Do Women Cause Unemployment? Evidence from Eight OECD Countries

ABSTRACT: In this paper the authors present the results of preliminary estimates on the effects of changes in the composition of labour forces throughout eight OECD countries during the period 1966-1986. The analysis proceeds in two steps. First, the effect of changes in the distribution of the labour force on group unemployment is computed. Second, the impact of this effect is combined with the direct effect of changes in the distribution of participation on total unemployment rates, to calculate a hypothetical unemployment rate which corresponds to what would have occured had there been no compositional changes. The paper challenges the thesis which sustains that alterations in the age-sex composition of the labour force have exerted an upward pressure on the aggregate unemployment rate.     

Drivers of variability in water use of native and non-native urban trees in the greater Los Angeles area

Trees in urban ecosystems are valued for shade and cooling effects, reduction of CO₂ emissions and pollution, and aesthetics. However, in arid and semi-arid regions, urban trees must be maintained through supplemental irrigation, in competition with other water needs. Currently, a comprehensive understanding of the factors which influence water use of urban tree species is lacking. In order to study the drivers of whole tree water use of two common species in the Los Angeles Basin urban forest, four sites in Los Angeles and Orange County were instrumented with sap flow and meteorological sensors. These sites allowed comparisons of the water use of a native riparian (Platanus racemosa Nutt.; California sycamore) and non-native (Pinus canariensis C. Sm.; Canary Island pine) Mediterranean species, as well as the spatial variability in water use under different environmental and management conditions. We found higher rates of sapflux (J _O ) in native California sycamore as compared to non-native Canary Island pine. Within each species, we found considerable site-to-site variability in the magnitude and seasonality of J _O . For Canary Island pine, the majority of inter-site variability derived from differences in water availability: response to vapor pressure deficit was similar during a period without water limitations. In contrast, California sycamore did not appear to experience water limitation at any site; however, there was considerable spatial variability in water use, potentially linked to differences in nutrient availability. Whole tree transpiration (E) was similar for the two species when water was not limiting, but Canary Island pine was able to withstand unirrigated conditions with a very low E. These results add to the currently small pool of data on urban tree water use and ecophysiology, and contribute to establishing a more quantitative understanding of urban tree function.     

Whose problem? Disability narratives and available identities

Special Issue on the Arts and Community Development, Volume42, Number 4. Unfortunately, the article contained an incorrect quotationthat     

Computer simulation of adult sentencing proposals

Several legislative proposals have been introduced in the State of Washington which would alter sentencing procedures for adults convicted of felonies. A major policy concern is the degree to which such new legislation would impact population levels in an already overcrowded prison system. The Sentencing Alternatives Impact Simulation Project developed a series of computer simulation programs to model the sentencing proposals. Results of the simulations were made available to the Legislature and to planners for Adult Corrections. This article describes the major model developed, the data required to run it, and the results obtained from it under a variety of hypothetical conditions. It includes a discussion of the level of utilization made of the results, and some comments on the requirements for maximizing utilization in future simulation projects.     

Availability of emergency contraceptive pills at university and college student health centers

The author used the stages of change model to determine how ready student health centers at surveyed universities and colleges were to make emergency contraceptive pills (ECPs) available to students. Of the 358 centers that responded, 52.2% offered ECPs and 47.8% did not. The benefits of offering ECPs were listed as pregnancy prevention, the opportunity to introduce students to traditional contraception methods, and students' appreciation. Barriers to offering ECPs included institutions' religious affiliations, clinic and administrative staff objections, inability to prescribe or dispense medications, fear of liability, concern that ECPs would undermine students' use of traditional contraception methods, and no expressed need. Whether ECPs were available was associated with demographic characteristics of the institutions that responded, including geographic region, type of institution, size of student population, and students' status as commuter or on-campus residents.     

Social media? It's serious! Understanding the dark side of social media

Research and practice have mostly focused on the “bright side” of social media, aiming to understand and help in leveraging the manifold opportunities afforded by this technology. However, it is increasingly observable that social media present enormous risks for individuals, communities, firms, and even for society as a whole. Examples for this “dark side” of social media include cyberbullying, addictive use, trolling, online witch hunts, fake news, and privacy abuse. In this article, we aim to illustrate the multidimensionality of the dark side of social media and describe the related various undesirable outcomes. To do this, we adapt the established social media honeycomb framework to explain the dark side implications of each of the seven functional building blocks: conversations, sharing, presence, relationships, reputation, groups, and identity. On the basis of these reflections, we present a number of avenues for future research, so as to facilitate a better understanding and use of social media.