Search results for "vento"

OPTIMAL AIRLINE SEAT INVENTORY CONTROL FOR MULTI-LEG FLIGHTS

2005

Abstract For large commercial airlines, efficiently setting and updating seat allocation targets for each passenger category on each multi-leg flight is an extremely difficult problem. This paper presents static and dynamic models of airline seat inventory control for multi-leg flights with multiple fare classes, which allow one to maximize an expected contribution to profit. The dynamic model uses the most recent demand and capacity information and allows one to allocate seats dynamically and anticipatory over time.

Optimal airline seat inventory control for multi‐leg flights

2004

Airline seat inventory control is about “selling the right seats to the right people at the right time”. In this paper, the problem of determining optimal booking policy for multiple fare classes in a pool of identical seats for multi‐leg flights is considered. During the time prior to departure of a multi‐leg flight, decisions must be made concerning the allocation of reserved seats to passengers requesting space on the full or partial spans of the flight. It will be noted that in the case of multi‐leg flights the long‐haul passengers are often unable to obtain seats because the shorter‐haul passengers block them. For large commercial airlines, efficiently setting and updating seat allocat…

Ecuba: primo e secondo atto. In: DINO ALESSANDRA, CALLARI LICIA A.. COSCIENZA E POTERE; narrazioni attraverso il mito. p. 91-100, MILANO: Mimesis

2009

LA QUESTIONE DELL'EVENTO NELLA FILOSOFIA CONTEMPORANEA

2013

Il volume rende conto, attraverso lo studio di cinque autori – Bergson, Whitehead, Heidegger, Deleuze, Derrida –, rispettivamente trattati da Rocco Ronchi, Luca Vanzago, Roberto Terzi, Federico Leoni e Giorgio Bertolotti, della centralità che il pensiero dell’evento ha avuto negli sviluppi della filosofia contemporanea. Al di là delle divergenze, anche molto profonde, tra le varie prospettive con cui il tema è stato affrontato, emerge la singolare e significativa convergenza nell’uso di uno stesso termine. La nozione di evento, provvista di una indubbia carica polemica, è stata, per dir così, una sorta di cavallo di Troia con cui ad un certo punto la filosofia, volgendosi verso se stessa, h…

Avisos y relaciones manuscritos y impresos sobre catastrofes naturales y sucesos prodigiosos en Sicilia durante el siglo XVIII

2021

In the eighteenth century there is a large number of stories, both handwritten and in print, that describe extraordinary and unlucky events of different kinds: monstrosities, eclipses, or storms, floods, earthquakes, eruptions, etc. These stories, with respect to Sicily, take the form of occasional printed news, although sometimes they may be included in serials organized by different criteria (topographic/chronological/subject). Surviving documents in archives and libraries offer some opportunities to deepen the study of issues concerning the circulation and dissemination of news about the same event, their credibility, their formal characters and content. Very rare printed ephemera and ha…

Fra stato di necessità ed (illecito) intervento economico: il terzo "bail out" della Grecia

2015

Il lavoro affronta due questioni poste dall'intervento economico del Fondo monetario internazionale e del MES nella crisi del debito greco: da un lato, quello della sostenibilità del debito stesso e dell'applicabilità dei principi di diritto internazionale in tema di stato di necessità; da un altro lato, quello del carattere particolarmente intrusivo delle condizioni poste alla Grecia e della sua valutazione alla luce del principio di non intervento negli affari interni.

Economic and statistical measurement of physical capital: From theory to practice

2018

Abstract The standard measurements of capital and depreciation are statistical measures based on assumptions about the average service life of capital goods, which are accumulated according to the perpetual inventory method. The purpose of this paper is to obtain a true economic measure of capital stock according to the prescriptions of the neoclassical theory. In this way, we develop an alternative method based on the equations that solve the dynamic optimization problem of the firm, yielding an economic estimation based on indicators of profitability, such as the distributed profits and the Tobin's q ratio. Thus, this method enables us to endogenously calculate the variables' rate of depr…

Discrete frequency models for inventory management – an introduction

2001

Abstract The paper deals with the problem of devising a periodic replenishment policy when orders must be periodic, but only a given, discrete set of order frequencies can be used. The multi-item, instantaneous replenishment case with known demand is studied. In particular, staggering policies somehow arranging replenishments not to come at the same time instants are considered. The paper is composed of three parts: first, a taxonomy of several versions of the discrete frequency problem is proposed, according to different elements; in the second part, a general mixed integer programming model is proposed which is able to capture the peculiarities of the whole spectrum of this kind of proble…

Predicting the working alliance over the course of long-term psychodynamic psychotherapy with the Rorschach Ego Impairment Index, self-reported defen…

2021

Better therapeutic alliances are known to predict better treatment outcomes, but little knowledge still exists on the patient characteristics that lead to better alliances. In a sample of 128 outpatients assigned to long-term psychodynamic psychotherapy and suffering from mood and/or anxiety disorder, this study evaluated how the alliance, measured using the Working Alliance Inventory (WAI), is predicted by three different measures for assessing psychological resources and vulnerabilities: the Wechsler Adult Intelligence Scale—Revised (WAIS–R), the Defense Style Questionnaire (DSQ), and the Rorschach-based Ego Impairment Index (EII-2). All the three measures showed some ability to predict t…

Impaired glucose regulation, depressive symptoms, and health-related quality of life

2020

IntroductionThis study aims to investigate whether the associations between impaired glucose regulation and health-related quality of life are modified by severity or type of depressive symptoms.Research design and methodsFor this cross-sectional study, we included 1939 individuals (mean age 61.5 years) from the Helsinki Birth Cohort Study. Between 2001 and 2004, a standard 2-hour 75 g oral glucose tolerance test was applied to define normoglycemia, pre-diabetes, and newly diagnosed diabetes. Information on previously diagnosed diabetes was collected from national registers and questionnaires. Pre-diabetes was defined as having either impaired fasting glucose or impaired glucose tolerance. …