A COMPARISON OF DIRECT COST SAVINGS BETWEEN FLEXIBLE AUTOMATION AND LABOR WITH LEARNING

This paper compares flexible automation with labor‐intensive manufacturing processes in a batch production environment and considers learning, forgetting, inventory carrying costs, setup costs, production demand volume, previous production experience, and the proportion of material to labor cost. While flexible automation typically can reduce setup times, and therefore inventory carrying costs through smaller optimal batch sizes, the results of this research show that the effect of forgetting on relative cost savings is difficult to predict in some situations. When using optimal lot sizes in both the automated and labor environments, cost savings from flexible automation may be smaller than expected or may occur in different ways than anticipated.     

On Extending Russell and Krajewski's Algorithm for Economic Purchase Order Quantities*

Russell and Krajewski presented an optimal purchase order quantity algorithm that considered the effect of the transportation rate structure for less-than-truckload (LTL) shipments. The authors applied the Russell and Krajewski algorithm to a variety of freight classes and lengths-of-haul. Anomalous cases were found in which the freight rate schedule, when used with the suggested algorithm, resulted in incorrect order size decisions. In this comment, the authors consider the impact of these anomalies on the optimal order quantity and associated total costs. A procedure is presented to adjust the Russell and Krajewski algorithm to arrive at the optimal purchase order quantity and the lowest total annual cost.     

Food Banking and Food Insecurity in High-Income Countries

VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations - Food banks are a particular type of voluntary sector organization that bridges the government sector, private sector, and...     

Community-based accompaniment & social work—A complementary approach to social action

Accompaniment, or the intentional practice of presence, emphasizes processes and relationships over outcomes, with the ultimate goal of leveraging privilege and collectively changing destructive systems. Though not widely recognized in social work, accompaniment has been applied globally. Here, we outline an overview of accompaniment, including how it has been applied in social work literature and practice. We then propose community-based accompaniment as an approach to complement traditional models of social action as a necessary, yet accessible way to further advance community organizing in social work education and practice, and ultimately promote transformative social change.     

Trichotomic discounted utility

Theory and Decision - Recent evidence on intertemporal choice suggests that decision-makers may exhibit both increasing and decreasing impatience simultaneously, called inverse-S discounting. This...     

Delayed probabilistic risk attitude: a parametric approach

Theory and Decision - Experimental studies suggest that individuals exhibit more risk aversion in choices among prospects when the payment and resolution of uncertainty are immediate relative to...     

Toward a Fuller Understanding of Nonresident Father Involvement: An Examination of Child Support,In-Kind Support,and Visitation

The majority of studies of nonresident father involvement focus on either child support payments or visitation. However, nearly 60% of custodial parents receive in-kind (i.e., noncash) support of some form. Using data from a nationally representative sample of children with nonresident fathers (the Child Development Supplement of the Panel Study of Income Dynamics), we simultaneously investigate via a trivariate probit model the relationships among three aspects of father involvement: child support, in-kind support, and visitation. We find that these dimensions of involvement are positively related and highly intertwined with the strongest positive relationship being between in-kind support and visitation. Additionally, these aspects of involvement have different sets of determinants. Economic characteristics of the resident household are more frequently associated with the receipt of child support, while demographic characteristics of the child, mother, father and resident household are related to all three aspects of nonresident father involvement. Generally speaking, when differences in impacts of determinants vary for lower and higher income resident families, the differences are related to the receipt of child support. Fewer differences are observed with regard to in-kind support receipt or with visitation. Our model also measures how unobserved factors are related to these facets of involvement. Most notable across income groups is that unobserved factors are positively related for child support and in-kind support receipt for higher income resident households. This relationship is insignificant for lower income resident households.