Estimating operational costs in an electric utility

Generation expansion planning in the electric utility industry requires consideration of uncertainties in both the demand and supply of electric power. The expected demand is usually expressed via a load-duration curve, while, on the supply side, each generating unit has a given nameplate capacity and a predicted reliability. This paper focuses on considerations of the supply-side uncertainties and their effects on estimating operating costs in electric utility planning. However, the methods and analysis developed in this paper may be applicable to a wider class of production planning problems which deal with any nonstorable product with time varying demand. Two methods for estimating the energy generation from each generating unit are compared. The first is the method of probabilistic simulation, while the second involves a heuristic technique usually denoted the derating method. A bias inherent in the derating method is examined by comparing it with a probabilistic simulation method. The bias is examined for various load curve shapes. In certain cases, a closed form expression for the bias is obtained. However, a closed form expression of the bias for an arbitrary load curve is difficult to achieve. In these situations some examples are studied in which the trend of the relative bias among plants in the loading order is examined. Finally, the bias is examined using actual 1977 load and supply data for some New England utilities.     

Revisiting multi-tier wage structures: Equity,employment mobility,and tier effects

This study considers the competing conclusions reached by Martin and Peterson (1987) and Cappelli and Sherer (1990) regarding two-tier wage systems and examines how worker perceptions of their own employment mobility affect attitudes about two-tier systems. Findings from a hybrid multi-tier wage system in the retail food industry containing both permanent and merging or temporary tiers indicates that workers on the permanently lower B tier possessed more negative attitudes than their A-tier counterparts, with some evidence that the effects of permanent and temporary plans differ. Employment mobility moderates these attitudes, for low mobility workers report more positive attitudes than do high mobility workers.     

COVID-19: Impact on children living in out-of-home care and their carers

Children enter out-of-home care (OOHC) having experienced significant childhood adversities and trauma. Little is known about the short-term impacts of the COVID-19 pandemic on this vulnerable group. To gain some insights, we analysed the early impacts on the well-being and experiences of children in OOHC and their carers using the Pathways of Care Longitudinal Study data prior to and post the first lockdown restrictions. A total of 862 children, young people and their carers were interviewed either pre-COVID-19 restrictions (n = 567) (April 2019–March 2020) or post-COVID-19 restrictions (n = 295) (June–December 2020). While the two groups showed no significant differences in socio-emotional well-being, both the pre- and the post-COVID-19 restriction groups of children in OOHC had slight reductions in socio-emotional well-being. The interviews with the post-COVID-19 group showed that the pandemic restrictions affected children's well-being and behaviour, education, social and physical activities, as well as time spent with their birth family. Likewise, interviews with carers post-COVID-19 found a negative effect on carers' well-being, their ability to manage financially and their capacity to care and access services and support. The article contributes new evidence to inform OOHC policy and practice to support service systems facing unique challenges arising from a pandemic.     

Using hybrid models to support the development of organizational evaluation capacity: a case narrative

The ongoing need for public sector organizations to enhance their internal evaluation capacity is increasingly resulting in the use of hybrid evaluation project models, where internal evaluators work with external contracted evaluators to complete evaluative work. This paper first seeks to identify what is currently known about internal evaluation through a synthesis of the literature in this area. It then presents a case narrative illustrating how internal and external evaluation approaches may be used together to strengthen an evaluation project and to develop the evaluation capacity of the organization. Lessons learned include the need to integrate internal and external resources throughout the evaluation and to clarify expectations at the outset of the project.     

Bad Leaders/Misleaders

Although we need the good witness of others to form our best selves, an argument can be made that we need to study the dark side of the equation as well. The understanding and analysis of bad leaders/misleaders is an important component of leadership studies. However, we argue that bad leaders should never be defined as leaders. Leadership aims at the good of its communities, while misleaders do not. Ethics, therefore, is not only essential to the practice of leadership but to the very meaning of the term.     

The FACES Project: an academic-community partnership to improve end-of-life care for families

This article reports on a research partnership between a community-based hospice and a graduate school of social work. The purpose of the collaboration was to design and test a tool for assessing caregiver strain and resources in families caring for older adults receiving hospice home care services. Eighteen hospice home care social workers interviewed 162 caregivers for the study and provided their own assessment of the tool's clinical utility. Both strengths and challenges of the collaboration are evaluated and implications are discussed for social work practice and research, particularly academic-community research partnerships.     

Correlates of comorbid PTSD and polysubstance use in sexual assault victims

A diverse sample of community-residing women in a large metropolitan area who had experienced adult sexual assault was surveyed using standardized measures in an NIAAA-funded study (2003-2004). Four groups (N = 503) of victims: (1) post-traumatic stress disorder (PTSD)-only, (2) PTSD and illicit drug use, (3) PTSD and drinking problems, and (4) PTSD and polysubstance use were compared using bivariate analyses. Victims with PTSD/polysubstance use had lower socioeconomic status, more extensive trauma histories, worse current psychological functioning, more problematic post-assault psychosocial experiences, and more sexual revictimization at follow-up than those with PTSD only. Implications for future research are discussed.