Jazz discometrics – A network approach

‘Discometrics’, a long neglected area of informetric studies was revisited in a network context. Cooperation between jazz musicians was analysed using the recent ‘Hirschian’ concepts of network informetrics. Partnership Ability Index (φ) was found to be a useful measure to characterize the way performers are embedded in their partnership network. Indications of some positive relations between φ and other ‘qualities’ of the performers were found.     

In the sign of Galileo: pictorial representation in the 17th-century Copernican debate

After Galileo had discovered the four moons of Jupiter in 1609 he became increasingly convinced that the Copernican, heliocentric system of the world was correct. However, this ran against the opinions of the Church and a large number of contemporary astronomers and natural philosophers. The ensuing development culminated in the condemnation of the Copernican system by the Church in 1616 and of Galileo himself, who had propagated the Copernican system in his Dialogue Concerning the Two Chief World Systems (1632), in 1633. Nevertheless, there was a constant debate about the right world system during the whole 17th century. Pictorial representation played an important role in it and the illustrations used as book frontispieces were a significant medium for the dispute.     

An integrated platform enabling optogenetic illumination of Caenorhabditis elegans neurons and muscular force measurement in microstructured environments

Optogenetics has been recently applied to manipulate the neural circuits of Caenorhabditis elegans (C. elegans) to investigate its mechanosensation and locomotive behavior, which is a fundamental topic in model biology. In most neuron-related research, free C. elegans moves on an open area such as agar surface. However, this simple environment is different from the soil, in which C. elegans naturally dwells. To bridge up the gap, this paper presents integration of optogenetic illumination of C. elegans neural circuits and muscular force measurement in a structured microfluidic chip mimicking the C. elegans soil habitat. The microfluidic chip is essentially a ∼1 × 1 cm² elastomeric polydimethylsiloxane micro-pillar array, configured in either form of lattice (LC) or honeycomb (HC) to mimic the environment in which the worm dwells. The integrated system has four key modules for illumination pattern generation, pattern projection, automatic tracking of the worm, and force measurement. Specifically, two optical pathways co-exist in an inverted microscope, including built-in bright-field illumination for worm tracking and pattern generation, and added-in optogenetic illumination for pattern projection onto the worm body segment. The behavior of a freely moving worm in the chip under optogenetic manipulation can be recorded for off-line force measurements. Using wild-type N2 C. elegans, we demonstrated optical illumination of C. elegans neurons by projecting light onto its head/tail segment at 14 Hz refresh frequency. We also measured the force and observed three representative locomotion patterns of forward movement, reversal, and omega turn for LC and HC configurations. Being capable of stimulating or inhibiting worm neurons and simultaneously measuring the thrust force, this enabling platform would offer new insights into the correlation between neurons and locomotive behaviors of the nematode under a complex environment.     

Empirical observations on New Public Management to increase efficiency in public research—Boon or bane?

New Public Management (NPM) was the catch phrase of the reforms in the public research and higher education sector for the last decades. The postulated effect of the NPM reforms is increased efficiency in governmental resource spending on the public higher education and research institutions. Though backed by theoretical considerations, this hypothesis has hardly been tested empirically. Using a unique dataset of German research units, this paper deals with the influence that NPM mechanisms have on research performance. Controlling for different university mission, it can be shown that both greater internal hierarchy (especially “strong presidents”) as well as greater operative flexibility for the researchers themselves increase research performance. Some of the variables, including the presence of research councils, have a positive effect on research efficiency under some definitions of research output. On the other hand, the introduction of resource accounting systems has a negative impact. All in all, we conclude that the public science sector reforms implemented in most of the Western economies were heading into the right direction by providing greater performance incentives and increasing allocative efficiency in resource spending. Also we provide some ideas of how NPM may be combined in order to construct a sensible governance system. We conclude that the mechanisms should be selected based on the mission of the university.     

List of Reviewers 2006

ASCTRACT

This study aims to analyze the potential and constraints of group-based extension approaches as an institutional innovation in the Vietnamese agricultural extension system. Our analysis therefore unfolds around the challenges of how to foster this kind of approach within the hierarchical extension policy setting and how to effectively shape and enable learning groups. The analysis draws on qualitative data from case studies of five newly established extension groups in Son La province, collected between 2007 and 2008. Content analysis was applied as the main analytical tool. The basic principles of group-based learning approaches are still underdeveloped, mainly due to a non-supportive institutional environment and a command-and-follow mentality. Extension groups suffer from an insufficient distinction between social processes and technical procedures. Finding an appropriate balance between enhancing leadership and supporting collective responsibility is identified as key to sustain groups. The research identified room for adjustments in group-organizational issues since the external institutional environment is hard to change. The particular value of this paper lies in addressing how to organize group-extension approaches in the context of reformed extension systems in a transitional socialist setting.     

Total kinetic energy production of body segments is different between racing and training paces in elite Olympic rowers

Total kinetic energy (TKE) was calculated for 28 Canadian national team Olympic rowers during training on water, comparing low-stroke rates (18–22 stroke/min) and high-stroke rates (32–40 stroke/min), using video analysis. Stroke duration was normalized to 100%, beginning and ending at the “catches”, with the drive phase occurring first and recovery second. Two discrete points were identified during the stroke, both occurring when the fingers had the same horizontal position as the ankles (i.e. mid-drive and mid-recovery). The ratios of recovery-to-drive TKE at these points for the entire body at low and high-stroke rates were 0.36 ± 0.34 and 1.26 ± 0.54 respectively. Significant differences were found for the lower leg, upper arm and forearm segments, and within the female groups. Low-stroke rate is a typical training pace and high-stroke rate is analogous to a race pace. This study demonstrates that TKE production during recovery in a race was not replicated during training. While training at low-stroke rates is vital for technique refinement, this study stresses the importance of training appropriately for the energy expenditure during high-stroke rate recovery. This is commonly overlooked by coaches and athletes.     

The means of managing momentum: Bridging technological paths and organisational fields

This paper examines how technological and organisational changes are mediated through different means of mutually monitoring and collectively coordinating technological developments in the field of semiconductor manufacturing. As collective practices, both monitoring and coordinating aim at generating momentum in order to stabilise or redirect technological paths in organisational fields. The empirical analysis of innovation practices in the field of semiconductor manufacturing technology shows that the means of managing momentum, above all roadmaps, conferences, and R&D consortia, influence and transform the development of new technologies as well as the social relations within the organisational field. The transformative capacity of these means is elaborated conceptually using Giddens’ theory of structuration.