Search results for "USA"

Need of causal analysis for assessing phase relationships in closed loop interacting cardiovascular variability series

2003

The phase spectra obtained by the classical closed loop autoregressive model (2AR) and by an open loop autoregressive model (ARXAR) were compared to shed light on the need of introducing causality in the assessment of the delay between RR and arterial pressure oscillations. The reliability of the two approaches was tested in simulation and real data setting. In simulation, the coupling strength of a bivariate closed loop process was adjusted to obtain a range of working conditions from open to closed loop. In open loop condition, 2AR and ARXAR phases were comparable and in agreement with the imposed delay. In closed loop condition, ARXAR model returned the imposed delays, while 2AR showed a…

Letter by Masè et al Regarding Article, "Granger Causality-Based Analysis for Classification of Fibrillation Mechanisms and Localization of Rotationa…

2020

Causalidad en salud laboral: el caso ardystil

1995

ResumenEl establecimiento de relaciones causa-efecto ha sido y sigue siendo objeto de debate en epidemiología. La naturaleza observacional de la investigación epidemiológica dificulta el reconocimiento de estas relaciones. En este contexto, se han propuesto diferentes modelos para explicar las relaciones causales en los procesos de salud y enfermedad, desde el modelo determinista puro defendido por los postulados de Koch, que requiere la aceptación de relaciones unicausales, pasando por otras explicaciones que asumen la naturaleza multicausal de los problemas de salud en la población. En Salud Laboral se debe disponer también de modelos explicativos y criterios consensuados para valorar las…

A new Framework for the Spectral Information Decomposition of Multivariate Gaussian Processes

2021

: Different information-theoretic measures are available in the literature for the study of pairwise and higher-order interactions in multivariate dynamical systems. While these measures operate in the time domain, several physiological and non-physiological systems exhibit a rich oscillatory content that is typically analyzed in the frequency domain through spectral and cross-spectral approaches. For Gaussian systems, the relation between information and spectral measures has been established considering coupling and causality measures, but not for higher-order interactions. To fill this gap, in this work we introduce an information-theoretic framework in the frequency domain to quantify t…

Data from: The strategic reference gene: an organismal theory of inclusive fitness

2019

How to define and use the concept of inclusive fitness is a contentious topic in evolutionary theory. Inclusive fitness can be used to calculate selection on a focal gene, but it is also applied to whole organisms. Individuals are then predicted to appear designed as if to maximise their inclusive fitness, provided that certain conditions are met (formally when interactions between individuals are ‘additive’). Here we argue that applying the concept of inclusive fitness to organisms is justified under far broader conditions than previously shown, but only if it is appropriately defined. Specifically, we propose that organisms should maximise the sum of their offspring (including any accrued…

Il nesso di causalità

2018

The essay deals with the issue of causation in private law, referring to the broad debate that commits the scholars of criminal law. The basic idea is that in the area of private law, both in the law in action and in the reflections of the doctrine, the causal judgment must be conducted more rigorously. The study proposes to apply in a more inflexible way the model of judgment already experimented in criminal law, corrected with the necessary adaptations to the characteristics of liability in private law and of the civil trial. The proposed model is structured on two levels: the general one of a nomologicaldeductive nature (general causation) and the other concrete one based on logical prob…

Immigrant entrepreneur firm start-up behavior and reasoning : a reflective study of causation, effectuation and bricolage

2013

Entrepreneurship research studies how and why firms come into being, survive and grow (Davidsson, 2004; Gartner, 1985; Schumpeter, 1934). Early literature has proposed a linear model of entrepreneurship which is intentional (Bird, 1988), opportunity discovery (Kirzner, 1997; Shane and Venkataraman, 2000) and goal & strategy oriented (Wiklund & Shepherd, 2005). Being a mainstream in the earlier research, it is labelled as causation model by Sarasvathy (2001). Several scholars such as Baker & Nelson (2005) and Sarasvathy (2001a, b; 2008) questioned the validity of the model and proposed two additional models to the classic model: Effectuation (Sarasvathy, 1998) and Entrepreneurial Bricolage (…

Causalità e responsabilità contrattuale (tenzone tra un giudice e un professore). Parte I: La causalità generale

2022

Il saggio si articola in due parti. Nella prima vengono affrontate le due fasi del giudizio sulla causalità materiale, soffermandosi, in particolare, sul nodo dell'individuazione delle regole di causalità generale, sul problema sistematico dell'unitarietà o meno della nozione di causalità materiale, anche alla luce della portata degli art. 40 e 41 c.p., e sulla necessità di differenziare le regole probatorie della causalità materiale nel diritto civile rispetto a quelle operanti nel diritto penale. Nella seconda parte viene approfondito il tema controverso dell'autonomo rilievo o meno della causalità materiale nella responsabilità per inadempimento delle obbligazioni di facere professionale…

Causalità e responsabilità contrattuale (tenzone tra un giudice e un professore). Parte II: La causalità materiale e le obbligazioni di facere profes…

2022

Il saggio si articola in due parti. Nella prima vengono affrontate le due fasi del giudizio sulla causalità materiale, soffermandosi, in particolare, sul nodo dell'individuazione delle regole di causalità generale, sul problema sistematico dell'unitarietà o meno della nozione di causalità materiale, anche alla luce della portata degli art. 40 e 41 c.p., e sulla necessità di differenziare le regole probatorie della causalità materiale nel diritto civile rispetto a quelle operanti nel diritto penale. Nella seconda parte viene approfondito il tema controverso dell'autonomo rilievo o meno della causalità materiale nella responsabilità per inadempimento delle obbligazioni di facere professionale…

Prediction and Control: The Specific Role of Business Angels in the Investment Process

2019

International audience; Entrepreneurs and related investors (business angels and venture capitalists) rely on different types of rationalities. Extant research suggests that conflicts resulting from misunderstanding can emerge between entrepreneurs and investors when they adopt different rationalities but must switch those rationalities because of the maturity of their ventures and the degree of uncertainty they face. Relying on three in-depth case studies, this research contributes to both entrepreneurship and effectuation literature by emphasizing the specific role of business angels in helping entrepreneurs switch rationalities when necessary to attract funding resources from venture cap…