Good Effects of Bad Feelings: Negative Affectivity and Group Decision‐making

Extending the growing interest in the relationship between affect and workgroup processes, we propose that groups make better use of their distributed information and therefore make better decisions when group members are higher in negative affectivity. In an experiment, we studied the influence of negative affectivity when information was distributed among group members and when group members had fully shared information. Results indicated that negative affectivity indeed stimulates group information processing and decision quality when information is distributed among group members.     

Runtime and memory consumption analyses for machine learning R programs

R is a multi-paradigm language with a dynamic type system, different object systems and functional characteristics. These characteristics support the development of statistical algorithms at a high level of abstraction. Although R is commonly used in the statistics domain a big disadvantage are its runtime problems when handling computation-intensive algorithms. Especially in the domain of machine learning the execution of pure R programs is often unacceptably slow. Our long-term goal is to resolve these issues and in this contribution we used the traceR tool to analyse the bottlenecks arising in this domain. Here we measured the runtime and overall memory consumption on a well-defined set of classical machine learning applications and gained detailed insights into the performance issues of these programs.     

An Alternative Theoretical Explanation and Empirical Insights into Overordering Behavior in Supply Chains*

The beer game and the supply line underweighting theory are central to our knowledge of decision making in dynamic environments such as supply chains. The core of these theories is that people are incapable of recognizing the pipeline inventory and this is the main cause of overordering and dysfunctional behavior. This article identifies lacunae in the theoretical and empirical foundations of extant literature and proposes an alternate explanation, a “correction model,” explaining why overreactions occur. We adopt a multi‐method research design, comprising a field case study and laboratory experiments, to ground our findings. [Submitted: July 19, 2010. Revisions received: December 8, 2010; March 14, 2011. Accepted: March 28, 2011.]     

How organizational cognitive frames affect organizational capabilities: The context of corporate sustainability

We draw on the emerging literature on the micro-foundation of capability development to investigate the effects of the relative importance of corporate sustainability in a firm's organizational cognitive frame on the development of distinct organizational capabilities. Based on survey data from 124 Danish manufacturing firms and seven interviews, we find that the relative importance of corporate sustainability in a firm's organizational cognitive frame positively encourages the development of three organizational capabilities, namely, stakeholder integration, market sensing, and organizational learning. However, contrary to our expectation and reasoning, we find that the development of the strategic planning capability is negatively affected. Our findings provide novel empirical evidence and contribute to an improved understanding of the effect of a firm's organizational cognitive frame on the development of organizational capabilities.     

Orientierungsprozesse im Vertrauensdilemma. Beziehungskonstruktionen in Beratungen zur privaten Altersvorsorge

Financial advice given by consultants is crucial for retirement saving decisions. We argue that those willing to save are facing a dilemma since there is a widespread mistrust towards the financial industry while financial advice is indispensable for coping with complexity in the decision process. Exploring the case of the state-subsidized Riester-pension in Germany, we show that savers construct personal relationships with the advisor to deal with this complex dilemma in terms of theories on trust. Using a mixed-method design embracing both quantitative techniques—cross-sectional as well as longitudinal (fixed-effects) approaches—and qualitative evidence, we shed new light on old age saving decisions. In detail, the exploitation of longitudinal surveys (of GSOEP and the German SAVE Panel 2004–2010) and of 18 problem-centred interviews provides the following findings: (1) Retirement saving decisions often rely on pre-existing relationships to financial advisors. (2) The less alternative resources available, the more savers rely on these relationships. (3) Financial advisors use their existing relationships to sell pensions. (4) The qualitative material unveils different patterns concerning the decision-making process which are trusteeship, strategic alliance, and acceptable ad-hoc collaboration. Altogether, the widespread idea of private retirement saving resulting from an atomistic and rational planning of the future is an illusion.     

Drivers of biodiversity patterns in parks of a growing South American megacity

How urban habitats contribute to biodiversity conservation is a key challenge in a rapidly urbanising world. Urban parks can provide important habitats for native species, but previous studies are geographically biased; fast growing megacities, in particular in South America, are clearly understudied. To assess habitat functions and underlying drivers in parks of Santiago de Chile, we analysed the assemblages of wild growing plant species in two ubiquitous park habitat types (grasslands, wooded areas) in 15 parks (150 plots) along an urban-rural gradient. We first used linear contrasts to compare species richness, beta diversity and the proportion of introduced species. We then tested for the explanatory value of environmental variables operating at different spatial scales (plot, park, urban matrix). Unlike in most previous studies, biodiversity patterns were not related to the position of the parks on the urban-rural gradient. Introduced species, mostly from Europe, generally dominated both habitat types (>90 %). Socio-economic (population growth or density), but not spatial, variables were retained in most models. Maintenance intensity was most influential in predicting species assemblages, complemented by park age in wooded areas. A high proportion of European grassland species indicates a trend of homogenisation in park grassland at a cross-continental scale. We conclude that habitat functions of urban parks for native species that have been mainly demonstrated for Europe cannot be generalised to South American megacities. This highlights the need for innovative and locally appropriate conservation approaches (e.g., re-introduction of native species) to foster biodiversity functions in urban parks of South American megacities.     

NBUFR closure under the formation of coherent systems

Closure under the operation of forming coherent systems of independent components is a desirable property for a class of life distributions. We show that the NBUFR class possesses this property.     

Coaching als Befähigung

Coaching as an instrument of staff development is becoming increasingly popular. The different coaching concepts comprehend praxeological and methodological orientations, and their metatheoretical base often remains largely unreflected. This paper situates coaching as a distinct profession with a stand-alone approach within the sciences. In the sense that coaching processes transcend conflicts and presented topics on underlying needs attributed to significant connection points to the theories Johan Galtung and the “capability approach” resulting in the tradition of Amartya Sen and Martha Nussbaum. This is preceded by a meta-theoretical localization of the process of a praxeology of coaching.     

Killing the Golden Goose? Third Sector Organizations and Back‐to‐Work Programmes in Germany and the UK

Third sector, or not-for-profit, organizations have been viewed in many parts of Europe as agencies that can be harnessed by public policy programmes to support the socially excluded. Within the emerging mixed economy of welfare, third sector agencies offering training, support and employment for groups disadvantaged in the labour market provide an important example. This illustrates, from one specific field, the dynamics occurring at the interface between public and third sectors in the delivery of public policy goals. This article examines both the history of 'partnership regimes' in this field and the evolving local organizational arrangement. The developments in the contrasting welfare regimes of Britain and Germany, which exemplify different institutional traditions, are analysed. The potential impact of regulatory changes on the capacity of third sector work integration agencies to deliver policy goals is assessed in both countries using evidence from recent case study research. The analysis suggests that the emerging managerialist partnership structures are tending to convert third sector organizations into 'just in time' deliverers of poor programme outcomes in both welfare regimes while also eroding their distinctive potential to provide more than mere labour market integration.