2,090 research outputs found
Lotka' s Law, Co-authorship and Interdisciplinary Publishing
No full textThe robustness or breakdown of Lotka's law about the frequency distribution of scientific productivity depends on scientific cooperation, counting methods, interdisciplinary publishing and selection methods for sample collections. We have chosen to analyse the relationship using Mandelbrot's equivalent distribution model because this model is sensitive and uses the original data (scores). Five sets of authors and publications, the two sets used by Lotka, a set from High Energy Physics, a set from Microbiology and a set based on applicants to a research programme promoting young researchers have been used. It is shown that even for a sample of authors in High-Energy Physics with extremely strong co-authorship, Mandelbrot's distribution law is robust when complete-normalized (fractional) counting is used whereas complete counting results in a breakdown. In the field of Microbiology with much weaker cooperation, both counting methods result in a breakdown of Mandelbrot's law. Today a field like Microbiology with the corresponding set of journals, probably has a large content of interdisciplinary publishing and therefore no more fulfills the precondition of Lotka's law, that the total production of the authors (sources) is considered. For a set of applicants for the Emmy Noether Programme of the German Research Foundation. Mandelbrot's law breaks down despite the fact that all publications co-authored by the applicants are taken into account. In agreement with Bayes' theorem of conditional probabilities these results lead to the conjecture that any selection process of authors and/or publications causes a breakdown of Mandelbrot's law and, as a consequence Lotka's law
RESULTS OF THE NORTH DAKOTA LAND VALUATION MODEL FOR THE 2004 AGRICULTURAL REAL ESTATE ASSESSMENT
No full textThis report summarizes the 2004 results of the North Dakota Land Valuation Model. This model is used annually to estimate average land values by county, based on the value of production from cropland and non-cropland. The county land values developed from this procedure form the basis for the 2004 valuation of agricultural land for real estate tax assessment. The average all land value from this analysis is multiplied by the total acres of agricultural land on the county abstract to determine each county's total agricultural land value for taxation purposes. The State Board of Equalization compares this value with the total value assessed to agricultural property in each county. Each county is required by state statute to assess a total value of agricultural property within 5 percent of this value. The average value per acre of all agricultural land in North Dakota decreased by 0.66 percent based on the value of production analysis. Cropland value declined by 0.32 percent and non-cropland value dropped by 2.58 percent. The formula capitalization rate was below the minimum set by the State Legislature; therefore, the minimum rate of 9.5 percent was used. Changes in market value are included for comparison. Market value data is from the annual County Rents and Values survey conducted by North Dakota Agricultural Statistics Service.Land valuation, real estate assessment, agricultural land, Land Economics/Use,
Ceremony
No full textFormal Ceremony for the President of Augustana Lutheran Church including Rev. Dr. Malvin H. Lundeen, Rev. Dr. D. Verner Swanson, Rev. Dr. Oscar A. Benson, Rev. Dr. P.O. Bersell, Rev. Dr. William Larsen, and unidentified other
Scientific Output and Impact: Relative Positions of China, Europe, India, Japan and the USA
No full textPublication outputs and world shares of scientific publication are presented for 1981-2004 for China, Europe, India, Japan and the USA. Our results are compared with those available in the literature. The current situation whereby the main producers of scientific output statistics use different counting methods – thus, producing major differences in scientific output values – is unsatisfactory. The share in the total number of publications has been stagnating or gradually decreasing in recent years for Europe, the USA, India and Japan although there is no absolute decline in publication activities. The most dramatic trend has been the fast growth in China. The USA is still maintaining a lead in publication impact. The impact from EU, Japan, China and India increases but is still far behind that of USA
Risk-based capital requirements and loan growth
No full textBank capital ; Bank loans ; Risk ; Bank holding companies
Synthesis of 5-substituted pyrrolo[1,2-b]pyridazines with antioxidant properties
No full textSynthesis of 5-substituted pyrrolo[1,2-b]pyridazines with antioxidant properties. Ostby OB, Gundersen LL, Rise F, Antonsen O, Fosnes K, Larsen V, Bast A, Custers I, Haenen GR. Department of Chemistry, University of Oslo, P.O. Box 1033, Blindern, N-0315 Oslo, Norway. 5-Substituted pyrrolo[1,2-b]pyridazines have been prepared by cyclisation of pyridazine with diphenylcyclopropenone followed by further functionalisations in the pyrrolo[1,2-b]pyridazine 5-position. Several compound exhibit profound inhibition of lipid peroxidation in vitro. Lipid peroxidation of boiled rat liver microsomes was induced by ascorbic acid/FeSO4 and the peroxidation was determined by measuring the thiobarbituric acid reactive materia
Domain adaptation for target classification using micro-Doppler spectra in radar networks
No full textIn this paper, the classification of human activity from micro-Doppler spectrograms measured by a radar network is considered. To cope with differences between the training and test datasets due to changes in the set of participants, signal-to-noise ratio and polarimetry, domain adaptation is proposed. To realize this, linear mapping between the two domains is assumed and estimated by one of two methods, expectation-maximization or empirical estimates of statistical moments. The performance of the methods is evaluated on experimental data measured by a multi-static radar network. The proposed methods increase the classification accuracy by 5–15 percentiles on the recorded dataset.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Microwave Sensing, Signals & System
Comment on "Nash and Stackelberg solutions in a differential game model of capitalism"
No full textGame Theory;Capitalism
An adaptive track predictor for ships
No full textElectrical Engineering, Mathematics and Computer Scienc
The Second International Symposium on Tilapia in Aquaculture
No full textProceedings of the symposium held in 1987 in Bangkok, Thailand, by tilapia scientists to discuss strategies for future research and development in the tilapia industry worldwide. Contains 82 full papers, 17 poster abstracts and author and species indexes. The full papers were presented under 7 sessions: culture systems, management and production; pathology; genetics and reproduction; nutrition, physiology; biology and ecology; and economics and socioeconomics.Tilapia culture, Conferences
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