1,357,959 research outputs found
Les connecteurs transphrastiques du latin tardif et leurs évolutions romanes
No full textOur analysis focuses on the basic coordinating particles (lat. et, aut, uel, at, sed) following their evolution from Late Latin towards Old French and Old Occitan. Coordinating particles take on “conversational implicatures” with temporal, causal, conditional, and concessive senses. All those functions are covered in Late Latin and in the Romance languages by the coordinating particle et, which replaces other coordinating markers. The Sabellian languages foreshadow the tendencies displayed by the Late Latin and Romance evolutions.Medina Granda Rosa Maria, Orlandini Anna, Poccetti Paolo. Les connecteurs transphrastiques du latin tardif et leurs évolutions romanes. In: Latin vulgaire – latin tardif IX. Actes du IXe colloque international sur le latin vulgaire et tardif, Lyon 2-6 septembre 2009. Lyon : Maison de l'Orient et de la Méditerranée Jean Pouilloux, 2012. pp. 453-466. (Collection de la Maison de l'Orient méditerranéen ancien. Série philologique, 49
Sulle origini e gli sviluppi dell’idrometria del fiume Po
No full text"Sulle origini e gli sviluppi dell’idrometria del fiume Po" è il titolo del Capitolo 9, scritto da Stefano Orlandini, che sviluppa, in pratica, i temi affrontati nel capitolo precedente. La trattazione riguarda principalmente la descrizione dei contenuti degli elaborati tecnici della Commissione Brioschi, che costituiscono una sorta di manuale illustrato per la determinazione delle scale delle portate, da prendere come esempio per tutte le sezioni di misura del Po. Lo strumento utilizzato, come si legge anche nel capitolo scritto da Bacchi [Capitolo 8], consisteva in scale idrometriche semplici ma molto belle: erano incise nella pietra del Biancone veronese. La sezione di misura sperimentale era ubicata in Provincia di Ferrara, presso Fossadalbero, circa 7 km a valle di Pontelagoscuro. La Commissione aveva compreso che per potere studiare la dinamica fluviale fosse indispensabile misurare le portate, per seguire la propagazione delle piene lungo l’asta fluviale, per capire le cause della frequenza di questi eventi e della crescita continua dei livelli idrometrici. L’illustrazione delle tecniche di misura e dei contenuti delle tavole è accompagnata da una breve storia degli strumenti di rilevamento e dei loro ideatori. Anche questo capitolo contribuisce significativamente alla conoscenza dei progressi tecnici e scientifici che hanno segnato l'evoluzione dell’idraulica padana. Il contributo di Stefano Orlandini costituisce, dunque, non solo un'interessante rassegna dell'idraulica padana nel corso del tempo, ma accenna anche alle tecniche di misura attuali sul Po e su quelle impiegate negli Stati Uniti, il paese all’avanguardia per l’idraulica fluviale, e a quello che si potrebbe fare nel Po. (Tratto dalla "Guida alla lettura," di Ireneo Ferrari e Maurizio Pellegrini, p. 9-14.
Comment on "Global search algorithm for nondispersive flowpath extraction" by Kyungrock Paik
No full textPaik [2008] presents a new algorithm for the extractionof surface flow paths from gridded elevation data,arguing that ‘‘significant improvement over the limitationof D8 and D8-LTD [methods] can be achieved using a new and simple idea without introducing any model parameter’’ [Paik, 2008, paragraph 9]. However, all Paik’s [2008] arguments against Orlandini et al.’s [2003] D8-LTD method can be shown to be unsubstantial merely on the basis of geometrical considerations. The purpose of the present comment is to point out that (1) an analytical background to support the decision to set the dampening factor equal to 1 in the D8-LTD method does exist and (2) results obtained from incorrect implementations of the D8-LTDmethod are used in the investigation of Paik [2008]. Further considerations on Paik’s [2008] analysis of the D8-LTD method are also provided
A new three-fluid plane membrane contactor for improving energy efficiency of climate control systems
No full textThe worldwide growing interest in improving the energy efficiency of climate control systems has led the research towards the study of innovative plant components. Promising components seem to be combined membrane
contactors (CMCs), which can exchange both sensible and latent heat with the process air [1-4]. In a CMC, vapour and heat transfers take place between air and a liquid phase (water/desiccant solution) through a membrane that is permeable only to vapour. The absorption/desorption of vapour by the liquid phase acts as a latent heat source that leads to a downstream temperature variation in the liquid and, thus, to a reduction in the overall mass transfer potential. To minimize this effect allowing for an enhancement of the contactor performance, a third fluid undergoing a phase change can be used as a thermal reservoir (three-fluid CMC). In a very recent paper [5], the Authors have studied numerically and experimentally the behavior of a prototype three-fluid CMC employing microporous polypropylene (PP) capillaries. The results obtained suggested that an improved CMC with thinner membranes and denser packing could yield much better performances enlarging application potentialities in different fields. In the present paper, an innovative three-fluid CMC with thin plane membranes, that can be assembled by modifying commercially available components (aluminum evaporators), is proposed and its heat and mass transfer performance is numerically investigated. The study takes into account experimental data obtained at the University of Genoa [6] with reference to the air-side mass transfer, which greatly affects the overall mass transfer resistance. Meanwhile, a CMC prototype is on the way to be assembled at the University of Genoa. In the Figure, a sketch of the repetitive module considered in the numerical model is shown. Preliminary results obtained by means of a finite volume numerical code written in the Matlab environment (©Mathworks, Inc.) are presented. The main advantages of this membrane geometry with respect to the capillaries considered in Ref. [5] are: a simpler and cheaper practical feasibility; higher values of Nusselt and Sherwood numbers, for given head losses; a higher overall compactness of the CMC. The vapour transfer rate allowed by the CMC will be discussed in comparison with previous theoretical and experimental results presented in Ref. [5]. Potential applications of CMC components are presented, from indoor air quality dehumidification/humidification processes in refrigeration systems to summer building refreshing.
References
[1] Isetti C., Nannei E., Orlandini B., Capannelli G., Bottino A., Sensible and Latent Heat Exchangers to Improve Energy Efficiency of AC Systems, 4th European Workshop on Mobile Air Conditioning and Vehicle Thermal Systems, Turin, Italy, December 1–2, 2011.
[2] Jia C.X., Dai Y.J., Wu J.Y., Wang R.Z., Analysis on a Hybrid Desiccant Air-Conditioning System, Applied Thermal Engineering 2006; 26: 2393–2400.
[3] Zhang L., Heat and Mass Transfer in a Randomly Packed Hollow Fiber Membrane Module: A Fractal Model Approach, International Journal of Heat Mass Transfer 2011; 54: 2921–2931.
[4] Isetti C., Nannei E., Capannelli G., Bottino A., Contactor Module with Hydrophobic Capillary Membrane Integrated in a Heat Exchanger and Hybrid Plant for the Dehumidification/Conditioning of Air, International Application published under the Patent Cooperation Treaty (PCT) WO 2012/042553 A1.
[5] Isetti C., Nannei E., Orlandini B., Three-fluid membrane contactors for improving the energy efficiency of refrigeration and air-handling systems, International Journal of Ambient Energy 2013; DOI:10.1080/01430750.2012.755905.
[6] Orlandini B., Studio sperimentale e teorico su scambiatori a membrana per il controllo delle condizioni microclimatiche interne, PhD Thesis, University of Genoa, 2011
Residential School Locations Dataset (CSV Format)
No full textThe Residential School Locations Dataset [IRS_Locations.csv] contains the locations (latitude and longitude) of Residential Schools and student hostels operated by the federal government in Canada. All the residential schools and hostels that are listed in the Indian Residential School Settlement Agreement are included in this dataset, as well as several Industrial schools and residential schools that were not part of the IRRSA. This version of the dataset doesn’t include the five schools under the Newfoundland and Labrador Residential Schools Settlement Agreement.
The original school location data was created by the Truth and Reconciliation Commission, and was provided to the researcher (Rosa Orlandini) by the National Centre for Truth and Reconciliation in April 2017. The dataset was created by Rosa Orlandini, and builds upon and enhances the previous work of the Truth and Reconcilation Commission, Morgan Hite (creator of the Atlas of Indian Residential Schools in Canada that was produced for the Tk'emlups First Nation and Justice for Day Scholar's Initiative, and Stephanie Pyne (project lead for the Residential Schools Interactive Map). Each individual school location in this dataset is attributed either to RSIM, Morgan Hite, NCTR or Rosa Orlandini.
Many schools/hostels had several locations throughout the history of the institution. If the school/hostel moved from its’ original location to another property, then the school is considered to have two unique locations in this dataset,the original location and the new location. For example, Lejac Indian Residential School had two locations while it was operating, Stuart Lake and Fraser Lake. If a new school building was constructed on the same property as the original school building, it isn't considered to be a new location, as is the case of Girouard Indian Residential School.When the precise location is known, the coordinates of the main building are provided, and when the precise location of the building isn’t known, an approximate location is provided.
For each residential school institution location, the following information is provided: official names, alternative name, dates of operation, religious affiliation, latitude and longitude coordinates, community location, Indigenous community name, contributor (of the location coordinates), school/institution photo (when available), location point precision, type of school (hostel or residential school) and list of references used to determine the location of the main buildings or sites.</p
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