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Search Results: 1 - 10 of 3025 matches for " Julie Hickman "
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On Merging Cover Inequalities for Multiple Knapsack Problems  [PDF]
Randal Hickman, Todd Easton
Open Journal of Optimization (OJOp) , 2015, DOI: 10.4236/ojop.2015.44014
Abstract:

This paper describes methods to merge two cover inequalities and also simultaneously merge multiple cover inequalities in a multiple knapsack instance. Theoretical results provide conditions under which merged cover inequalities are valid. Polynomial time algorithms are created to find merged cover inequalities. A computational study demonstrates that merged inequalities improve the solution times for benchmark multiple knapsack instances by about 9% on average over CPLEX with default settings.

What is a prisoner of war for?
J Hickman
Scientia Militaria: South African Journal of Military Studies , 2008,
Abstract: This article presents a conceptual map of the purposes served by continuing custody of prisoners of war and captured non-combatants. Morally legitimate and non-controversial purposes include preventing prisoners of war from rejoining their comrades-in-arms, preventing both prisoners of war and captured non-combatants from giving material support to combatants still in the field, facilitating orderly release and repatriation at the end of hostilities, and the prosecution for war crimes. Morally illegitimate purposes include punishment, exploitation as conscript labour, recruitment or conscription as combatants, exploitation for intelligence, display as proof of victory, and ideological indoctrination. Analysis of historical cases illustrating each purpose reveal that continuing custody is often motivated by multiple purposes, both legitimate and illegitimate. What explains adoption of multiple and illegitimate purposes for continuing custody? Prisoners are available for legitimate and illegitimate purposes because neither elites nor masses within the captor state typically view prisoners as members of the moral community.1 Continuing custody does not alter the perceived status of the captured as aliens who cannot be intuitively invested with expectations of reciprocity. This suggests both ending custody as soon as legitimate purposes are served and bringing the captured within the moral community while in continuing captivity. Scientia Militaria: South African Journal of Military Studies Vol. 36 (2) 2008: pp. 19-35
WHAT IS A PRISONER OF WAR FOR?
John Hickman
Scientia Militaria : South African Journal of Military Studies , 2011, DOI: 10.5787/36-2-50
Abstract: This article presents a conceptual map of the purposes served by continuing custody of prisoners of war and captured non-combatants. Morally legitimate and non-controversial purposes include preventing prisoners of war from rejoining their comrades-in-arms, preventing both prisoners of war and captured non-combatants from giving material support to combatants still in the field, facilitating orderly release and repatriation at the end of hostilities, and the prosecution for war crimes. Morally illegitimate purposes include punishment, exploitation as conscript labour, recruitment or conscription as combatants, exploitation for intelligence, display as proof of victory, and ideological indoctrination. Analysis of historical cases illustrating each purpose reveal that continuing custody is often motivated by multiple purposes, both legitimate and illegitimate. What explains adoption of multiple and illegitimate purposes for continuing custody? Prisoners are available for legitimate and illegitimate purposes because neither elites nor masses within the captor state typically view prisoners as members of the moral community.1 Continuing custody does not alter the perceived status of the captured as aliens who cannot be intuitively invested with expectations of reciprocity. This suggests both ending custody as soon as legitimate purposes are served and bringing the captured within the moral community while in continuing captivity.
A Longshot Technique for Resurrecting the Dead by Reversing the Flow of Time
H. Hickman
Physics , 2001,
Abstract: Reversing the flow of time between Casimir plates raises the question of whether or not a recently deceased, intact organism could be brought back to life. The odds are not good.
An affine Fourier restriction theorem for conical surfaces
Jonathan Hickman
Mathematics , 2013, DOI: 10.1112/S002557931300020X
Abstract: A Fourier restriction estimate is obtained for a broad class of conic surfaces by adding a weight to the usual underlying measure. The new restriction estimate exhibits a certain affine-invariance and implies the sharp $L^p-L^q$ restriction theorem for compact subsets of a type $k$ conical surface, up to an endpoint. Furthermore, the chosen weight is shown to be, in some quantitative sense, optimal. Appended is a discussion of type k conical restriction theorems which addresses some anomalies present in the existing literature.
Uniform $L_x^p - L^q_{x,r}$ Improving for Dilated Averages over Polynomial Curves
Jonathan Hickman
Mathematics , 2015,
Abstract: Numerous authors have considered the problem of determining the Lebesgue space mapping properties of the operator $\mathcal{A}$ given by convolution with affine arc-length measure on some polynomial curve in Euclidean space. Essentially, $\mathcal{A}$ takes weighted averages over translates of the curve. In this paper a variant of this problem is discussed where averages over both translates and dilates of a fixed curve are considered. The sharp range of estimates for the resulting operator is obtained in all dimensions, except for an endpoint. The techniques used are redolent of those previously applied in the study of $\mathcal{A}$. In particular, the arguments are based upon the refinement method of Christ, although a significant adaptation of this method is required to fully understand the additional smoothing afforded by averaging over dilates.
Enhanced Delivery and Potency of Self-Amplifying mRNA Vaccines by Electroporation in Situ
Yen Cu,Kate E. Broderick,Kaustuv Banerjee,Julie Hickman,Gillis Otten,Susan Barnett,Gleb Kichaev,Niranjan Y. Sardesai,Jeffrey B. Ulmer,Andrew Geall
Vaccines , 2013, DOI: 10.3390/vaccines1030367
Abstract: Nucleic acid-based vaccines such as viral vectors, plasmid DNA (pDNA), and mRNA are being developed as a means to address limitations of both live-attenuated and subunit vaccines. DNA vaccines have been shown to be potent in a wide variety of animal species and several products are now licensed for commercial veterinary but not human use. Electroporation delivery technologies have been shown to improve the generation of T and B cell responses from synthetic DNA vaccines in many animal species and now in humans. However, parallel RNA approaches have lagged due to potential issues of potency and production. Many of the obstacles to mRNA vaccine development have recently been addressed, resulting in a revival in the use of non-amplifying and self-amplifying mRNA for vaccine and gene therapy applications. In this paper, we explore the utility of EP for the in vivo delivery of large, self-amplifying mRNA, as measured by reporter gene expression and immunogenicity of genes encoding HIV envelope protein. These studies demonstrated that EP delivery of self-amplifying mRNA elicited strong and broad immune responses in mice, which were comparable to those induced by EP delivery of pDNA.
Analysis of the factors affecting the severity of two-vehicle crashes
Angel,Alejandro; Hickman,Mark;
Ingeniería y Desarrollo , 2008,
Abstract: this study performs a comprehensive analysis of the effect of different environmental, demographic and vehicle variables on the severity of two-vehicle crashes. the limitations associated with previous studies have been addressed by using a large crash database, properly defining the independent variables, using an appropriate statistical model, and by considering the effect of factors normally unaccounted for such as crash type, dui involvement, impact speed and height incompatibilities between the two vehicles. the use of a multinomial logit model provides the flexibility to evaluate variables that have opposing effects at different injury levels (such as airbag availability). an innovative linear crash cost model is also used to estimate the effect of the independent variables in terms of dollars. this simplification is particularly useful when discussing potential policy treatments for improving road safety with transportation officials, politicians and other decision makers. the findings from the two models are consistent and suggest that the type of crash has a great impact on severity. age is the most significant demographic variable, with children being least likely to be injured, and older occupants being most likely to be injured. occupant behavior also seems to be critical, as the use of seatbelts, and alcohol involvement, greatly decrease or increase, respectively, the severity of the crash. heavier vehicles increase the safety of its occupants but decrease the safety of occupants of the other vehicle. vehicle types are not found to be as significant as weight, with the notable exception of pickups, which are at the same time more crashworthy and more aggressive than passenger cars.
Analysis of the factors affecting the severity of two-vehicle crashes
Alejandro Angel,Mark Hickman
Ingeniería y Desarrollo , 2008,
Abstract: This study performs a comprehensive analysis of the effect of different environmental, demographic and vehicle variables on the severity of two-vehicle crashes. The limitations associated with previous studies have been addressed by using a large crash database, properly defining the independent variables, using an appropriate statistical model, and by considering the effect of factors normally unaccounted for such as crash type, DUI involvement, impact speed and height incompatibilities between the two vehicles. The use of a multinomial logit model provides the flexibility to evaluate variables that have opposing effects at different injury levels (such as airbag availability). An innovative linear crash cost model is also used to estimate the effect of the independent variables in terms of dollars. This simplification is particularly useful when discussing potential policy treatments for improving road safety with transportation officials, politicians and other decision makers. The findings from the two models are consistent and suggest that the type of crash has a great impact on severity. Age is the most significant demographic variable, with children being least likely to be injured, and older occupants being most likely to be injured. Occupant behavior also seems to be critical, as the use of seatbelts, and alcohol involvement, greatly decrease or increase, respectively, the severity of the crash. Heavier vehicles increase the safety of its occupants but decrease the safety of occupants of the other vehicle. Vehicle types are not found to be as significant as weight, with the notable exception of pickups, which are at the same time more crashworthy and more aggressive than passenger cars.
Why strict drug laws work (and why they do not)
Timothy A. Hickman
Amsterdam Law Forum , 2010,
Abstract: Academic and scientific arguments in favour of the de-regulation of illicit drugs are usually made on the basis of the greater harm done by the laws than by the drugs themselves. This article argues that such claims miss a key point. They forget that drug policy is made for people from wealthy countries who do not and are not likely to take drugs. As such, arguments based on failed treatment programmes or on large-scale, organised drug crime often fall on the deaf ears of those who believe that strict drug laws help to keep them, and especially their children, off drugs. Advocates of drug de-regulation must take the interests and beliefs of this voting majority seriously if they wish to persuade politicians to ease their ‘war on drugs’.
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