Market share model of rural telephone service

Premium telephone rates, population density, and the grade of telephone service that rural customers choose all vary with distance from the nearest urban center. A survey of 3800 rural subscribers determined their choice of service for alternative prices given the addition of a new service. A two-stage probit model was used to estimate the new market shares for a wide range of conditions. The model was applied, as part of a large-scale revenue/cost simulation system, to the current and forecasted distribution of customers to evaluate the economic impact of numerous pricing and provisioning possibilities.     

Marriage‐Related Migration to the UK

Spouses form the largest single category of migrant settlement in the UK, but research and policy making on marriage‐related migration to Britain provides incomplete coverage of the phenomenon, having been dominated by a focus on the South Asian populations that are among the largest groups of such migrants. By bringing together immigration statistics with information from academic and third‐sector sources, this article attempts to provide a more balanced and nuanced portrayal of patterns and practices of marriage‐related migration to the UK. In doing so, it reveals important nationality and gender differences in migration flows and considers how varying marriage practices, social and political contexts, and policies of both receiving and sending countries may work to influence marriage‐related migration streams. It also exposes the limitations and lacunae in existing research on this diverse form of migration, highlighting the danger that immigration policy made on the basis of partial evidence will produce unexpected consequences.     

Serials Spoken Here: Reports of Conferences,Institutes, and Seminars

This quarter's column spans nearly eight months in 2016 and comprises reports from three library conferences. The UKSG 39th Annual Conference and Exhibition took place in the Bournemouth International Center (BIC), April 11 to April 13. The Potomac Technical Processing Librarians 92nd Annual Meeting convened October 21 at the University of Richmond. The Charleston Conference took place in Charleston, SC, October 31 to November 5.     

The development of a systematic approach to mental health screening in Child Advocacy Centers

We report on efforts to implement a new protocol of mental health screening for children seen in Child Advocacy Centers (CACs), including the results from the first year of implementation with 1685 families. The parent-reported child screening results (obtained on 46.3% of children) indicate that while many children were not experiencing significant symptoms of internalizing or externalizing problems, a subset of children had very elevated scores. At the one-week and one-month screening, consistent predictors of more severe internalizing problems included age, a parent or step-parent as the offender, and having been removed from the home. For externalizing problems, consistent predictors included Caucasian ethnicity and having been removed from the home. By the one-week follow-up, about half of those interviewed (50.8%) had entered counseling or had an appointment pending. The likelihood of initiating mental health services was increased when the alleged abuse type was sexual, when the child had been removed from the home, and when the child's internalizing and externalizing symptoms were more severe. Surveys of the CAC staff implementing the new process suggest that it helped them understand the needs of the children, though their ability to reach some families was a barrier to implementation.     

Longitudinal Change in Adolescent Depression and Anxiety Symptoms from before to during the COVID-19 Pandemic

This study aimed to examine changes in depression and anxiety symptoms from before to during the first 6 months of the COVID-19 pandemic in a sample of 1,339 adolescents (9–18 years old, 59% female) from three countries. We also examined if age, race/ethnicity, disease burden, or strictness of government restrictions moderated change in symptoms. Data from 12 longitudinal studies (10 U.S., 1 Netherlands, 1 Peru) were combined. Linear mixed effect models showed that depression, but not anxiety, symptoms increased significantly (median increase = 28%). The most negative mental health impacts were reported by multiracial adolescents and those under ‘lockdown’ restrictions. Policy makers need to consider these impacts by investing in ways to support adolescents’ mental health during the pandemic.     

The Perspectives of Young Men and Their Teenage Partners on Maternity and Health Services During Pregnancy and Early Parenthood

This study discusses young couples’ interactions with maternity and health services paying particular attention to men’s perspectives. Findings are based on research conducted in Scotland with men (aged 16–25) and their teenage partners (aged 16–19). Most young men were very involved in their child’s life and provided support and care to their partner during pregnancy and in early parenthood. Men often felt excluded or judged when accessing services, although positive experiences were reported too. The study discusses ways in which maternity and health services can be better attuned to meet the needs of young couples and be inclusive of men.     

Immediate Memory for Mismatched Speech and Representational Gesture Across Development

Two experiments examined how 7- and 8-year-old children, 9- and 10-year-old children, and adults process mismatched, task-related speech and gesture differently as a function of development. Participants watched videotapes of children speaking and gesturing about the concept of conservation. Using a recognition paradigm, we assessed immediate memory for information conveyed in mismatched speech and gesture. In Experiment 1, we used recognition of verbal statements to probe participants' memory, whereas in Experiment 2, we used recognition of gestural statements to probe memory. When probed with verbal statements in Experiment 1, 9- and 10-year-old children failed to retrieve gestured information. When probed with gestural statements in Experiment 2, 9- and 10-year-old children failed to retrieve verbal information. In contrast, the younger children and adults showed retrieval of both verbal and gestural information across both recognition methods in Experiments 1 and 2. These results suggest a U-shaped function with the 9- and 10-year-old children showing a limitation in the ability to process contradictory messages simultaneously conveyed in two modalities. Implications for identifying a transitional period in the development of representational skills are discussed.     

The ‘isolated mass’ revisited: strikes in British coal mining

The authors examine how far inter-colliery variations in local strike activity in Britain between the Wars can be explained by the characteristics of their immediate localities highlighted by Kerr and Siegel's ‘isolated mass’ theory. A regression analysis suggests that some of the variables indicated by Kerr and Siegel did affect strike activity but only weakly. A contingency table analysis confirms that some of the Kerr-Siegel variables serve to define groups of collieries which experienced significantly different levels of strike activity. Whilst supporting many of the criticisms levelled at the Kerr-Siegel hypothesis, the authors conclude that the empirically based rejection of the hypothesis has been too emphatic.     

A Bicriterion Maximal Covering Location Formulation Which Considers the Satisfaction of Uncovered Demand

There have been many applications of the maximal covering location problem (MCLP). An underlying assumption of the MCLP is that demand not covered (i.e., not within a prespecified maximal distance of a facility) is not served. This may be an unrealistic assumption in many location planning scenarios, especially in the public sector. For example, in cases such as fire protection or ambulance service, calls not technically covered will still be serviced. The MCLP, however, does not consider the distances or travel times necessary to service such demand. This paper presents a bicriterion locational covering model which explicitly considers the travel distance or time necessary to service demand not within the maximal covering distance of a facility. The model may be used to generate noninferior (Pareto optimal) siting configurations which demonstrate the inherent trade-offs between a siting scheme designed to maximize total coverage and one designed to minimize total travel time for uncovered demand to reach its nearest facility. In addition, it is shown that for any particular weighting scheme on the two objectives, the problem can be solved as a p-median problem; a problem for which several efficient solution methods exist.