2,491 research outputs found
Green Base Station Placement for Microwave Backhaul Links
Wireless mobile backhaul networks have been proposed as a substitute in cases
in which wired alternatives are not available due to economical or geographical
reasons. In this work, we study the location problem of base stations in a
given region where mobile terminals are distributed according to a certain
probability density function and the base stations communicate through
microwave backhaul links. Using results of optimal transport theory, we provide
the optimal asymptotic distribution of base stations in the considered setting
by minimizing the total power over the whole network.Comment: Proceedings of the International Symposium on Ubiquitous Networking
(UNet'17), May 2017, Casablanca, Morocc
University Scholar Series: Ted Butryn and Matthew Masucci
Examining Female Triathletes\u27 Awareness of Doping and the Anti-doping Movement
On February 26, 2014, Dr. Ted Butryn and Dr. Matthew Masucci spoke in the University Scholar Series hosted by Interim Provost Andy Feinstein at the Dr. Martin Luther King, Jr. Library. SJSU professors Ted Butryn and Matthew Masucci co-investigated on a two-year World Anti-Doping Agency grant, which examined female triathletes and their awareness of doping and the anti-doping movement. Dr. Butryn is a 2012 Salzburg Fellow and Professor of Sport Sociology and Sport Psychology in the Department of Kinesiology. Dr. Masucci is an Associate Professor of Interdisciplinary Sport Studies in Kinesiology. Both Butryn and Masucci co-direct the Department of Kinesiology\u27s Qualitative Research Lab.https://scholarworks.sjsu.edu/uss/1031/thumbnail.jp
Robustness and Closeness Centrality for Self-Organized and Planned Cities
Street networks are important infrastructural transportation systems that
cover a great part of the planet. It is now widely accepted that transportation
properties of street networks are better understood in the interplay between
the street network itself and the so called \textit{information} or
\textit{dual network}, which embeds the topology of the street network
navigation system. In this work, we present a novel robustness analysis, based
on the interaction between the primal and the dual transportation layer for two
large metropolis, London and Chicago, thus considering the structural
differences to intentional attacks for \textit{self-organized} and planned
cities. We elaborate the results through an accurate closeness centrality
analysis in the Euclidean space and in the relationship between primal and dual
space. Interestingly enough, we find that even if the considered planar graphs
display very distinct properties, the information space induce them to converge
toward systems which are similar in terms of transportation properties
Information Spreading on Almost Torus Networks
Epidemic modeling has been extensively used in the last years in the field of
telecommunications and computer networks. We consider the popular
Susceptible-Infected-Susceptible spreading model as the metric for information
spreading. In this work, we analyze information spreading on a particular class
of networks denoted almost torus networks and over the lattice which can be
considered as the limit when the torus length goes to infinity. Almost torus
networks consist on the torus network topology where some nodes or edges have
been removed. We find explicit expressions for the characteristic polynomial of
these graphs and tight lower bounds for its computation. These expressions
allow us to estimate their spectral radius and thus how the information spreads
on these networks
Defensive Resource Allocation in Social Networks
In this work, we are interested on the analysis of competing marketing
campaigns between an incumbent who dominates the market and a challenger who
wants to enter the market. We are interested in (a) the simultaneous decision
of how many resources to allocate to their potential customers to advertise
their products for both marketing campaigns, and (b) the optimal allocation on
the situation in which the incumbent knows the entrance of the challenger and
thus can predict its response. Applying results from game theory, we
characterize these optimal strategic resource allocations for the voter model
of social networks.Comment: arXiv admin note: text overlap with arXiv:1402.538
Diophantine networks
We introduce a new class of deterministic networks by associating networks with Diophantine
equations, thus relating network topology to algebraic properties. The network is formed by rep-
resenting integers as vertices and by drawing cliques between M vertices every time that M dis-
tinct integers satisfy the equation. We analyse the network generated by the Pythagorean equation
x2+y2 = z2 showing that its degree distribution is well approximated by a power law with exponen-
tial cut-o®. We also show that the properties of this network di®er considerably from the features of
scale-free networks generated through preferential attachment. Remarkably we also recover a power
law for the clustering coe±cient.
We then study the network associated with the equation x2 + y2 = z showing that the degree
distribution is consistent with a power-law for several decades of values of k and that, after having
reached a minimum, the distribution begins rising again. The power law exponent, in this case,
is given by ° » 4:5 We then analyse clustering and ageing and compare our results to the ones
obtained in the Pythagorean case
Increasing Low-income Mothers’ Educational Attainment: Implications for Anti-poverty Programs and Policy
Context: Emerging research indicates parental educational attainment is not always stable over time, particularly among young adults with lower levels of income and educational attainment. Though increases in postsecondary education are often highlighted as a route to greater earnings among higher-income students, it is unclear whether increases in parental educational attainment can improve the socioeconomic circumstances of low-income families.
Objective: The first goal of the current study was to determine whether low-income mothers increased their educational attainment over a 6-year period as their children transitioned from early childhood through elementary school. Second, the current study examined a range of individual characteristics that may help or hinder a mother’s re-entrance into education. Last, associations between increased maternal education and indicators of family socioeconomic resources were examined to determine ways that increased education among low-income mothers of young children may serve as a mechanism to reduce poverty or other poverty-related risks.
Design and Sample: Data for this study come from the Chicago School Readiness Project (CSRP), a cluster randomized control trial of Head Start centers and a longitudinal follow-up of children and their families. The current study included 432 participants. Of those participants, 97% were the child’s mother or female caregiver, 70% lived below the Federal Poverty Line at baseline, and 93% identified as a racial/ethnic minority (i.e., African American, black, or Hispanic).
Main Outcome Measures: Maternal educational attainment was collected at 4 time-points across a 6-year period. From these data, a binary variable was created to indicate whether (1) or not (0) mothers increased their educational attainment. Maternal report of household income, unemployment status, and poverty-related risk were examined as indicators of family socioeconomic resources.
Results: Thirty-nine percent of mothers increased their educational attainment over the 6-year period of study, and the majority of those mothers attained additional degrees rather than years of schooling alone. Mothers whose children attended treatment-assigned preschool classrooms at baseline were subsequently more likely to increase their educational attainment over time than were mothers of children who initially attended control-assigned classrooms in preschool. Analyses of the roles of parental characteristics in predicting gains in maternal education suggest that mothers who reported greater depressive symptomatology were less likely to increase their educational attainment. Increases in educational attainment, in turn, were positively associated with income earned in subsequent years of our longitudinal follow-up study and negatively associated with maternal unemployment and poverty-related risk when children were in 5th grade.
Conclusions: Increases in parent educational attainment were impressive for our sample of low-income mothers, given their exposure to a range of poverty-related risks. Furthermore, our analyses support prior research suggesting that increases in maternal educational attainment may serve as an important mechanism to reduce families’ experience of income poverty
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