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Institution

Wichita State University

EducationWichita, Kansas, United States
About: Wichita State University is a education organization based out in Wichita, Kansas, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 4988 authors who have published 9563 publications receiving 253824 citations. The organization is also known as: WSU & Fairmount College.


Papers
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Journal ArticleDOI
TL;DR: This article presents a polynomial-time centralized approximation algorithm that provably delivers a solution whose benefit is at least 1/4 (1/2 for uniform-size data items) of the optimal benefit of the cache placement problem of minimizing total data access cost in ad hoc networks with multiple data items and nodes with limited memory capacity.
Abstract: Data caching can significantly improve the efficiency of information access in a wireless ad hoc network by reducing the access latency and bandwidth usage. However, designing efficient distributed caching algorithms is nontrivial when network nodes have limited memory. In this article, we consider the cache placement problem of minimizing total data access cost in ad hoc networks with multiple data items and nodes with limited memory capacity. The above optimization problem is known to be NP-hard. Defining benefit as the reduction in total access cost, we present a polynomial-time centralized approximation algorithm that provably delivers a solution whose benefit is at least 1/4 (1/2 for uniform-size data items) of the optimal benefit. The approximation algorithm is amenable to localized distributed implementation, which is shown via simulations to perform close to the approximation algorithm. Our distributed algorithm naturally extends to networks with mobile nodes. We simulate our distributed algorithm using a network simulator (ns2) and demonstrate that it significantly outperforms another existing caching technique (by Yin and Cao [33]) in all important performance metrics. The performance differential is particularly large in more challenging scenarios such as higher access frequency and smaller memory.

172 citations

Journal ArticleDOI
TL;DR: In this paper, an efficient finite element method for computing spectra of photonic and acoustic band gap materials is described, where only the scalar models are treated, and the full vector model will be considered in the next publication.

172 citations

Journal ArticleDOI
TL;DR: In this article, a new grid of stellar model calculations for stars on the Asymptotic giant branch between 1.0 and 6.0 M� was presented, which consists of 10 chemical mixtures with 5 metallicities between Z = 0.0005 and Z =0.04, and with both solarlike and α-element enhanced metal ratios for each metallicity.
Abstract: We present a new grid of stellar model calculations for stars on the Asymptotic Giant Branch between 1.0 and 6.0 M� . Our grid consists of 10 chemical mixtures with 5 metallicities between Z = 0.0005 and Z = 0.04, and with both solar-like and α-element enhanced metal ratios for each metallicity. We treat consistently the carbon-enhancement of the stellar envelopes by using opacity tables with varying C/O-ratio and by employing theoretical mass loss rates for carbon stars. The low temperature opacities have been calculated specifically for this project. For oxygen stars we use an empirical mass loss formalism. The third dredge-up is naturally obtained by including convective overshooting. Our models reach effective temperatures in agreement with earlier synthetic models, which included approximative carbon-enriched molecular opacities and show good agreement with empirically determined carbonstar lifetimes. A fraction of the models could be followed into the post-AGB phase, for which we provide models in a mass range supplementing previous post-AGB calculations. Our grid constitutes the most extensive set of AGB-models, calculated with the latest physical input data and treating carbon-enhancement due to the third dredge-up most consistently.

171 citations

Journal ArticleDOI
TL;DR: In this article, a review of carbon, aramide, and glass fiber composites is presented, highlighting the possible energy requirements, explaining the product outputs of recycling, and discussing the quality (fiber strength) of recyclates.
Abstract: Fiber-reinforced polymer composites are engineered materials commonly used for many structural applications because of the high strength-to-weight and stiffness-to-weight ratios. Although the service life of these materials in various applications is usually between 15 and 20 years, these often keep the physical properties beyond this time. Recycling composites using chemical, mechanical, and thermal processing is reviewed in this article. In this review of carbon, aramide, and glass fiber composites, we provide, as of 2011, a complete view of each composite recycling technology, highlight the possible energy requirements, explain the product outputs of recycling, and discuss the quality (fiber strength) of recyclates and how each recyclate fiber could be used in the market for sustainable composite manufacturing. This article also includes the new concept of ‘direct structural composite recycling’ and the use of these products in the same or different applications as low-cost composite materials after sm...

170 citations

Journal ArticleDOI
TL;DR: In this paper, the authors test a social interactional model of physical aggression and find that aggression has its roots in socialization settings that are characterized by high densities of aversive stimuli and that provide frequent reinforcement for escalation to high intensity aversive behavior during social conflict.
Abstract: The objective of this study was to test a social interactional model of physical aggression. Specifically, this model hypothesizes that the performance of physical aggression has its roots in socialization settings that are characterized by high densities of aversive stimuli and that provide frequent reinforcement for escalation to high intensity aversive behavior during social conflict. Social conflicts were observed during 10 hr of interaction of each of 20 mothers and their 5-year-old sons; half of the sons were selected based on evidence of frequent aggression in home and school settings. Simple descriptive and sequential analyses indicated that aggressive relative to nonaggressive dyad members were more likely to engage in conflict, engaged in longer conflicts, were more likely to escalate to higher levels of aversiveness, and were less likely to de-escalate the intensity of conflict. In aggressive and nonaggressive dyads, the cessation of conflict contingent on the escalation of one dyad member was reliably associated with an increased likelihood of escalation and with escalation to higher levels of aversiveness by that member in the subsequent conflict. However, escalation occurred more frequently and was more likely to result in cessation of conflicts in aggressive than nonaggressive dyads.

170 citations


Authors

Showing all 5021 results

NameH-indexPapersCitations
Herbert A. Simon157745194597
Rui Zhang1512625107917
Frederick Wolfe119417101272
Shunichi Fukuzumi111125652764
Robert Y. Moore9524535941
Maurizio Salaris7641720927
Annie K. Powell7348622020
Gunther Uhlmann7244419560
Danielle S. McNamara7053922142
Jonathan P. Hill6736719271
Francis D'Souza6647716662
Osamu Ito6554917035
Louis J. Guillette6433820263
Karl A. Gschneidner6467522712
Robert Reid5921512097
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202314
202259
2021331
2020351
2019325
2018327