Locus of control of unemployed people and its relationship to psychological and physical well-being

This study examines the relationship between locus of control (general and work) and the psychologcal and physical well-being of 190 unemployed people. Results indicate that an internal locus of control was associated with lower levels of anxiety and depression, and higher levels of self-esteem and life satisfaction than externals. Intenals also tended to report fewer physical symptoms not requiring medical attention. There was no relationship between either measure of locus of control and physical symptoms requiring medical attention. Future research on unemployment is suggested.     

A note on the uniqueness of M-Lestimators in robust regression

A method of examining the uniqueness of estimates is reviewed, which we show to be flawed in that it neglects a continuity problem that can arise when simultaneously estimating the scale and regression parameters.     

An empirical analysis of union election outcomes in the electric utility industry

Unions in the electric utility industry consistently won a greater percentage of elections between 1970 and 1989 than did unions in other industries. Several factors significantly affected union victory rates at electric utilities: when the election was held, the union involved, the size of the utility, the percent of the state’s labor force unionized, the number of eligible voters, whether the election involved multiple-unions, and whether the election was Regional- or Board-directed.     

Motivational factors and physician advice for physical activity in older urban adults

This study aimed to ascertain by means of a new scale older adults' motives for engaging in physical activity, in a probability and representative sample of an older urban population. The sample size was 630 older adults, ranging from 65 to 94 years in age, randomly selected using multistage sampling. The participants completed a 17-item questionnaire, as well as answering questions on demographic variables, type of demand for physical activity, and physician's recommendation. A principal-component analysis was performed. The relationships among the four factors (physical health, social relationships, competence, and physician's advice) show a clearly motivational structure. Significant relationships have also been found between physician's recommendation and type of demand. The findings suggest that programs promoting physical activity in older adults should have different characteristics from those aimed at general adult populations.     

Social Work and Social Justice in Northern Ireland: Towards a New Occupational Space

Correspondence to: Dr John Pinkerton, School of Social Work, Queens University Belfast, 7 Lennoxvale, Belfast BT9 5BY, Northern Ireland. E-mail j.pinkerton{at}qub.ac.uk Summary This article considers the concept of social justice by referenceto the experience of social work in Northern Ireland duringthe past forty years of communal, paramilitary and state violence.It notes the contested nature of the concept and its chequeredhistory within the professional ideology of social work generallyand its absence as a significant explanatory and motivationalconcept for social workers in Northern Ireland to date. It arguesthat in the emerging post-conflict situation social work asa profession needs to operationalize a view of social justicethat acknowledges social and cultural diversity in order toredefine the profession itself and direct its relationship toboth the state and civil society.     

Determinants of outcome in the pathways through care for children hearing voices

Auditory hallucination, or hearing voices, is generally associated with psychopathology. In psychiatry it is inter-preted as a symptom of an illness, with no connection to the individual's life history. Voice hallucinations in childhood occur in a variety of contexts and have variable long-term outcomes. Little is known about the course of the experience. In this study, 80 children and youngsters hearing voices were interviewed on four occasions over a period of three years about the content of the voices and their overall experience of voices, focusing on the determinants for a promising outcome in the pathways through care. The results indicate that the need for care in the context of the experience of voices is associated not only with high levels of problem behaviour and associated negative symptoms of psychosis, but also, independently, with an appraisal of the voices in terms of anxiety, depression, dissociation and frequency of occurrence. In 60 per cent of the participants the voices disappeared during the three-year research period. The relationship between the disappearance of voices and the course of mental health treatment is, however, ambiguous.     

Cash‐Flow Based Dynamic Inventory Management

Small‐to‐medium‐sized enterprises (SMEs), including many startup firms, need to manage interrelated flows of cash and inventories of goods. In this study, we model a firm that can finance its inventory (ordered or manufactured) with loans in order to meet random demand which in general may not be time stationary. The firm earns interest on its cash on hand and pays interest on its debt. The objective is to maximize the expected value of the firm's capital at the end of a finite planning horizon. The firm's state at the beginning of each period is characterized by the inventory level and the capital level measured in units of the product, whose sum represents the “net worth” of the firm. Our study shows that the optimal ordering policy is characterized by a pair of threshold parameters as follows. (i) If the net worth is less than the lower threshold, then the firm employs a base stock order up to the lower threshold. (ii) If the net worth is between the two thresholds, then the firm orders exactly as many units as it can afford, without borrowing. (iii) If the net worth is above the upper threshold, then the firm employs a base stock order up to the upper threshold. Further, upper and lower bounds for the threshold values are developed using two simple‐to‐compute myopic ordering policies which yield lower bounds for the value function. We also derive an upper bound for the value function by considering a sell‐back policy. Subsequently, it is shown that policies of similar structure are optimal when the loan and deposit interest rates are piecewise linear functions, when there is a maximal loan limit and when unsatisfied demand is backordered. Finally, further managerial insights are provided with extensive numerical studies.     

Response of urban tree DBH to fast urbanization: Case of coastal Zhanjiang in south China

Urban Ecosystems - Urban trees perform various ecosystem services, and tree DBH (trunk diameter at breast height, 1.3 m above the ground) can act as a surrogate measure of these important...     

Social welfare in the light of topic modelling

With an increased focus on social well-being in response to a burgeoning global economy exposing the weaknesses of social welfare policies, research output in the field has grown exponentially. Keeping track of the evolving research themes proves difficult due to the steady rise in the number of studies published in the interdisciplinary field of social welfare. Therefore, researchers need a comprehensive overview to confirm the current shape of the field based on the published research. Using a latent Dirichlet allocation algorithm as a topic modelling technique, this study identified 12 prominent themes from more than 10,000 research outputs on social welfare published from 2000 to 2020 in Scopus-indexed journals. Such an exploratory text-mining approach to literature review provides broad insights into the diversity of research and may serve as a foundation for further in-depth studies. Identifying these 12 thematic areas and their sub-themes allows us to articulate the complexity and diversity of social welfare issues, which go far beyond the field of well-established welfare economics or social work. The study shows that the topic of ‘social welfare’ has not only evolved over time but has significantly broadened its meaning. It can no longer be solely synonymous with institutional social security. We contend that research in this area needs to take into account a broader and more systematic range of determinants constituting the dynamic character of social welfare.