1,721,036 research outputs found
Building Object Models (BOMS) for the Documentation of Historical Building Heritage
No full textThe paper highlights the importance to restoration and renovation projects of a broad classification and storage of H-BOMs, which take into account multidisciplinary contributions to define the level of complexity of the digital shape representation and its embedded technical features. A case study presents the modelling used for the typology of windows of the historic Florentine palaces
[Nuclear magnetic resonance in oncologic radiotherapy].
No full textThe possibilities of utilizing Nuclear Magnetic Resonance in Radiation Oncology are examined, on the basis of information provided by spectroscopy (MRS), studies on the tissues characterization of tumors, and preliminary practical application of imaging (MRI) to radiation therapy. MRS affords information on the bioenergetics of the tumor cells, and on the biochemical changes induced by ionizing radiation; further, some results of clinical importance were obtained in "monitoring" tumor response to radiation therapy and chemotherapy. Tissue characterization of normal tissues and of tumor is analyzed; technical factors, morphological elements, and structural elements are considered. Morphological elements include anatomical recognition, clinical and radiological evaluation, appraisal of the peritumoral tissues, and analysis of inhomogeneities. Among structural elements are considered some methods suitable to achieve a full evaluation of tissue characterization of tumors, on the basis of an appropriate employment of sequence parameters. Practical application of MRI on radiotherapy of tumors comprises staging procedures, contribution to the selection of differentiated radiation volumes for radiotherapy planning, and new data on the evaluation of biological effects of ionizing radiation on normal tissues of patients
IL TRATTAMENTO DELLA PATOLOGIA TENDINEA DEL MEDIO E RETROPIEDE NELLE FASI INIZIALI DELL'ARTRITE REUMATOIDE
No full text
Behind the complexity of a folded paper
No full textDue the widespread use of IT tools in architecture, the ideological boundary between physical and virtual model became blurry: this barrier is overpassed through the hybridation of several techniques for acquiring geometries. In particular, reverse engineering can be applied for the acquisition of the geometrical entities used for achieving a virtual model in which embeds information and knowledge as the design process proceeds. In this paper it is shown some results of an on-going research, developing guidelines for improving both physical and virtual modeling processes within the architectural design. The objective is to outline a workflow procedure to ensure designers the highest level of expressive freedom, but at the same time, to connect the most advanced computer systems for simulation project. The digital environment offers new experience of evaluation of a design choice: designer can understand in advance constructive consequences in relation to the whole design process. Moreover, the systematic approach presented is based on the exchange of information through BIM software. Starting from the realization of several study models in folded paper, the geometry is digitally transferred through a handheld scanner (ZCorp Z800) in mesh and elaborated for the extraction of primitive shapes or ruled surfaces. Afterwards, the virtual model is imported in a BIM software and analyzed for achieving useful information for the decision making process (curvature analysis, hypothesis of materials, thickness and so on)
Eremiti agostiniani lungo la via Francigena. Il romitorio dei Santi Lucia e Antonio a Rosia, Siena
No full textQuando nel 1244 papa Innocenzo IV invitò gli "eremiti della Tuscia", dispersi in numerose comunità, a riunirsi in un unico ordine sotto la regola di Sant'Agostino, la loro presenza nella Val di Merse senese, era già consolidata da lungo tempo. Alcuni storici hanno infatti ipotizzato uno stretto rapporto tra queste comunità eremitiche toscane e il monachesimo dell'Africa settentrionale a partire dal V secolo fino alla grande conquista araba del VII secolo. In tal senso anche la tradizione che vuole una visita di Sant'Agostino ai monaci dell'eremo di Rosia, ci conferma nell'idea della remota origine di questo insediamento. Dalle vicine grotte, che ancora oggi conservano tracce della dimora dei primi anacoreti, attorno all'anno Mille gli eremiti convergono in alcuni cenobi: nascono così le comunità di Santa Lucia, San Salvatore di Lecceto e San Leonardo al Lago. Nel luogo di un preesistente cimitero lungo la via Francigena tra il castello di Montarrenti e il ponte sul torrente Rosia gli eremiti costruiscono una piccola chiesa, primo nucleo edificato del "romitorio" di Santa Lucia. Nell'arco di alcuni secoli verrà a svilupparsi un complesso monastico capace di costituirsi quale importante centro propulsivo della ripresa economica e culturale della valle dopo il degrado alto-medievale. Attorno al chiostro si aggregano il monastero e l'ampia chiesa: l'abside di forma quadrata evoca influenze carolinge, forse portato delle idee di pellegrini e viandanti che percorrono la strada di collegamento tra Roma e le fiere della Champagne, mentre la comparsa della copertura a volta segna per quest'area il primo passaggio dal romanico al gotico. Qui le austere forme ispirate ai canoni di Citeaux, trovano nella tradizione costruttiva locale vibranti declinazioni nell'alternanza dei materiali di differenti colori (mattoni e pietra). Alla fine del ‘700, dopo alterne vicende, il complesso monastico viene lasciato dagli agostiniani e variamente utilizzato come edificio colonico fino al completo abbandono nel secolo scorso. Una recente campagna di rilievo ha inteso indagare i cospicui resti dell'antico eremo, verificando alcune ipotesi interpretative sull'evoluzione morfologica dell'organismo architettonico nel confronto con gli altri complessi eremitici coevi della Val di Merse
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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