On the Rounded Integer-Valued Autoregressive Process

In recent years, there has been a growing interest in modelling integred-valued time series. In this article, we propose a modified and generalized version of the first order rounded integer-valued autoregressive RINAR(1) model, originally introduced by Kachour and Yao (2009 Kachour , M. , Yao , J. F. ( 2009 ). First-order rounded integer-valued autoregressive (RINAR(1)) process . Journal of Time Series Analysis 30 ( 4 ): 417 – 448 .[Crossref], [Web of Science ®] , [Google Scholar]). Indeed, this class can be considered as an alternative of classical models based on the thinning operators. Using a Markov chain method, conditions for stationarity and the existence of moments are investigated. Least squares estimator of the model parameters is considered and its consistence is established. Finally, we describe the price change data using a model of the new class.     

Women's acceptance of the diaphragm: the role of relationship factors

The vaginal diaphragm is a candidate for a female-controlled method of reducing risk of HIV/STI acquisition. We examined the association between relationship and partner factors and three measures of diaphragm acceptability: current use, consistency of use, and satisfaction with use. We conducted a telephone survey with 448 female members of a managed care organization, aged 18-49, who currently used contraception (including 140 diaphragm users, 187 pill users, and 121 male condom users). Use of a specific contraceptive was significantly associated with relationship length, condom-use negotiation self-efficacy, importance of covert use, perceived motivation of partner to prevent HIV/STIs, and perceived satisfaction of partner with current method. In addition, among diaphragm users, communication about HIV/STIs and perceived partner motivation to use a diaphragm were related to consistent use. These results suggest that acceptability of contraceptive methods among women is influenced by their perceptions of their male partner and relationship factors.     

The credit channel of monetary policy transmission: evidence from stock returns

This paper offers a novel test of the credit view of the monetary policy transmission mechanism using stock market returns. We identify Fed policy shocks using newspaper accounts and track daily stock prices immediately following the shocks. If the credit channel is important, then firms that are dependent on bank credit and internal funds should receive a relatively greater benefit (loss) from a Fed easing (tightening) than firms with access to nonbank credit at favorable terms. We identify ten policy shocks during the expansion of 1993-94 and the 'credit crunch' period of the 1990-91 recession and find little evidence supportive of an operative credit channel.     

Dosage matters: The relationship between participation in the Nurturing Parenting Program for infants, toddlers, and preschoolers and subsequent child maltreatment

This article uses statewide data on caregivers of young children referred to the Nurturing Parenting Program (NPP) for allegations of abuse and neglect to examine the relationship between program dosage and subsequent maltreatment. At six months after participating in the program, caregivers who attended more sessions were significantly less likely to be reported for child maltreatment, holding other factors constant. At two years after participating, caregivers attending more sessions were significantly less likely to have a substantiated maltreatment incidence, controlling for other characteristics of families associated with maltreatment. These findings demonstrate the program is associated with preventing short-term allegations and longer-term substantiated incidences of maltreatment for a child welfare population. By demonstrating the importance of participation in the NPP, we increase the evidence about effective parent education programs for this population.     

Indicators of information and communication technology adoption in the nonprofit sector: Changes between 2000 and 2004

With the knowledge that information and communication technology (ICT) has brought about significant changes in the structure and functioning of businesses, this research provides information about the changes that have occurred in ICT adoption in nonprofit organizations between 2000 and 2004. Using archival data, it specifically investigates various indicators of ICT adoption and adoption readiness factors. Results illustrate that nonprofit organizations are beginning to position themselves to take advantage of the opportunities provided by ICT adoption.     

Causality in the logic of decision

In recent years there has been an active debate between proponents of two different models of rational decision. One model is evidential decision theory, which is characterized by the fact that it holds the principle of maximizing expected utility to be appropriate whenever the states are probabilistically independent of the acts. The other model, causal decision theory, holds that the principle of maximizing expected utility is appropriate whenever the states are causally independent of the acts. The proponents of evidential decision theory include Richard Jeffrey and Ellery Eells, who claim that evidential decision theory has significant advantages over causal decision theory. In this paper I discuss the two main advantages which have been claimed for evidential decision theory, and show that in fact evidential decision theory does not possess either of these advantages.