Outsourcing Manufacturing: Secure Price‐Masking Mechanisms for Purchasing Component Parts

This paper develops and tests a privacy‐preserving business process that supports the selection of a contract manufacturer by an original equipment manufacturer (OEM), and the determination of whether the OEM or the chosen contract manufacturer will procure each of the components to be used in the manufacture of the OEM's branded product. Our “secure price‐masking (SPM)” technology contributes to procurement theory and practice in four significant ways: First, it preserves the privacy of every party's individual component prices. Second, SPM assures that the contract manufacturers will bid their own private purchase cost (i.e., not add a margin to their cost). Third, SPM is not invertible; i.e., none of the participants can “solve” for the private inputs of any other participant based on its own inputs and the outputs provided to it by SPM. Fourth, the posterior distribution of any other participant's private inputs is practically indistinguishable from its prior distribution. We also describe the results of a proof‐of‐concept implementation.     

GENDER DIFFERENCES IN JOB AUTONOMY:

This research investigates the impact of gender, occupational segregation, and authority position on various forms of job autonomy. The empirical analysis was guided by theoretical concerns over the relevance of occupational characteristics and authority position in explaining the gender gap in job autonomy. Ordinary Least Squares regression results show that after taking various individual and employment-related factors into account, authority position, but not female-dominated occupation, explains a large portion of the gender gap in the degree of job autonomy. Furthermore, logistic regressions indicate that no gender differences in the likelihood of having any of five components of job autonomy remain, after taking all other factors in the model into account. It is concluded that authority position at work is more instrumental in explaining the gender gap in job autonomy than the gender composition of occupations.     

Combination of a structured aerobic and resistance exercise improves glycaemic control in pregnant women diagnosed with gestational diabetes mellitus. A randomised controlled trial

Problem

Gestational diabetes mellitus, defined as any carbohydrate intolerance first diagnosed during pregnancy, is associated with a variety of adverse outcomes, both for the mother and her child.

Parental retirement timing: the role of unanticipated events in the lives of adult children

Although anecdotal evidence of older parents postponing retirement to financially support their grown children is common, the empirical evidence is scarce. In this paper, we use data from the 1992 to 2010 waves of the Health and Retirement Study to identify a broad set of pivotal events in the lives of adult children. First, we determine whether these events affect subsequent financial transfers from parents to children over multiple years. Next, we determine whether those events that result in subsequent transfers also shift parental retirement expectations. Finally, we quantify the impact of the unexpected children’s events on retirement realizations, moving beyond the correlational analyses in prior literature. Our findings show that a child’s move out of a parental home decreases both expectations and realizations of working after age 65. The magnitude of this effect is similar to that of an own health shock experienced during pre-retirement years.     

Occupational Structure and Employment. An International and Interregional Comparison

ABSTRACT: This paper attempts to describe past experience on the occupational structure and employment in order to better understand what has happened both in major developed countries and in different parts of Italy over the last 20 years. After a brief resumi of other studies on this subject, the occupational structure of the major OECD countries and of the Italian province is examined. The results of a discriminant analysis carried out indicate that the polarization theory can be considered valid only for industry, but not for the entire economy. Some traditional occupations result as having a positive link with employment development, whereas high-tech occupations are not significant, or have a negative sign.     

Male-Female Power Differences at Work: A Comparison of Supervisors and Policymakers*

This study estimates differences in access to power positions and the degree to which supervisors and policymakers exercise work power among women and men. The relative importance of sex and other relevant characteristics in determining the acquisition of supervisor and policymaker positions is assessed. Furthermore, the attainment of supervisory authority and strategic power of male and female supervisors and policymakers is analyzed. The results of logistic regression analyses suggest that regardless of other characteristics men have significantly more access to supervisor and policymaker positions than women. Nevertheless, ordinary least squares regression analyses demonstrate that once individuals are in supervisory or policy-making positions, sex is not an important determinant of the degree of work power. Additional results indicate that occupational status (evaluated by Duncan's Socio-Economic Index) but not sex segregation by occupation affects the acquisition of work power.     

Live together: does culture matter?

Review of Economics of the Household - This paper studies the role of culture in determining the decision to live together (as a married or unmarried couple). To examine this issue, we utilize data...     

The mass class and teaching assistants: A case for discussion exercises

Sociology courses, particularly introductory courses, with 200 or more students are increasingly being offered in U.S. colleges and universities. Within the “mass class” structure, teaching assistants are often utilized to instruct students in smaller discussion sessions. This creates unique conditions of instruction for both professors and teaching assistants. For instance, professors are faced with coordinating teaching assistants’ activities, while teaching assistants need to develop skills relating to provoking discussion. Both must deal with effects of a hierarchy of instruction. After discussing these conditions we present structured classroom exercises that focus on sociological concepts typically presented in introductory courses to help teaching assistants create an engaging learning experience, attain teaching skills, and facilitate the professor’s coordination of instruction.     

Order test for high-dimensional two-sample means

We propose a new method to test the order between two high-dimensional mean curves. The new statistic extends the approach of Follmann (1996) to high-dimensional data by adapting the strategy of Bai and Saranadasa (1996). The proposed procedure is an alternative to the non-negative basis matrix factorization (NBMF) based test of Lee et al. (2008) for the same hypothesis, but it is much easier to implement. We derive the asymptotic mean and variance of the proposed test statistic under the null hypothesis of equal mean curves. Based on theoretical results, we put forward a permutation procedure to approximate the null distribution of the new test statistic. We compare the power of the proposed test with that of the NBMF-based test via simulations. We illustrate the approach by an application to tidal volume traces.