An adaptation of the EOQ formula for JIT quasi-pull system production

This research demonstrates for the first time that in a just-in-time (JIT) quasi-pull production environment, a model adapted from the Economic Order Quantity and made up of two specific formulas can be employed for calculating an optimised lot size. The assumptions of our model are: a low level of defects, and insignificant shortage backordering and failure of the equipment. JIT quasi-pull production is the state typically reached by many manufacturing companies because it is almost impossible to achieve zero set-ups and zero work-in-process (WIPs) even in the best Lean Production implementations. In this model, finished products are shipped at once in a JIT way. The two developed formulas are specialised: one for balanced stations/processes and the other for unbalanced stations; the formulas allow calculation of an optimised lot size. Several applications of the formulas have been tested and discussed through a case study. Findings demonstrated that the optimised quantity of a lot size has to be smaller than the customer’s daily demand for the product. Moreover, in case of unbalanced stations with long cycle times, the formula forces the company to reduce its set-up times and the cycle times. The new model will be of interest to practitioners who are seeking a way to balance the costs of set-ups and the cost of holding some WIPs and offers interesting avenues for new research.     

Peers,proactivity, and problem-solving: A multilevel study of team impacts on stress appraisals of problem-solving demands

ABSTRACT

To date, there is a paucity of research on team-level impacts on the individual stress appraisal process despite the recognised role of teams for solving problems. Applying a multilevel approach, this study investigates the cross-level impact of team problem prevention behaviours on employee stress appraisals of problem-solving demands. It was hypothesised that team problem prevention would moderate the individual-level relationship between problem-solving demands and stress appraisals. Data were collected from 43 work teams comprised of 192 team members including all team leaders who also provided evaluations of their team’s problem prevention behaviour. Results supported the hypothesised cross-level moderating effects on challenge appraisal, but not threat appraisal. As one of the first studies to demonstrate that stress appraisals are impacted by the group, not just by individual factors, the results support a multilevel conceptualisation of stress appraisals. The findings also highlight implications for practice, broadening the scope of possibilities for stress management interventions to utilise team-level strategies such as leadership development programmes and/or team building initiatives.     

Correction to: Joint and conditional dependence modelling of peak district heating demand and outdoor temperature: a copula-based approach

Statistical Methods & Applications - This paper examines the complex dependence between peak district heating demand and outdoor temperature. Our aim is to provide the probability law of heat...     

Does accounting regulation enhance corporate governance? Evidence from the disclosure of share-based remuneration

Accounting for stock options and share-based remuneration is a controversial issue. The purpose of this study is to explore the impact of the mandatory adoption of IFRS 2 on accounting for share-based remuneration by Italian listed companies. The requirements under this standard could have relevant implications for corporate governance as IFRS 2 is expected to reduce the information asymmetry that may exist between corporate insiders and outsiders regarding such remuneration. Empirical evidence confirms that overall disclosure in annual reports concerning the costs of remuneration plans has increased following the adoption of IFRS 2, although some cases of lack of disclosure have also been found. We find that this change in accounting regulation has contributed towards revealing the ‘true’ cost of share-based remuneration to minority shareholders and other investors, together with some evidence of creative accounting surrounding the substance over form principle.     

Social networks and getting a home: Do contacts matter?

Under what conditions does one find a new home via one's social network? Does the way in which a house is acquired affect how satisfied one is with the house? We formulate hypotheses on the characteristics of personal networks, the context of the move and their effect on those who attain a house through informal channels and how satisfied they are with the new home. We use a representative dataset from the Netherlands (the Survey of the Social Networks of the Dutch, SSND, n = 1007) to test our arguments. Our results show that buyers with more diverse social networks and renters with larger social networks are more likely to find their home via social contacts. However, finding a home through an informal channel does not enhance their satisfaction with the house that is found.     

Do you see me? The complex experiences of women of color MSW students

Universities have increased the number of female students of color. However, inconsistency remains in terms of the number of women of color in positions of power and privilege. This discussion attempts to forward the dialogue about the challenges as well as the resilience of female students of color based on the experiences of four female African-American students in a graduate social work program at a predominantly white institution (PWI). Participants shared their daily experience of isolation and exclusion in their graduate programs compared to their experience in Historically Black College or Universities (HBCUs). Participants also discussed the divide that exists in institutions, as well as the sustaining forces and implications for education and research.     

WELFARE LEAVERS AND RETURNERS

This study investigates a random sample of people who left welfare and a similar sample who returned to welfare in a mid-Atlantic state in 2002. Findings show that child-care difficulties are important barriers to employment and that they are bound together with other conditions of poverty such as adverse neighborhood conditions and other deprivations. Child care provision becomes difficult when neighborhoods are infested with drugs or guns or when caregivers must spend too much time finding the means to pay bills or rent and put food on the table. For the poorest groups, all these conditions negatively impact quality of life. The study's findings suggest social policy revisions that emphasize programs to improve the children's neighborhood environment and means of socialization, supplement caregivers’ income to levels sufficient to pay for child care, and remove inadequacies or inconsistencies in government child care provision.     

Assessment of Intimate Partner Violence by Child Welfare Services

The purpose of this study was to describe policy and practice with respect to the assessment of intimate partner violence in a sample of child welfare agencies located throughout the United States and to examine the relationship of contextual characteristics and assessment practices. Telephone interviews were conducted with key informants from child welfare agencies. A snowball interviewing strategy was used to identify the best informant in each agency. Almost all of the participating agencies conducted some assessment of intimate partner violence, with most reporting that the majority of screening or assessment occurred during investigation of referrals. However, only 43.1% reported that all of the families referred to the child welfare system were assessed for intimate partner violence, and 52.8% indicated they had a written policy pertaining to screening and assessment of the problem. There was little relationship between county or agency characteristics and assessment practices. Additional research is needed to determine factors that influence assessment practices and to identify strategies to support and extend efforts to identify intimate partner violence and provide appropriate services for families in the child welfare system.     

Editorial

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