Tooth formation and the mandibular symphysis during the first five postnatal months

Schedules based on tooth development are useful in age assessments of children, but in early infancy they are based on only a few studies. The radiographic appearance of the mandibular symphysis during the first postnatal months has not gained attention. The present study describes the formation of teeth and the development of fusion between the mandibular halves during the first five postnatal months, as seen in panoramic tomograms taken in medicolegal autopsies of 29 ethnic Finns, 19 boys and 10 girls, at the Department of Forensic Medicine, University of Helsinki. In the majority of the infants, the criteria of sudden infant death (SID) were fulfilled. The stages of tooth formation used were those applied by Moorrees et al. with one modification (Nystr?m et al.). Mineralization of all primary teeth proceeded rapidly during the first postnatal months, the change being on average two developmental stages in four months. Considerable variation in tooth development existed in infancy. The mandibular halves were separated at birth. Complete fusion had occurred in the majority of infants aged four months, and the tomograms of the remaining infants showed a thin vertical line in a part of the symphysis. The marked changes, which during the first postnatal months occur in the radiographical appearance of the mandibular symphysis, and in the formation of primary teeth, provide valuable information for age assessments of infants.     

Comparing Affective Commitment in the Public and Private Sectors: A Comprehensive Test of Multiple Mediation Effects

Employees’ organizational commitment is associated with a number of positive outcomes, such as employee motivation, job satisfaction, productivity, and retention. But previous research has suggested that there may be important sector differences in both commitment and its explanations, yet results are very mixed. We study sector differences in affective organizational commitment among 1,043 public and private office workers who perform very similar tasks across sectors, testing the influence of factors thought to explain commitment and expected to vary between the sectors. We propose that the mixed results are due to different variables mediating the relationship between sector and organizational commitment. Conducting a multiple mediation analysis, we find that more hierarchy negatively mediates the relationship between public sector employment and organizational commitment. On the other hand, the relationship between public sector employment and organizational commitment is positively mediated by public service motivation and participatory management. This highlights the importance of not only studying simple sector differences, but also including relevant individual and organizational-level variables that can explain the mechanisms behind such differences.     

How to increase citizen coproduction: replication and extension of existing research

ABSTRACT

The value of coproduction—the joint productive efforts by regular producers, such as teachers, and consumer producers, such as parents, in helping children to learn—has been recognized for some time. However, strong empirical evidence of how these benefits can be achieved is scarce, and recent research has found mixed results. A new randomized field trial replicates elements of previous studies and extends them by using an additional age-appropriate outcome measure. Methodologically, the results illustrate the challenges of carrying out replication studies because when target groups change, outcome measures also often change. Substantially, the findings suggest that a government initiative providing parents with materials and information to enhance parents’ coproduction efforts can be extended to a broader target group of parents. Together, the findings illustrate how findings from single studies should be generalized with caution and the value of working systematically with replications and extensions.     

Public Value Dimensions: Developing and Testing a Multi-Dimensional Classification

Further integration of the public value literature with other strands of literature within Public Administration necessitates a more specific classification of public values. This article applies a typology linked to organizational design principles, because this is useful for empirical public administration studies. Based on an existing typology of modes of governance, we develop a classification and test it empirically, using survey data from a study of the values of 501 public managers. We distinguish among seven value dimensions (the public at large, rule abidance, balancing interests, budget keeping, efficient supply, professionalism, and user focus), and we find systematic differences between organizations at different levels and with different tasks, indicating that the classification is fruitful. Our goal is to enable more precise analyses of value conflicts and improve the integration between the public value literature and other parts of the Public Administration discipline.     

Policy Implications of Limiting Immigrant Concentration in Danish Public Schools

Immigrant students in Denmark on average perform worse in lower secondary school than native Danish students. Part of the effect may not stem from the immigrant students themselves, but from the student composition at the school. From a policy perspective, the latter aspect is quite interesting since it is more feasible to change student composition in schools than the socioeconomic status of the individual students. This article describes theoretically the circumstances under which total student achievement can be increased by reallocating certain groups of students. Empirical analyses of Danish register data of more than 40,000 students suggest that the gain in total student achievement by reallocating immigrant students is minor. The educational outcome of immigrant students can however, ceteris paribus, be increased, at minimal expense to the majority of native Danish students' educational outcome, by limiting the share of immigrant students at grade level at any one school to less than 50 percent. The policy implications of this finding are discussed.     

Dynamics of Public Service Motivation: Attraction‒Selection and Socialization in the Production and Regulation of Social Services

The literature on public service motivation (PSM) has typically focused on the relationship between motivation and public/private sector of employment, while the character of the work being performed has been neglected. Using panel surveys with pre‐ and postentry measures of PSM among certified Danish social workers, this article provides a unique design for investigating PSM‐based attraction?selection and socialization effects with respect to the choice between work related to service production or service regulation (controlled for public/private sector of employment). The article shows that the PSM profiles of social work students predict their preference for one of the two types of work tasks but do not predict first employment in the preferred job. Conversely, postentry shifts in social workers’ PSM profiles result from a complex interplay between influences from both work task and sector.     

Sources of local government extractive capacity: The role of trust and pre‐colonial legacy in the case of Uganda

Local government extractive capacity, as measured by the amount of graduated personal tax (GPT) collected relative to district wealth and population and, more qualitatively, as reflected in the nature of enforcement, varies considerably in Uganda. This article explores the reasons for this variation, first by investigating aggregate data at the cross‐district level, using data on taxation as well as survey data from the Afrobarometer, second, by a focussed comparison of two districts, one with high‐ and one with low‐extractive capacity. I find that generalised trust can explains some of the variation in extractive capacity across districts. The case studies trace the differences in trust and extractive capacity back to pre‐colonial rule; the better performing district having had centralised rule, a tradition of tax‐payment and a higher degree of social cohesion, while the poorer performing district had a more fragmented and less cohesive history of governance. The article thus points to the importance of understanding institutional path dependencies when assessing the feasibility of reform. Copyright © 2009 John Wiley & Sons, Ltd.