A5044921091- Space Satellite Systems and Control
- Structural Engineering and Vibration Analysis
- Masonry and Concrete Structural Analysis
- Dynamics and Control of Mechanical Systems
- Vibration and Dynamic Analysis
- Control and Dynamics of Mobile Robots
- Civil and Structural Engineering Research
- Semantic Web and Ontologies
- Astro and Planetary Science
- Planetary Science and Exploration
- Diverse academic and cultural studies
- Structural Analysis of Composite Materials
- Space Exploration and Technology
- Metal Forming Simulation Techniques
- Fluid Dynamics and Vibration Analysis
- Building materials and conservation
- Tribology and Lubrication Engineering
- Italian Literature and Culture
- Engineering Structural Analysis Methods
- Geophysics and Sensor Technology
- Modular Robots and Swarm Intelligence
- Management, Economics, and Public Policy
- Evacuation and Crowd Dynamics
- Spacecraft Dynamics and Control
- Spaceflight effects on biology
Sapienza University of Rome
1991-2023
Translational Innovation in Medicine and Complexity
2002
The out-of-plane response of infill walls has recently gained a growing attention and been recognised fundamental in the damage assessment reinforced concrete steel framed buildings subjected to seismic loads. observation after earthquakes highlighted that collapse masonry infills may occur even during events low or moderate intensity, causing both casualty risks unfavourable situations affecting overall structural response. Even though studies concerning behaviour are not as many those...
The three-dimensional free vibrations of an orbiter-towed tethered satellite system with nominally vertical tether during stationkeeping phase are studied analytically. is modeled as elastic continuum mass and the orbiter subsatellite two concentrated masses. linearized equations motion variable coefficients solved by means a perturbation technique. An analysis order magnitude different terms involved permits evaluation coupling between longitudinal transversal in-plane coming to approximate...
In this paper, the out-of-plane response of infill walls is investigated by means non-linear monotonic (push-over) analyses through a combined finite and discrete modelling approach.The model accounts for material deformability, crack formation, sliding, separation formation new contacts.Masonry units are modelled as elements, different models assumed masonry.Contact between masonry units, frame elements interfaces, which permit tangential motion with frictional sliding.Frame linearelastic...
In recent years, the interest in out-of-plane response of infills has been growing due to need limiting damage these elements, commonly considered as non structural.Different experimental tests and theoretical studies have carried out on this subject.They highlighted that slenderness boundary conditions panel, mechanical characteristics masonry, stiffness surrounding frame elements presence cracks prior in-plane noticeably affect carrying capacity infill walls.In paper, a review comparison...
The majority of built heritage covering large spans are with curved masonry components, such as multi-ring arches, to attain greater overall thickness. Their ultimate structural capacity when subjected external loads is significantly influenced by the various construction techniques utilized. Such structures made up independent rings that communicate one another through interface contacts, and geometrical features, like size, orientation, arrangement units, play a significant role, do...
An analytical model is presented to study the three-dimensional free vibrations of Tethered Satellite System. In model, tether considered as an elastic continuum with mass, while Space Shuttle and subsatellite are two concentrated masses. Linearized equations motion given for out-of-plane in-plane vibrations. Extended numerical analyses performed geometrical mechanical properties system. It found that components weakly coupled through gyroscopic forces, generally transversal or longitudinal...
Introduces the RELIEF retrieval system, a system for image based on conceptual graph formalism. Conceptual graphs can be used as simple and expressive language indexing retrieving non-textual documents. In this formalism, implementation of matching function between query document is obtained by using so-called projection operator two graphs. However, first implementations have shown its lack efficiency, it an exponential algorithm. The supports new polynomial which turns out to equivalent...
Observation of damage after earthquakes has highlighted that out-of-plane failures masonry infill walls may often occur even in the case low or moderate earthquakes, causing both casualty risks for people and unfavourable situations affecting overall structural response.In recent years, several experimental tests have been carried out trying to determine relevance different parameters affect carrying capacity walls, such as slenderness ratio boundary conditions panel, mechanical...
Conceptual graphs can be used as a simple and expressive language for indexing retrieving non-textual documents. In this knowledge representation formalism, the implementation of matching function between query document is obtained by so-called projection operator two conceptual graphs. A good algorithm therefore crucial managing large bases text image We present new promising implementation. It has important feature that it applies to whole index database. implemented approach on top...
In information retrieval, the way in which correspondence procedure works is highly important for performance of underlying system as a whole. An inverted file ensures quick access to items because index alone examined, rather than actual items, order determine satisfy search request. This technique was prominent feature old commercial retrieval systems (IRSs). However it has been used only keyword-based IRSs. Since that time, design not radically modified. With recent use more expressive...