The Structured Process Modeling Theory (SPMT): a cognitive view on why and how modelers benefit from structuring the process of process modeling

After observing various inexperienced modelers constructing a business process model based on the same textual case description, it was noted that great differences existed in the quality of the produced models. The impression arose that certain quality issues originated from cognitive failures during the modeling process. Therefore, we developed an explanatory theory that describes the cognitive mechanisms that affect effectiveness and efficiency of process model construction: the Structured Process Modeling Theory (SPMT). This theory states that modeling accuracy and speed are higher when the modeler adopts an (i) individually fitting (ii) structured (iii) serialized process modeling approach. The SPMT is evaluated against six theory quality criteria

The use of electronic voting systems in lectures within business and marketing: a case study of their impact on student learning

This article presents a case study of the impact on student learning of introducing an electronic voting system (EVS) into large‐group lectures for first‐year undergraduate students undertaking degrees in marketing and business systems. We discuss the potential for using EVS‐style interactive lectures in marketing and business programmes. We then describe how we planned the session and selected and implemented the EVS system. We go on to present an evaluative research project, which was undertaken on the innovation using case‐study methodology, and assess its impact on student learning. Data for the evaluation were collected through questionnaire and focus groups with a sample of students. The data were analysed using thematic analysis. The findings show how students perceived the use of EVS in large lectures and how their learning was affected. A ‘three‐fold typology’ emerged that explains how students related to the EVS and how their perceptions of EVS changed over time. The discussion links these findings to the literature on different paradigms of learning and teaching, using Renshaw’s framework, and examines how the EVS‐style lectures promote deep and active learning within the constructivist, social constructivist and metacognitive learning paradigms identified in Renshaw’s model. The conclusions show how the use of a user‐friendly EVS in large lectures motivates students, develops students’ cognitive and social learning skills, and improves learning effectiveness

Complex, Dynamic Combination of Physical, Chemical and Nutritional Variables Controls Spatio-Temporal Variation of Sandy Beach Community Structure

Sandy beach ecological theory states that physical features of the beach control macrobenthic community structure on all but the most dissipative beaches. However, few studies have simultaneously evaluated the relative importance of physical, chemical and biological factors as potential explanatory variables for meso-scale spatio-temporal patterns of intertidal community structure in these systems. Here, we investigate macroinfaunal community structure of a micro-tidal sandy beach that is located on an oligotrophic subtropical coast and is influenced by seasonal estuarine input. We repeatedly sampled biological and environmental variables at a series of beach transects arranged at increasing distances from the estuary mouth. Sampling took place over a period of five months, corresponding with the transition between the dry and wet season. This allowed assessment of biological-physical relationships across chemical and nutritional gradients associated with a range of estuarine inputs. Physical, chemical, and biological response variables, as well as measures of community structure, showed significant spatio-temporal patterns. In general, bivariate relationships between biological and environmental variables were rare and weak. However, multivariate correlation approaches identified a variety of environmental variables (i.e., sampling session, the C:N ratio of particulate organic matter, dissolved inorganic nutrient concentrations, various size fractions of photopigment concentrations, salinity and, to a lesser extent, beach width and sediment kurtosis) that either alone or combined provided significant explanatory power for spatio-temporal patterns of macroinfaunal community structure. Overall, these results showed that the macrobenthic community on Mtunzini Beach was not structured primarily by physical factors, but instead by a complex and dynamic blend of nutritional, chemical and physical drivers. This emphasises the need to recognise ocean-exposed sandy beaches as functional ecosystems in their own right

Induction of Strategies and Habits in Rats Through two Behavioural T-maze Paradigms

Two different behavioural paradigms in T-maze were developed with the aim to induce patterns of behavioural  persistence in rats. These new procedures were based not on traditional asymmetric reinforcement  methodology, but on a modified Krechevsky paradigm using olfactory stimuli, where we found rats  spontaneously developed patterns of behavioural persistence – or behavioural “strategies” - with less than  1% probability of these occurring by chance. Rats predominantly developed spatial position (win-stay)  strategies, but also spatial alternation (win-shift) strategies, olfactory strategies, and, to a minor degree,  olfactory alternation strategies. Spatial alternation behaviour was significantly more frequent during early  (first 40 trials) than during late testing. Position bias (spatial win-stay behaviour) increased gradually with  the number of trials and was significantly increased in late (over 120 trials) compared to early testing. In  the second paradigm, habits were induced in rats using a forced-choice procedure. After 100 forced-choice  trials of running to the same side in a T- or Y-maze, the rats showed a significant propensity for this side  when allowed to choose freely, compared to the situation in which only one forced-choice trial had been  performed. Ten forced trials were not sufficient to induce this habit. Both paradigms may be useful for modelling  aspects of human habit formation and for behavioural neuroscience experiments.

CHORUS Deliverable 4.5: Report of the 3rd CHORUS Conference

The third and last CHORUS conference on Multimedia Search Engines took place from the 26th to the 27th of May 2009 in Brussels, Belgium. About 100 participants from 15 European countries, the US, Japan and Australia learned about the latest developments in the domain. An exhibition of 13 stands presented 16 research projects currently ongoing around the world

Behavioral types in programming languages

A recent trend in programming language research is to use behav- ioral type theory to ensure various correctness properties of large- scale, communication-intensive systems. Behavioral types encompass concepts such as interfaces, communication protocols, contracts, and choreography. The successful application of behavioral types requires a solid understanding of several practical aspects, from their represen- tation in a concrete programming language, to their integration with other programming constructs such as methods and functions, to de- sign and monitoring methodologies that take behaviors into account. This survey provides an overview of the state of the art of these aspects, which we summarize as the pragmatics of behavioral types