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Pollution of the Natural Environment in Intensive Cultures Under Greenhouses
Tomasz Kleiber
Archives of Environmental Protection , 2012, DOI: 10.2478/v10265-012-0017-5
Abstract: The last two decades have brought a significant modernization in methods of cultivation in greenhouses. Soilless cultures, isolated from soils, have become a common practice, similarly as fertigation (fertilization + irrigation) installations, although most of them are applied in the open system (with no recirculation), where excess nutrient solution is removed straight to soil. This situation was the reason why it was decided to conduct studies, extended over a period of many years, on the estimation of environmental pollution caused by discharged drainage waters containing mineral fertilizers in economically important cultures in Poland (anthurium, tomato, cucumber). On the basis of the chemical composition of drainage waters and amounts of nutrient solution spillway from culture beds data were estimated concerning pollution of the soil medium by the nutrient solution. The level of pollution was dependent on nutrient requirements of crops and the length of the vegetation period. The highest environmental pollution is caused by intensive tomato growing (in kg·month·ha-1): N-NO3 (up to 245), K (up to 402), Ca (up to 145) and S-SO4 (up to 102). A lesser threat is posed by metal microelements: Fe (up to 2.69), Mn (up to 0.19), Zn (up to 0.52) and Cu (up to 0.09). Lower contamination of the natural environment is generated in cultures with lower nutrient requirements (anthurium) and in the case of culture on organic substrates. With an increase in ecological awareness of producers recirculation systems should be implemented in the production practice, in which drainage waters do not migrate directly to soil, but are repeatedly used to feed crops.
Retour sur les noms propres standard modifiés
Georges Kleiber
Linguística : Revista de Estudos Linguísticos da Universidade do Porto , 2006,
Abstract: In this article, we intend to return to the polemic and controversial treatment of the modifi ed proper nouns. In the fi rst part of this article, we expose the main points of the corrected version of the analysis of proper nouns presented in Kleiber (1995, 1996), as well as the two main objections made to this analysis by Noailly (2000). In the second and third parts of the present work we examine profoundly each of these objections with a double purpose. First, we aim at proving that they can neither be correctly applied to our proposition nor may be considered a serious obstacle to it. Secondly, we present a general, but precise and unambiguous, overview of the opposition between bare proper nouns, also known as standard proper nouns or non modifi able proper nouns, and modifi ed proper nouns. This overview enables us to reach a theoretical stabi lity and serenity essential to the progression of our knowledge about proper nouns.
La quantification universelle en trio: tous les, chaque et tout
Georges Kleiber
Studii de Lingvistica , 2011,
Abstract: This article revisits the well-known question of the quantification made by chaque, tout and tous les, that express totality or universal quantification, by focusing on a preliminary question: should we group the three quantifiers or not? Most frequently this is not the case: either chaque and tout are tackled together or chaque and tous les. It is advisable to group them first and to make a progressive internal differentiation from their common platform. The first part of the paper deals with the various aspects of the notion of totality associated with the three quantifiers. Then the question raised by the definite plural article les is examined. Finally arguments are given in favour of the separation of tous les from chaque and tout.
Traffic Constraints (Pedestrian Areas, Parking Limits, etc.) and Real Estate Market
W. Kleiber
Aestimum , 1992,
Abstract:
The generalized lognormal distribution and the Stieltjes moment problem
Christian Kleiber
Statistics , 2013,
Abstract: This paper studies a Stieltjes-type moment problem defined by the generalized lognormal distribution, a heavy-tailed distribution with applications in economics, finance and related fields. It arises as the distribution of the exponential of a random variable following a generalized error distribution, and hence figures prominently in the EGARCH model of asset price volatility. Compared to the classical lognormal distribution it has an additional shape parameter. It emerges that moment (in)determinacy depends on the value of this parameter: for some values, the distribution does not have finite moments of all orders, hence the moment problem is not of interest in these cases. For other values, the distribution has moments of all orders, yet it is moment-indeterminate. Finally, a limiting case is supported on a bounded interval, and hence determined by its moments. For those generalized lognormal distributions that are moment-indeterminate Stieltjes classes of moment-equivalent distributions are presented.
Coherence for Random Fields
William Kleiber
Statistics , 2015,
Abstract: Multivariate spatial field data are increasingly common and whose modeling typically relies on building cross-covariance functions to describe cross-process relationships. An alternative viewpoint is to model the matrix of spectral measures. We develop the notions of coherence, phase and gain for multidimensional stationary processes. Coherence, as a function of frequency, can be seen to be a measure of linear relationship between two spatial processes at that frequency band. We use the coherence function to illustrate fundamental limitations on a number of previously proposed constructions for multivariate processes, suggesting these options are not viable for real data. We also give natural interpretations to cross-covariance parameters of the Matern class, where the smoothness indexes dependence at low frequencies while the range parameter can imply dependence at low or high frequencies. Estimation follows from smoothed multivariate periodogram matrices. We illustrate the estimation and interpretation of these functions on two datasets, forecast and reanalysis sea level pressure and geopotential heights over the equatorial region. Examining these functions lends insight that would otherwise be difficult to detect and model using standard cross-covariance formulations.
On moment indeterminacy of the Benini income distribution
Christian Kleiber
Statistics , 2013,
Abstract: The Benini distribution is a lognormal-like distribution generalizing the Pareto distribution. Like the Pareto and the lognormal distributions it was originally proposed for modeling economic size distributions, notably the size distribution of personal income. This paper explores a probabilistic property of the Benini distribution, showing that it is not determined by the sequence of its moments although all the moments are finite. It also provides explicit examples of distributions possessing the same set of moments. Related distributions are briefly explored.
Neurodevelopmental Timing of Ethanol Exposure May Contribute to Observed Heterogeneity of Behavioral Deficits in a Mouse Model of Fetal Alcohol Spectrum Disorder (FASD)  [PDF]
Katarzyna Mantha, Morgan Kleiber, Shiva Singh
Journal of Behavioral and Brain Science (JBBS) , 2013, DOI: 10.4236/jbbs.2013.31009
Abstract:
Maternal drinking during pregnancy can result in a wide spectrum of cognitive and behavioral abnormalities termed fetal alcohol spectrum disorders (FASD). The heterogeneity observed in FASD-related phenotypes can be attributed to a number of environmental and genetic factors; however, ethanol dose and timing of exposure may have significant influences. Here, we report the behavioral effects of acute, binge-like ethanol exposure at three neurodevelopmental times corresponding to the first, second, and third trimester of human development in C57BL/6J mice. Results show that developmental ethanol exposure consistently delays the development of basic motor skill reflexes and coordination as well as impairs spatial learning and memory. Observed changes in activity and anxiety-related behaviors, however, appear to be dependent on timing of alcohol exposure. The variability in behaviors between different treatment models suggests that these may be useful in evaluating the mechanisms disrupted by ethanol at specific neurodevelopmental times. The results provide further evidence that, regardless of developmental stage, the developing brain is acutely sensitive to alcohol exposure.
Optimizing Leisure Experience After 40
Kleiber, Douglas A.
Arbor : Ciencia, Pensamiento y Cultura , 2012, DOI: 10.3989/arbor.2012.754n2007
Abstract: Aging is a natural process that occurs across the lifespan, but to suggest that some people age more successfully than others is to invoke some criteria of living well in later life and then to consider the factors that may contribute. This article puts leisure front and center in the aging process, especially after midlife, and identifies experiential aspects of leisure that may be most influential. But it departs from some of the standard models of successful aging in recognizing opportunities and possibilities even for those with disabling conditions, in reaching back earlier in adulthood for critical incidents that may prove influential, and in considering disengagement as well as engagement as processes and experiences for optimizing leisure and thus aging. Relying more on models of adaptation and selectivity from developmental psychologists Paul and Margaret Baltes and Leah Carstenson, social and civic engagement are considered as well. Envejecer es un proceso natural que ocurre a lo largo de toda la vida; no obstante, sugerir que algunas personas envejecen más exitosamente que otras es advertir ciertos criterios para vivir bien al final de la vida y, acto seguido, considerar los factores que contribuyen a ello. En este artículo se sitúa al ocio como frente y eje central del proceso de envejecimiento –especialmente tras la mediana edad–, identificándose aquellos aspectos de la experiencia del ocio que pueden ser más influyentes. En este sentido, se parte de los estándares provistos por modelos de envejecimiento exitoso, reconociéndose sus oportunidades y posibilidades (incluso para quienes parten con desventaja en este proceso), indagando en las experiencias críticas que han podido ser más influyentes durante el período adulto inmediatamente anterior, y considerando el implicarse –o no– como procesos y experiencias que optimizan el ocio y, por extensión, el envejecimiento. Asimismo, se atiende a la participación cívica y social con base en los modelos de adaptación y selección de los psicólogos evolutivos Paul y Margaret Baltes y Leah Carstenson.
COMPOSTING AQUATIC MACROPHYTES: SALVINIA AURICULATA AND EICHHORNIA
Ana Kleiber Pessoa Borges
Engenharia Ambiental : Pesquisa e Tecnologia , 2011,
Abstract: High population growth and densities in urban areas and the consumerism present in modern societies have pronounced effect on the generation of organic waste, which may become an environmental problem. Aerobic composting is one of the best known alternatives to treating these wastes. This study aimed to evaluate the applicability of composting as an alternative to the disposal of organic wastes from aquatic macrophytes Eichhornia crassipes and Salvinia auriculata collected in the reservoir UHE Luis Eduardo Magalh es, Tocantins, Brazil and also produce an organic compound from different combinations of macrophytes, prunning residues and organic waste generated by the Campus of Palmas of UFT, TO. The study was conducted in an area of 80m2 in unprotected environment at the experimental station of the Campus of Palmas. The experiments were done as three replications in the dry season (from 18.09.2008 to 11.21.2008) and rainy season (from 03.09.2009 to 05.04.2009) and the parameters temperature, pH, total nitrogen and carbon, and organic matter were monitored along with counts of microorganisms. It was possible to produce compost from the combinations of organic wastes within 65 days of composting during the dry season and 55 days in the rainy season. The aquatic macrophytes resulted in a good raw material for composting, since there is not a destination for the excess plant materials removed by the cleaning process of the reservoir.
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