37 research outputs found
Una possibile soluzione del rebus di Metafisica I, 10, 1058 b 26-29
No full textFra la trattazione sulla sostanza dei libri VII-IX della Metafisica e la ricapitolazione generale di XI, sta il libro X, dedicato all’unità, alla molteplicità e ad un gruppo di concetti a questi riducibili. Come intorno alla genesi e al significato degli altri libri della Metafisica, così anche per X, i pareri degli studiosi sono assai discordi. In particolare, proprio la fine del libro, ovvero il capitolo 10, è sempre risultata problematica. Per interpretare correttamente l’intero capitolo 10 è necessario, a nostro parere, rileggere il passo 1058 b 26 – 29 alla luce della stretta continuità, contenutistica e grammaticale, con le righe conclusive del capitolo 9 (1058 b 24 – 25). Ci troviamo, cioè, di fronte ad uno di quei casi in cui la divisione tarda in capitoli esercita un effetto distorcente sul testo. Se lo leggiamo, infatti, nella sua continuità, emerge la possibilità di una diversa interpretazione e, quindi, di una diversa traduzione
Experimental Demonstration of Linear Least Squares-based Longitudinal Power Monitoring over a Raman-amplified C+L Link
No full textWe present the first experimental demonstration of a linear least squares-based longitudinal power monitoring algorithm over a C+L link with full backward Raman amplification, transmitting 64-GBaud PDM-QPSK signals over 9x60-km spans of SMF
Ward identity and optical conductivity sum rule in the d-density wave state
No full textWe consider the role of the Ward identity in dealing with the transport properties of an interacting system forming a d-wave modulated charge-density wave or staggered flux phase. In particular, we address this issue from the point of view of the restricted optical-conductivity sum rule. Our aim is to provide a controlled approximation for the current-current correlation function which allows us also to determine analytically the corresponding sum rule. By analyzing the role of the vertex functions in both the microscopic interacting model and in the effective mean-field Hamiltonian, we propose a nonstandard low-energy sum-rule for this system. We also discuss the possible applicability of these results for the description of cuprate superconductors in the pseudogap regime
Good trouble in the academy: inventing design-focused case studies about public management as an archetype of policy design research
No full textSpeaking archetypically, public organizations are practical means for implementing policy interventions. In this regard, their purposeful roles include furnishing operational capacity, while also sustaining support and legitimacy for the interventions as implemented. Contributions to fulfilling these roles are made by myriad practices and systems that are situated organizationally. Organizationally situated practices and systems are matters of concern for professional practitioners concerned with public organizations and their management. As they engage in creating and adapting such working phenomena, design-oriented professional practitioners bring professional knowledge into play. From this standpoint, there's a need for professional practitioners to acquire such professional knowledge, which implies a need for researchers to furnish it. At present, there's no good off the shelf solution for meeting that particular need. This chapter deals with the question of what to do about that gap. Dealing with it makes for good trouble
Electrical lithium battery performance model for second life applications
No full textThe aging behavior of lithium cell has a profound impact on its performance in terms of energy and power efficiency, especially when it is considered in End Of Life (EOL) in automotive field. Lithium battery is considered in EOL if at 85-80% of nominal capacity. Today, the reusing of Electric and Hybrid Vehicles EOL batteries on stationary applications, giving a second life to these batteries, is a solution to reduce high potential cost of lithium batteries. Currently, there is a lack of investigation of the performances of these second life batteries. This paper depicts the performance results of five NMC cells at different SOH, where four of these cells are considered in EOL, so ready to be investigated for possible second use. By results, there are many way to correlate battery SOH and battery performance, e.g. an increase of the internal resistance and the constant-voltage (CV) phase charging duration, the change of the open circuit voltage shape curve. Finally, a battery model based on electrical equivalent circuit is build and implemented in Matlab/Simulink, which is validated by comparison between voltage experimental and simulated data
Impedance spectroscopy characterization of lithium batteries with different ages in second life application
No full textThe aging behavior of lithium cell has a profound impact on its performance in terms of energy, power efficiency and capacity fade, especially when it is considered in End of Life (EOL) in automotive field. Lithium battery is considered in EOL if at 85-80% of nominal capacity. Today, the reusing of Electric and Hybrid Vehicles EOL batteries on less-demanding grid connected energy storage applications, giving them a second use/life, is an interesting solution to reduce high potential cost of lithium batteries. Currently, there is a lack of investigation of the performances of these second life batteries. In this paper, authors show the results of the impedance spectroscopy of 20 Ah lithium NMC batteries after EOL, exactly at 100, 85, 80, 60 and 50% of rated capacity, in a wide range of frequency: 450 mHz to 3.5 kHz. By results, there are many way to correlate battery state of health and battery impedance spectroscopy, especially when the battery is in second life
Nonlinear Noise Estimation using Linear Least Squares-based Longitudinal Power Monitoring
No full textA novel method for closed-form nonlinear noise estimation relying on linear least squares-based longitudinal power monitoring is presented and experimentally validated in a C-band transmission over an EDFA-amplified 5-span 60-km SMF link
The impact of drosophila awd/nme1/2 levels on notch and wg signaling pathways
No full textAwd, the Drosophila homologue of NME1/2 metastasis suppressors, plays key roles in many signaling pathways. Mosaic analysis of the null awdJ2A4 allele showed that loss of awd gene function blocks Notch signaling and the expression of its target genes including the Wingless (Wg/Wnt1) morphogen. We also showed that RNA interference (RNAi)-mediated awd silencing (awdi) in larval wing disc leads to chromosomal instability (CIN) and to Jun amino-terminal kinases (JNK)-mediated cell death. Here we show that this cell death is independent of p53 activity. Based on our previous finding showing that forced survival of awdi-CIN cells leads to aneuploidy without the hyperproliferative effect, we investigated the Wg expression in awdi wing disc cells. Interestingly, the Wg protein is expressed in its correct dorso-ventral domain but shows an altered cellular distribution which impairs its signaling. Further, we show that RNAi-mediated knock down of awd in wing discs does not affect Notch signaling. Thus, our analysis of the hypomorphic phenotype arising from awd downregulation uncovers a dose-dependent effect of Awd in Notch and Wg signaling
QUaternary fault strain INdicators database: QUIN 1.0 - first release from the Apennines of central Italy
No full textThis database relates to the paper “QUaternary fault strain INdicators database - QUIN 1.0 - first release from the Apennines of central Italy”.
It provides very local-scale geometric and kinematic data on Fault Striation Pairs (FSP, the fault plane and the slickenline measured on it) surveyed along the Quaternary (last 2.5 My) extensional intra-Apennine belt of central Italy. The sampled area develops for an along-strike extent of ~550 km and in an average NW-SE direction.
The first release of the “QUaternary fault strain INdicator” database (acronym QUIN) consists of a comprehensive compilation of both unpublished (1315) and published (2026) FSPs, for a total of 3339 records. Overall, considering the ~60,100 numerical data released in this database, the 79.8% are unpublished while the 20.2% are from the previous literature. The FSP data are distributed within ~455 Survey Sites (SS) geolocated along the trace of well-distinct hosting faults. The database is released in a .txt table and as shapefile (.shp) in WGS84 coordinate system. The FSP records are organized in 34 fields, referring to three themes:
A) FSP identification and SS location (fields 1 to 12);
B) FSP geometry with quality ranking and references (fields 13 to 22);
C) FSP deformation axes (fields 23 to 34).
The first two domains include for each FSP the geographic and structural position, the SS name, the hosting fault-system name and average dip-direction, the geometric parameters (strike, dip-direction and dip, and trend and plunge), the newly calculated rake and corresponding kinematic classifications, the references of the field data and two quality rankings on the input data resolutions and location.
The third domain, entirely new from this work, includes for each FSP, the attitude ( trend and plunge) of the kinematic axes (P, B, T) measured at 45° and 30° from striation in the extensional movement plane (see the main paper for more details).
This database represents the most complete local-scale collection of Quaternary geological fault/slip data and derived kinematic and strain parameters over a large regional seismogenic and potentially seismogenic territory.
The QUIN database is meant as a relatively aseptic data input for forecoming stress inversion and geodynamic modelling, fundamental for new generations of seismotectonics and seismic hazard assessment research
espacios libres abiertos como red estructurante de ordenamiento territorial
No full textTrabajo final de arquitecturaEste proyecto surge a partir de la necesidad de dar respuesta a una serie de problemáticas existentes en la periferia sur de la Ciudad de Córdoba. Elegimos la periferia Sur porque entendemos que, desde sus comienzos, fue el lugar elegido para implantar las actividades que más necesitaban estar separadas de la ciudad. Además, debido a la falta de un adecuado planeamiento urbano, la mancha urbana de esta zona creció de manera exponencial en los últimos 20 años, generando un territorio fragmentado con déficits de espacios públicos (8 m2 cuadrados por debajo de lo que recomienda la OMS), una incompatibilidad de usos de suelo muy marcada debido a la presencia de industrias y de viviendas, y una pérdida de los recursos productivos (perdida de hectáreas de cinturón verde) y ambientales (segunda tasa de deforestación más alta del mundo en 2016 llegando a desmontar un equivalente de 6 canchas y media de futbol por día).
Como equipo, proponemos una posible solución mediante un plan de ordenamiento territorial basado en utilizar los recursos ya presentes en el territorio: Los espacios libres abiertos.
Creemos que complementando estos espacios con una diversidad de programas y un sistema de accesibilidad que los vincule, contribuiremos a mejorar la calidad de vida de las personas, a recuperar valores paisajísticos y productivos perdidos y a lograr una adecuada transición entre tejido rural y el urbano
Definimos tres tipos de espacios libres abiertos: espacios naturales, espacios rurales y espacios verdes urbanos.
A partir de estos espacios proponemos tres dimensiones de proyecto y tres estrategias de distinta escala, (S, M y L) dentro de cada una para poder abordar las problemáticas del sector
