Abandonement rates of patents in five European countries are studied. The time distribution of British patents can be described by a truncated Gauss' distribution, of Belgian patents by a Poisson's distribution. Appropriate models derived on the base of the octogonal and cubical linear vector space norms are discussed.
Authors:Mulayam Singh Gaur, Reeta Singh, Pramod Kumar Singh, Ajay Pal Indolia and Ranjit Singh
However, no detailed information are available in the literature on the effect of annealing on charge storage and transport in ethyl cellulose (EC). In view of the above, the effect of annealing time on TSDC spectra of negatively charged EC has been
Authors:Antonius J. Van Rooij and Laura M. Nijkamp
game-time restrictions (shutdown policy, South Korea), modification of game elements (fatigue systems, China), and time limits on Internet café access for young children (Thailand and South Korea). They acknowledge that western audiences would likely
aspect ( Allison, von Wahlde, Shockley, & Gabbard, 2006 ; Kim & Kim, 2010 ) and usually requires a substantial time commitment – e.g., the average massive multiplayer online role playing game (MMORPG) player spends 25–40 hr per week gaming ( Castronova
Brinkman, N. E., Haugland, R. A., Wymer, L. J., Byappanahalli, M., Whitman, R. L. and Vesper, S. J. (2003): Evaluation of a rapid, quantitative real-time PCR method for enumeration of pathogenic
cells in water. Appl. Environ. Microbiol.
Temperature is a dominant factor in rice development. Various thermal time methods are a possible way to model the development, and are able to predict phenological stages such as flowering. In our studies three different bilinear models were studied concerning the predicting of duration from emergence to flowering of rice based on phenological data collected from rice experiments carried out in the Irrigation Research Institute between 1991 and 1999 with the rice variety Ringola. The advance from linear model, which is preferred in agriculture involves an upper threshold temperature as a second parameter, and describes the development rate with a constant (Method 1) and two different steepness functions of linear decrease (Method 2 and 3) above this threshold. The duration of the phenological phase showed only slight variations (coefficient of variation, CV=6.43), thus the average number of days offered an acceptable prediction. The linear method did not show a significant improvement (CV=3.96) on the level P=5%. However the three tested bilinear methods resulted in significant development (CV=2.75; 2.71 and 2.73) if adequate parameters were applied. The distribution of variation coefficients according to different parameter combinations gave information on sensitivity of methods, while the adequate parameters of lower and upper thresholds provided some hints about climatic demands of rice.
temperature inside the device has stabilized. The time interval, after which the temperature stabilizes, is called the warm-up time. This paper aims to determine the warm-up time of the absolute tracker Leica AT 960-MR and the impact of the warm-up effect on