32 research outputs found
Comment on "The influence of planetary attractions on the solar tachocline" by Callebaut, de Jager and Duhau
Callebaut et al. (2012)'s claim that Scafetta (2010)'s results about a correlation between 20-year and 60-year temperature cycles and the orbital motion of Jupiter and Saturn were not confirmed by Humlum et al. (2011) is erroneous and severely misleading. Also Callebaut et al. (2012)'s absolute claim that a planetary influences on the Sun should be ruled out as a possible cause of solar variability is not conclusive because: (1) their calculations are based on simplistic classical Newtonian analytical mechanics that does not fully characterize solar physics; (2) the planetary theory of solar variation is supported by empirical findings. We show that both claims are already questioned in the scientific literature
One-arm maximal strength training improves work economy and endurance capacity but not skeletal muscle blood flow
Maximal strength training with a focus on maximal mobilization of force in the concentric phase improves endurance performance that employs a large muscle mass. However, this has not been studied during work with a small muscle mass, which does not challenge convective oxygen supply. We therefore randomized 23 adult females with no arm-training history to either one-arm maximal strength training or a control group. The training group performed five sets of five repetitions of dynamic arm curls against a near-maximal load, 3 days a week for 8 weeks. This training increased maximal strength by 75% and improved rate of force development during both strength and endurance exercise, suggesting that each arm curl became more efficient. This coincided with a 17-18% reduction in oxygen cost at standardized submaximal workloads (work economy), and a 21% higher peak oxygen uptake and 30% higher peak load during maximal arm endurance exercise. Blood flow assessed by Doppler ultrasound in the axillary artery supplying the working biceps brachii and brachialis muscles could not explain the training-induced adaptations. These data suggest that maximal strength training improved work economy and endurance performance in the skeletal muscle, and that these effects are independent of convective oxygen supply
Technoeconomic evaluation of the major telecommunication investment options for European players
This article summarizes the major results from European projects drawing final conclusions and recommendations from the technoeconomic evaluation of three telecommunications market studies. It presents an analysis addressing a wide range of crucial telecommunications questions debated today. The business cases are: seamless mobile IP service provision, 3G mobile virtual network operators (MVNO), and fixed networks for broadband IP services. Extensive market analysis has been carried out for modeling demand, penetrations, and tariff structures for new mobile services and broadband services as an input to the business cases. Results show that over a 10-year study period, UMTS business is profitable in most cases for established operators with reasonable market share. The 3G MVNO business case is profitable under typical conditions when MVNO yields about 10 percent penetration, depending on the country type. Provision of fixed broadband services with a fiber to the curb solution is viable in dense urban and urban areas, but not in suburban environments, while fiber to the home is viable only in dense urban areas, despite the selection of protocol (ATM vs. Ethernet). Furthermore, broadband wireless access (BWA) systems, in dense urban and urban areas, show quite promising economic results. © 2006 IEEE
Southern Saami Language and Culture—Between Stigma and Pride, Tradition and Modernity
In this chapter, I will present an analysis of how a Southern Sámi identity is performed in our late modern society, first and foremost how this identity is expressed through the use—or omittance—of the Southern Sámi language. It has been pointed out that it is more or less a miracle that Southern Sámi is still a living language. In my chapter, I will try to demonstrate how some sociocultural and political factors through history have inhibited the use of this language, while other factors have supported—directly or indirectly—the transmission of this linguistic repertoire from one generation to another. The master story of the Southern Sámi language and culture is intimately connected to the general ‘climate of opinion’ when it comes to minority–majority relations in Norway. The position of the Sámi population today has in several ways been fundamentally changed, compared with how the Sámi were regarded by the Norwegian majority population well into the twentieth century, as a lesser and inferior people. Some of the main aspects of my analysis will be related to contrasts like stigma versus pride, tradition versus modernity—as these values are attached to the Sámi culture
But They Call Us the Language Police!’ Speaker and Ethnic Identifying Profiles in the Process of Revitalizing the South Saami Language, Culture and Ethnic Identity
The aim of this study has been to highlight the complexity of a linguistic community which has undergone two language shifts in less than one century. The different social actors are given a voice in this multiple environments. All these social actors and positions are important to take into consideration in future language planning. To strengthen the societal position of the language and culture, it is important to create learning resources and instruction programmes that are suited to all kinds of speakers and their linguistic and identity tangles. As Paine (op. cit.: 294) stated 15 years ago, the identity tangle consists of the question of how to be a Saami—and I could add: how to be enough Saami. How much Saaminess does one have to produce in the linguistic and ethnic markets to be able to claim linguistic and ethnic legitimacy? The growing group of new speakers is claiming legitimacy and authority on another basis than the traditional authenticity. In this way, they are creating parallel hierarchies and competing legitimacies