Search results for "DURATION"
showing 10 items of 447 documents
The importance of consecutive spells of poverty: a path-dependent index of longitudinal poverty
2011
In this paper we propose a new index of individual poverty in the longitudinal perspective, taking into account the way poverty and non-poverty spells follow one another along individual life courses. The Poverty Persistence Index (PPI) is based on all the pairwise distances between the waves of poverty. The PPI is normalized and it assigns a higher degree of (longitudinal) poverty to people who experience poverty in consecutive, rather than separated, periods, for whom the distances from the poverty line are larger along time and moreover, when the worst years are consecutive and/or recent. We also propose an aggregate index of persistence in poverty (APPI) in order to measure the distribu…
One swallow does not make a summer: episodes and persistence in high growth
2021
This paper analyzes firms’ episodes (spells) of high growth (HG) using a sample of Spanish manufacturing firms observed over two decades. The use of duration models allows us to investigate the following: (i) the probability of experiencing HG episodes, (ii) persistence in HG, and (iii) the determinants of the transitions in and out of the HG state and whether their impact varies over the business cycle. We find that about half of the firms experience at least one HG episode, but they seldom experience more than one. Moreover, high-growth status is rarely repeated due to high first-year selection. Yet, in subsequent years beyond the first one, the hazard rate from HG status falls substantia…
Youth Transition from School to Work in Spain
2001
Using a data set drawn from the Encuesta Socio-Demográfica conducted by the Instituto Nacional de Estadística in 1991, we analyze the labor market entrance of Spanish school leavers and the match between education and work at the early stages of working life. The empirical evidence shows that human capital exerts a strong influence on the duration of unemployment. With regard to the job match between education and work we find that young workers are more likely to be underutilized compared to their adult co-workers. Regression results indicate that people with higher education have, all else being equal, a lower probability of being overeducated and a shorter lenght of unemployment. They al…
Job satisfaction as a unified mechanism for agent behaviour in a labour market with referral hiring
2016
This paper proposes to use job satisfaction (JS) as a unified mechanism for guiding agents' behaviour in the labour market. In the labour-market model presented here, JS affects agents' decisions on which vacancies to apply for, which of them to select in case of receiving several acknowledgements from firms and whether to quit the current job. The performance of the model depending on the structure of JS is studied. The model where JS depends on monetary (relative wages), social (relative number of friends), content and career components is compared with models where JS has only the first or the first two of these. It creates a more realistic firm size distribution and smaller duration of …
Workers' Valuation of the Remaining Employment Contract Duration
2007
This paper introduces and applies a method for estimating workers' marginal willingness to pay for job attributes employing data on job search activity. Worker's willingness to pay for the remaining duration of the employment contract is derived. We provide evidence that workers attach substantial value to the remaining contract duration. A temporary worker with a remaining contract of 6 months is willing to pay about 10% of the wage to increase the contract by one month.
Employment protection : its effects on different skill groups and on the incentive to become skilled
2005
Summary Employment protection affects labour market outcomes and hence the incentive to acquire skills. Using a matching model with two education levels in which workers decide ex-ante on their skill formation, it is shown that employment protection can raise the fraction of skilled workers. This will be the case if workers obtain a sufficiently large fraction of the rent created by skill formation. Furthermore, it will be shown that high-skilled workers face shorter unemployment duration and lower dismissal probabilities.
Designing multi-attribute auctions for engineering services procurement in new product development in the automotive context
2010
Abstract In recent years, use of multi-attribute auctions has been consolidating as a powerful mechanism in procurement settings where multiple drivers affect the transaction outcome. This paper provides a project management approach for multi-attribute auction design for standardized engineering services procurement in the context of new product development in automotive industry. Two variables are taken into account in the bidding process: price and duration of the given engineering activity. From a theoretical viewpoint, we fully determine optimal suppliers’ bidding strategies and expected outcomes, i.e. score/utility, price and duration, for the buyer under both first score sealed bid a…
Revisiting the Duration Dependence in the US Stock Market Cycles
2022
There is a big controversy among both investment professionals and academics regarding how the termination probability of a market state depends on its age. Using more than two centuries of data on the broad US stock market index, we revisit the duration dependence in bull and bear markets. Our results suggest that the duration dependence for both bull and bear markets is a nonlinear function of the state age. It appears that the duration dependence in bear markets is strictly positive. For 93% of the bull markets, the duration dependence is also positive. Only about 7% of the bull markets, those with the longest durations, do not exhibit positive duration dependence. We also compare a few …
Towards Understanding Startup Product Development as Effectual Entrepreneurial Behaviors
2017
With the rapid development of technology and competitiveness of IT sectors, the speed of learning and evolving is vital for success of software startups. However, software startups often face with multiple technical and business challenges, which lengthen the duration of their idea-to-launch process. Little is known about the relation of entrepreneurial characteristics of software startups and their product development. We conducted an empirical study on twenty software startups to understand their challenges that leads long idea-to-launch processes. Six engineering-related challenges were identified and interpreted via a lens of an entrepreneurial behavior theory. Our main finding is that …
Human Sleep EEG under the Influence of Pulsed Radio Frequency Electromagnetic Fields
2000
Former exploratory investigations of sleep alterations due to global system for mobile communications (GSM) signals have shown a hypnotic and REM-suppressive effect under field exposure. This effect was observed in a first study using a power flux density of 0.5 W/m<sup>2</sup>, and the same trend occurred in a second study with a power flux density of 0.2 W/m<sup>2</sup>. For the present study, we applied a submaximal power flux density of 50 W/m<sup>2</sup>. To investigate putative effects of radio frequency electromagnetic fields (EMFs) of cellular GSM phones on human sleep EEG pattern, all-night polysomnographies of 20 healthy male subjects both with …