played its role as significant core in the city and has distinctive function from other squares in urban ecological environments. In this study, the distinguishing function and role of Piazza Navona will be defined. Another purpose of study is to figure out what factors of Piazza Navona attracts a lot of diverse people and activities. Method: First, general understanding of function, type, and history of piazza; Second, the historical background of Piazza Navona; Third, site analysis related to surrounding environments; Fourth, architectural characteristic of Piazza Navona in terms of plan and elevation; Fifth, comparing with other representative squares in Rome such as Piazza San Pietro, Piazza del Popolo, and Piazza del Campidoglio in aspects of urban function. Result: Piazza Navona provides both citizen and visitors with an inviting place to embrace all kinds of activities including assembly, annual festival, and daily events. Its functions in the urban environments also involve a tourist attractor as landmark, place for social and cultural interaction, market, and place for meeting and leisure. It is attributed to following factors; historical background as the city center since the first century AD; its location in the center of Rome; enough size and flexibility to accommodate many people and various events; open space enclosed by surrounding buildings; historical baroque structures and sculptures of fountains; synergy effect with commercial and other tourist attractors around Piazza Navona; and comfortable accessibility.

Seismic performance sensitivity to concrete strength variability: a case-study

  • Stefano, M. De;Tanganelli, M.;Viti, S.
    • Earthquakes and Structures
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    • v.9 no.2
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    • pp.321-337
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    • 2015
  • Existing building structures can easily present material mechanical properties which can largely vary even within a single structure. The current European Technical Code, Eurocode 8, does not provide specific instructions to account for high variability in mechanical properties. As a consequence of the high strength variability, at the occurrence of seismic events, the structure may evidence unexpected phenomena, like torsional effects, with larger experienced deformations and, in turn, with reduced seismic performance. This work is focused on the reduction in seismic performance due to the concrete strength variability. The analysis has been performed on a case-study, i.e., a 3D RC framed 4 storey building. A Normal distribution, compatible to a large available database, has been taken to represent the concrete strength domain. Different plan layouts, representative of realistic strength distributions, have been considered, and a statistical analysis has been performed on the induced reduction in seismic performance. The obtained results have been compared to the standard analysis as provided by Eurocode 8 for existing buildings. The comparison has shown that the Eurocode 8 provisions are not conservative for existing buildings having a large variability in concrete strength.

Vault macro-element with equivalent trusses in global seismic analyses

  • Giresini, Linda;Sassu, Mauro;Butenweg, Christoph;Alecci, Valerio;De Stefano, Mario
    • Earthquakes and Structures
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    • v.12 no.4
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    • pp.409-423
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    • 2017
  • This paper proposes a quick and simplified method to describe masonry vaults in global seismic analyses of buildings. An equivalent macro-element constituted by a set of six trusses, two for each transverse, longitudinal and diagonal direction, is introduced. The equivalent trusses, whose stiffness is calculated by fully modeled vaults of different geometry, mechanical properties and boundary conditions, simulate the vault in both global analysis and local analysis, such as kinematic or rocking approaches. A parametric study was carried out to investigate the influence of geometrical characteristics and mechanical features on the equivalent stiffness values. The method was numerically validated by performing modal and transient analysis on a three naves-church in the elastic range. Vibration modes and displacement time-histories were compared showing satisfying agreement between the complete and the simplified models. This procedure is particularly useful in engineering practice because it allows to assess, in a simplified way, the effectiveness of strengthening interventions for reducing horizontal relative displacements between vault supports.

EXTRACTION OF INTERPRETIVE WAVELETS BY MODIFIED WIENER FILTER METHOD - TEST AND EVALUATION WITH MARINE SESMIIC DATA- (修正 위너필터 方法에 依한 解釋波의 抽出 -海洋彈性波 探査資料에 依한 實驗 및 評價)

  • Youn, Oong Koo;Han, Sang-Joon;Park, Byung Kwon
    • 한국해양학회지
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    • v.18 no.2
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    • pp.117-124
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    • 1983
  • Pizza's synthetic model, a modified Wiener filter method, was tested to establish the procedure of desirable interpretive wavelet extraction and its application to the marine seismic exploration using several approaches with a real offshore seismic data of the southeast Asia. Noise spectrum acquisition is difficult and any assumptions for it do not produce interpretive wavelets as good as synthetic model result by Piazza (1979). however the resolution could be improved with spiking deconvoultion and following zero phase bandpass filter, and the testing procedure and evaluatttion of results can hopefully contribute in future study and practical evaluation of Piazza's method.

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Quantity vs. Quality in the Model Order Reduction (MOR) of a Linear System

  • Casciati, Sara;Faravelli, Lucia
    • Smart Structures and Systems
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    • v.13 no.1
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    • pp.99-109
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    • 2014
  • The goal of any Model Order Reduction (MOR) technique is to build a model of order lower than the one of the real model, so that the computational effort is reduced, and the ability to estimate the input-output mapping of the original system is preserved in an important region of the input space. Actually, since only a subset of the input space is of interest, the matching is required only in this subset of the input space. In this contribution, the consequences on the achieved accuracy of adopting different reduction technique patterns is discussed mainly with reference to a linear case study.

Energy harvesting and power management of wireless sensors for structural control applications in civil engineering

  • Casciati, Sara;Faravelli, Lucia;Chen, Zhicong
    • Smart Structures and Systems
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    • v.10 no.3
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    • pp.299-312
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    • 2012
  • The authors' research efforts recently led to the development of a customized wireless control unit which receives the real-time feedbacks from the sensors, and elaborates the consequent control signal to drive the actuator(s). The controller is wireless in performing the data transmission task, i.e., it receives the signals from the sensors without the need of installing any analogue cable connection between them, but it is powered by wire. The actuator also needs to be powered by wire. In this framework, the design of a power management unit is of interest only for the wireless sensor stations, and it should be adaptable to different kind of sensor requirements in terms of voltage and power consumption. In the present paper, the power management efficiency is optimized by taking into consideration three different kinds of accelerometers, a load cell, and a non-contact laser displacement sensor. The required voltages are assumed to be provided by a power harvesting solution where the energy is stored into a capacitor.

COMPLEX SUBMANIFOLDS IN REAL HYPERSURFACES

  • Han, Chong-Kyu;Tomassini, Giuseppe
    • Journal of the Korean Mathematical Society
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    • v.47 no.5
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    • pp.1001-1015
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    • 2010
  • Let M be a $C^{\infty}$ real hypersurface in $\mathbb{C}^{n+1}$, $n\;{\geq}\;1$, locally given as the zero locus of a $C^{\infty}$ real valued function r that is defined on a neighborhood of the reference point $P\;{\in}\;M$. For each k = 1,..., n we present a necessary and sufficient condition for there to exist a complex manifold of dimension k through P that is contained in M, assuming the Levi form has rank n - k at P. The problem is to find an integral manifold of the real 1-form $i{\partial}r$ on M whose tangent bundle is invariant under the complex structure tensor J. We present generalized versions of the Frobenius theorem and make use of them to prove the existence of complex submanifolds.

Full composites hydrogen fuel cells unmanned aerial vehicle with telescopic boom

  • Carrera, E.;Verrastro, M.;Boretti, Alberto
    • Advances in aircraft and spacecraft science
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    • v.9 no.1
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    • pp.17-37
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    • 2022
  • This paper discusses an improved unmanned aerial vehicle, UAV, configuration characterized by telescopic booms to optimize the flight mechanics and fuel consumption of the aircraft at various loading/flight conditions.The starting point consists of a full-composite smaller UAV which was derived by a general aviation ultralight motorized aircraft ULM. The present design, named ToBoFlex, extends the two-booms configuration to a three tons aircraft. To adapt the design to needs relevant to different applications, new solutions were proposed in aerodynamic fields and materials and structural areas. Different structural solutions were reported. To optimize aircraft endurance, the innovative concept of Telescopic Tail Boom was considered along with two different tails architecture. A new structural configuration of the fuselage was proposed. Further consideration of hydrogen fuel cell electric propulsion is now being studied in collaboration between the Polytechnic of Turin and Prince Mohammad Bin Fahd University which could be the starting point of future investigations.

A Study on Nutrient Intake and Food Consumption by Food Frequency Questionnaire According to the Obesity Index of Women College Students in Kunsan. (군산시 일부 여대생의 비만도에 따른 영양소 섭취와 식품섭취빈도)

  • 장혜순;김미라
    • Korean Journal of Human Ecology
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    • v.6 no.1
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    • pp.45-56
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    • 2003
  • The purpose of this study was to compare nutrient intake and food consumption by food frequency according to the obesity index of women college student in Kunsan. The subjects were 251 women college students who were randomly selected from Kunsan national university. Subjects were assigned to one of the following group based on BMI : underweight, normal weight and overweight. Nutrient intake and food consumption by food frequency were evaluated based on questionnaires and 24 hour recall method. The results were as follows. %RDA of calcium, iron and zinc of obese group were more than the underweight group(p<0.05). %Fat was significantly correlated with the daily intakes of protein and vitamin E(p<0.05). %Fat was significantly correlated with %RDA of energy, protein, vitamin E, vitamin B$_{6}$. RBW was significantly correlated with %RDA of iron. BMI was significantly correlated with %RDA of energy, calcium, phosphorus. The foods frequently consumed among students were cooked rice and gimchi. The frequencies of fish and mushroom were correlated with food behavior scores(p<0.01). The frequencies of carbonated beverage(p<0.01), hamburger & piazza, deep fried foods(p<0.01), soybean curd fried fish cake(p(0.05) were correlated with nutritional knowledge scores.

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