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The professional literature on land-locked states has increased substantially in the past two decades. There is now a considerable body of writings by people in many countries around the world reporting on, inquiring into or carefully analysing most aspects of land-lockedness from various disciplinai and national viewpoints. In addition, there is a roughly equally large body of material related to land-lockedness produced by the United Nations and its organs and affiliates; by other intergovernmental organisations, including many regional and subregional groups; and by private consultants and consulting firms, chiefly in the fields of economics and engineering. © 1998 Frank Cass.
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This paper examines the effect of ritual in different elementary subjects. Lessons in math, language arts, and social studies were observed in public, private, and home school first and fifth grades. In observing these classes, this researcher noted that in all contexts, math lessons were taught very differently from social studies and language arts, confirming earlier work by Stodalsky. The rituals in how concepts were taught, and in how students and teachers related to each other, were very different in math lessons from in the other two subjects. In language arts and social studies lessons, students and teachers routinely shared personal out-of-school experiences, whereas they rarely did so in math lessons. Drawing on Bernstein's description of the sacredness of subjects and linking it to theories in economic anthropology, the author attempts to explain the isolation of school math and to question the level of intimacy and community in current math classes. © 1997 Human Sciences Press, Inc.
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This paper examines whether a more restrictive zoning ordinance actually reduces construction of new housing. This may seem at first to be a trivial issue, since why else would a zoning board make the ordinance more restrictive. However, it is possible for landowners to circumvent the zoning law. For example, they can subdivide their land before the zoning change occurs. In addition, they can bargain with the local zoning officials and offer side payments, also known as exactions, for the right to develop their land. This paper examines a famous case of agricultural downzoning in McHenry County, Illinois. It finds that although the number of building permits issued did not fall immediately, in the long run the number of permits issued by the county was significantly reduced. This suggests that developers were able to anticipate the zoning change and subdivide their land before it occurred. (C) 1997 Academic Press.
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The objective of this research is to automate the classification of clouds from satellite images providing a method for studying their properties over time. Analysis was applied to the International Satellite Cloud Climatology Project (ISCCP) low resolution (2.5 degrees per pixel) database for January 1987. Our approach differs from earlier studies by taking advantage of cloud top pressure and optical thickness from the ISCCP database, providing more accurate measures of cloud height with less dependency on the sun's angle of illumination. A total of 365 regions of interest (ROI), each classified Storm or Non Storm were used in the analysis. The algorithms used were Backpropagation Artificial Neural Network and Nearest Neighbor Pattern Classification. Each ROI was assigned on identification number between 1 and 365. One third of the ROIs were randomly selected for testing using a random number generator and the remaining ROIs were assigned to be training set. This process was repeated 29 times resulting in a mean classification error of 5.76% for the nearest neighbor algorithm and 3.97% for the backpropagation neural network.
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Cloud analyses provide information which is vital to the detection, understanding and prediction of meteorological trends and environmental changes. This paper compares statistical, neural network and genetic algorithm methods for recognition and tracking of midlatitude storm clouds in sequences of low-resolution cloud-top pressure data sets. Regions of interest are identified and tracked from one image frame to the next consecutive frame in an eight-frame sequence. Classification techniques are used to determine the relationships between regions of interest in consecutive time frames. A genetic algorithm procedure is then used to revise classifier outputs to ensure that consistency constraints are not violated. © 1997 Elsevier Science B.V.
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This study examines the temperamental characteristics of children who were identified at age two as being slow in expressive language development, and those of peers with normal language history. When the children were in first grade (approximately age six), parents and clinicians rated subjects' temperamental characteristics, using a standardized temperament assessment instrument. Subjects with a history of slow expressive language development were rated significantly lower on Approach/Withdrawal-indicating shyness, aloofness, or reduced outgoingness-than peers with normal language history. Approach/Withdrawal scores were significantly correlated with average sentence length in spontaneous speech, and this measure also predicted Approach/Withdrawal scores in regression analyses. The clinical and theoretical implications of these findings for early language delay are discussed.
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