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The Tail Assignment Problem
, 2005
"... The Aircraft Assignment problem is the problem of assigning flights to aircraft in such a way that some operational constraints are satisfied, and possibly that some objective function is optimized. We propose an approach to aircraft assignment which captures all operational constraints, including m ..."
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Cited by 4 (1 self)
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The Aircraft Assignment problem is the problem of assigning flights to aircraft in such a way that some operational constraints are satisfied, and possibly that some objective function is optimized. We propose an approach to aircraft assignment which captures all operational constraints, including
Executive Summary Statement of the Problem
"... Violent campus crime, in particular rape and aggravated assault, has become more pronounced in the last several decades. The judicial and legislative branches have responded through court decisions and legal enactments that require most universities to collect and report campus crime data. Many conc ..."
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Violent campus crime, in particular rape and aggravated assault, has become more pronounced in the last several decades. The judicial and legislative branches have responded through court decisions and legal enactments that require most universities to collect and report campus crime data. Many concerns have arisen as to the effectiveness and implications associated with such mandates. Some believe current laws do little to improve campus safety. Some suggested solutions to address campus crime have involved safety initiatives/programs and potential staffing increases to their campus police force. Research Questions • Are universities a reflection of surrounding community levels on violent crime and police staffing? • Are violent on campus crimes and police staffing impacted by university location and enrollment? • Does a relationship exist between police staffing and violent levels of personal crime? Methodology This study used a population of all Kentucky statesponsored universities and their surrounding communities. Study measures involved demographic characteristics, police presence and violent personal crime. The data were analyzed using SPSS descriptively, in terms of frequency and measures of central tendency, and inferentially to test hypotheses. Independent ttests were used to test differences in
Some Unsolved Problems in Graph Theory and Combinatorial Analysis
, 1971
"... In the present note I discuss some unsolved problems in graph theory and combinatorial analysis which I have thought about in the recent past. I hope that at least a good proportion of them are new. First I introduce some notation. G(n; k) wil1 denote a graph of n vertices and k edges. C, denotes a ..."
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Cited by 12 (0 self)
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In the present note I discuss some unsolved problems in graph theory and combinatorial analysis which I have thought about in the recent past. I hope that at least a good proportion of them are new. First I introduce some notation. G(n; k) wil1 denote a graph of n vertices and k edges. C, denotes a
The Importance of Women's Status for Child Nutrition in Developing Countries
 International Food Policy Research Institute
, 2003
"... This report uses data from 36 countries in three developing regions to establish empirically that women's status, defined as women's power relative to men's, is an important determinant of children's nutritional status. It finds that the pathways through which status influences c ..."
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Cited by 62 (3 self)
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This report uses data from 36 countries in three developing regions to establish empirically that women's status, defined as women's power relative to men's, is an important determinant of children's nutritional status. It finds that the pathways through which status influences child nutrition and the strength of that influence differ considerably from one region to another. Where women's status is low, this research proves unequivocally that policies to eradicate gender discrimination not only benefit women but also their children
Urban Development and the Politics of a Creative Class: Evidence from the Study of Artists. Forthcoming in Environment and Planning A
, 2006
"... anonymous reviewers for critical feedback on an earlier draft. Comments welcome. In this paper, I critique the notion of “the creative class ” and the fuzzy causal logic about its relationship to urban growth. I argue that the creative class bunches together, purely on the basis of educational attai ..."
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Cited by 58 (4 self)
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anonymous reviewers for critical feedback on an earlier draft. Comments welcome. In this paper, I critique the notion of “the creative class ” and the fuzzy causal logic about its relationship to urban growth. I argue that the creative class bunches together, purely on the basis of educational attainment, occupations that exhibit distinctive spatial and political proclivities and with little demonstrable relationship to creativity. I use a case study of artists, one element of the purported creative class, to probe this phenomenon, demonstrating that the formation, location, urban impact and politics of this occupation are much more complex and distinctive than suggested in Richard Florida’s Rise of the Creative Class (2002). Artists’ spatial distribution is a function of semiautonomous personal migration decisions, local nurturing of artists in dedicated spaces and organizations, and the locus of artistemploying firms. Artists, an occupation with very high rates of selfemployment, boost regional growth by providing importsubstituting consumption activities for residents and through direct export of their work. Their contribution to attracting high tech activity is ambiguous – causality may work in the opposite direction. Artists play multiple roles in an urban
A polyhedral approach to sequence alignment problems
, 1999
"... We study two problems in sequence alignment both from a theoretical and a practical point of view. For the first time in sequence alignment, we use tools from combinatorial optimization to develop branchandcut algorithms that solve these problems efficiently. The Generalized Maximum Trace formulat ..."
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Cited by 6 (5 self)
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We study two problems in sequence alignment both from a theoretical and a practical point of view. For the first time in sequence alignment, we use tools from combinatorial optimization to develop branchandcut algorithms that solve these problems efficiently. The Generalized Maximum Trace
POPMUSIC FOR THE POINT FEATURE LABEL PLACEMENT PROBLEM
"... Abstract. Pointfeature label placement is the problem of placing text labels adjacent to point features on a map so as to maximize legibility. The goal is to choose positions for the labels that do not give rise to label overlaps and that minimize obscuration of features. A practical goal is to min ..."
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Cited by 4 (0 self)
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Abstract. Pointfeature label placement is the problem of placing text labels adjacent to point features on a map so as to maximize legibility. The goal is to choose positions for the labels that do not give rise to label overlaps and that minimize obscuration of features. A practical goal
A 2Approximation for the Minimum Duplication Speciation Problem
 in "Journal of Computational Biology
"... We consider the following problem: given a set of gene family trees, spanning a given set of species, find a first speciation which splits these species into two subsets and minimizes the number of gene duplications that happened before this speciation. We call this problem the Minimum Duplication B ..."
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We consider the following problem: given a set of gene family trees, spanning a given set of species, find a first speciation which splits these species into two subsets and minimizes the number of gene duplications that happened before this speciation. We call this problem the Minimum Duplication
Introspective Sorting and Selection Algorithms
 Software Practice and Experience
, 1997
"... Quicksort is the preferred inplace sorting algorithm in many contexts, since its average computing time on uniformly distributed inputs is \Theta(N log N) and it is in fact faster than most other sorting algorithms on most inputs. Its drawback is that its worstcase time bound is \Theta(N ). Previo ..."
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Cited by 51 (1 self)
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Quicksort is the preferred inplace sorting algorithm in many contexts, since its average computing time on uniformly distributed inputs is \Theta(N log N) and it is in fact faster than most other sorting algorithms on most inputs. Its drawback is that its worstcase time bound is \Theta(N ). Previous attempts to protect against the worst case by improving the way quicksort chooses pivot elements for partitioning have increased the average computing time too muchone might as well use heapsort, which has a \Theta(N log N) worstcase time bound but is on the average 2 to 5 times slower than quicksort. A similar dilemma exists with selection algorithms (for finding the ith largest element) based on partitioning. This paper describes a simple solution to this dilemma: limit the depth of partitioning, and for subproblems that exceed the limit switch to another algorithm with a better worstcase bound. Using heapsort as the "stopper" yields a sorting algorithm that is just as fast as quicksort in the average case but also has an \Theta(N log N) worst case time bound. For selection, a hybrid of Hoare's find algorithm, which is linear on average but quadratic in the worst case, and the BlumFloydPrattRivestTarjan algorithm is as fast as Hoare's algorithm in practice, yet has a linear worstcase time bound. Also discussed are issues of implementing the new algorithms as generic algorithms and accurately measuring their performance in the framework of the C++ Standard Template Library.
An Alternate Approach to the Oblique Derivative Problem in Potential Theory
, 2004
"... This thesis has evolved with the advice, feedback and help of many people. In particular I would like to express my gratitude to Prof. Dr. W. Freeden for giving me the opportunity to work on this subject and supporting me with advice and suggestions throughout my time. Furthermore I would like to t ..."
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Cited by 2 (1 self)
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on inverse problems. This lecture constitutes the basis of my treatment of severely illposed problems and gave rise to intense and fertile discussions on this topic. As I am not an expert in stochastics I gratefully acknowledge the patience of Dr. J.P. Stockis who helped me whenever I had a problem
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