(M,S)-optimal row-column designs

Row-column designs may be considered to have two blocking schemes, namely the treatments by rows and treatments by columns component block designs. The (M,S)-optimality criterion is applied to row-column designs, and che connection between the (M,S)-optimal design and its component block designs is demonstrated.     

Integer-valued autoregressive processes with periodic structure

In this paper the periodic integer-valued autoregressive model of order one with period T, driven by a periodic sequence of independent Poisson-distributed random variables, is studied in some detail. Basic probabilistic and statistical properties of this model are discussed. Moreover, parameter estimation is also addressed. Specifically, the methods of estimation under analysis are the method of moments, least squares-type and likelihood-based ones. Their performance is compared through a simulation study.     

The power of discourse: Michel Foucault and critical theory

Abstract

The debate that contrasts Marxism and the work of Michel Foucault often overlooks that both projects share a political and ethical commitment. Both have moreover engaged that commitment by challenging what Marx called ‘traditional ideas’, viewing them as historically compilcit with the exercise of power. This ‘radical rupture’ with traditional ideas has been the hallmark of the critical theory project since The Communist Manifesto. By challenging traditional notions of power and language, however, Michel Foucault went further than the Marxist tradition in carrying out the critical theory project. Foucault's alternative ideas of discourse/practice and of power as ‘positive’ are moreover intricately linked in a way that has not been sufficiently appreciated. This is evident in a genealogy of Foucault's early work, where neither notion is able to take hold in the absence of the other. It only after The Archaeology of Knowledge, where Foucault rethought the relationship of language to reality, that he was able to formulate the notion of power as positive in works to come. This link should cause us to rethink our relationship to Foucault's work, of it to Marxism, and of the critical theory project to the power.     

Netzwerkberatung in Clustern

Inter-organizational networks increasingly become clients in consulting processes. At the same time inter-organizational relations and networks are essential components of regional clusters. On the basis of the differences between consulting organizations and consulting networks, it will be argued that network consulting in clusters requires at least a two level process approach that focuses on the level of inter-organizational networks in a cluster context and the level of the regional cluster itself. Based on a long-term and intensive involvement in researching and consulting an emergent regional cluster in the field of optics, we gained insights into the particularities of consulting networks in clusters. The paper contributes to the emergent research on network consulting in general and on consulting such networks in regional clusters in particular.     

Learning Clinical Practice by Simulation in Law and Social Work

This paper discusses the development and evaluation of a package that was designed to simulate the Family Court of Australia. The origins of the simulation derive from the problems associated with access to the Family Court as it is a closed court, and the need to examine the relationship between two professions that work in the Family Court. The point of the simulation was to examine the unexpected effects which may not be obvious from simple discussion of the subject. The simulation provided a situation where the less rational aspects of court work could manifest themselves. Law students found many new interpersonal problems when they were confronted with the idiosyncrasies of clients, and trainee counsellors found the intricacies of the law daunting.     

Correlational biases in mean response latency differences

Multifarious psychological constructs are indexed by the mean latency difference (MLD), the within-subject difference between mean response latency on two tasks. Two associations consistently emerge in mean latency data. Firstly, across subjects, mean latencies on distinct tasks are positively correlated. This correlation arises from individual differences in general rates of information processing that are a shared influence on response latency in diverse tasks. Secondly, across tasks, the mean and variance of mean latency are positively correlated. Compared to a simple task, a complex task has both a larger average mean latency and a larger variance of mean latency, across subjects. Taken together, these associations make the interpretation of the MLD problematic by biasing correlations between the MLD and (a) task mean latencies, (b) the average of the mean latencies, (c) external criteria, and (d) other MLDs. A variety of mean latency transformations were evaluated and, while they differed in their effectiveness, they did not satisfactorily rectify MLD biases. An alternative approach, focusing on scale invariant contrasts of within-subject response latency distributions, is introduced in the conclusion.     

Methodology for the Calculation of Annualized Incremental Risks in Systems of Dams

In the past few years, the field of dam safety has approached risk informed methodologies throughout the world and several methodologies and programs are appearing to aid in the systematization of the calculations. The most common way of implementing these calculations is through the use of event trees, computing event probabilities, and incremental consequences. This methodology is flexible enough for several situations, but its generalization to the case of systems of several dams is complex and its implementation in a completely general calculation methodology presents some problems. Retaining the event tree framework, a new methodology is proposed to calculate incremental risks. The main advantage of this proposed methodology is the ease with which it can be applied to systems of several dams: with a single risk model that describes the complete system and with a single calculation the incremental risks of the system can be obtained, being able to allocate the risk of each dam and of each failure mode. The article shows how both methodologies are equivalent and also applies them to a case study.     

Resilience in the Face of Disasters: Bridging Micro- and Macro-Perspectives

This paper discusses the use of risk and resilience theory to understand how individuals and communities respond to natural disasters that present ongoing developmental challenges to personal and collective well-being. In the past two to three decades, mental health workers have developed numerous disaster relief strategies; while economists have become expert at estimating risk. These develops are explored.