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Drawing on the literature on active objects and combining it with an ethnographic study of engineering work, this paper offers an alternative and complementary understanding of the problem of control in knowledge-intensive work. This problem concerns largely the question of how creative processes of knowing are enabled on behalf of the organization. The dominant response to this question revolves
Constraining past changes in the strength and configuration of the geomagnetic field provides a valuable perspective on the processes that govern the geodynamo. Here we update a modelled dipole tilt reconstruction for the last 9000 years by using palaeomagnetic records that originate from globally well-distributed sites. Some features predicted by earlier dipole models become more distinct due to
SynopsisReduction of gold(III) complexes by thiocyanate takes place via rapid substitutions at gold(III), followed by intramolecular, slower reductive elimination through attack by outer-sphere thiocyanate. A transition state with an S−S interaction between attacking and coordinated thiocyanate is suggested for the redox process.AbstractAbstract ImageKinetics for reactions between thiocyanate and SynopsisReduction of gold(III) complexes by thiocyanate takes place via rapid substitutions at gold(III), followed by intramolecular, slower reductive elimination through attack by outer-sphere thiocyanate. A transition state with an S−S interaction between attacking and coordinated thiocyanate is suggested for the redox process.AbstractAbstract ImageKinetics for reactions between thiocyanate and
In the wake of the war and occupation of Iraq, 2003–2004, international legal scholars struggled to understand and adequately describe the event and the law surrounding it. This study takes that situation of uncertainty as its point of departure, and it unfolds through an analysis of the material conditions and linguistic–rhetoric and affective–psychic registers through which the Administrator of In the wake of the war and occupation of Iraq, 2003–2004, international legal scholars struggled to understand and adequately describe the event and the law surrounding it. This study takes that situation of uncertainty as its point of departure, and it unfolds through an analysis of the material conditions and linguistic–rhetoric and affective–psychic registers through which the Administrator of
The need for a scientific formalism for product realization is the translation of a need onto a product which is developed right in time, at the right costs, and fulfills the specifications set out for the product. To achieve this, most existing methods focus on the customer, or on a key technology as the backbone of product development. In this paper, we claim that efforts must be directed toward
In this study, a new strategy for fault detection and isolation is presented. This strategy is based on the design of a Lüneburg observer which is implemented via pole placement using linear matrix inequalities. Two residuals are formulated based on the state estimation error in order to be utilized in detecting and isolating faults happened on the system. Fault detection problem solves by change
Laser Doppler velocimetry (LDV) measurement and large eddy simulation (LES) were used to study confined isothermal turbulent swirling flows in a model dump combustor. The aim was to gain deeper understanding of the flow and turbulence structures in dump combustors and to examine the capability of LES for prediction of turbulent swirling flows. A refractive index matching technique is used in the L
The Tyranny of Small Steps (TYST) behaviour has been investigated. Explained through a systemic perspective, the behaviour TYST is an unwanted change to a system through a series of small activities that may be independent from one another. These activities are small enough not to be detected by the 'surveillance' within the system, but significant enough to encroach upon the 'tolerance zone' of t
We propose a rational fabrication method for nanoimprinting moulds by scanning probe lithography. By wet chemical etching, different kinds of moulds are realized on Si( 110) and Si( 100) surfaces according to the Si crystalline orientation. The structures have line widths of about 200 nm with a high aspect ratio. By reactive ion etching, moulds with patterns free from the limitation of Si crystall
The main function of the reactor containment, i.e. to ensure tightness at a major internal accident, depends directly on the prestressing system. To secure that the prestress level is sufficient, the tendon force has been measured during the whole time of operation. The general results from these measurements show that the loss of prestress 30 years after tensioning is between 5 and 10%. This is m
By the use of wavelength-modulation diode laser spectroscopy, water vapor and oxygen are detected in scattering media nonintrusively, at 980 nm and 760 nm, respectively. The technique demonstrated is based on the fact that free gases have extremely sharp absorption structures in comparison with the broad features of bulk material. Water vapor and oxygen measurements have been performed during the
Methods for calculation of thermal conditions and heat loss parameter for an underground tunnel into surrounding sub-soil were developed in the first half and in the middle of the 20th century [18-20], when the study of complex heat-and mass exchange processes between underground tunnel, sub-soil and outdoor air was started. In a tunnel it is important to meet specific microclimate parameters such
alpha-Phenyl-tert-N-butyl nitrone (PBN), a potent reactive oxygen species (ROS) scavenger, has shown robust neuroprotective properties in several models of acute brain injury, although not previously evaluated in traumatic brain injury (TBI). In this study, we assessed the potential efficacy of PBN in a weight drop model producing a controlled cortical contusion. Sham operation, mild or severe inj
Introduction: The central question this study sought to answer was whether the team members of Strategic Crisis Teams (SCTs) participating in mass-casualty incident (MCI) exercises in the Netherlands learn from their participation. Methods: Evaluation reports of exercises that took place at two different times were collected and analyzed against a theoretical model with several dimensions, looking
The aim of this study is to analyse how the study group method aids student entrepreneurs when developing entrepreneurial knowledge through the experiential learning process, and why it is important to stimulate peer learning in an experiential entrepreneurship education context. Due to a more experiential perspective on learning, the environment in which students learn, what students learn and whThe aim of this study is to analyse how the study group method aids student entrepreneurs when developing entrepreneurial knowledge through the experiential learning process, and why it is important to stimulate peer learning in an experiential entrepreneurship education context. Due to a more experiential perspective on learning, the environment in which students learn, what students learn and wh
Rationalisering av arbetsmiljön i häststallar - Tävlings- och avelsstall Hästsektorn i Sverige idag håller på att växa och nästan 10 % av Sveriges befolkning kommer regelbundet i kontakt med hästar. Intresset för dessa djur ökar hela tiden, vilket innebär att allt fler människor även kommer att komma i kontakt med den dagliga skötseln av hästen. Vid skötseln av hästarna är tunga lyft och andra påfThe Horse Sector in Sweden today is growing and almost 10% of Sweden's population will be regularly in contact with horses. Interest in these animals is increasing all the time, which means that more people will also get in touch with the daily care of the horse. In the management of horses is heavy lifting and other strenuous movements regular. Something that has been overlooked in the horse
The study of the naturalization decision process have gained more attention in the field of economics and migration in recent years. This primarily relates to examining whether certain contextual and structural socioeconomic characteristics can explain the probability for immigrants of becoming citizens in their new country. However, there have been little research on this decision process in an h
