The problem frame approach allows to precisely pin the software development problems before starting to work on them, thus avoiding to solve the wrong problems. Furthermore, the problem frames allow to develop tailored methods and schematic solutions to handle the tasks required to solve the corresponding problems. In this paper we adopt this approach to study the problem of developing a large ...

Maximum likelihood (ML) estimation of categorical multitrait-multimethod (MTMM) data is challenging because the likelihood involves high-dimensional integrals over the crossed method and trait factors, with no known closed-form solution. The purpose of the study is to introduce three newly developed ML methods that are eligible for estimating MTMM models with categorical responses: Variational ...

While the aged as a group have better access to health care since the inception of Medicare, there are subsets of the population that are still vulnerable to large out-of-pocket expenses. The focus of this analysis is on those segments of the Medicare population which are particularly vulnerable to access problems due to their personal characteristics. In particular, using data from the Nationa...

BACKGROUND This article reports on the use of the 'neighborhood method' to measure the prevalence and basic characteristics of children who became separated from their parents or usual caregivers subsequent to an attack by the M23 militia group in North Kivu, Democratic Republic of the Congo. METHODS A two-stage household cluster survey was conducted in 522 households in North Kivu in August ...

Purpose. The Gudjonsson Suggestibility Scale (GSS; Gudjonsson, 1984, 1997) is a well-established forensic tool for measuring interrogative suggestibility. However, one restriction of this tool is that it requires an extensive testing procedure. The present study examined whether shorter versions of the GSS yield similar results as the original GSS procedure. Methods. One group (N 1⁄4 20) was gi...

Based on recent field survey data collected in three African countries, this study examines interfirm and inter-organizational collaboration in African industry. Three sets of interactions were analyzed namely: firm-firm linkages, including user-supplier and subcontracting relationships; firm-university linkages; and firm-industrial association linkages. Employing univariate and multivariate an...

The management of distributed software development projects presents many challenges. One of them happens right at the start of the project and consists of the allocation of tasks between remote teams. When allocating a task to a site, the project manager takes into account several factors such as technical knowledge of staff and proximity to the client. The project manager usually takes this d...

In this study, we tested the hypothesis, derived from the theorizing of Derryberry and Tucker (1994), that the mere enactment of approach or avoidance behavior, without concomitant pursuit of personal approach or avoidance goals, can independently moderate the scope (i.e., breadth or narrowness) of attention on both the perceptual and conceptual levels. SpeciWcally, we predicted that enactment ...

Abstrakt In this note we critically examine the current state of teaching of Discrete Simulation at our university. We consider the case study of one of the projects that students are expected to solve in the course. Three approaches are compared nonmodular resulting from the current approach, using Haskell, and using Reactive framework from C#. We conclude that functional approach can address ...