Hierarchical linear modeling (HLM) has become increasingly popular in the higher education literature, but there is significant variability in the current approaches to the conducting and reporting of HLM. The field currently lacks a general consensus around important issues such as the number of levels of analysis that are important to include and how much variance should be accounted for at e...

Mainstream metamodelling approaches based on the OMG standards, such as EMF, have a fixed number of modelling levels. Despite their partial acceptance in industry, limitations on the number of levels has led to problems such as lack of flexibility and mixed levels of abstraction. Existing multilevel modelling approaches have already tackled these problems by providing features like deep modelli...

As the UML attempts to make the transition from a single, albeit extensible, language to a framework for a family of languages, the nature and form of the underlying meta-modeling architecture will assume growing importance. It is generally recognized that without a simple, clean and intuitive theory of how metamodel levels are created and related to one another, the UML 2.0 vision of a coheren...

For applications with high requirements on the confidentiality of data a level-based access control policy may be appropriate. Designing such security critical applications is a less understood issue and thus complicated task. To guide a security administrator or database designer and in order to simplify the design activity several guidelines and a powerful modeling technique are necessary. Th...

The present study tested whether a couple’s shared life history strategy predicts relationship satisfaction longitudinally and relationship dissolution. Through an integration of structural equation modeling and multilevel modeling, we found that a couple’s shared life history strategy: (1) directly predicted their average relationship satisfaction, (2) indirectly predicted the linear change in...

This paper seeks to advance research on interpersonal exchange relationships between supervisors, subordinates, and coworkers at work by integrating social exchange, workplace friendship, and climate research to develop a multi-level model. We tested the model using hierarchical linear modeling (HLM) with data obtained from a sample of 215 manager-employee dyads working in 36 teams. At the indi...

This paper discusses two ways to establish the connection between two levels in a multi-level model. The first approach uses normal associations and generalizations under the assumption that the multi levels are represented in one UML and OCL model. The second approach views a middle level model both as a type model and as an instance model and introduces operations to navigate between the type...

This paper explores the perceptions of employees of different ages regarding the flexibility they need at work (flexibility fit) and their engagement with work. Using 49,209 observations representing 183,454 employees in 22 different companies, we estimated a hierarchical linear model (HLM) to explain variation in employee engagement as a function of flexibility fit and age. Although flexibilit...