An ArcGIS geodatabase called the Ancient Shoreline Database (ASD) was developed for the study and interpretation of ancient shorelines and shoreline displacement information. It was further divided into the Isolation Database (ISD) and Shoreline Landform Database (SLD) based on the characteristics of the available information. In the current study, observations related to the maximum extension of the Litorina Sea and the highest shoreline in Finland were carefully recorded and classified in the ASD. A total of 1625 shoreline observations were stored in the ASD, of which 106 were stratigraphic data points from dated isolation horizons (ISD) and the remaining 1519 were data points representing morphological shoreline observations (SLD). This paper describes the content of the ASD in terms of the variability and reliability of collated data points, but also introduces how modern LiDAR-based digital elevation models were utilized in validating the published observations as well as in interpreting new data points related to ancient shorelines from areas lacking information. The compiled ASD was used to reconstruct the diachronous maximum extension of the Litorina Sea and the highest shoreline of the Baltic Sea basin in Finland.

Purpose Building on a business network perspective, the paper addresses the following question: Why do firms move between cooperation and competition in the context of high-tech industry? Hence, the purpose of this study is to contribute to the understanding of the complex cooperation–competition interplay between actors in a business network. Design/methodology/approach A single case study within the information and communication technology industry is undertaken and illustrates the cooperation–competition interplay in projects of technology. Findings The authors discuss the implications of interdependence on relationship dynamics. The main argument is that business relationships survive despite periods of competition if interdependence is high. Thus, firms move between a state of cooperation and a state of competition within business relationships, rather than ending the relationships when starting to compete. Practical implications This study suggests that managers need to pay attention to how different degrees of interdependence lead firms to be embedded in cooperative or competitive forms of relationships. Originality/value The paper contributes to the ongoing debate about cooperation, competition and coopetition within international business and industrial marketing literature. An interesting aspect in the paper is the cooperation–competition interplay, which is associated with positioning. A centrally positioned actor will choose who to bring into the partnership, with positioning concomitantly changing from project to project. The willingness of being a central actor, i.e. a project leader, places traditional buyer–supplier partners in competition. Thus, cooperation and/or competition becomes contextual.

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Greater complexity in three-dimensional (3D) model structures yields more plausible groundwater recharge/discharge patterns, especially in groundwater/surface-water interactions. The construction of a 3D hydrostratigraphic model prior to flow modelling is beneficial when the hydraulic conductivity of geological units varies considerably. A workflow for 3D hydrostratigraphic modelling with Leapfrog Geo and flow modelling with MODFLOW-NWT was developed. It was used to evaluate how the modelling results for groundwater flow and recharge/discharge patterns differ when using simple or more complex hydrostratigraphic models. The workflow was applied to a study site consisting of complex Quaternary sediments underlain by fractured and weathered crystalline bedrock. Increasing the hydrostratigraphic detail appeared to improve the fit between the observed and simulated water table, and created more plausible groundwater flow patterns. Interlayered zones of low and high conductivity disperse the recharge/discharge patterns, increasing the vertical flow component. Groundwater flow was predominantly horizontal in models in which Quaternary sediments and bedrock were simplified as one layer per unit. It appears to be important to define the interlayered low-conductivity units, which can limit groundwater infiltration and also affect groundwater discharge patterns. Explicit modelling with Leapfrog Geo was found to be effective but time-consuming in the generation of scattered and thin-layered strata.